H36 Boom Vang
- Thread starter kair
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Steve you need bails on the boom and mast base
My H37C is rigged with a soft vang. The mast bail is anchored by the bolt that goes through the flange that is part of the mast partner just above the deck. there is another bail anchored to a through bolt on the boom perhaps 3 feet aft of the gooseneck. You want some pics?
My H37C is rigged with a soft vang. The mast bail is anchored by the bolt that goes through the flange that is part of the mast partner just above the deck. there is another bail anchored to a through bolt on the boom perhaps 3 feet aft of the gooseneck. You want some pics?
Yes
Scott,
If yo have pictures, that would be helpful. I should have installed a bail when the mast was down.
Thanks.
Steve
Scott,
If yo have pictures, that would be helpful. I should have installed a bail when the mast was down.
Thanks.
Steve
check back this weekend for pics
Do you have the thru bolt at the mast base already ( holding the mast) if so, just get a longer bolt and install a bail on the outsides of the bracket the bolt goes thru. the boom bail is easy, just don't drill thru your internal outhaul.:cry:
Do you have the thru bolt at the mast base already ( holding the mast) if so, just get a longer bolt and install a bail on the outsides of the bracket the bolt goes thru. the boom bail is easy, just don't drill thru your internal outhaul.:cry:
On H356, I ordered a heavy-duty strut from selden and then made a vang with two triple blocks from Garhauer, leading the vang line back through an open stopper on the cabin top.
Steve
I also have an H36C, 1980 Hull #36. No boom vang when I bought the boat about two years ago. Whoa!, didn't the boom ride up real high when the main sheet was let out for a beam reach or a following wind. And no real way to control the main sail twist.
I'll take some pictures of my modification/installation today when down at my boat and post tonight. Not necessary to have the mast down. Mine's a soft vang since I've retained the topping lift to keep the boom suspended when the sail isn't up.
This is the time of year for marine flea markets. Good for finding the miscellaneous blocks/fittings if on a budget. The blocks of course need to be in OK condition and strong enough. But for a boom vang system, the amount of line runout through the blocks is very minimal, compared to (say) the mainsheet system and the jib sheets through the fairlead blocks. Hence, (in my opinion) there isn't a good cost-to-benefit ratio to use the latest hi-tech low friction blocks if something simpler will do the job.
rardi
I also have an H36C, 1980 Hull #36. No boom vang when I bought the boat about two years ago. Whoa!, didn't the boom ride up real high when the main sheet was let out for a beam reach or a following wind. And no real way to control the main sail twist.
I'll take some pictures of my modification/installation today when down at my boat and post tonight. Not necessary to have the mast down. Mine's a soft vang since I've retained the topping lift to keep the boom suspended when the sail isn't up.
This is the time of year for marine flea markets. Good for finding the miscellaneous blocks/fittings if on a budget. The blocks of course need to be in OK condition and strong enough. But for a boom vang system, the amount of line runout through the blocks is very minimal, compared to (say) the mainsheet system and the jib sheets through the fairlead blocks. Hence, (in my opinion) there isn't a good cost-to-benefit ratio to use the latest hi-tech low friction blocks if something simpler will do the job.
rardi
No thru bolt
The mast base doesn't have a thru bolt.
Should I need one to hold the mast? I have internal wiring that I rewired when the mast was decommisioned.
I remember that the mast step is ~2" ....might weaken the step if a 3/8" bolt to go through.
Steve
The mast base doesn't have a thru bolt.
Should I need one to hold the mast? I have internal wiring that I rewired when the mast was decommisioned. I remember that the mast step is ~2" ....might weaken the step if a 3/8" bolt to go through.
Steve
Boom Vang
A few years ago I installed a rigid vang from Garhauer. It fit perfectly and works great. I did away with the topping lift and my sail shape is much better. I am still learning how to trim for the best performance, but that probably is a lifetime task.
Joel
A few years ago I installed a rigid vang from Garhauer. It fit perfectly and works great. I did away with the topping lift and my sail shape is much better. I am still learning how to trim for the best performance, but that probably is a lifetime task.
Joel
H36 Cherubini Boom Vang
Steve:
Attached are pictures of the boom vang arrangement that I installed to correct my boat's vang-less condition.
My boat's mast had an unused through-bolt hole already drilled at the base of the mast. I used it to install the mast bast bail -- also I've since used to attach the block for the mainsheet and a cunningham. The bail was salvaged from a boat that cracked its boom. I bent it a bit to fit the diameter of the mast. I drilled new through holes in the boom for the vang bails. My setup is different from most since I decided to distribute the stress on the boom between two bails. All boom vangs that I have noticed have one attach point on the boom. Another reason is that my vang isn't convential is that I designed it around blocks and parts that were in my second-hand box. One thing to note is to place nylon washers between the boom (or mast) and the bail to allow the bail to swivle without eating into the softer aluminum. Also use a dielectric paste everywhere that SS meets aluminum to retard galvanic corrosion.
