KV / Gearing choices

[glassdoctor]

Originally Posted by starscream

This question seems to be more complex than just kv differences however,
You gave a real world example of a neu 1515 2200kv and a neu 1515 1700kv on 4S. In this example the 1700kv motor ran hotter correct? So, the question remains, which one (the 2200kv or 1700kv) has a longer run time at 4S? This would tell us which is more efficient at that voltage. I was also curious if the heat/run time ratio changes given a higher voltage (geared for the same speed). Hence the next question, is there a sweet spot in the RPM band for a BL motor? if so, what is it based on kv, voltage, both etc?...

correct, although this is only a rough comparison because it was from two different people in different trucks 1000 miles apart on different tracks, etc etc....

but it's all I got right now.... :)

We definitely have more questions than answers don't we? :032: