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Short Wave Sportfishing January 13th 08 12:48 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sun, 13 Jan 2008 00:39:08 -0500, "Eisboch" wrote:


"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all of
value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.


I think aluminum welds are fine as long as they are reinforced or the sheets
are relatively thick. Thin sheet (seam) welding of aluminum is prone to
cracking when subjected to even a little flex as compared to other metals.
Maybe someone with knowledge of metallurgy can explain the crystalline
structure, etc. My opinion is based on experience in industry.

BTW, I think flex is much more important in airplane wings than you give it
credit for. Next time you fly, note the location of a wing tip as the
airplane begins it's take-off run and watch it as you become airborne.
While flying in turbulence, watch the tip of the wing again. There's quite
a bit of wobbling around going on out there. Welded aluminum panels
wouldn't last long, nor would the wings if they were designed to be stiff
rather than being allowed to flex.


Thnk B-52. :)

I read somewhere that the wing of the B-52 flex up to six feet from
wing root to tip.

Can't verify that.

Short Wave Sportfishing January 13th 08 12:51 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sat, 12 Jan 2008 22:15:05 -0800, -rick- wrote:

Short Wave Sportfishing wrote:

Riveted aluminum boats tend to be sounder than welded boats and as a
general rule, easier to repair. The better aluminum boats, like Lund,
Starcraft, Princecraft, are riveted boats.


Um... Are you at all familiar with the type of heavy duty
welded aluminum boats the poster inquired about?


Yep - this is the one he referenced.

200 Sea Runner Hewes Craft

Has nothing to do with the rivet/weld debate.

I like the Weldcraft boats. I think CaliBill has one, but don't quote
me on that.

I'm not that familiar with the others.

Eisboch January 13th 08 01:06 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Short Wave Sportfishing" wrote in message
...
On Sun, 13 Jan 2008 00:39:08 -0500, "Eisboch" wrote:


"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all of
value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.


I think aluminum welds are fine as long as they are reinforced or the
sheets
are relatively thick. Thin sheet (seam) welding of aluminum is prone to
cracking when subjected to even a little flex as compared to other metals.
Maybe someone with knowledge of metallurgy can explain the crystalline
structure, etc. My opinion is based on experience in industry.

BTW, I think flex is much more important in airplane wings than you give
it
credit for. Next time you fly, note the location of a wing tip as the
airplane begins it's take-off run and watch it as you become airborne.
While flying in turbulence, watch the tip of the wing again. There's
quite
a bit of wobbling around going on out there. Welded aluminum panels
wouldn't last long, nor would the wings if they were designed to be stiff
rather than being allowed to flex.


Thnk B-52. :)

I read somewhere that the wing of the B-52 flex up to six feet from
wing root to tip.

Can't verify that.


I would say six feet at least. Even the wings on commercial airplane like
the 767s and 747s flex close to that at takeoff and in heavy turbulence.

Eisboch



Eisboch January 13th 08 01:12 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 


"Short Wave Sportfishing" wrote in message
...

I read somewhere that the wing of the B-52 flex up to six feet from
wing root to tip.



http://www.youtube.com/watch?v=95FT_DQy53E

Eisboch



John H.[_3_] January 13th 08 01:37 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sat, 12 Jan 2008 23:27:24 GMT, "JoeSpareBedroom"
wrote:

"Calif Bill" wrote in message
...

"JoeSpareBedroom" wrote in message
...
wrote in message
...
On Jan 11, 9:02 pm, "JoeSpareBedroom" wrote:
wrote in message

...
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:



wrote in message

...

Finally going to make the plunge and buy an aluminum boat, but i am
confused. Our goal is to buy a boat that will last for many years to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far as
the quality of the welds, some look like art and some look like my
son
who is 12 tried to weld for the first time. Does the apperance of
the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right
now,
any comments would help at this point

Thanks

I own a Lund, and the company makes a big selling point of the fact
that
their aluminum hulls are double riveted. Welding is not mentioned
anywhere
in their literature, as far as I've noticed. I've been beating the
crap
out
of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com

Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?

================

I have no idea what to look for with welds. Tell your wife that her dad
bought a ****ty boat, and she should not judge all riveted boats based
on
her father's bad judgement and low budget. If she's such a shmexpert,
maybe
she should be designing boats.- Hide quoted text -

- Show quoted text -

I would appreciate it if you didn't talk about her that way. You
don't know her.

==================


I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Maybe her dad bought a Lund and the rivets leaked. You know nothing about
her or the boat her dad bought. Except that the boat had leaking rivets.



You are correct. The leaky boat could've been a Lund. But, that doesn't
change the absolute perfection of my analogy. His wife thinks all things
within a given category are identical. Hopefully, that doesn't extend to
men.


I sure wouldn't want to put a splotch on that perfect image of yourself,
but you might just consider a little apology.
--
John H

John H.[_3_] January 13th 08 01:38 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sat, 12 Jan 2008 19:43:11 -0500, HK wrote:

wrote:
On Jan 12, 7:26 pm, HK wrote:
wrote:

He's just a stupid drunk. Anyone who has dealt with an alcoholic knows
that. Just hoping the OP knows that he can actually get good info here
if he just ignores him...
You're the one who seems to PUI. You know, post under the influence.

--
George W. Bush - the 43rd Best President Ever!


Heh, I was going to mention that the other troll would be along
soon;)

Note to the origional poster if you are still he We are a pretty
good group, really there are only two in the whole group who jump in
with no info, trying to troll conversations into the ground and steer
folks the wrong way intentionally... Both have posted to this thread,
I will leave it to you to figure out who they are;)



I have the turds known as Reggie and Dan blocked.


....in the Bozo's Bin!
--
John H

John H.[_3_] January 13th 08 01:46 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sun, 13 Jan 2008 08:12:35 -0500, "Eisboch" wrote:



"Short Wave Sportfishing" wrote in message
...

