Re: OK, next question. What is type of metal?

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Posted by Matt Wilson on Friday, January 19, 2001 at 9:13PM :

In Reply to: Re: OK, next question. What is type of metal? posted by Doug Higgins on Friday, January 19, 2001 at 8:04PM :

I don't know what type of metal the crankshaft is. The Army technical manual TM 9-1840A (engine & clutch manual) just says that crankshaft is drop-forged high-carbon steel. This doesn't help much.

As for RC hardness, I don't know what the best hardness would be. Most automotive gears (used in tranny's, rearends) and roller type bearings are typically in the range of RC 55 - 65. I don't know if this would be appropriate for a crankshaft, though. It might be too hard.


Matt


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