KV / Gearing choices

[glassdoctor]

I don't have the answer either, but I can say I no longer believe you need to hit a certain rpm range, like 40-50K to have a setup work well.

I used to think this allowed the motor to "stretch it's legs"....

But after running setups that peak in the mid 20k's and gearing even higher than a nitro, I think it may not matter much which route you take. Now I can't say this is ideal for happpy esc and motor temps, but it runs fine and feels good.

I would like to see how motor temps would be if I bumped up the rpm and geared down to match... I think it might be a little better.

Mike and I both ran 1515's in trucks and were geared for the same speeds. He ran the 2200kv and I ran the 1700kv. He had lower temps on the motor than I did. My temps were not bad, but they got higher than the 140's Mike saw. I don't know if track conditions/driving style etc were a factor, but the edge goes to his setup from what I can tell.

Mike's motor would have been peaked about 31,000rpm and mine at 24,000rpm... again, both geared for 30-32mph.