Bryce808

I run tekin rx8, t8 1900kv motor, 4s battery and my gearing is 17/46. after about 11 minutes of running its so hot i cant even hold my finger on it for a second. i put a 15t pinion on and it still got to about the same temp, whats the problem? THANKS GUYS!

EskimoGangsta

iTrader: (1)

I wont be to much help. but i also run the 1900 but i'm geared 14/46 with no real complaints of top end. 15/46 i would say would be a good ratio for most tracks.. i come off a 10min main usually like 130-140 range.


*EDIT*
With mugen Mbx6

Randy_Pike

iTrader: (6)

With what car? on what size track?

IOP_Racer

iTrader: (14)

Are you bashing or racing? What buggy? I have a 1700 running very similar pinion/spur to you. I can run for 25 mins plus and my motor comes off at 135. That is track driving though.

Bryce808

the tracks i ran at are pretty big, + on the straight away other e buggys are usually a few couple mph faster than me but i dont want to gear up 1 because of my temp issue

Bryce808

its a associated rc8.2e

[email protected]

Go up to a 19-20T pinion.

Bryce808

But wont that add more heat?

[email protected]

No, you're geared too low for that car so your motor is basically running max RPM more often then it should. Brushless can run hot if undergeared as well, they need a load.

Bryce808

Thank you soooooo much! i dont know why i didnt ask this question a long time ago! i really appreciate it!

[email protected]

No problem. It's common to want to gear down when your motor is running hot, but sometimes that can make it worse. I would bet you were topping out early on the straight, you mentioned some other cars were faster. Now you should be on par.

thecman26

iTrader: (109)

+1, What Ty said.

I used to run a 1900 in my D8 and with a 19 or 20t pinion it would be lucky to get up to 140.. Still had TONS of rip, maybe a little too much but the higher pinion would tame the bottom end down a bit, a very good thing!

Bryce808

I tried it with a 19 and 20t pinion. After 11 minutes of running the temps weren't as high but after about 16 minutes of running it was around the same as 11 minutes with a 17t pinion. Would I be ok to keep running pack after pack? Also what's a good cheap temp checker

K. Wood

iTrader: (2)

I am running a 1900 in Mugen ECO. With 14/46 gears. On a med. sizedl indoor track it is running around 160 to 170 deg. Should I gear up or down?

[email protected]

How hot are we talking?

That's about right for indoor. You could bump up a tooth if you feel you need it.