KV / Gearing choices

[Finnster]

I've been wondering about this issue as well, and sometimes I'm wondering if sometimes we tie ourselves in logical knots over it.

While I can't attest to the larger motors, I did quite a bit of testing with my Novaks in my Rustler and vs the sensorless. Let me just comment on the Novaks.

All the GTB systems run on 6 cells (and I even ran it on 7) and in the same car & controller, so the comparisons were direct as possible.

The lower turn motors were always faster. There is no way to gear a 8.5 (lower kv) to go faster than a 5.5, after a certain amount the motor is overgeared and goes no faster (or even slower) and just gets hot. :)

Also, a 8.5 on 7 cells is faster/same than a 5.5 on 6. But on 7 the 5.5 is clearly faster. Same on 6 cells.

It seems to me, as long as you are running a motor with a broad eff range, you are better off getting a lower turn motor and gearing properly than overloading a low-turn motor. Now, how low can you go w/o overheating is always the trick.

Almost seems like the diff between a high tq deisel engine vs a high rev, low TQ formula 1 engine.