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post #1 of 16 Old 05-18-2015 Thread Starter
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Boom Gallows

Hello,

I have some boom gallows installed on my boat. Unfortunately, for some reason it is too high. Either the sail stretched or it is a different sail altogether, the boat is new to me.
I have three options: get a new sail, shorten the boom gallow, get rid of the boom gallow. I do have a topping lift installed.

Anyway, I'd be happy if the folks here who have boom gallows on their boats could comment on their usefulness and how exactly they use it, particularly when reefing.

It seems to me, there are not that useful, but I may be wrong.
Cheers,
Phil
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post #2 of 16 Old 05-18-2015
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Re: Boom Gallows

OK , we have a boom gallow on our boat . Not really sure what you mean by some boom gallows ? Here is a picture that shows our gallow , please note the Stern of the boat . What type / kind of boat do you have ?
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post #3 of 16 Old 05-18-2015
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Re: Boom Gallows

i have a boom gallows on my nimble 30 express. i have a pro furl in boom furler with a fully battened main. i have no topping lift. i installed a 3 1/2 " wood with a v notch & hinges so i can tip it out of the way when the sail is up. when i tip it up i put the boom in the notch & furl the sail. i tighten down the sheet & it holds the boom securely no the boom gallows.
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post #4 of 16 Old 05-18-2015 Thread Starter
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Re: Boom Gallows

I meant a boom gallows. (funny word, one gallowS!)
Anyway, the boat is a Fast Passage 39, but it should not matter. The gallows is in front of the dodger.
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post #5 of 16 Old 05-19-2015
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Re: Boom Gallows

If this is a new-to-you boat the first thing I'd want to check is that you're getting 'full hoist' on the main. If it's a bigger boat than you're used to you may simply not be getting enough halyard tension to lift the boom to it's proper height.

The boom gallows can be useful in that it gets the boom in a very secure place in a serious blow (when you're on a trysail).. it does protect your dodger from an inadvertant drop or topping lift failure, and not having a boom that is free to swing (even a little) in a rolly anchorage can save the annoyance of the noise that can create down below.

It's possible the sail has stretched, also possible the sail was 'new to the boat' and never properly fitted, but I'd look for the simplest solution first. Also, any opportunity to talk to the PO about that? presumably he/she used the boat and would have seen the same problem.

A sailmaker could probably simply raise the clew a few inches at minimal cost (kinda like a permanent flattening reef) and that might be a quick solution as well if your halyard tension is appropriate.
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post #6 of 16 Old 05-19-2015
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Re: Boom Gallows

If it helps: not having much room to store a proper boom gallows, I inherited the idea from the PO of using two boat-hooks set up tee-pee fashion.

Although it's only used back at the slip, it works fine for me.

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post #7 of 16 Old 05-19-2015
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Re: Boom Gallows

Does your goose neck fitting allow the boom to raised? Proper sail hoist here could be key. Easing the main sheet before hoisting the main, cunningham if fitted slack, no mention of boom vang....Tighten up on the topping lift to ease the pressure on lifting the main and boom too. Some pictures will help.


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post #8 of 16 Old 05-19-2015
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Re: Boom Gallows

I designed/made a boom "gallows" that folds up for storage. It has 1 1/2" ash legs and a plywood sandwich apex at the top which is cut to match the boom shape. Don't think I'd ever chance using it with the sail up. Actually have never heard of anyone using one with sail up which seems like a fairly dangerous thing to do. Maybe others can chime in on this. Have always thought the function of one of these is for boom storage when not in use to take the load off the topping lift and stop the boom from swinging.

Here's a good piece from Practical Sailor: http://www.practical-sailor.com/news...s-10484-1.html

So it seems like they are used in sail transitions to keep the boom steady while reefing or raising sails which seems logical although the logistics of that seem iffy. +1 on checking the gooseneck height.

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post #9 of 16 Old 05-19-2015
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Re: Boom Gallows

Cool boat . FAST PASSAGE 39 sailboat specifications and details on sailboatdata.com
You have some really good responses here ,good luck .
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post #10 of 16 Old 05-20-2015
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Re: Boom Gallows

Faster's advice is spot on - full hoist.

I would suggest before you do 'any' modifications to sail or gallows that you first raise the sail and check the tack angle that the sail makes with the mast - with the sail raised check the angle that the top of the boom makes with the mast .... it should be close to 90 (89 to 87) if the sail is properly being raised. Just use a large square 'machine cut' piece of cardboard to check this ~90 tack angle.

A. If the sail is older and made from 'stretchable' woven dacron fabric OR where the boltrope (3 strand rope inside a sleeve at the luff) has shrunken ... If so, then the sail will 'set' with the boom lower than the gooseneck (and will hit the gallows). If this is the condition and the tack angle is MORE than 90 you have two options: 1. apply more strain to the halyard which will cause the aft end of the boom to rise; or, 2. if the previous doesnt correct the situation then take the sail to a sailmaker and have the boltrope 'eased'/adjusted.

B. If the sail is newer (made from 'high aspect ratio') woven dacron fabric AND the tack angle is close to 90 (boltrope not 'shrunken' due to age or high usage) .... either modify the height of the gallows or recut the sail.

In all cases when the sail is properly raised and that tack angle is correct, you'll probably want a minimum of 4-5" clearance between the boom and the gallows .... so that you can overstress the leech (cup-up) by the mainsheet for when 'power pinching', etc.
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