Want to Add Boom Vang PY26 - SailNet Community
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post #1 of 16 Old 04-15-2012 Thread Starter
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Want to Add Boom Vang PY26

My boat currently doesn't have one, and I'm "thinking" I want one...

So I dug up some rigging to make a 3:1 vang with cam cleat...7/16" line...

I'm thinking it's strong enough as my sail is high aspect and boom is only 9'8" long...However I do have a double block I could add and mate the bolck with becket to the cleat block if you guys think I'll need 4:1....??



Also would like confirmation on what to use as mounting points on Mast and Boom...

I have two sizes of Pad Eye 1 3/4" and 2 3/4" and would bend "eyes" to match curve of boom/mast and drill tap 10/24 SS machine screws to attach...

Am I on the right track, or should I be looking for a quad eye bolt setup...?


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post #2 of 16 Old 04-15-2012
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Re: Want to Add Boom Vang PY26

Vang should be OK, not sure about the pad eyes though. Mine is shackled to the mast step and to a through-bolted bail on the boom.

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post #3 of 16 Old 04-15-2012
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Re: Want to Add Boom Vang PY26

On my previous boat, a PY23, the vang bail was riveted to the boom by a PO. Tore out quickly after I used it a short time (rivet corrosion). Bought a new bail and through-bolted it. I think that's the way to go. More pull on that vang than you might think.

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post #4 of 16 Old 04-15-2012 Thread Starter
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Re: Want to Add Boom Vang PY26

OK, been looking up boom bails...much more substantial than the pad eyes..

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post #5 of 16 Old 04-15-2012 Thread Starter
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Re: Want to Add Boom Vang PY26

OK padeyes are out, and I ordered a couple appropriate sized Bails to thru bolt...

I re-rigged the vang for 4:1 (will need more line, especially if I run to winch)



Now the question comes up "Where do I mount the bail on the boom"...??

I have 26"-28" from bottom of boom to top of cabin, so do I go 28" out on boom (45*) or further out (but then I lose mechanical advantage=downforce)...?

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Re: Want to Add Boom Vang PY26

I believe the rough rule of thumb is that the boom vang should intersect the boom at a 45 degree angle.

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post #7 of 16 Old 04-15-2012
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Re: Want to Add Boom Vang PY26

Squidd:
The PY26 Manual shows the boom vang installation and bail placement in the rigging schematic. If I remember correctly you said you got the manual with the boat. If not, it's available in the download section of the Paceship website.

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Re: Want to Add Boom Vang PY26

Read the Manual...?

Manual does show what looks like a 45* angle (doesn't have specific measurements) but It seems a bit short...?

I had seen another boat (not PY) that moved the base of vang out to toe rail at broad reach or run, to pull twist and looked like gybe preventer action...

Was wondering if a further out mounting point may have an advantage...

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post #9 of 16 Old 04-15-2012
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Re: Want to Add Boom Vang PY26

Using the vang as a preventer is not ideal, IMO.. you tend to lose the vang during gibes when you need it most.

If you want an easily adjustable, fine tunable powerful vang then double that entire 4:1, or go back to your 3:1 and double that for less line laying about, you'll end up with 8:1 or 6:1 which will be lots.

Along the lines of this from the Harken catalog



But... either the 3:1 or 4:1 will be much better than nothing...
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post #10 of 16 Old 04-15-2012 Thread Starter
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Re: Want to Add Boom Vang PY26

Harken catalog shows padeyes...?

I do have hardware to do that...(make 6:1 or 8:1) which would make the 45* more acceptable..

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