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-   -   Rigid Boom Vangs (https://www.boatbanter.com/asa/21492-rigid-boom-vangs.html)

Capt. Mooron August 17th 04 09:35 PM


"DSK" wrote in message

The only thing Ol' Thom listed that a rigid vang can't do is become an
| emergency backstay. It will (or should) be able to support the boom for
| hoisting.

Not a chance Doug! The mechanics are all wrong and the placement is useless
for that purpose.

CM



Jonathan Ganz August 17th 04 09:55 PM

The only way I could even contemplate that would be to disconnect it
from the base of the mast, then put it somewhere back, but I can't
imagine it would do much good.

In article ,
Capt. Mooron wrote:

"DSK" wrote in message

The only thing Ol' Thom listed that a rigid vang can't do is become an
| emergency backstay. It will (or should) be able to support the boom for
| hoisting.

Not a chance Doug! The mechanics are all wrong and the placement is useless
for that purpose.

CM




--
Jonathan Ganz (j gan z @ $ail no w.c=o=m)
http://www.sailnow.com
"If there's no wind, row."


Thom Stewart August 18th 04 07:08 AM

DSK,

If you use the solid vange to hold up the boom when using it for a
crane, it will soon be like Neals Boom, with a pipe in it. The topping
lift bears the load. The boom only position the lifting location.

Ole Thom


DSK August 18th 04 11:56 AM

Capt. Mooron wrote:
Not a chance Doug! The mechanics are all wrong and the placement is useless
for that purpose.


???

It holds up the boom, right?

Jonathan Ganz wrote:
The only way I could even contemplate that would be to disconnect it
from the base of the mast, then put it somewhere back, but I can't
imagine it would do much good.


??? ???

Have either of you all ever actually seen a solid vang?

DSK


DSK August 18th 04 12:33 PM

Thom Stewart wrote:
If you use the solid vange to hold up the boom when using it for a
crane, it will soon be like Neals Boom, with a pipe in it. The topping
lift bears the load. The boom only position the lifting location.


Not if it was built properly in the first place.

I must be more spoiled than I realize, having sailed boats with strong
spars and decent rigging. Oh well.

If your boom will not lift a dinghy then it will not stand up to hard
sailing either. A topping lift might "bear the load" but it also puts
the boom under more compression than the weight of the load.

The usual failure point (in my experience) is the gooseneck.

Fresh Breezes- Doug King


Capt. Mooron August 18th 04 04:32 PM

Yup.... and no way it would hold the boom so I could hoist the auxiliary out
of the engine room with one!

For that you need a topping lift..

CM

"DSK" wrote in message
| Have either of you all ever actually seen a solid vang?
|
| DSK
|



DSK August 18th 04 04:41 PM

Capt. Mooron wrote:
Yup.... and no way it would hold the boom so I could hoist the auxiliary out
of the engine room with one!

For that you need a topping lift..


In that case, the solid vangs you've seen (and/or the booms) were sadly
lacking.

If it won't hold up a piddly little outboard motor, how is it going to
hold the force of the whole boat driving the boom tip into wave crests,
or any of the other things that can be expected to happen when you
*really* sail, occasionally in hard conditions?

I think you're forming your opinion based on incomplete data.

A *real* solid vang (and boom) will fulfill all the functions of a
topping lift, except as an emergency backstay replacement. I've seen a
lot that wouldn't, but I don't like them either.

It's sort of like a centerboard one-design that won't plane... what's
the point?

Fresh Breezes- Doug King


Jonathan Ganz August 18th 04 06:49 PM

In article ,
DSK wrote:
A *real* solid vang (and boom) will fulfill all the functions of a
topping lift, except as an emergency backstay replacement. I've seen a
lot that wouldn't, but I don't like them either.

It's sort of like a centerboard one-design that won't plane... what's
the point?


Doug, I thougth that's what you were saying it would do... as an
emergency backstay. Oh well... my reading comprehension is going
downhill fast.



--
Jonathan Ganz (j gan z @ $ail no w.c=o=m)
http://www.sailnow.com
"If there's no wind, row."


DSK August 18th 04 10:15 PM

Jonathan Ganz wrote:
Doug, I thougth that's what you were saying it would do... as an
emergency backstay. Oh well... my reading comprehension is going
downhill fast.


My bad. I have been in a hurry all week and am probably not writing very
clearly.

DSK


Capt. Mooron August 18th 04 10:23 PM


"DSK" wrote in message

| If it won't hold up a piddly little outboard motor, how is it going to
| hold the force of the whole boat driving the boom tip into wave crests,
| or any of the other things that can be expected to happen when you
| *really* sail, occasionally in hard conditions?

it's an auxiliary diesel.. 30 HP! The vang holds the boom down not up...
yes it has the capacity to hold up a boom up with some weight.... but that
is not it's primary function.

Leverage is required at the end of the boom for lifting. I'm certain you are
familiar with fulcrums?
Where would you fasten the mainsheet to the boom... generally it's 50% of
the length or more. Look where the vang is... at what 15%?

|
| I think you're forming your opinion based on incomplete data.

My data seems more complete than yours at the moment Doug.


|
| A *real* solid vang (and boom) will fulfill all the functions of a
| topping lift, except as an emergency backstay replacement. I've seen a
| lot that wouldn't, but I don't like them either.

No Way Doug!! No for all the tea in China. The engineering is out to lunch
for such a claim.

CM




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