Ball bearings on plain

George Dawson george at
Thu May 22 16:51:19 BST 2008

Ah, an explanation that makes sense.

I'm not a current engineer (or really a current anything!) but I think 
the argument was that gudgeons running on plain bearings are (usually) 
supported much closer to the point of exit from the headstock - probably 
within half an inch or less, whereas the point of support in a ball 
bearing, not always obvious from the outside of the housing, can be an 
inch or even more, increasing the bending moment considerably.



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