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Old 06-22-2010, 10:49 AM
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how far can u turn down a eagle crank

a friend of mine gave me a eagle crank that came out of his 555. it has spun bearing on it. i was wondering how far i could have it trun b4 it became un safe to use.

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Old 06-22-2010, 12:34 PM
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the strength loss by grinding is minimal 'IF' the proper radius is maintained. There will be a loss of hardness but that is not an issue for most applications.
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Old 06-22-2010, 07:09 PM
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ok thank u
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Old 06-22-2010, 08:15 PM
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It is common to turn these BBC cranks to small block size rod journals. Bearings for small block rods are available to .060 undersize. Big block mains are good to .040 undersize..
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