KV and runtimes

[_paralyzed_]

if you must run that large of a motor on an MM you are close to or at its limit. the 1600 will tax your MM the least, and go slow as possible on gearing.(30 is an acceptable top speed on a tight track) Also, getting that now will allow you to run 6s when you upgrade to an MMM.

btw: for a four cell pack we say, "4s" not "4c'. It stands for four cells in Series, s for series