Quote:
Originally Posted by azjc
if you want to go with a 1521 I would go with the 1.5d instead of the 1d...kv of the 1.5d is around 2000 and that would be plenty on 4s especially with the increased torque over the 1515 can
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I agree 100%. The lower KV will help with the amp draw, thus saving some of your runtime (but you probably already know that).