Bill, I'm curious how that works having a spare seal?
As far as I can tell, the primary failure mechanism for the PYI is the bellows. It's hard to keep a spare of one of those. The Lasdrop Gen 2 has a semi rigid hose instead of a bellows and terminates with a SS plate which stays stationary. The carbon ring is mounted to the shaft in a manner which does not damage the shaft. This leaves the carbon ring as the rotating piece. In the gen 2 the rotating part attached to the shaft is also a spring pack which is how compression is maintained. Since it is a spring it is also less prone to relaxing over time such as a typical bellows system. Josh On Wed, Dec 11, 2019, 2:21 PM WILLIAM WALKER via CnC-List < cnc-list@cnc-list.com> wrote: > Josh, > The PYI seal also is capable of storing a spare seal on the shaft in > front of the seal. I have one. > Bill Walker > C & C 36 > Evening Star > Pentwater, Michigan > ------------------------------ > On Wednesday, December 11, 2019 Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > Yep vented. > > The PYI and Lasdrop seals rated the highest in a practical sailor review. > The lasdrop gen 2 has the ability to store a spare seal on the shaft and > the rated service life is 8 to 10 years. > > I'm leaning towards the Lasdrop Gen 2 for my installation though I'm > tempted to keep the PYI. The new bellows kit is 1/3 of the price of the > new lasdrop seal. > > https://www.practical-sailor.com/issues/26_22/features/4431-1.html > > I'm also considering a new auto prop instead of paying to get my max-prop > rebuilt. > > Josh > > On Wed, Dec 11, 2019, 10:56 AM Ken Heaton <kenhea...@gmail.com> wrote: > > Is yours vented? The vent was added some years ago. With it you never > need to burp the seal. We don't have the vent so occasionally we do have > to burp it. If I ever replace it I will put the same dripless, but with > the vent. > > Ken H. > > On Tue, 10 Dec 2019 at 13:48, Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > > Alright folks, > > I'm looking for thoughts on a replacement for my PYI dripless shaft seal. > It has worked fine and I'm not afraid to stick with it but I'm looking for > possible options or improvements. > > I've heard of Tides Marine making one and Sailor Sam's sells 4 different > designs by the name Last Drop. > > I'll be pulling and truing the shaft, rebuilding the prop, replacing the > cutlass bearing, replacing the seal. Anything else I'm forgetting while I > have it apart? > > > 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 > >
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