You can thank everyone next season when you still have a keel .Thanks for everyone’s responsives.
(Ha ha ha, I crack me up).
- Will (Dragonfly)
You can thank everyone next season when you still have a keel .Thanks for everyone’s responsives.
As far as I can tell the tensile strength of stainless bolts is 30,000+ PSI. Personally I wouldn’t say they “don’t matter much” relative to 700 PSI adhesive. Also, although the adhesive is spread over a larger area, when the keel is bouncing around in seas or striking a sea floor, the loads (well in excess of the keel’s weight) are going to be concentrated rather than spread across the full adhesive surface.I am 99 percent certain that they are referring to 5200 because 5200, as a marine adhesive and sealant, is basically in a category of one: it has the greatest adhesive strength (700 PSI) of anything on the market by a margin of at least 50 percent. 4200 is recommended, per 3M, only when you want the option of "disassembly," so it would make no sense for O'Day to deliberately use that instead of 5200 for a critical joint like the keel/hull. Or really anything else for that matter, because there would be only significantly less strength.
Thinking more about this, and specifically the fact that the configuration of the bolts in the drawing do not match the way they were done at the factory, leads me to conclude that in terms of the integrity of the keel/hull joint, the bolts do not matter that much. The most important element of the joint is the integrity of the adhesive joint, which, if applied properly to achieve the maximum bond, can more than hold the entire dry weight of the keel without the bolts