mm + 4600 motor temp near 200 with rustler

Is there a motor heat sink without a fan that is going to fit with the rustler transmission... and actually work to bring the temps down?

Wow, surprised nobody recommended the fastlane transmission case. It's not a heatsink, but it is solid aluminum that will dissipate heat, and open up the motor area to let it breathe. Only problem with that is it leaves your motor out in the open and prone to getting beat up on unless you get yourself a swami bar or like what I did before my swami bar arrived. I got an rc-monster motor heatsink which is aluminum finned and looks cool as all hell, until you use it as a motor guard. BTW try disabling your punch control if you can stand it, and put your start power to high. See if your temps come down after a pack or two.

[DwightSchrute]

Originally Posted by 1maxdude

Is there a motor heat sink without a fan that is going to fit with the rustler transmission... and actually work to bring the temps down?

unfortunately, the way the rustler is designed, the rear shock tower really blocks any airflow over the motor to help with cooling.

some people use this one, but i saw no benefit...

http://www3.towerhobbies.com/cgi-bin...?&I=LXRJP1&P=7

i had to resort to a motor fan, but that's not a popular choice when you're running offroad.

Originally Posted by 1maxdude

try disabling your punch control if you can stand it, and put your start power to high. See if your temps come down after a pack or two.

I would think both of these would run more amps to the motor why should it bring down the temps?

Today I tried a few different gears at the track to see which one would get to 200 the quickest. All testing done with 90t spur and motor starting temp was 130 after my warmup laps.

19t - got to 195 within about 10 minutes. Seemed easier to pull the wheels up on the straight away when not really trying. Plenty of acceleration and speed. esc got to 145

16t - took a bit longer, but still got close to 200 in under 15 minutes. Still plenty fast for the track, feels perfect. This gearing gets me about 40 mph on the street. esc at 130+

13t - didn't get above 180 after 10 minutes then I called it a day. Fast enough but yet slow enough for easy control on the straight. The 16t and 19t are just enough speed to make it a bit difficult for full throttle. esc at 130 or less

I like the aluminum transmission option so maybe will try to get a deal on one of those. Today I got the vxl motor and installed the 19t so it should be just a tad faster than the 4600.

3500 * 9.9 * 19 = 658350 teeth per minute
4600 * 9.9 * 13 = 592020 teeth per minute

I hope the temps stay down so I don't need to spend $40 on an aluminum transmission case.