I read somewhere that the wing of the B-52 flex up to six feet from
wing root to tip.



http://www.youtube.com/watch?v=95FT_DQy53E

Eisboch


The 'Old Dog' wasn't there. You should see the flex on *those* wings!
--
John H

John H.[_3_] January 13th 08 01:51 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sun, 13 Jan 2008 01:47:16 GMT, Short Wave Sportfishing
wrote:

On Sat, 12 Jan 2008 20:30:21 -0500, Dan
wrote:

Don White wrote:
"JoeSpareBedroom" wrote in message
...
wrote in message
...
Finally going to make the plunge and buy an aluminum boat, but i am
confused. Our goal is to buy a boat that will last for many years to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far as
the quality of the welds, some look like art and some look like my son
who is 12 tried to weld for the first time. Does the apperance of the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right now,
any comments would help at this point

Thanks

I own a Lund, and the company makes a big selling point of the fact that
their aluminum hulls are double riveted. Welding is not mentioned anywhere
in their literature, as far as I've noticed. I've been beating the crap
out of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com


Same with Princecraft. hulls rivited...same as high stress airplane
bodies.
scroll down to... 'proven fastening methods'
http://www.princecraft.com/Content/e...ing_boats.aspx


Airplanes aren't designed for the water, bozo.

Nice job emulating Harry...If you own it, it's the BEST!


I owned it before Don did.

Want to call me a Bozo?


You neither own the Bozo's Bin nor are qualified to enter.

So quit trying.
--
John H

Jim January 13th 08 02:25 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

Quoting Kanter AKA bedroom Joe
I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Speaking of food Doug; how's that strict chicken and rice diet workin for
ya?



[email protected] January 13th 08 03:08 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Jan 13, 9:57*am, wrote:
On Sun, 13 Jan 2008 09:25:14 -0500, "Jim" wrote:

Quoting Kanter AKA bedroom Joe
I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Speaking of food Doug; how's that strict chicken and rice diet workin for
ya?


He says it tastes just like Crow.


Sheryl?? Ewwewwwww.....

John H.[_3_] January 13th 08 03:25 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sun, 13 Jan 2008 14:57:30 GMT, wrote:

On Sun, 13 Jan 2008 09:25:14 -0500, "Jim" wrote:


Quoting Kanter AKA bedroom Joe
I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Speaking of food Doug; how's that strict chicken and rice diet workin for
ya?


He says it tastes just like Crow.


Speaking of crow....a pork shoulder put on a hot Weber for a half hour on
each side and then put in a crock pot for 8 or 9 hours is fantastic!
--
John H

JoeSpareBedroom January 13th 08 03:26 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
"John H." wrote in message
...
On Sat, 12 Jan 2008 23:27:24 GMT, "JoeSpareBedroom"
wrote:

"Calif Bill" wrote in message
...

"JoeSpareBedroom" wrote in message
...
wrote in message
...
On Jan 11, 9:02 pm, "JoeSpareBedroom" wrote:
wrote in message

...
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:



wrote in message

...

Finally going to make the plunge and buy an aluminum boat, but i
am
confused. Our goal is to buy a boat that will last for many years
to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far
as
the quality of the welds, some look like art and some look like my
son
who is 12 tried to weld for the first time. Does the apperance of
the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right
now,
any comments would help at this point

Thanks

I own a Lund, and the company makes a big selling point of the fact
that
their aluminum hulls are double riveted. Welding is not mentioned
anywhere
in their literature, as far as I've noticed. I've been beating the
crap
out
of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com

Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?

================

I have no idea what to look for with welds. Tell your wife that her
dad
bought a ****ty boat, and she should not judge all riveted boats based
on
her father's bad judgement and low budget. If she's such a shmexpert,
maybe
she should be designing boats.- Hide quoted text -

- Show quoted text -

I would appreciate it if you didn't talk about her that way. You
don't know her.

==================


I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Maybe her dad bought a Lund and the rivets leaked. You know nothing
about
her or the boat her dad bought. Except that the boat had leaking
rivets.



You are correct. The leaky boat could've been a Lund. But, that doesn't
change the absolute perfection of my analogy. His wife thinks all things
within a given category are identical. Hopefully, that doesn't extend to
men.


I sure wouldn't want to put a splotch on that perfect image of yourself,
but you might just consider a little apology.
--
John H



I'm trying to urge him gently to YES his wife during the boat shopping
process, but ignore her advice. She's shown that she can't make sense of
features. Next, she'll be saying her grandpa got sick from eating a sandwich
that sat in the sun all day on his boat, so the new boat shouldn't have room
for sandwiches.



[email protected] January 13th 08 03:29 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Jan 13, 10:26*am, "JoeSpareBedroom" wrote:
"John H." wrote in message

...





On Sat, 12 Jan 2008 23:27:24 GMT, "JoeSpareBedroom"
wrote:


"Calif Bill" wrote in message
...


"JoeSpareBedroom" wrote in message
...
wrote in message
....
On Jan 11, 9:02 pm, "JoeSpareBedroom" wrote:
wrote in message


...
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:


wrote in message


...


Finally going to make the plunge and buy an aluminum boat, but i
am
confused. Our goal is to buy a boat that will last for many years
to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far
as
the quality of the welds, some look like art and some look like my
son
who is 12 tried to weld for the first time. Does the apperance of
the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right
now,
any comments would help at this point


Thanks


I own a Lund, and the company makes a big selling point of the fact
that
their aluminum hulls are double riveted. Welding is not mentioned
anywhere
in their literature, as far as I've noticed. I've been beating the
crap
out
of the boat since 1999 and it's as tight as the day it was new.


www.lundboats.com


Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?


================


I have no idea what to look for with welds. Tell your wife that her
dad
bought a ****ty boat, and she should not judge all riveted boats based
on
her father's bad judgement and low budget. If she's such a shmexpert,
maybe
she should be designing boats.- Hide quoted text -


- Show quoted text -


I would appreciate it if you didn't talk about her that way. *You
don't know her.


==================


I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Maybe her dad bought a Lund and the rivets leaked. *You know nothing
about
her or the boat her dad bought. *Except that the boat had leaking
rivets.


You are correct. The leaky boat could've been a Lund. But, that doesn't
change the absolute perfection of my analogy. His wife thinks all things
within a given category are identical. Hopefully, that doesn't extend to
men.


