Rebedding bobstay chainplate

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Apr 15, 2013
3
Catalina C27 Tuftonboro
Hi All,

I had to pull the bobstay chainplate this spring to replace the backing block that was on it's way out. I have a question regarding the preferred method to rebed the bobstay chainplate.

Butyl Tape? I'm rebedding some of the deck hardware with MS's butyl tape (great to work with :)) but wasn't sure if I could use that effectively here. Since the bobstay chainplate is in and out of the water a lot, I figured butyl tape wouldn't be preferred...

West system 105/406? Seems straightforward for this work - plus the backing plate will be seated with this - plus I was going to use this anyway to match the curvature difference between the chainplate and the bow. Is something more flexible preferred for this application?

3M 4200? I do not want to mess around with 5200 for this, since I see rebedding this chainplate again in the future - but given the sealant + adhesive + flexibility + removability qualities...


Appreciate the advice anyone has to offer.

Thanks - Chris
 
Jun 9, 2008
1,801
- -- -Bayfield
I would use a polysulfide caulk like Boat Life's Life Calk or 3m's 101. It is good under the waterline and will stick to fiberglass and metal (disimillular materials). That's my 2 cents.
 
Aug 27, 2011
408
Catalina 27 Titusville, FL
I would check with MaineSail, but I would use the butyl tape. That is a perfect substance for below the waterline.
 
Apr 15, 2013
3
Catalina C27 Tuftonboro
Here's a view from either side of the chainplate. You'll notice there's also some repair work that I'm in the middle of doing, as well as removing the previous silicone from the area.

Bow plate port side.jpg

Bow plate starboard side.jpg

I reached out to Maine Sail about using the butyl tape - that would be great, since working with it is much easier.
 

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