Kraton Leopard 4092 dialed in

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That motor draws less current than the stock motor and will spin at a slower rpm. It will be better for longer run times, less heat and plenty of torque and speed. You just have to gear it up a little to get your desired speed yet stay in a good heat range. . The longer internal moving parts makes more torque. Plus you will be running it with 6 volts more than likely. The ESC hates current but loves voltage, as long as it's not more than 6S.
Great!! Thanks for the response, just got into rc and people like you make it a lot easier to make educated decisions.
 
View attachment 6184 Think I got the Leo just right. 18 tooth pinion, yeah racing duel cooling fans. No GPS run yet, but based on other GPS runs, I'm guessing 65mph and it gets there quick. After a full 5s pack, motor temp at 141, battery at 89, ESC at 122.

I know this is a old post, but how were you able to clamp the Yeah Racing heat sink down? I have the same fans/heat sinks as well as a Leopard 4092, but the fans are for 40.8 and the Leo is 40 diameter.
 
Fairly satisfied with my dual fan setup! These fans are serious business.

1480kv Leopard on a 17t. Ambient temp 85˚. Ran 1/2 a 6S pack and was 160˚ at the hottest point on the motor. I may go back down to a 16t or just use the fan stands to get some distance off the motor so more heat can escape.
 

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Hey guys, so what's the max temp on a battery pack? After a full run I was up to 125˚ on the pack!
That's about where my SMC 2S packs get after a hard run in my outcast. 120-125F.

If you google it, seems 125F is about as high as you want to go withing degrading the life of the pack too bad.

Operating Temperature
Charge: 32 to 113 degrees F
Discharge: 32 to 140 degrees F

A lot of testing / reasearch by another major LiPoly in RC applications vendow indicated that charging when battery is below 50F sharged should be limited to 4.1V per cell and that temperatures above 125F have a rather major impact on life cycles.
https://www.rcgroups.com/forums/showthread.php?1852482-Safe-operating-temperature-for-Lipos

Then again, that was 5 years ago. Maybe the lipo's are tougher now. :)
 
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