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Old 22-02-2015, 22:55   #16
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Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
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Re: Flex engine/shaft couplings worth it?

Quote:
Originally Posted by westerly2 View Post
I remain confused. The problem with my very flexibly mounted Yannmar with one fixed point (cutless bearing) is that the gearbox bearing is anything but fixed. It is moving quite a bit. ZF recommends a flexable connection between the gearbox and propeller shaft.
Yanmars do dance around a lot at idle and sometimes the shaft hits the stern tube like on mine so I went with a Pythondrive like a lot of yanmar owners do. Pythondrive is now run out of NZ but there are others like Sigma drive or Aquadrive which are so close alike that I'd be willing to bet that most of the parts will interchange. See my post above.
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