Frogwatch wrote:
It seems that deadrise has a radical effect on the ability of a boat
to get on plane quickly and thus use less fuel. More deadrise makes a
boat punch through waves better but increases draft and reduces fuel
economy in smaller seas. I assume that variable deadrise has been
tried. Of course there are boats that try to use hull shape to
accomodate varying conditions but not too successfully.
My Tolman has about 10 degree deadrise and is very light so is very
fuel efficient but pounds a lot in chop so I have to slow down to
about 12 kts. Why not some mechanism that would consist of another
outer variable hull layer that would be hinged at the chines allowing
the keel portion to move downward to increase deadrise. It would have
a flexible stiff plastic piece at the front to keep water out of the
area between the two hulls. Is this simply too complex for too little
benefit?

Hehehehe. You *are* quite the poster.

Yes, there are plenty of "variable deadrise" hulls around, but not
because of hinges.

If we are talking small monohull planing hulls, there are flat bottom
boats that pound at speed, boats with deadrise like yours that plane
nicely in a light chop, mod-vee hulls that do a bit better than yours in
more chop, and deep vee hulls. There also are hulls with rounded chines
that do a bit better than yours.

A hinged bottom? Hey...design and build one, and get back to us.




--
The morality police - the bloviating gas bags of the religious right -
have fallen lower than the stock market. It has truly been an amazing
(and amusing) thing to watch these so-called "spokesmen of Christ"
defending their morally indefensible positions these days. Finally -
they're going away. It seems an answer to a prayer. Thank you, Lord.

"HK" wrote in message
m...
Frogwatch wrote:
It seems that deadrise has a radical effect on the ability of a boat
to get on plane quickly and thus use less fuel. More deadrise makes a
boat punch through waves better but increases draft and reduces fuel
economy in smaller seas. I assume that variable deadrise has been
tried. Of course there are boats that try to use hull shape to
accomodate varying conditions but not too successfully.
My Tolman has about 10 degree deadrise and is very light so is very
fuel efficient but pounds a lot in chop so I have to slow down to
about 12 kts. Why not some mechanism that would consist of another
outer variable hull layer that would be hinged at the chines allowing
the keel portion to move downward to increase deadrise. It would have
a flexible stiff plastic piece at the front to keep water out of the
area between the two hulls. Is this simply too complex for too little
benefit?

Hehehehe. You *are* quite the poster.

Yes, there are plenty of "variable deadrise" hulls around, but not because
of hinges.

If we are talking small monohull planing hulls, there are flat bottom
boats that pound at speed, boats with deadrise like yours that plane
nicely in a light chop, mod-vee hulls that do a bit better than yours in
more chop, and deep vee hulls. There also are hulls with rounded chines
that do a bit better than yours.

A hinged bottom? Hey...design and build one, and get back to us.



Active Variable deadrise. Actually an interesting concept. I know fighter
places have variable wing surfaces, etc. Maybe an inflatable sponson for a
tunnel on the sides, etc. At least it is a boating content thread. But
since you are imagination restricted, would be hard for you to accept this
as an interesting concept.

On Thu, 19 Mar 2009 14:44:06 -0800, "Calif Bill"
wrote:



Active Variable deadrise. Actually an interesting concept. I know fighter
places have variable wing surfaces, etc. Maybe an inflatable sponson for a
tunnel on the sides, etc. At least it is a boating content thread. But
since you are imagination restricted, would be hard for you to accept this
as an interesting concept.

Here ya go.

http://www.freepatentsonline.com/6158376.html

--Vic

"Vic Smith" wrote in message
...
On Thu, 19 Mar 2009 14:44:06 -0800, "Calif Bill"
wrote:



Active Variable deadrise. Actually an interesting concept. I know
fighter
places have variable wing surfaces, etc. Maybe an inflatable sponson for
a
tunnel on the sides, etc. At least it is a boating content thread. But
since you are imagination restricted, would be hard for you to accept this
as an interesting concept.

Here ya go.

http://www.freepatentsonline.com/6158376.html

--Vic


Regal has a hull design that basically touts a "variable" deadrise, based on
lift.
This was an interesting read:

http://www.ll.georgetown.edu/federal...s/99-1511.html


Eisboch

On Thu, 19 Mar 2009 18:07:15 -0400, "Eisboch"
wrote:




Regal has a hull design that basically touts a "variable" deadrise, based on
lift.
This was an interesting read:

http://www.ll.georgetown.edu/federal...s/99-1511.html


It takes a lawyer to claim that a shape hull shape can violate a
patent.
Every time my head creates a "new invention" I look on the internet
and see a vastly improved version already patented.
Once in a while when I forget to look on the internet, I see one of my
"inventions" already on sale at the store.

--Vic

On Mar 19, 6:41 pm, Vic Smith wrote:
On Thu, 19 Mar 2009 18:07:15 -0400, "Eisboch"
wrote:



Regal has a hull design that basically touts a "variable" deadrise, based on
lift.
This was an interesting read:

http://www.ll.georgetown.edu/federal...ons/99opinions...

It takes a lawyer to claim that a shape hull shape can violate a
patent.
Every time my head creates a "new invention" I look on the internet
and see a vastly improved version already patented.
Once in a while when I forget to look on the internet, I see one of my
"inventions" already on sale at the store.

