Castle 2200 on 4s or 6s

So it seems the general concensus is that 4s is gonna be the best option for everyday driving.Geared for around 45 you should be able to run this thing all day.

No worries, anything equal or less than 165 degrees has no negative affect on the motors.

So what would be the sweet spot for temps?I know that as they warm up there efficiency seems to increase,till you hit the point that temps start to hurt performance,what point is that? My hypothesis is around 140.

[tc3_racer_001]

my 1512 2d on 4s in a buggy gets easily up to 150, most of the time its a 150-165 after 6 minutes of racing... any suggestions? gear up or down? im geared pretty low and its a large track, but im barely at full throttle ant the end of the straight... what concerns me, is, its a track which requires constant thottle, around 1/4. this is what is heating it up, the rest is tiny blips before and during jumps and down the straight. kinda the wrong place but o well. its written now!

ambient was anything from 30C to 35 in the shade... in the sun it was 50+C!!!