So I needed to get launched and over to another marina for some extended maintenance. It was a nice chance to see how the new drive train worked. Everything was fine and more or less "normal". Shaft seal didn't leak and vented just fine, no new or excessive vibes in the drive line.
Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Tue, Jun 16, 2020, 09:02 Josh Muckley via CnC-List <cnc-list@cnc-list.com> wrote: > I've asked a few of you personally so if this is a repeat then please > disregard. > > I'm in the process of replacing/rebuilding the drive train on my C&C 37+. > In the process I'm replacing the shaft, shaft coupling, shaft seal and > strut bearing. > > The old seal was a PSS seal and the old coupling was a standard solid > coupling. I had had a R&D Marine (PYI) coupling dampener and planned to > reuse. The new seal is a Last Drop II from Sailor Sam's. The new coupling > is a split coupling from R&D Marine. The new seal and coupling have added > length which ultimately leaves only about 1.5 inches of free shaft at most. > > So here comes the question. > > First: Any concerns with only having 1.5 inches of free shaft? I have 3. > - getting the coupling dampener installed requires the couplings to be > separated by not just the thickness of the dampener buy rather by the > thickness of the coupling bolts. > - getting the split coupling on could be complicated > - with the shaft seal bottomed out on the log there is less articulation > available in the seal tube. The seal uses a delrin bearing to center > itself on the shaft but without room to flex the bearing will just ride > harder on the shaft and can even overheat. > > Second: > The seal engages with the shaft log by at least 4 inches. If I cut the > log shorter, then I could push the seal deeper onto the log and get a bit > more free shaft and room for the seal to articulate. Can any of you see > any drawbacks or pitfalls to cutting the log short? > > > Thanks, > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > _______________________________________________ > > 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://www.paypal.me/stumurray > >
_______________________________________________ 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://www.paypal.me/stumurray
