Rudders - Pully purchasing power

A forum for discussing boat or trailer repairs or modifications that you have made or are considering.
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Terry
Admiral
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Location: Vancouver, B.C. Canada. '03 26M - New Yamaha 70

Rudders - Pully purchasing power

Post by Terry »

Has anyone attempted to make it easier to haul those rudders up?
I saw one mod where someone made an attachment to the stern rail seats on an M but I do not have those on my M.
There is a continuous loop that goes from one trailing edge of the rudder up over the stern through the inside and then down and out to the leading edge of the rudder.
I am having difficulty trying to figure how I can put a 2:1 or 3:1 or 4:1 purchasing pulley system with the limited line ends I have. There is only one available end and it is attached to the trailing rudder edge. It seems every time I try to do it I am short of ends. I have my mainsheet tackle available to play with as it was replaced with the bearing airblocks from BWY.
The Admiral is unable to yank those rudders up, so I am looking for a way to make it easier when I am not immediately available.
Any ideas?
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c130king
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Post by c130king »

Terry,

I got my :macm: used and the PO mod'ed a pulley system on the rudder up-hauls. Works great. I am not a pulley engineer but I think it is a 2:1 system.

I am sailing this weekend (boat is 2 hours away) so I will take some pictures and post on Monday night or Tuesday. I believe I saw something like this on the mods page. You may want to look there.

My :macm: is the only Mac I ever seen so I am not sure what "normal" looks like. But the system I have seems to work very nice.

Jim
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beene
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Post by beene »

Jim

I would love to see those pics too.

It would be great if my girls could lift them up if something should happen to me and we needed to get back in a hurry.

Tks

g
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parrothead
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Location: Former vessel: '05 M "Blue Heaven" - Nissan 50 TLDI --- Now owner of a Gemini 3400

Post by parrothead »

A 2:1 purchase system is easily done with a small block and a short length of line for each rudder. Untie the existing up-haul line from the rudder, run it through the block, and then terminate it with a bowline knot through the eye strap where the lifeline terminates. Connect the block to the up-haul hole in the rudder with a short piece of line. See the result below -- lifting the rudders now requires half the effort. Others have attached blocks directly to the rudders at the up-haul holes with stainless shackles - but I prefer to keep the blocks out of the water [and the short lines cost less than ss shackles].

http://www.macgregorsailors.com/mods/fullpics/1018.jpg

FYI - I have employed pretty much the same approach to gain a very useful 2:1 advantage on the daggerboard up-haul line...... just posted a description and photo of the daggerboard rig on the Mac Mods Page.
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c130king
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Post by c130king »

I will go ahead and post more pics of my system but Parrothead's looks pretty much just like mine.

The daggerboard on my boat was not modified and that would be a good mod. I frequently have to stand up to pull that thing in.

A future mod for sure.

Jim
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