--Vic

I actually make my living by inventing things and as the saying goes,
"Theres thousands of good ideas and most of them are wrong" certainly
applies to what I do.
To enlighten some people, "Faster than light travel" is prohibited
mathematically because it results in violation of causality, ie.,
effects happen before the cause (yes, there may be exceptions). There
is nothing mathematically wrong with a variable hull.
I have spent hundreds of thousands of dollars on ideas that didn't
work but I don't admit the ideas are dead .........yet. Sometimes,
something actually does work and you lean back and
think..........."DAMN, that is cool", being surprised it works.
It is perfectly normal for people to say "That can't work otherwise it
would've been done". You simply do not listen to such and go find out
why it hasn't been done.

"Frogwatch" wrote in message
...

To enlighten some people, "Faster than light travel" is prohibited
mathematically because it results in violation of causality, ie.,
effects happen before the cause (yes, there may be exceptions).

If I can find it, I'll send you a paper written by some Russian scientists.
It was given to me by a German friend of mine who surprised me with it
following a long debate we had over some beers.

(he held two Phd's in Physics)

Basically, it describes an experiment whereby a laser beam was fired into a
tube that contained cesium in a gaseous form, then exited the tube and hit a
target sensor. They had some exotic metrology set up to measure and record
the tests.

The photons contained in the laser burst exceeded the speed of light,
according to the test results.

Eisboch

On Thu, 19 Mar 2009 17:23:48 -0700 (PDT), Frogwatch
wrote:

On Mar 19, 6:41 pm, Vic Smith wrote:
On Thu, 19 Mar 2009 18:07:15 -0400, "Eisboch"
wrote:



Regal has a hull design that basically touts a "variable" deadrise, based on
lift.
This was an interesting read:

http://www.ll.georgetown.edu/federal...ons/99opinions...

It takes a lawyer to claim that a shape hull shape can violate a
patent.
Every time my head creates a "new invention" I look on the internet
and see a vastly improved version already patented.
Once in a while when I forget to look on the internet, I see one of my
"inventions" already on sale at the store.

--Vic

I actually make my living by inventing things and as the saying goes,
"Theres thousands of good ideas and most of them are wrong" certainly
applies to what I do.
To enlighten some people, "Faster than light travel" is prohibited
mathematically because it results in violation of causality, ie.,
effects happen before the cause (yes, there may be exceptions). There
is nothing mathematically wrong with a variable hull.
I have spent hundreds of thousands of dollars on ideas that didn't
work but I don't admit the ideas are dead .........yet. Sometimes,
something actually does work and you lean back and
think..........."DAMN, that is cool", being surprised it works.
It is perfectly normal for people to say "That can't work otherwise it
would've been done". You simply do not listen to such and go find out
why it hasn't been done.

You know who you remind me of?
Thomas Edison. With boats.
Keep at it, and you'll get there.
Or have plenty of fun trying.
Ever been down to the museum in Fort Myers?
That could be yours.
Always keep saying I'll go there, but I end up fishing instead.

--Vic

Calif Bill wrote:
"HK" wrote in message
m...
Frogwatch wrote:
It seems that deadrise has a radical effect on the ability of a boat
to get on plane quickly and thus use less fuel. More deadrise makes a
boat punch through waves better but increases draft and reduces fuel
economy in smaller seas. I assume that variable deadrise has been
tried. Of course there are boats that try to use hull shape to
accomodate varying conditions but not too successfully.
My Tolman has about 10 degree deadrise and is very light so is very
fuel efficient but pounds a lot in chop so I have to slow down to
about 12 kts. Why not some mechanism that would consist of another
outer variable hull layer that would be hinged at the chines allowing
the keel portion to move downward to increase deadrise. It would have
a flexible stiff plastic piece at the front to keep water out of the
area between the two hulls. Is this simply too complex for too little
benefit?
Hehehehe. You *are* quite the poster.

Yes, there are plenty of "variable deadrise" hulls around, but not because
of hinges.

If we are talking small monohull planing hulls, there are flat bottom
boats that pound at speed, boats with deadrise like yours that plane
nicely in a light chop, mod-vee hulls that do a bit better than yours in
more chop, and deep vee hulls. There also are hulls with rounded chines
that do a bit better than yours.

A hinged bottom? Hey...design and build one, and get back to us.



Active Variable deadrise. Actually an interesting concept. I know fighter
places have variable wing surfaces, etc. Maybe an inflatable sponson for a
tunnel on the sides, etc. At least it is a boating content thread. But
since you are imagination restricted, would be hard for you to accept this
as an interesting concept.



I find travel faster than the speed of light an interesting concept, too.


--
The morality police - the bloviating gas bags of the religious right -
have fallen lower than the stock market. It has truly been an amazing
(and amusing) thing to watch these so-called "spokesmen of Christ"
defending their morally indefensible positions these days. Finally -
they're going away. It seems an answer to a prayer. Thank you, Lord.

Einstein did not say faster than light travel was impossible. Speed was
limited by energy contraints. Maybe there is another factor in the energy
equation that we do not realize is there in our universe. Just happens to
be 1 or unity on Earth.