High kv low gearing VS Low kv high gearing

[Patrick]

I've run the 1515 2.5d (1650kv) and the 1515 1y (2200kv) on 6s geared for 50mph or slightly over in my truggy. And although I never ran them back to back and it's been a while since I used the 2.5d, I remember it did run a bit cooler than the 1y. Over all I think I preferred the 2.5d setup geared for that speed (not a big difference though), but haven't really done enough thorough testing to say for sure.