Heat problems with Mambamax/stampede

[hyperasus]

LOL yes I was mostly kidding. Really I just want a motor that wont run hot. My 1920s do pretty good but aren't really majical like I thought they would be. I think a 1930 would really hit the spot, but Mike doesnt have any 1930's with 1/8" shaft.

A Feigao 380C 6L seems a bit fast at 4899kv. I'm pretty sure that would run quite hot with how hard and long I drive my trucks.

[captain harlock]

Could you tell me how many turns each 1920 of your's has?

[hyperasus]

One 6 turn and one 7 turn. Both of them have been re soldered so the are running 10 turn and 12 turn. I am run both 2s lipo and 7cell IB 4200WCE packs. 3c lipo is out of the question, just too fast and hot with 3c lipo.

[sleebus.jones]

I ran your numbers through my gear calc, just for giggles. Your roll-out for your setup (assuming 5.75" tires) is 0.96. Not incredibly high, but higher than I run. On my setup, my rollout is 0.83. It'll get warm, but not like you're talking. I think running up ~ 0.90 is starting to stress the motor. A 12T pinion will help you, that puts you at 0.88 but a 11T is really what you want. That puts you at 0.81. I realize that combo probably isn't availible or possible on your setup, and you'd have to run a 3S to get some speed out of it, but that would set it up to behave properly. :) Speed for that setup would put it ~ 43 MPH.

Sleeb

[hyperasus]

Found this pinion here.

http://www2.towerhobbies.com/cgi-bin...&I=LXEX10&P=ML

I'll order that and sink it up with a 90t spur.