Steve - Funny! That is spot on! Been there, done that! In my old 23' Venture of Newport
, I was coming into the dock
quite nicely with a big twin engine (outdrives of course) power boat
docked in front of me. I knew there would not be a problem as the conditions were good. I hit reverse to do the final stop behind the power boat
and of course, reverse chose that moment to fail. Needless to say, the boat owner was less than impressed. Happily, no damage to his boat. That was many years ago.
I have googled, I have called, I have talked to PYI (R&D couplers) I had thought "Boy, this is going to get expensive..." Nobody makes the original rubber composite coupling that I can find, and nobody has heard of it.
Looking closely at the coupling, I see where the rubber is in good shape but the flange that was vulcanized to it had rusted between the rubber and the flange su the rubber was not "glued" to the metal anymore. After some calling I found a company in Portland
that said they can re-vulcanize the coupling. I will give trhis a try, but I am a little leary of the results in the long run.
The dimensions of the coupler are pretty standard (or should I say "common") - 4" diameter flange, 3 1/4" bolt spacing. Where the problem comes in is the length of the coupler - 3" fore and aft length. Nobody has anything close to that unless I want to start changing flanges and shaft lengths and all. I'd rather try to find a direct replacement for obvious reasons. I also feel that with a coupler that is less than 1/2 the length of the original, the stress induced by the shaking of the engine would be amplified in the shorter coupling. I'm not sure I am expressing my thought quite right, but I think you will understand what I mean anyway. A 3" coupling can compensate for the shaking of the engine better than a 1 1/4" coupling can.
Watching the shaft, coupling, stuffing box and all after I jury rigged the coupler, I don't think the alignment is bad at all. Of course, I have not taken any measurements so I could easily be wrong.
- you know the Farymann! It DOES shake!
Pmeyer - Thanks for that information. I did check it out.
MidlandOne - I will check out the polyflex couplings.
PBlais- I think I will take your advice and have the shop check the alignment after I get the coupler replaced. That is a job I have never attempted. I'm not sure that I wouldn't just make it worse.
Mike D. - I checked with a Buck Algonquin distributor and they carry flanges, but not the coupler.
Thanks all for your help here.