Quote:
Originally Posted by glassdoctor
I've never done this and it's not my idea... but I think you can use a slave motor to spin the rotor (XLT) and measure the voltage across a coil, to somehow figure the kv.
Also, I read you can measure the rpm while it's running using a scope. (or use an actual tachometer) With the voltage into the motor and the rpm measurement, you can calc the kv.
If you can figure the kv.. that would tell you what it is.
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The first method you listed will work using any of the 10th scale/540 motor dyno's. The problem is finding one with or producing a coupler with 5mm shaft capability on one side. I never did either but came up with a better solution. Sold the XLT4(with disclaimer) on e-bay and forked out the coin for Neu 1515/1y; Problem solved!