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Old 06-07-2017, 08:48 AM   #1
Art Newland
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Default Re: Model A Engine Builder
Download this PDF, lots of good info for folks in the PWN.
http://www.volcanoas.net/uploads/3/4...parts_tips.pdf
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Old 06-07-2017, 11:43 AM   #2
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Thanks to you all! Onward!
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Old 06-07-2017, 02:36 PM   #3
Chuck Sea/Tac
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Originally Posted by Art Newland View Post
Download this PDF, lots of good info for folks in the PWN.
http://www.volcanoas.net/uploads/3/4...parts_tips.pdf
Just because a crank broke with .040" under grind, doesn't necessarily condemn.040". Cranks break at all grinds. Other than fatigue, I'd blame a bad radius. I just saying.
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Old 06-07-2017, 05:54 PM   #4
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Originally Posted by Chuck Sea/Tac View Post
Just because a crank broke with .040" under grind, doesn't necessarily condemn.040". Cranks break at all grinds. Other than fatigue, I'd blame a bad radius. I just saying.
Sure, a bad radius is fatal to a crankshaft. So is too much lugging/improper use of the timing lever. 0.04" under size journals is the limit but not unreasonable.
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Old 06-07-2017, 10:07 PM   #5
Kohnke Rebabbitting
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Default Re: Model A Engine Builder
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Originally Posted by Chuck Sea/Tac View Post
Just because a crank broke with .040" under grind, doesn't necessarily condemn.040". Cranks break at all grinds. Other than fatigue, I'd blame a bad radius. I just saying.


Agree !
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