My wife and I are presently cruising in Mexico
. As we were pulling up to the fuel dock
at San Jose del Cabo, the slip coupling on our 25-year old Volvo
failed and the prop shaft tried very hard to leave the boat
entirely. The remnants of the old shaft coupling kept it from doing so.
Since the engine has long since been discontinued, no new replacement parts
were available. Used parts
were questionable and were likely going to require machine work
on the shaft and there are no haul-out facilities there. Ultimately, I found an R&D Flex Coupling and shaft coupling from PYI, Inc. in Lynnwood, Washington
. They had replacement, bolt-on parts on the shelf and they overnighted them to us the same day (getting caught in customs
in Guadalajara but that's a different story). After fitting all the parts together, it left our shaft about 4" longer than it had been. Since then, we have logged over 150 hours of motoring time (way too much but, again, that's another story) and have had no problems and it seems smoother than it was before.
By the way, our Dutch-built Contest 48 came from the factory with very little clearance between the prop and the cutlass bearing - just enough for an L/C zinc anode. The cutlass bearing has no other source for cooling
other than the water that makes it's way past the zinc and we've never had a problem.
Fair winds and calm seas.