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Adjusting your stuffing box, checking the shaft coupling, checking seacocks, seawater hoses and clamps, locating bilge pump discharges properly, choosing bilge pumps, and coping with various types of leaks.
[SailNet, 22 March 2002]
How to tell if your cutlass bearing needs replacing, with step-by-step instructions. 2 pages with photos.
[Cruising World, April 2000]
A propeller shaft stuffing box that is throwing water around an engine room can cost you big, and fast. The author tells you how to take that ounce of prevention.
[Dockside Reports]
Well-illustrated account of replacing the cutlass bearing on an elderly full-keel sloop.
[Fantasia 35 Owners, USA]
Brief grab bag of facts and commentary on inspecting and maintaining your drive shaft, and its various supports. Contains excerpts from hard-to-find bulletin board and newsgroup postings, as well as links to useful sites and vendor pages.
[Bill Dietrich, USA]
Walter couplings grip the entire diameter of the shaft and compensate for small size variations in propeller shafting, giving an accurate connection between transmission and propeller shaft to reduce vibration.
[The Walter Machine Company, Inc., Jersey City, NJ, USA]
Shaft system from engine to propeller, with oil-lubricated section with aft bearing housing (shaft log) and forward thrust bearing housing. Improves propulsion efficiency and reduces noise.
[Evolution Company, Inc., Rockland, ME, USA]
Dripless drive shaft seal reduces shaft wear and needless bilge pumping. No packing required.
[Spurs Marine Mfg. Inc., Ft. Lauderdale, FL, USA]
Bronze and non-metallic shaft bearings, some with replaceable rubber bearings for use in water that contains suspended sand or other abrasives.
[PYI Inc., Lynnwood, WA, USA]
Aquadrive takes the propulsion force off the engine by placing a thrust-bearing joint in the drive shaft. This permits looser engine mounts. Both changes reduce vibration and propulsion noise and avoid shaft alignment problems.
[Aquadrive, Atlantic Highlands, NJ, USA]
Electrolysis, Grounding and Corrosion
The most common cause of vibration is engine/shaft/strut misalignment, followed by engine mount and strut problems.
David Pascoe
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