Bunk replacement?

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warren631
Chief Steward
Posts: 93
Joined: Wed Dec 02, 2015 10:58 pm
Sailboat: MacGregor 26D

Bunk replacement?

Post by warren631 » Fri Apr 15, 2016 10:37 pm

I just bought a 88 26D on a 5-Starr 5S-172200V trailer. I have driven it about 120 miles with no problems except a little fishtailing if I go above 55. There are no rollers. The two longitudinal bunks are only supporting the hull at their front and rear ends. I think this might be bad for the boat. The middle of the bunks, just above the axial, don't touch the hull at all and are about 3 inches below the hull. Should I add supports to try to raise the middle of the bunks? Or should I install new bunks? Are new bunks supplied straight flat or are they 'bowed' to match the contour of the hull? Or do they 'bow' to the hull contour from the weight of the boat? If I replace the bunks how do I adjust them to the boat - just set the ends to the same height as the old ones? Sorry, lots of questions. Thanks for any answers.

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RussMT
Admiral
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Joined: Thu Oct 11, 2007 2:01 pm
Sailboat: MacGregor 26M
Location: Bozeman, Montana "Luna Azul" 2008 M 70hp Suzi

Re: Bunk replacement?

Post by RussMT » Sat Apr 16, 2016 9:22 am

My first thought is that it's probably fine.

If you could post a photo, that might help.

Sumner is my resident trailer expert. He has some great stuff here
http://purplesagetradingpost.com/sumner ... index.html

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Tomfoolery
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Joined: Tue Jul 05, 2011 9:42 am
Sailboat: MacGregor 26X
Location: Rochester, NY '99X BF50 'Tomfoolery'

Re: Bunk replacement?

Post by Tomfoolery » Sat Apr 16, 2016 9:59 am

Personally, without knowing much about the 26C, I'd be inclined to match the OEM bunk arrangement. Boats often have thicker hulls and/or ribs or structural bulkheads where they were intended to be supported while bouncing down the road. That may not be the case, but I'd at least look for stiff structure where the original bunks were, and at least try to get support there rather than on some large-span oil can surface. As a starting point, at least.

With longitudinal bunks of some great length, unless they're straight and intended to be bent by the boat weight (thereby distributing the force over the length), there will be a hard spot wherever the support for the bunk is. That may be ok, or it may not be ok.

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