That looks great! I assume you were getting excessive vibrations before? As you know I do and my seal does leak some. Where does the vent from the seal lead to? I assume you don't need the cooling port that goes to your heat exchanger since you're motoring under 10 kts. Also did the R&D Engine mounts lessen the vibration as well? thanks Rocky
On Mon, Jun 29, 2020 at 6:15 PM Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > 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 > >
_______________________________________________ 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
