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I am totally puzzled for two reasons;
1. I have been the owner of many of the millions of boats with the prop shaft hard connected to the motor. 0.0005 per inch of coupling face is the standard alignment spec. This is the same spec for aligning electric motors in industrial applications. Lovejoy and other couplings are for low hp applications and to minimize shock load. You line up a LoveJoy exactly the same way, before installing the rubber cross.
2. This is an OUTBOARD MOTOR the fellow is connecting to so what does the flex of the hull have to do with the coupling?
--- In electricboats@
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> Myles, The "guarantee" is the splendid bit of engineering you do that calculated the shear values. The fellow wanted to avoid welding and machining, which is why I came up with this solution.
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> When I said "buy a coupler" I meant one of the many types that allow movement and misalignment like a Lovejoy connector. Prop shafts should never be hard connected to motors, especially in boats because the boat itself can flex, causing excessive force on the motor bearings.
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