FMA LiPos in an E-Maxx

Originally posted by C.H.U.D.
Gearing is definately a huge factor and I don't see what your gearing is set at in this thread.

I'm running 14/64 in 2nd gear (G-Maxx Single Speed).

Your truck looks all aluminum, minus the CF battery plate. W/ the LiPo's installed what are you looking at for weight? I'm guessing 10-11 pounds.

I'm buying a small digital scale any day now, I know the truck is heavy. I have tried to save weight were possible but I know it's heavy. The LiPo saved a LOT.

A Feigao 10L has about 27 less oz-in torque than a Feigao 10XL when pulling 100amps. I think w/ the Kv and torque of the 10L, and the weight of your truck, this may be why you're running hot.

Interesting...The 9L and 10L I've got really move the truck like nothing else on the track, they certainly don't seem to be taxxed at the gearing I run. I just switched to LiPo a few weeks ago and it's been cold on race days (50 degrees) so temping has not really been an issue. I can't tell if the weight saved translates into cooler motor temps. Hopefully it does. I know on some of those 95 degree + days this summer it was a contest to see who wouldn't thermal shut down. I still can't believe I didn't thermal at Madness in August.

My Maxx, ready to race is 10.5 pds, I run 14 cells (gp3300 1.17, matched) w/ 18/64. My 2400XL will run 170 degrees w/o the heatsink, thermal grease, and 80mm fan. W/ the aforementioned stuff I run about 120-130 degrees. I get over 10 minutes+ runtime on a big fast track (http://globalservices.globalhobby.co...c.php?t=15061.). On WOT my truck will just barely pass a 1/8 buggy.

I think w/ a 9XL and proper gearing you'll easy run the 10 minutes w/ more than enough speed and a tough aluminum truck to boot.

All sounds good. Switch to LiPo and your truck will be even lighter and quicker. As this season is over, I'm beginning a winter rebuild but I think when I hit the track next year, I'll be driving an all new E-MT...maybe the G2R or something else...