I sure wouldn't want to put a splotch on that perfect image of yourself,
but you might just consider a little apology.
--
John H


I'm trying to urge him gently to YES his wife during the boat shopping
process, but ignore her advice. She's shown that she can't make sense of
features. Next, she'll be saying her grandpa got sick from eating a sandwich
that sat in the sun all day on his boat, so the new boat shouldn't have room
for sandwiches.- Hide quoted text -

- Show quoted text -


Don't bother Joe. Your welcome has obvously soured him to the group,
he has probably moved on.. Too bad really, he may have actually been a
boater with something to add here.

John H.[_3_] January 13th 08 03:40 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sun, 13 Jan 2008 15:26:07 GMT, "JoeSpareBedroom"
wrote:

"John H." wrote in message
.. .
On Sat, 12 Jan 2008 23:27:24 GMT, "JoeSpareBedroom"
wrote:

"Calif Bill" wrote in message
...

"JoeSpareBedroom" wrote in message
...
wrote in message
...
On Jan 11, 9:02 pm, "JoeSpareBedroom" wrote:
wrote in message

...
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:



wrote in message

...

Finally going to make the plunge and buy an aluminum boat, but i
am
confused. Our goal is to buy a boat that will last for many years
to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far
as
the quality of the welds, some look like art and some look like my
son
who is 12 tried to weld for the first time. Does the apperance of
the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right
now,
any comments would help at this point

Thanks

I own a Lund, and the company makes a big selling point of the fact
that
their aluminum hulls are double riveted. Welding is not mentioned
anywhere
in their literature, as far as I've noticed. I've been beating the
crap
out
of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com

Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?

================

I have no idea what to look for with welds. Tell your wife that her
dad
bought a ****ty boat, and she should not judge all riveted boats based
on
her father's bad judgement and low budget. If she's such a shmexpert,
maybe
she should be designing boats.- Hide quoted text -

- Show quoted text -

I would appreciate it if you didn't talk about her that way. You
don't know her.

==================


I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Maybe her dad bought a Lund and the rivets leaked. You know nothing
about
her or the boat her dad bought. Except that the boat had leaking
rivets.


You are correct. The leaky boat could've been a Lund. But, that doesn't
change the absolute perfection of my analogy. His wife thinks all things
within a given category are identical. Hopefully, that doesn't extend to
men.


I sure wouldn't want to put a splotch on that perfect image of yourself,
but you might just consider a little apology.
--
John H



I'm trying to urge him gently to YES his wife during the boat shopping
process, but ignore her advice. She's shown that she can't make sense of
features. Next, she'll be saying her grandpa got sick from eating a sandwich
that sat in the sun all day on his boat, so the new boat shouldn't have room
for sandwiches.


You should hang a mirror from your monitor so you could admire yourself
more often.

Or is it already there?
--
John H

JoeSpareBedroom January 13th 08 03:45 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
"John H." wrote in message
...


I'm trying to urge him gently to YES his wife during the boat shopping
process, but ignore her advice. She's shown that she can't make sense of
features. Next, she'll be saying her grandpa got sick from eating a
sandwich
that sat in the sun all day on his boat, so the new boat shouldn't have
room
for sandwiches.


You should hang a mirror from your monitor so you could admire yourself
more often.

Or is it already there?
--
John H



You said that earlier. You're repeating yourself. Ask the mrs to give you
something to keep you occupied. Maybe a box of animal crackers.



Mike Harrison January 13th 08 05:23 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
I'm in the structural steel business and so I have a lot to learn about
aluminum, however, many years ago, during a slow period, we fabricated quite
a few aluminum freeway road signs. They were the great big ones with a truss
spanning the freeway and multiple pipe columns with zig zag pipes welded
everywhere. At that time, the big problem with aluminum was that the heat of
the welding process caused it to lose about 50% of the strength it had
acquired from being heat treated at the rolling mill. This strength could be
replaced by reinforcing all of the welds with extra material or by re-heat
treating the finished product. The heat treating temperatures are much lower
than are required for steel, but the process still requires a furnace large
enough to hold the finished product.

wrote in message
...
On Sun, 13 Jan 2008 09:25:14 -0500, "Jim" wrote:


Quoting Kanter AKA bedroom Joe
I don't know her, but based on the information you provided, I know
something ABOUT her. Here's an example of what I know about her: She
thinks a handmade pastry from a fancy bakery is identical to a frozen
Sara Lee pastry with the same name, like "tiramisu".


Speaking of food Doug; how's that strict chicken and rice diet workin for
ya?


He says it tastes just like Crow.





Del Cecchi[_2_] January 13th 08 05:46 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
wrote:
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:
wrote in message

...

Finally going to make the plunge and buy an aluminum boat, but i am
confused. Our goal is to buy a boat that will last for many years to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far as
the quality of the welds, some look like art and some look like my son
who is 12 tried to weld for the first time. Does the apperance of the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right now,
any comments would help at this point
Thanks

I own a Lund, and the company makes a big selling point of the fact that
their aluminum hulls are double riveted. Welding is not mentioned anywhere
in their literature, as far as I've noticed. I've been beating the crap out
of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com
Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?


Here in minnesota there are riveted boats all over the place. Lund and
Alumacraft are the two biggies. If they leaked, they wouldn't be so
popular. Boeing uses rivets also but not on boats.

JoeSpareBedroom[_2_] January 13th 08 05:52 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
"Del Cecchi" wrote in message
...
wrote:
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:
wrote in message

...

Finally going to make the plunge and buy an aluminum boat, but i am
confused. Our goal is to buy a boat that will last for many years to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far as
the quality of the welds, some look like art and some look like my son
who is 12 tried to weld for the first time. Does the apperance of the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right now,
any comments would help at this point
Thanks
I own a Lund, and the company makes a big selling point of the fact that
their aluminum hulls are double riveted. Welding is not mentioned
anywhere
in their literature, as far as I've noticed. I've been beating the crap
out
of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com
Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?


