that doesnt say or prove a thing.
how have you been driving? straight lines or?

when I do straight lines on a flat surface with high traction, my motor stays cooler then when i run on a clay/dirt track and I have to give gas and hit the brakes all the time.

So I just got my ft kit. I have heard of people having to shim something in the diff. Which diff needs shimming, and what exactly needs to be shimmed?

no need for any extra shims inside diff , just make sure to use 8mm external limiter on the shocks

10 tooth or smaller is for a rock crawler....11 is pretty close to that...
but yet he's probably running the 32 pitch gears too, which is ideal for those big 550 size motors.

Vito,
What temps were you hitting with the 12?
I run a 13, but thats on a track. There will probably be less load on the street and more air flowing over the motor so you may get away with a 14. But I think 14 will be as far as you should go with a 4.5 turn motor for pure street driving.

When you said that it was running cool, was that after 10+ minutes of driving? Maybe even driving it until you get to the esc voltage cut off?

I know you said that you don't drive it for the entire battery pack, but you want to gear with the assumption that you will. Maybe after driving with a 15t pinion for 5 minutes you are getting to 160°, thats good... but what if one day you are really having fun and drive for 10+ minutes with the 15 and get your temps to 210 and fry your motor?

Gear it to the max acceptable temp at the maximum run time your battery wll give you.

100 to a 110 temp after 6 min wide opend in the street

Coyote, you still offering this? I may be in for the diff's sans gears.

Thats crazy low, you probably can get away with a 15t.
Just make sure you are testing the temps throughout and all the way to the end of a full battery.

You dont want to surprise yourself with a temp thats way too high if you drive more than your 6 minutes or whatever is your norm.

IE: I hit about 150 to160 depending on day or night in a 7 minute main.
During practice when I drive over 10 minutes and completely drain the lipo I can reach 170.
You dont want to gear to a 160 temp after 5 or 6 min because you could be way over 160 after 10 minutes.
Rc is a time warp, I know all of us have told someone (wife) that they will be leaving the track in a half hour and that person calls you two hours later asking where you are.

The trick to not making your clubs crash video this week is not to crash. I ran my old orange and white body last weekend. Some great SC crashes though. I had to share with you guys.

+ YouTube Video

Where are you temping your motor at? The back side?

Here you go cam:

+ YouTube Video

I love the flappy black and green truck

Here is a hot lap of me running the camera body on my truck. Go Pro mounted on top made it a little tipsy in the corners but still a fun lap to watch.

+ YouTube Video

in the middle of the can

Temp the back side of the can, towards the rear tires. Left to right and take the highest number you see.
You will see higher temps on the back side because air flow is not hitting it, go by that number not the top of the can.