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Bertram31.com General Bulletin Board
Re: Here's your sign?
Posted By: Vic Roy In Response To: Re: Here's your sign? (bruce)
Date: Tuesday, 1 February 2005, at 4:54 p.m.
Agree with Bruce. But what usually causes the key to stick out the coupling at the gear is the set screws that hold the coupling on the shaft are loose or not "dimpled" into the shaft, so when you go hard astern, the shaft moves back in the coupling, and the key with it, then when you go forward, the shaft moves back up into the coupling and the key does not go with it. I have backed shafts out of gear couplings a few times, and getting them back in sometimes is as easy as going over the stern and kicking the prop, to as complicated as a full haul out. Solution is to "dimple" the shafts with a drill smaller than the thread diameter of the set screw(just put a dent about 30/1000th in the shaft), grind the tip of the set screw to a point that will fit in the dimple, then wire-wrap the set screws or use high strength Loc Tite to keep them from backing out.
Backed the stb shaft on AJ out of the coupling one time at the camp dock. Key fell in the bilge. Guy that was supposed to have dimpled had not. I went over the stern, kicked the prop while Snow lined the shaft up to the coupleing and got the key started. Hard as I kicked, could only get the shaft to go about 1/2" into the coupling. Time for Coonass Engineering. Wrapped the shaft, key, and coupling with duct tape, cranked the engine, revved it up to about 900 rpm and slammed it into forward gear. Clunk, shaft and key full in. Take the duct tape off, drill and dimple the shafts, install the set screws, wire them tight, and all is well.
More ways to skin a cat than feed it melted butter.
UV
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