Here in minnesota there are riveted boats all over the place. Lund and
Alumacraft are the two biggies. If they leaked, they wouldn't be so
popular. Boeing uses rivets also but not on boats.



In the 1999 brochure, Lund had a picture of a WC series boat being dropped
from a seaplane into a remote lake.



Calif Bill January 13th 08 06:36 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Short Wave Sportfishing" wrote in message
...
On Sat, 12 Jan 2008 22:15:05 -0800, -rick- wrote:

Short Wave Sportfishing wrote:

Riveted aluminum boats tend to be sounder than welded boats and as a
general rule, easier to repair. The better aluminum boats, like Lund,
Starcraft, Princecraft, are riveted boats.


Um... Are you at all familiar with the type of heavy duty
welded aluminum boats the poster inquired about?


Yep - this is the one he referenced.

200 Sea Runner Hewes Craft

Has nothing to do with the rivet/weld debate.

I like the Weldcraft boats. I think CaliBill has one, but don't quote
me on that.

I'm not that familiar with the others.


I have a Jetcraft boat. When they were made in Medford, OR. The guy who
made mine is Bruce Wasson who now owns Roguejet. The picture on the webpage
of a head on shot of a boat going over a small falls is actually a Jetcraft
at Shanghai Bend on the Feather River just below Yuba City.



Calif Bill January 13th 08 06:39 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Short Wave Sportfishing" wrote in message
...
On Sun, 13 Jan 2008 00:39:08 -0500, "Eisboch" wrote:


"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all of
value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.


I think aluminum welds are fine as long as they are reinforced or the
sheets
are relatively thick. Thin sheet (seam) welding of aluminum is prone to
cracking when subjected to even a little flex as compared to other metals.
Maybe someone with knowledge of metallurgy can explain the crystalline
structure, etc. My opinion is based on experience in industry.

BTW, I think flex is much more important in airplane wings than you give
it
credit for. Next time you fly, note the location of a wing tip as the
airplane begins it's take-off run and watch it as you become airborne.
While flying in turbulence, watch the tip of the wing again. There's
quite
a bit of wobbling around going on out there. Welded aluminum panels
wouldn't last long, nor would the wings if they were designed to be stiff
rather than being allowed to flex.


Thnk B-52. :)

I read somewhere that the wing of the B-52 flex up to six feet from
wing root to tip.

Can't verify that.


The flex a lot more than that. Is why there are wheels at the outer part of
the wing. Seems like it was 15-16' normal flex.



Calif Bill January 13th 08 06:48 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Del Cecchi" wrote in message
...
wrote:
On Jan 11, 8:34 pm, "JoeSpareBedroom" wrote:
wrote in message

...

Finally going to make the plunge and buy an aluminum boat, but i am
confused. Our goal is to buy a boat that will last for many years to
come and also turn heads when on the water. The more i talk to
salesman the more BS i hear. What should i be looking for as far as
the quality of the welds, some look like art and some look like my son
who is 12 tried to weld for the first time. Does the apperance of the
weld matter? We are looking at a 200 Sea Runner Hewes Craft right now,
any comments would help at this point
Thanks
I own a Lund, and the company makes a big selling point of the fact that
their aluminum hulls are double riveted. Welding is not mentioned
anywhere
in their literature, as far as I've noticed. I've been beating the crap
out
of the boat since 1999 and it's as tight as the day it was new.

www.lundboats.com
Thanks for the feedback
I appreciate your coment about rivetted boats but my wife said noway
to riveted boats, he dad had one and it always leaked. Infact you
should have seen the dirty looks she gave one of the salesman when he
was trying to sale us on a riveted boat. What would you look for or
like to see as far as welds?


Here in minnesota there are riveted boats all over the place. Lund and
Alumacraft are the two biggies. If they leaked, they wouldn't be so
popular. Boeing uses rivets also but not on boats.



Riveted boats were lightweight, thin Aluminum. Welding thin aluminum just
does not work in boats or airplanes. Too much flex. Will break next to the
welds. Been their, got the tee shirt. My 14' alum boat got a crack in the
bottom from the trailer bunk. A keel roller had collapsed and the bow strap
caused the boat to press on the front edge of the bunk. Had it welded and
had to get it welded again. The Northwest boats were designed to run
shallow water with rocks. Sure the get holed at times. But it is normally
a very sharp rock that does it.



Canuck57 January 13th 08 09:10 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all of
value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.


I think aluminum welds are fine as long as they are reinforced or the
sheets are relatively thick. Thin sheet (seam) welding of aluminum is
prone to cracking when subjected to even a little flex as compared to
other metals. Maybe someone with knowledge of metallurgy can explain the
crystalline structure, etc. My opinion is based on experience in
industry.

BTW, I think flex is much more important in airplane wings than you give
it credit for. Next time you fly, note the location of a wing tip as the
airplane begins it's take-off run and watch it as you become airborne.
While flying in turbulence, watch the tip of the wing again. There's
quite a bit of wobbling around going on out there. Welded aluminum panels
wouldn't last long, nor would the wings if they were designed to be stiff
rather than being allowed to flex.

Eisboch


But my point being, do you want that much flex on a 17-19' boat?

I would think not. But on an aircraft, this is good. The wings are in
effect shock absorbers for up/down drafts and air density changes. But I
don't think this level of flex is needed nor desirable on a small boat.



Canuck57 January 13th 08 09:21 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"-rick-" wrote in message
. ..
Short Wave Sportfishing wrote:

Riveted aluminum boats tend to be sounder than welded boats and as a
general rule, easier to repair. The better aluminum boats, like Lund,
Starcraft, Princecraft, are riveted boats.


Um... Are you at all familiar with the type of heavy duty welded aluminum
boats the poster inquired about?

For example:

http://www.precisionweldboats.com/

http://www.weldcraftmarine.com/

http://www.duckworthboats.com/

http://www.roguejet.com/

http://www.customweld.com/

http://www.thunderjet.com/

http://www.motionmarine.com/

http://www.hewescraft.com/

http://www.fish-rite.com/boats.html

http://www.northriverboats.com/

etc.

