I haven't been following this thread, but I might add that a loose prop can lead to a worn cutless bearing which can lead to a scored shaft.
Alan Bergen 35 Mk III Thirsty Rose City YC Portland, OR On Thu, Aug 27, 2020 at 11:27 AM David Knecht via CnC-List < cnc-list@cnc-list.com> wrote: > We returned from our brief cruise yesterday and had no problems motoring. > I just finished a discussion with PYI to see whether the Maxprop could be > the cause of the vibration and they said the symptoms are consistent with > the Maxprop needing to be reconditioned. They said that if there is too > much wiggle in the blades, when subjected to loading and unloading in > waves, the blades can catch in slightly different places and that leads to > vibration. Going to reverse and then back to forward would reset the blade > position. He said I can test by seeing how much wiggle there is in the > blades when locked in forward. It should be less than 1/8”. More than > 3/16” is a problem. I may try to dive under to see, but likely will wait > until haul in Fall. So I think that is the likely cause of our vibration > issue. > I am still unsure what the symptoms of a transmission needing rebuilding > would be. If anyone can speak to symptoms of that problem, I would > appreciate it as I suspect they are different. > > I should also note that I have always had a problem with the engine > stalling when I shift into reverse. I don’t know what is causing that (PYI > did not think it related to the prop) so if anyone has ideas I would love > to hear them. It is always nerve racking coming into a dock and worrying > that I will not be able to slow down. > > As to shift lever- it looks to me like the shifter is designed to be able > to attach in either orientation. I think that in order to match normal > Edson lever movement (down = forward) they had to put it on pointing down. > In order for that to work, they had to grind out some of the stringer. I > realize in retrospect that there is no way shifting could have worn that > away as you would not have been able to shift at all until it wore down > some and that would make no sense. But both my wife and I think that up is > more natural for forward gear, so I am happy with the change. > > > Dave > > S/V Aries > 1990 C&C 34+ > New London, CT > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- > https://urldefense.com/v3/__https://www.paypal.me/stumurray__;!!LIr3w8kk_Xxm!_cwu2IZ62KVSetW0HkRr1Td6TiPW__YcsiasCf7U7eUBiMlERrpnUnHJ3_mOZUSx0Eg$ > >
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