Can anyone tell me why the crank big end regrind specifies a 0.090 radius and is labelled "Important." I have always wondered
- Thread starter DennisMo
- Start date
Is this something particular to these cranks or is this a common practice in crank regrinding?
- Joined
- May 7, 2005
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- 7,735
Specified to eliminate/reduce stress riser that would propagate a crack. Its important to mention to the re grinder as its specific to these cranks and their grinding wheel will need a custom dressing to put the radius on. It eats into the life of the wheel so some will not be keen to do the full radius.
- Joined
- Oct 28, 2009
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- 1,489
This importance of this has come up a number of times in the past.
Has anybody taken a Norton engine to a machine shop and been told they won't or can't grind it as requested?
Or even worse got the engine back with no radius as requested?
Has anybody taken a Norton engine to a machine shop and been told they won't or can't grind it as requested?
Or even worse got the engine back with no radius as requested?
- Joined
- May 31, 2012
- Messages
- 1,514
Couldnt agree more. A local shop had my crank for over a month before returning it, telling me they cant do it. Mile High turned it around in 2 weeks and did it right.
