Re: 1950 Martin 60 Crankshaft Top Thread Broke

[Tom]

For what my opinion is worth, I would look for a replacement crank or a complete replacement block. Replacement parts shouldn’t be too hard to find, or too expensive using our on-line ads. Consider that if the crank was broken like that, someone relatively inexperienced has been working on the motor. You don’t know what other repairs are lurking. And I wouldn’t trust retaining the flywheel to the bolt that goes in that hole.

Unless the machinist is a very close friend or an employee of yours, the cost of fixing that crank correctly, I bet, would be three or four times the cost of a replacement crank.

Tom