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Old 06-13-2015, 08:27 AM
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onehundred80
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Default Re: Turning the pulley

Originally Posted by Sweet2002
The SLK grooves are not that deep. I measure .090". Shop plans to make a tool to duplicate the stock groove shape and I left him a belt with the fact it needs to sit flat against the pulley after the machining is complete. the grooves measured at the largest diameter after cutting should not be less than 68mm if cut at .090", 2.25mm's.
I measured the groove depth (.135") on a shadow graph (10:1) and that dimension should be within a thou or so.
To measure the depth accurately you need to do it this way or use a depth micrometer with a point on it, using a scale does not take into account the radius at the bottom of the groove.

Measured with a engineers scale I get roughly .120" depth, the scale is .040 thick.
I did measure the whole groove profile but my filing system weaknesses allowed me to lose the paper with the sizes on it.

The SLK uses the same pulley I am sure so that is a bit strange.