Hi Dave, I had my transmission rebuilt two years ago. At $1,750 (including removal, reinstallation, shipping and rebuild) it was not something to do without some more troubleshooting. I had a 2-blade non-geared Martec on Mojito that was terrible at opening when moving even after a rebuild (sounding like your issues) - I swapped to a Flexofold and am very happy with the results.
Tim Mojito C&C 35-3 Branford, CT On Mon, Feb 2, 2015 at 9:46 PM, David Jacobs via CnC-List < cnc-list@cnc-list.com> wrote: > > > *My 1984, 35 MKIII has its original Yanmar 3GM and a 1984 Martec folding > prop. I was experiencing really bad vibration at the end of the season as > if the prop wasn’t opening or as if only 1 of the 2 blades was unfolding. > I’d put it in reverse (during which there was never any of the vibration) > then put it into forward quickly and hard and after several attempts it > would usually be OK until I slowed down like when approaching the mooring > and then it would happen again.* > > > > *I sent the prop back to Martec to get it refurbished and when speaking to > them they suggested that although the prop was in need of refurbishment > that the vibration I was experiencing might be due to the engine clutch > slipping. When I asked a Yanmar repair guy about that he said that might > indeed be the issue. Apparently the only way I’m going to be able to tell > if the refurbished prop was the cause is when its back on the shaft and the > boat’s back in the water. Since I really don’t want to miss any of the > short season, racing beginning just a few weeks after the boat’s back in > the water and the cost and hassle of pulling the boat out again after it’s > launched in the spring, I’m leaning towards taking prevent yanking the > transmission out, bringing it to a shop and having it rebuilt.* > > > > *Have any of you had this experience? Has having the prop fixed/replaced > always solved the issue? Or, is there a good possibility that it is indeed > the transmission? Any experience and/or advice the group can provide would > be greatly appreciated.* > > > > *Dave* > > *Saltaire* > > *Bristol, RI.* > > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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