Re: Stus-List Advice for PYI shaft seal maintenance

2017-06-04 Thread Eric Frank via CnC-List
Josh, I do use a MacMaster shaft collar and it works well. The problem is that the PYI shaft collar does not slide easily on the prop shaft, so I can't push it aft to compress the bellows. Maybe some lubrication would help. And I won't loosen the PYI collar again on haul out, as your experien

Re: Stus-List Advice for PYI shaft seal maintenance

2017-06-04 Thread Jim Watts via CnC-List
A regular zinc donut works well as a retainer, no need for fancy. It also provides insurance against the shaft sliding out backwards if the coupler and everything else lets go. Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 4 June 2017 at 03:22, Josh Muckley via CnC-List wrote: > The re

Re: Stus-List Advice for PYI shaft seal maintenance

2017-06-04 Thread Josh Muckley via CnC-List
The requisite compression is that which eliminates leakage. If your engine mounts are soft, the prop thrust can push the engine forward and spread the bellows and collar causing a leak...While in forward. The conventional wisdom is that the shaft should have dimples drilled for the grub screws. I

Re: Stus-List Advice for PYI shaft seal maintenance

2017-06-03 Thread Marek Dziedzic via CnC-List
st@cnc-list.com> Cc: Eric Frank<mailto:efran...@mac.com> Subject: Stus-List Advice for PYI shaft seal maintenance For winterizing the PYI shaft seal on Cat's Paw, it was recommended that I loosen the SS collar on the prop shaft so the rubber bellows is not compressed. I'm

Stus-List Advice for PYI shaft seal maintenance

2017-06-03 Thread Eric Frank via CnC-List
For winterizing the PYI shaft seal on Cat's Paw, it was recommended that I loosen the SS collar on the prop shaft so the rubber bellows is not compressed. I'm now trying to compress the bellows again before launching - PYI recommends compressing it about 3/4 inch. It's difficult to compress th