Which Rockwell scale? I checked my old shaft today on a 15-N tester (all
that I have available at work) and it measured 92. Using the conversion
chart, that would be equivalent to 65 on the more common Rockwell C scale.
My transmission has seen some work at some point - the front layshaft
bearing is the style that includes the outer race while the rear bearing
ran directly on the inner surface of the layshaft.
Thanks,
Mike
TS11544L
fogbro1@comcast.net wrote:
> List,
>
>
>
> FWIW, the original layshaft for the all synchro boxes had a hardness of 92
>Rockwell. With the exception of TRF's, all of the replacement shafts I had
>tested several years ago fell far short of the design spec. Don't know what's
>being supplied by others today, but TRF's are still made to that spec and in
>the USA!
>
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