1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S
After about 10min of runtime its round 60-70deg/C.I have timing on think 5deg and punch control also very low.Lipo's and ESC run round 40-50deg/c..Happy with that but motor is hot!
Just want to see what the other guy's is running setting wise just to compare?
Do the motor temps stabilize at 60-70C? This is a safe motor temp(70C = 158F), but the lipo is getting to be a bit warm at 50C(122F). If this is after 20+ minutes on longish grass as you mentioned initially, then I wouldn't worry about it.
Lipo temps may indicate your gearing is a bit too much for them. I have not heard of EP brand lipos, but you may be pulling them a bit hard. The esc is staying cool due to good design and the fan. Your motor temps are a bit high, but you are running a buggy motor in a truggy. I would gear down 1 tooth and see if anything imroves.
Long grass is not the best thing to run in either, try your setup on dirt or the street and see if temps are any different. You may see a 10deg f difference or more just from getting out of the grass.
Sounds like your system is very close to being just right. I would experiment a bit more. I would not put a larger pinion on though, I can imagine that will just make things worse. 13t pinion would match the factory clutch bell/gearing, and that is generally a good place to start. 1 tooth can make a big difference.