Negative PSS story
Frank, I also liked the simplicity of the PSS and have thought about it, but earlier this summer a CS33 owner on Lake Ontario posted on the CS owners user group his story of hitting a log and having the PSS seal go out of alignment. Needless to say I am sticking with the conventional system. Here is the post:Hi All, I know there was a discussion about dripless shaft seals awhile back. We had aninteresting episode on the weekend. We hit some debris with the propeller. Novibration, still driving along. In a few minutes, the high water alarm went off(very loud). Water was coming into the bilge from aft at about the same ratethat the electric pump could empty it. My crew climbed into the emptied lockerand checked for broken shafts, holes in the hull, etc. About that time, thewater stopped coming in. (In the meantime our cruising companions andindirectly, the Coast Guard had been activated. Our thanks to all for standingby). We motored home at 5 knots, then had a friend dive on the prop, etc. Just oneinsignificant mark, and no damage or increased play.It would appear that the shock of the prop hitting the log whipped the shaftand unseated the PSS. It is in the right place, with the recommended hose clampbackup to the set screws. The flow of water must have held the seal open for awhile then closed itself or was pushed by the crew checking it out. Has anybodywith a dripless seal had a similar transient situation?Made a tremendous impression on all aboard, boats for miles around, as well asthe US and Canadian Coast Guard. Also stimulated a major rush to purchasebackup bilge pumps, pump handles and secondary radios. I can highly recommend agood audible high water alarm.An incidental finding was that the Canadian Coast Guard sometimes wants to usechannel 65 to work an emergency, and your VHF has to be set on the US settingsbefore you can receive 65. Also very hard to manage a crisis in the cockpitwhen the only radio is below.David David Groves, Lady of Shallot, CS33