As to the original question I'm no welding expert but I did examine a lot
of boats before buying one. I liked the neat consistency and smoothness
found in the North River and many others with a few notable exceptions
(this was 8 years ago). I've had some major rock hits since then and only
required one repair for a crack at the jet-pump intake seam. The .25"
bottom thickness helps.

I do see a lot Hewescraft on the Columbia river lately for what it's
worth.


0.25 on the bottom, don't have to worry about hull damage if you park in a
mess of logs. Going to take a look at Hewescraft.



Eisboch January 13th 08 09:50 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Canuck57" wrote in message
news:R6vij.61672$EA5.53484@pd7urf2no...

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all of
value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.


I think aluminum welds are fine as long as they are reinforced or the
sheets are relatively thick. Thin sheet (seam) welding of aluminum is
prone to cracking when subjected to even a little flex as compared to
other metals. Maybe someone with knowledge of metallurgy can explain the
crystalline structure, etc. My opinion is based on experience in
industry.

BTW, I think flex is much more important in airplane wings than you give
it credit for. Next time you fly, note the location of a wing tip as the
airplane begins it's take-off run and watch it as you become airborne.
While flying in turbulence, watch the tip of the wing again. There's
quite a bit of wobbling around going on out there. Welded aluminum
panels wouldn't last long, nor would the wings if they were designed to
be stiff rather than being allowed to flex.

Eisboch


But my point being, do you want that much flex on a 17-19' boat?

I would think not. But on an aircraft, this is good. The wings are in
effect shock absorbers for up/down drafts and air density changes. But I
don't think this level of flex is needed nor desirable on a small boat.


The wings of an aircraft are *not* designed to be shock absorbers. They may
be, by default of their ability to bend without breaking, but that's not the
design purpose. The design purpose is to allow them to bend and flex (which
they are going to do, welded or riveted) without breaking off. Rivets allow
the bending and flexing without exceeding the yield of the aluminum.
Welding would make them so stiff that they would snap near the welds.

But, that's not the issue. It's the fact that even a small, thin skinned
aluminum boat *will* want to flex. If it can't (because the seams are
welded) it's likely that one or more of the relatively weak welds will break
whereas a riveted construction allows the bending or flex without damage.

Even large, welded steel ships have expansion joints built into the hull
structure to allow for flexing, otherwise it would crack in half in rough
seas.

Eisboch



Calif Bill January 13th 08 09:56 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Canuck57" wrote in message
news:yhvij.61683$EA5.61072@pd7urf2no...

"-rick-" wrote in message
. ..
Short Wave Sportfishing wrote:

Riveted aluminum boats tend to be sounder than welded boats and as a
general rule, easier to repair. The better aluminum boats, like Lund,
Starcraft, Princecraft, are riveted boats.


Um... Are you at all familiar with the type of heavy duty welded aluminum
boats the poster inquired about?

For example:

http://www.precisionweldboats.com/

http://www.weldcraftmarine.com/

http://www.duckworthboats.com/

http://www.roguejet.com/

http://www.customweld.com/

http://www.thunderjet.com/

http://www.motionmarine.com/

http://www.hewescraft.com/

http://www.fish-rite.com/boats.html

http://www.northriverboats.com/

etc.

As to the original question I'm no welding expert but I did examine a lot
of boats before buying one. I liked the neat consistency and smoothness
found in the North River and many others with a few notable exceptions
(this was 8 years ago). I've had some major rock hits since then and only
required one repair for a crack at the jet-pump intake seam. The .25"
bottom thickness helps.

I do see a lot Hewescraft on the Columbia river lately for what it's
worth.


0.25 on the bottom, don't have to worry about hull damage if you park in a
mess of logs. Going to take a look at Hewescraft.


Actually the 3/16 does logs fine.



Canuck57 January 13th 08 10:14 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Calif Bill" wrote in message
...

"Canuck57" wrote in message
news:yhvij.61683$EA5.61072@pd7urf2no...

"-rick-" wrote in message
. ..
Short Wave Sportfishing wrote:

Riveted aluminum boats tend to be sounder than welded boats and as a
general rule, easier to repair. The better aluminum boats, like Lund,
Starcraft, Princecraft, are riveted boats.

Um... Are you at all familiar with the type of heavy duty welded
aluminum boats the poster inquired about?

For example:

http://www.precisionweldboats.com/

http://www.weldcraftmarine.com/

http://www.duckworthboats.com/

http://www.roguejet.com/

http://www.customweld.com/

http://www.thunderjet.com/

http://www.motionmarine.com/

http://www.hewescraft.com/

http://www.fish-rite.com/boats.html

http://www.northriverboats.com/

etc.

As to the original question I'm no welding expert but I did examine a
lot of boats before buying one. I liked the neat consistency and
smoothness found in the North River and many others with a few notable
exceptions (this was 8 years ago). I've had some major rock hits since
then and only required one repair for a crack at the jet-pump intake
seam. The .25" bottom thickness helps.

I do see a lot Hewescraft on the Columbia river lately for what it's
worth.


0.25 on the bottom, don't have to worry about hull damage if you park in
a mess of logs. Going to take a look at Hewescraft.


Actually the 3/16 does logs fine.


Sure better than 0.090 or 0.100.

Went fishing once in a tin can on a lake in the middle of Wisconsin,
Tomahawk I think. Found a large bay, and said this water does not look
right and slowed down. I was right, found out later why too. In the winter
if it freezes they dump stumps and logs into it for bass and it would be
like a mine field if you hit that with much more than adrift speed.

Needless to say, I took the tin in and had a gas. Lost count on how many
small mouth bass I nailed that day. But you could hear the aluminium flex
when you tapped one.

A bad day fishing is better than a good day at work.



Short Wave Sportfishing January 13th 08 10:27 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Sun, 13 Jan 2008 16:50:29 -0500, "Eisboch" wrote:

Even large, welded steel ships have expansion joints built into the hull
structure to allow for flexing, otherwise it would crack in half in rough
seas.


I saw a documentary on the Britannic, sister ship to Titanic, about
this very thing.

