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Current Replies for Gear reduction ratio
  Gear reduction ratio (JRTauber)
Posted: 1:44:24 pm on 8/13/2012 Modified: 4:40:13 pm on 8/13/2012
Does anyone know the gear reduction ratio for a Yanmar 1GM10 on the C&C 27-V. Has anyone installed a Kiwi feathering prop?

Jerome Tauber
C&C 27 MKV Fast Lane
3 Mile Harbor, East Hampton, NY

  Re: Gear reduction ratio (ALAN FORD)
Posted: 7:32:58 pm on 8/14/2012 Modified: 6:07:12 pm on 8/15/2012
I looked at the online 1GM manual under item 2. 'specifications', then 'clutch', then 'reduction gear', and it says the following for 'forward and reverse':-
2.21/3.06.    or   2.62/3.06.    or   3.22/3.06
The reverse is constant, but perhaps the forward varies depending on the fitted prop? Someone else may know about your Kiwi feathering prop?

Alan of SMOKE 1984 Mk V 002

Since we are talking about boats, not cars, and I hate using landlubber language anyway, please read AHEAD instead of forward, and ASTERN instead of reverse, in the above rambling. Thank you.

Alan of SMOKE 1984 Mk V 002