My '74 M17 had a 3/8 stainless bolt as stop pin, with nylon insert locknut. There was caulk covering both ends, which were recessed into the keel a bit so the head and nut did not stick out beyond the keel surface. Someone had done a crapola (technical term :-) repair on a busted out stop pin, with caulk and maybe some poorly applied resin. I re-built the area on both sides, taking it down to glass/resin where it had been poorly patched. The starboard side (head of bolt) was in much worse shape, the port side was only a little damaged. Bolt must have busted out bottom on starboard side, but not port. The old bolt was actually a little bit bent in the middle. After keel repairs, I put in a new bolt & nut, with the rubber hose in center as Tom suggests. The nut is barely snug - NOT tightened more. No need, it's just to keep the bolt in place. Tighter would put stress on sides of keel/across opening in keel. For any work on the full CB or pennant/shackle I would need to take the pin out. Why chip/grind away resin when I can just take the nut off & bolt out? cheers, John On 04/10/2019 06:48 AM, Gerry Lempicki via montgomery_boats wrote:
I think I asked this before, but it was probably buried in a long post. What was the original centerboard stop pin? Mine is missing. Everything else looks good; maybe a 5/16 hole through the port side of the trunk/stub keel, and a shallow hole inside the starboard side. I don't see any signs of threads in there. Was it a smooth pin that slid in and was secured with a sealer? Or were there threads originally? I'm going to put fuel tubing over mine, so maybe that will help hold it in place too?Gerry
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