Originally Posted by cathulu
I suspect your heat sink mount is fine, the mosfet has a low Rds so the i^2r losses are lower than the stock regulator... Your anecdotal observations support that. Joel did not make a distinction between the two.
This is a very interesting thread along with all the others on the stator issue.
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Yeppers...... What will be interesting is the temperature before and after the Aluminum bracket.... My gut feeling is that this mosfet R/R unit runs so cool to start with... It does not need the frame cooling.... I was stumpted as of how hot the stock R/R runs.... Really hot...