Quote from: girmann on May 06, 2024, 12:25:37 PMQuote from: KWKloeber on May 05, 2024, 10:42:35 PMPrevious info about my "no aft smile" and the loose aft nut (in no particular order):
I think that the only way you will really know the answer to this question is if you have a mechanical engineering friend. Knowing that type, turn it into some kind of bet and offer them a case of their favorite beverage so they do a "Finite element analysis" of the keel/hull joint blocked in the front or blocked fore and aft.
Logic dictates that the bolt isn't stretching, but the piece of keel that sticks out forward of the forward most keel bolt can bend. I'm not saying it does bend, I'm saying it "could". FEA (finite element analysis) would tell you exactly how much force you would need to create a "smile"
Mark
Mola Mola
Quote from: KWKloeber on May 05, 2024, 10:42:35 PMPrevious info about my "no aft smile" and the loose aft nut (in no particular order):
QuoteThe aft-most nut was so loose my thumb turned itI've previously posted about my same experience re: the fingertight aft nut and keel bedding so many times that my head hurts every time I repost about it.
QuoteThe washers were set into the original gelcoat, which formed a surprisingly poor seal;Are you thinking that CTY bolted-up the keel nuts/washers into wet gelcoat? Doesn't seem logical to me. What does, is the known issue on C-30s of torquing the nuts so many times that the washers compress the glass and bury themselves in the gelcoat.
QuoteWhether or not that underlying bedding is still intact is the (hopefully less than) $64,000 question.IIWMB my hem/haw would not be whether to drop the keel -- rather, my first step would be to decide WHEN to determine if I EVEN NEED TO drop the keel. That is, answer that question right now — OR just go sailing now and answer it in fall '24 / spring '25.
hemming and hawing over whether to drop the keel.
Quotepossible damage from and difficulty with separating it, and I'm placing a lot of trust in the yard to do everything rightRemoving the keel is lightyears distant from being rocket science.
Removing the keel is also a costly job that could lead to more costly jobs on a 34 year old boat.
Quotecheck torque often.See above for (IMO) the danger of too-often and too-tighting of the keel nuts.
Quotewater coming FROM inside.