One of the more interesting aspects of the Titanic sinking were the
expansion joints. According to the documentary, the type of joint
used on the Titanic contributed to the diaster - I can't remember all
the technical details at the moment, but it was a type of joint that
was a "floating" joint. After the diaster, the Britannic was modified
to eliminate the the "floating" joint in favor of a boxed type joint.

Oddly, that type of joint contributed to Britannic's sinking when it
struck a mine off Greece in WWI.

It was pretty interesting.

Canuck57 January 13th 08 10:40 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:R6vij.61672$EA5.53484@pd7urf2no...

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all
of value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.

I think aluminum welds are fine as long as they are reinforced or the
sheets are relatively thick. Thin sheet (seam) welding of aluminum is
prone to cracking when subjected to even a little flex as compared to
other metals. Maybe someone with knowledge of metallurgy can explain the
crystalline structure, etc. My opinion is based on experience in
industry.

BTW, I think flex is much more important in airplane wings than you give
it credit for. Next time you fly, note the location of a wing tip as
the airplane begins it's take-off run and watch it as you become
airborne. While flying in turbulence, watch the tip of the wing again.
There's quite a bit of wobbling around going on out there. Welded
aluminum panels wouldn't last long, nor would the wings if they were
designed to be stiff rather than being allowed to flex.

Eisboch


But my point being, do you want that much flex on a 17-19' boat?

I would think not. But on an aircraft, this is good. The wings are in
effect shock absorbers for up/down drafts and air density changes. But I
don't think this level of flex is needed nor desirable on a small boat.


The wings of an aircraft are *not* designed to be shock absorbers. They
may be, by default of their ability to bend without breaking, but that's
not the design purpose. The design purpose is to allow them to bend and
flex (which they are going to do, welded or riveted) without breaking off.
Rivets allow the bending and flexing without exceeding the yield of the
aluminum. Welding would make them so stiff that they would snap near the
welds.

But, that's not the issue. It's the fact that even a small, thin skinned
aluminum boat *will* want to flex. If it can't (because the seams are
welded) it's likely that one or more of the relatively weak welds will
break whereas a riveted construction allows the bending or flex without
damage.

Even large, welded steel ships have expansion joints built into the hull
structure to allow for flexing, otherwise it would crack in half in rough
seas.

Eisboch


While I don't profess to be an aircraft engineer, I done believe the sales
hype about boats are better because we build then like aircraft. The needs
of the two are different. Even the rivets are different.

You mean like Edmund Fitzgerald? Me, I don't plan on being in anything
remotely as hazardous as Lake Superior and have no intention of amidships
being over a 35' wave. Michigan, no problem. Koocanusa, Lake of the Woods,
Rainy River, nice. But I just have a thing about Superior...used to live by
that lake and I would sooner hit the Pacific.

But how much does a 17-20' boat need to flex? If we look at fibreglass in
this size, not much hull flex at all.






JoeSpareBedroom January 13th 08 10:42 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
"Canuck57" wrote in message
news:wrwij.1919$wx.1785@pd7urf1no...

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:R6vij.61672$EA5.53484@pd7urf2no...

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all
of value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.

I think aluminum welds are fine as long as they are reinforced or the
sheets are relatively thick. Thin sheet (seam) welding of aluminum is
prone to cracking when subjected to even a little flex as compared to
other metals. Maybe someone with knowledge of metallurgy can explain
the crystalline structure, etc. My opinion is based on experience in
industry.

BTW, I think flex is much more important in airplane wings than you
give it credit for. Next time you fly, note the location of a wing tip
as the airplane begins it's take-off run and watch it as you become
airborne. While flying in turbulence, watch the tip of the wing again.
There's quite a bit of wobbling around going on out there. Welded
aluminum panels wouldn't last long, nor would the wings if they were
designed to be stiff rather than being allowed to flex.

Eisboch

But my point being, do you want that much flex on a 17-19' boat?

I would think not. But on an aircraft, this is good. The wings are in
effect shock absorbers for up/down drafts and air density changes. But
I don't think this level of flex is needed nor desirable on a small
boat.


The wings of an aircraft are *not* designed to be shock absorbers. They
may be, by default of their ability to bend without breaking, but that's
not the design purpose. The design purpose is to allow them to bend and
flex (which they are going to do, welded or riveted) without breaking
off. Rivets allow the bending and flexing without exceeding the yield of
the aluminum. Welding would make them so stiff that they would snap near
the welds.

But, that's not the issue. It's the fact that even a small, thin skinned
aluminum boat *will* want to flex. If it can't (because the seams are
welded) it's likely that one or more of the relatively weak welds will
break whereas a riveted construction allows the bending or flex without
damage.

Even large, welded steel ships have expansion joints built into the hull
structure to allow for flexing, otherwise it would crack in half in rough
seas.

Eisboch


While I don't profess to be an aircraft engineer, I done believe the sales
hype about boats are better because we build then like aircraft. The
needs of the two are different. Even the rivets are different.

You mean like Edmund Fitzgerald? Me, I don't plan on being in anything
remotely as hazardous as Lake Superior and have no intention of amidships
being over a 35' wave. Michigan, no problem. Koocanusa, Lake of the
Woods, Rainy River, nice. But I just have a thing about Superior...used
to live by that lake and I would sooner hit the Pacific.

But how much does a 17-20' boat need to flex? If we look at fibreglass in
this size, not much hull flex at all.



For some boats, the rigors of trailering on awful roads might be worse than
the pounding they get in the water.



HK January 13th 08 10:51 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
Canuck57 wrote:
"Eisboch" wrote in message
...
"Canuck57" wrote in message
news:R6vij.61672$EA5.53484@pd7urf2no...
"Eisboch" wrote in message
...
"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...
wrote in message
...

First, rivets are used on aircraft for the following reasons, not all
of value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.
I think aluminum welds are fine as long as they are reinforced or the
sheets are relatively thick. Thin sheet (seam) welding of aluminum is
prone to cracking when subjected to even a little flex as compared to
other metals. Maybe someone with knowledge of metallurgy can explain the
crystalline structure, etc. My opinion is based on experience in
industry.

