Westsail Owners Alliance - Thread: "Shaft Security"
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Thread: "Shaft Security"

12,268 posts on 2,444 threads   •   From Mar 07, 2004 - Jan 08, 2012


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Shaft Security

Colleen Crystal

Bud - I've been working on the engine for a few days. Finally got it running well today, and then almost had a heart attack when the propeller shaft pulled out of the coupling, the key went flying and only the rudder stopped the prop and shaft from sliding further out of the boat. Guess the bolt securing the shaft at the coupling had loosened up over the past year. What is the best way to have a backup way to stop the prop shaft sliding out? Is there some sort of security collar? This easily could have happened underway, and I'd like a backup. Tightened the bolt back down, there is a little hole through the top of the bolt itself, but I can't see how to secure it from turning itself loose either?

Rich Morpurgo

that hole is for wire to keep it from backing out. I would also put a hose clamp on the shaft about 1/2 inch away from the stuffing box. This will keep the shaft on, but wiring the coupling bolts is important.

Bud can shed more light I am sure.

Bud Taplin

The setscrew HAS to have lockwire around it. OR ELSE. You can also install a zinc collar just ahead of the stuffing box to prevent the shaft from sliding back.

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