rigid vangs

#331

Hey Armando,

I sail by myself mostly and getting to the mast to fetch up the topping
lift can be a hairy affair, as you know, in any kind of weather.  I'd
rather not attach a bunch of blocks on my boom to be able to do it from
the cockpit. I don't like the potential for the boom to crash down into
the cockpit either.  The topping lift swings around up there aloft and
this arrangement just eliminates that.  It's clean, sturdy and very
handy.  Apparently it really helps in light air sailing as well.  I
guess allowing you to create a nicer shape in the sail.  I've only
sailed on a newer Beneteau with one, never a T-27.

Greg Van Pelt

#332

Apparently it really helps in light air sailing as well. I? guess allowing you to create a nicer shape in the sail. I've only sailed on a newer Beneteau with one, never a T-27.

Chris -

In light air the rigid vang supports the boom, and keeps it from dragging down the leech of the sail.

#333

Chris -

In light air the rigid vang supports the boom, and keeps it from
dragging down the leech of the sail.
Hey Greg...

Totally makes sense. Can't wait to give it a shot.  Thanks for the info.

#334

Yes I see the benefit for light air.  The boom not
pulling down on the sail.  

I usually keep the topping lift attached making sure
that is loose enough to let me flatten the sail if
needed.

thanks for the info

armando
--- chrisd4700 <chrisd4700@...> wrote:

Hey Armando,

I sail by myself mostly and getting to the mast to
fetch up the topping 
lift can be a hairy affair, as you know, in any kind
of weather.  I'd 
rather not attach a bunch of blocks on my boom to be
able to do it from
the cockpit. I don't like the potential for the boom
to crash down into 
the cockpit either.  The topping lift swings around
up there aloft and 
this arrangement just eliminates that.  It's clean,
sturdy and very 
handy.  Apparently it really helps in light air
sailing as well.  I 
guess allowing you to create a nicer shape in the
sail.  I've only 
sailed on a newer Beneteau with one, never a T-27. 



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Walter Glasspool

#335

Hi All T-27'r.

A few years ago I was thinking of going to a rigid vang on mt T-27-2 (1978). I approached Gar--. Their response was that there was not enough of a distance deck to boom on a T27-2.

I do not know if the earlier model had a greater distance or not.

Please keep in mind the vector forces of the boom and the vertical force needed to vang the sail? Look up the sin and cos values for the vang angle. An appreciable force can be exerted horizontally on the boom, and therefore on the goose neck with the boom vanged down TIGHT.

If the vang is installed at a 45 degree angle, 70% of the vang force is in the vertical direction, and 70% is in the horizontal direction.

forty degrees = 58% vert/81% hor.

thirty five degrees= 52% vert/85% hor.

thirty degrees= 45%vert/89% hor.

As an example, if a 30 degree angle is used, and the vang?force is 100#, the sail's leech would be tighted 45#, but the force at the goose neck would be a compressed force of 89#.

Walt

Patience T27-2 695

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rigid vangs