BTW, I think flex is much more important in airplane wings than you give
it credit for. Next time you fly, note the location of a wing tip as
the airplane begins it's take-off run and watch it as you become
airborne. While flying in turbulence, watch the tip of the wing again.
There's quite a bit of wobbling around going on out there. Welded
aluminum panels wouldn't last long, nor would the wings if they were
designed to be stiff rather than being allowed to flex.

Eisboch
But my point being, do you want that much flex on a 17-19' boat?

I would think not. But on an aircraft, this is good. The wings are in
effect shock absorbers for up/down drafts and air density changes. But I
don't think this level of flex is needed nor desirable on a small boat.

The wings of an aircraft are *not* designed to be shock absorbers. They
may be, by default of their ability to bend without breaking, but that's
not the design purpose. The design purpose is to allow them to bend and
flex (which they are going to do, welded or riveted) without breaking off.
Rivets allow the bending and flexing without exceeding the yield of the
aluminum. Welding would make them so stiff that they would snap near the
welds.

But, that's not the issue. It's the fact that even a small, thin skinned
aluminum boat *will* want to flex. If it can't (because the seams are
welded) it's likely that one or more of the relatively weak welds will
break whereas a riveted construction allows the bending or flex without
damage.

Even large, welded steel ships have expansion joints built into the hull
structure to allow for flexing, otherwise it would crack in half in rough
seas.

Eisboch


While I don't profess to be an aircraft engineer, I done believe the sales
hype about boats are better because we build then like aircraft. The needs
of the two are different. Even the rivets are different.

You mean like Edmund Fitzgerald? Me, I don't plan on being in anything
remotely as hazardous as Lake Superior and have no intention of amidships
being over a 35' wave. Michigan, no problem. Koocanusa, Lake of the Woods,
Rainy River, nice. But I just have a thing about Superior...used to live by
that lake and I would sooner hit the Pacific.

But how much does a 17-20' boat need to flex? If we look at fibreglass in
this size, not much hull flex at all.



If you can push in the sides of a typical sal****er fiberglass boat of
that length with your palm, then you have found junk.

Del Cecchi January 13th 08 11:23 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Canuck57" wrote in message
news:P2wij.1805$wx.451@pd7urf1no...

Actually the 3/16 does logs fine.


Sure better than 0.090 or 0.100.

Went fishing once in a tin can on a lake in the middle of Wisconsin,
Tomahawk I think. Found a large bay, and said this water does not look
right and slowed down. I was right, found out later why too. In the
winter if it freezes they dump stumps and logs into it for bass and it
would be like a mine field if you hit that with much more than adrift
speed.

If it freezes? This the tomahawk lake near rhinelander? No "if"
involved. And I figure the logs are left over from the logging era, but
maybe they dump them in also.

Needless to say, I took the tin in and had a gas. Lost count on how
many small mouth bass I nailed that day. But you could hear the
aluminium flex when you tapped one.

A bad day fishing is better than a good day at work.




Canuck57 January 13th 08 11:53 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"JoeSpareBedroom" wrote in message
...
"Canuck57" wrote in message
news:wrwij.1919$wx.1785@pd7urf1no...

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:R6vij.61672$EA5.53484@pd7urf2no...

"Eisboch" wrote in message
...

"Canuck57" wrote in message
news:wHdij.60275$EA5.19428@pd7urf2no...

wrote in message
...

First, rivets are used on aircraft for the following reasons, not all
of value on a boat:

- low weight per attached foot of seam than welding
- cheap and manufacturing ease of use
- thermal expansion and flex
- can be drilled out for access/repair/inspection
- welding is more expensive per attached foot than rivets


Are other opinions welcome, yes.

I think aluminum welds are fine as long as they are reinforced or the
sheets are relatively thick. Thin sheet (seam) welding of aluminum is
prone to cracking when subjected to even a little flex as compared to
other metals. Maybe someone with knowledge of metallurgy can explain
the crystalline structure, etc. My opinion is based on experience in
industry.

BTW, I think flex is much more important in airplane wings than you
give it credit for. Next time you fly, note the location of a wing
tip as the airplane begins it's take-off run and watch it as you
become airborne. While flying in turbulence, watch the tip of the wing
again. There's quite a bit of wobbling around going on out there.
Welded aluminum panels wouldn't last long, nor would the wings if they
were designed to be stiff rather than being allowed to flex.

Eisboch

But my point being, do you want that much flex on a 17-19' boat?

I would think not. But on an aircraft, this is good. The wings are in
effect shock absorbers for up/down drafts and air density changes. But
I don't think this level of flex is needed nor desirable on a small
boat.


The wings of an aircraft are *not* designed to be shock absorbers. They
may be, by default of their ability to bend without breaking, but that's
not the design purpose. The design purpose is to allow them to bend and
flex (which they are going to do, welded or riveted) without breaking
off. Rivets allow the bending and flexing without exceeding the yield of
the aluminum. Welding would make them so stiff that they would snap near
the welds.

But, that's not the issue. It's the fact that even a small, thin
skinned aluminum boat *will* want to flex. If it can't (because the
seams are welded) it's likely that one or more of the relatively weak
welds will break whereas a riveted construction allows the bending or
flex without damage.

Even large, welded steel ships have expansion joints built into the hull
structure to allow for flexing, otherwise it would crack in half in
rough seas.

Eisboch


While I don't profess to be an aircraft engineer, I done believe the
sales hype about boats are better because we build then like aircraft.
The needs of the two are different. Even the rivets are different.

You mean like Edmund Fitzgerald? Me, I don't plan on being in anything
remotely as hazardous as Lake Superior and have no intention of amidships
being over a 35' wave. Michigan, no problem. Koocanusa, Lake of the
Woods, Rainy River, nice. But I just have a thing about Superior...used
to live by that lake and I would sooner hit the Pacific.

But how much does a 17-20' boat need to flex? If we look at fibreglass
in this size, not much hull flex at all.



For some boats, the rigors of trailering on awful roads might be worse
than the pounding they get in the water.


Good point. The amount of support on some trailers looks kind of pretty
small in the square foots department. At least in the water it is
distributed over a much larger area. And Canadian roads... 'nuf said.