Check the Harken website for diagrams of various boom vang set ups. Also the Garhauer site as suggested by Joel.
Thinking outside the box -- if my boat didn't have a through hole already at the mast base, I think I would have looped some hi-tech line (like amsteel dyneema or vectran) around the base of the mast to make a "bridle". Then would have devised some way to keep it from riding up the mast. Then attached the mast end of the boom vang to the bridle. For example, 3/8" diameter of this line has breaking strength of 15,000 lbs and very little stretch. The boom vang would never put this much strain. Also I've seen pad-eyes screwed into the base of the mast.
Happy project progress!
rardi
Steve:
Attached are pictures of the boom vang arrangement that I installed to correct my boat's vang-less condition.
My boat's mast had an unused through-bolt hole already drilled at the base of the mast. I used it to install the mast bast bail -- also I've since used to attach the block for the mainsheet and a cunningham. The bail was salvaged from a boat that cracked its boom. I bent it a bit to fit the diameter of the mast. I drilled new through holes in the boom for the vang bails. My setup is different from most since I decided to distribute the stress on the boom between two bails. All boom vangs that I have noticed have one attach point on the boom. Another reason is that my vang isn't convential is that I designed it around blocks and parts that were in my second-hand box. One thing to note is to place nylon washers between the boom (or mast) and the bail to allow the bail to swivle without eating into the softer aluminum. Also use a dielectric paste everywhere that SS meets aluminum to retard galvanic corrosion.
Check the Harken website for diagrams of various boom vang set ups. Also the Garhauer site as suggested by Joel.
Thinking outside the box -- if my boat didn't have a through hole already at the mast base, I think I would have looped some hi-tech line (like amsteel dyneema or vectran) around the base of the mast to make a "bridle". Then would have devised some way to keep it from riding up the mast. Then attached the mast end of the boom vang to the bridle. For example, 3/8" diameter of this line has breaking strength of 15,000 lbs and very little stretch. The boom vang would never put this much strain. Also I've seen pad-eyes screwed into the base of the mast.
Happy project progress!
rardi
Attachments
Steve,
Nobody answered your question about the need for a bolt thru your mast. No you do not need a bolt. the step base handles lateral loads and the mast stays put vertically by weight and the downward pressure of the shroudes and stays.
Rardi has a different mast step than my 81' H36. I'm attaching pictures of the mast step prior to re-installing after SEATOW finished THEIR post-Katrina damages to my boat. (They removed the mast step instead of just removing the UNDAMAGED mast in preparing to move the boat from it perch next to a tree.)
Note that the mast step has the sheve exits and the mast sits at the top of the step.
Perhaps my step is different than others, I don't know for sure.
Nobody answered your question about the need for a bolt thru your mast. No you do not need a bolt. the step base handles lateral loads and the mast stays put vertically by weight and the downward pressure of the shroudes and stays.
Rardi has a different mast step than my 81' H36. I'm attaching pictures of the mast step prior to re-installing after SEATOW finished THEIR post-Katrina damages to my boat. (They removed the mast step instead of just removing the UNDAMAGED mast in preparing to move the boat from it perch next to a tree.)
Note that the mast step has the sheve exits and the mast sits at the top of the step.
Perhaps my step is different than others, I don't know for sure.
Attachments
Mast Step
Joe,
Your mast step is very different from mine. You or your PO must have made some mod. It looks difficult to have the lines run through the step and out the sheave at the bottom while balancing the mast and also trying to install the electrical connectoins.
My 80H36 step looks very similiar to Rardi's setup. I am going to try to put a bail at the bottom of the mast.
thanks for the post.
steve
Joe,
Your mast step is very different from mine. You or your PO must have made some mod. It looks difficult to have the lines run through the step and out the sheave at the bottom while balancing the mast and also trying to install the electrical connectoins.
My 80H36 step looks very similiar to Rardi's setup. I am going to try to put a bail at the bottom of the mast.
thanks for the post.
steve
Same mast step
That black step is the same as the one on my '82 H30, from what I can tell it's original equipment.
That black step is the same as the one on my '82 H30, from what I can tell it's original equipment.
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Re: Same mast step
Jim &Tim:
Thanks for the pictures of your mast steps. I find it interesting how same model boats can have such different fittings depending on how far along (or not) the manufacturer is with the hull#'s.
Also interesting is that just 4 screws (looks like 1/4"?) can handle all the lateral forces at the mast base.
rardi
Jim &Tim:
Thanks for the pictures of your mast steps. I find it interesting how same model boats can have such different fittings depending on how far along (or not) the manufacturer is with the hull#'s.
Also interesting is that just 4 screws (looks like 1/4"?) can handle all the lateral forces at the mast base.
rardi
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