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03.25.2010, 04:07 PM
1st one is also a feigao, just a finned can version.
The kv on the second one should be on that label- check under the heatsink clamp, but it may not have been filled in.
You'd need some sort of tachometer to check the rpms on any given voltage, then do a bit of mathe to workout the rpms per volt = kv rating. Im so old I cant remember the sum myself... :/
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