Canuck57 January 14th 08 12:10 AM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Del Cecchi" wrote in message
...

"Canuck57" wrote in message
news:P2wij.1805$wx.451@pd7urf1no...

Actually the 3/16 does logs fine.


Sure better than 0.090 or 0.100.

Went fishing once in a tin can on a lake in the middle of Wisconsin,
Tomahawk I think. Found a large bay, and said this water does not look
right and slowed down. I was right, found out later why too. In the
winter if it freezes they dump stumps and logs into it for bass and it
would be like a mine field if you hit that with much more than adrift
speed.

If it freezes? This the tomahawk lake near rhinelander? No "if"
involved. And I figure the logs are left over from the logging era, but
maybe they dump them in also.


Yep, that would be the one. North mostly west side of the lake, under the
tracks leading into a river feed. Nice Muskie up there too, mine got away
but close enough to see the critter. Caught a 23" walleye of all things in
the river too. Once under the tracks, going upstream stick to the right as
in the center to the left shore, quite a few dead heads just inches under
water. But sneak your boat in there and the smallies be a in there.
Especially near the small island to the west and shore to the south.

While they were not like the 5 pounders I really like, usually 10-15", the
quantity was awesome when I was there.

Pike were good in a pool off the river not 1 mile up the river.

A local resort owner told me it was deliberate to foster a breading ground.
Lots of stumps, even in the open waters you would snag one once and awhile.
Being an artificial lake, not a bad place to fish. I hit that lake 3 times,
always in September.

There is another railway crossing to the east. Hit that area good. Mostly
small walleye.



Short Wave Sportfishing January 14th 08 12:26 AM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
On Mon, 14 Jan 2008 00:10:32 GMT, "Canuck57"
wrote:

A local resort owner told me it was deliberate to foster a breading ground.


Wouldn't that make soggy bread?

Del Cecchi January 14th 08 04:58 AM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 

"Canuck57" wrote in message
news:YLxij.61953$EA5.4653@pd7urf2no...

"Del Cecchi" wrote in message
...

"Canuck57" wrote in message
news:P2wij.1805$wx.451@pd7urf1no...

Actually the 3/16 does logs fine.

Sure better than 0.090 or 0.100.

Went fishing once in a tin can on a lake in the middle of Wisconsin,
Tomahawk I think. Found a large bay, and said this water does not
look right and slowed down. I was right, found out later why too.
In the winter if it freezes they dump stumps and logs into it for
bass and it would be like a mine field if you hit that with much more
than adrift speed.

If it freezes? This the tomahawk lake near rhinelander? No "if"
involved. And I figure the logs are left over from the logging era,
but maybe they dump them in also.


Yep, that would be the one. North mostly west side of the lake, under
the tracks leading into a river feed. Nice Muskie up there too, mine
got away but close enough to see the critter. Caught a 23" walleye of
all things in the river too. Once under the tracks, going upstream
stick to the right as in the center to the left shore, quite a few dead
heads just inches under water. But sneak your boat in there and the
smallies be a in there. Especially near the small island to the west
and shore to the south.

While they were not like the 5 pounders I really like, usually 10-15",
the quantity was awesome when I was there.

Pike were good in a pool off the river not 1 mile up the river.

A local resort owner told me it was deliberate to foster a breading
ground. Lots of stumps, even in the open waters you would snag one once
and awhile. Being an artificial lake, not a bad place to fish. I hit
that lake 3 times, always in September.


Well, it is possible they put them in but I am really skeptical. That
whole area was logged off around 1900 and the logs floated to the
sawmills. Some percent of them sank and are still there. see

http://content.wisconsinhistory.org/...OPTR=119&REC=9

or

http://content.wisconsinhistory.org/...ORT=descri%7Cf

There is another railway crossing to the east. Hit that area good.
Mostly small walleye.


good fishing in that country for sure.



James[_2_] January 14th 08 04:22 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
Jim wrote:


"HK" wrote in message
...
wrote:
Finally going to make the plunge and buy an aluminum boat, but i
am confused. Our goal is to buy a boat that will last for many
years to come and also turn heads when on the water. The more i
talk to salesman the more BS i hear. What should i be looking
for as far as the quality of the welds, some look like art and
some look like my son who is 12 tried to weld for the first time.
Does the apperance of the weld matter? We are looking at a 200
Sea Runner Hewes Craft right now, any comments would help at this
point

Thanks


www.blacklabmarine.com

plate welded aluminum boats

high quality, great welds, definitely turn heads

I guess so. Those things are butt ugly. You can't help but notice.


C_Kidman69, Where are you located? There's a bunch of aluminium boat
dealers here in Boise including a couple of builders. Customweld being
one. My next door neighbour owns an aluminium boat that he purchased
here but was built in Portland,Or I believe.I'll post more after I talk
to him. I don't push any brand because we own a couple of sailboats. Jim

--


James[_2_] January 14th 08 05:08 PM

Aluminum boats welding (Hewes, Duckworth, Bolton)
 
James wrote:

Jim wrote:


"HK" wrote in message
...
wrote:
Finally going to make the plunge and buy an aluminum boat, but i
am confused. Our goal is to buy a boat that will last for many
years to come and also turn heads when on the water. The more i
talk to salesman the more BS i hear. What should i be looking
for as far as the quality of the welds, some look like art and
some look like my son who is 12 tried to weld for the first
time. Does the apperance of the weld matter? We are looking at
a 200 Sea Runner Hewes Craft right now, any comments would help
at this point

Thanks

www.blacklabmarine.com

plate welded aluminum boats

high quality, great welds, definitely turn heads

I guess so. Those things are butt ugly. You can't help but notice.


C_Kidman69, Where are you located? There's a bunch of aluminium boat
dealers here in Boise including a couple of builders. Customweld being
one. My next door neighbour owns an aluminium boat that he purchased
here but was built in Portland,Or I believe.I'll post more after I
talk to him. I don't push any brand because we own a couple of
sailboats. Jim


My neighbour has a Thunderjet and his buddy has a Customweld. Jim

--



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