pinion and lipo

[pablokillla18]

hey guys can i run a 7.4 2c 5000mah lipo with the stock pinion? without ruining the esc and motor

[samintrepid]

With 2S lipo and stock pinion (11 tooth) you can go 30 mph without heating problem (120F) but if you put the 17 tooth optional gear your motor heat more (150F+)

2S lipo with stock gear
http://www.youtube.com/watch?v=S8wH5ETkaEk

[pablokillla18]

isn't 30mph a little bit slow for lipo power? with the stock batt it says it can go 35 out of the box

[samintrepid]

If you want more speed 40mph+ put the 17 tooth and watch the temps.

[pablokillla18]

what if i put a lower pinion like 15 etc? ill just probably leave it with the stock gearing

[pavmentsurfer]

Traxxas always lists top speeds with the larger pinion but this setup can typically only be run on smooth pavement or heat will be come an issue. On 2S you probably can do 35... but not constantly.

[pablokillla18]

alright thanks

[jackjohnson]

What about a 3s 20c 5400mah on the stock gearing?

[Grand National]

What about a 3s 20c 5400mah on the stock gearing?

I run 3s 20c 5000 mAh with no problems. Although i've never had my temp gauge out there, I can tell you it's fine because after a run, generally, it isn't hot to touch.

[jackjohnson]

That's kind of what I thought but I just wanted to be sure. Thanks! (I would test it myself but I never got through a full run. My esc decided to take a smoke break as so many others have, and now it's on its way back to Traxxas.)

[pablokillla18]

does a motor heatsink with fan help keep temps down?

[Grand National]

Yes sir, I have one on my Slash PE that I race, and I can continuously do heat after heat without the motor warming up. I highly recommend them.

[pablokillla18]

sweet got one on my esc and on the motor

[tackett834]

any brand that you would recommend as far as motor heatsink with fan?

[pablokillla18]

i used this one http://cgi.ebay.com/Integy-T8074BL-Motor-Heat-Sink-w-Fan-Blue-Slash-4x4-/290518611692?pt=Radio_Control_Parts_Accessories&hash=item43a44236ec