undergeared?

[RUSTY XL-5]

Originally Posted by skellyo

At least you've got an idea what might be causing the issue now though. Drop that gearing down and it should cool things down a good bit.

lol, very true. I'll go down to a 15t and if I still have temp issues, I'll either go down to a 14t pinion (smallest I have) or a 86 spur.

[Raze ST Truggy]

I have a stampede with the 5700 combo that I just put togeather the other day. It's got a 90T spur and a 14T pinion and stock talons (I think thats what they are) for tires. I'm only running 2S right now, but the temps are great. 105 motor, 95 MM, and 90 on the 2S 4000mAh maxamps pack.

I think you should try the 86 spur and see what you get for temps.

-Brian

[RUSTY XL-5]

Yal were right...over geared lol (I figured so too). I went up to a 86 spur (too lazy to change the pinion lol) and noticed a dramatic decrease in temps.

Before on 17/83 gearing after 30 mins of hard bashing:

motor was 150-160
mm esc was 180 ish


Now on 17/86 gearing afer 30 mins of hard bashing:

motor was upper 120's and lower 130's
mm esc was upper 140's and lower 150's

Much better. Thanks for the help.

[RUSTY XL-5]

Forgot to mention what I found ironic. I havn't changed my gearing really at all over the last 2-3 years. All gearing set ups provided good speed while temps were in check.

on a brushed motor on 6s nimh gearing was 15-16/86
mm 5700 on 2s lipo 17/86
and now medusa motor and 3s lipo 17/86


Interesting lol.