Reply To: 1956 12 hp Sea King prop issue

[frankr]

Typically, a spun hub will hold at low speed, but slip smoothly under power, like spinning your wheels on snow or mud. Clutch dogs and/or coming out of gear are more harsh, like in-or-out or banging.

You could have tested the prop hub before sending it off. Make a mark on the prop nut (or use the cotter pin as a mark). Make a second mark on the prop, aligned with the first mark. Run the motor till suspected slippage occurs. Then stop the motor and check the marks. If they no longer align, it slipped.