G2R Setup questions

[jhautz]

DJ,

I'm running a 540C 9L, 9920, 4s lipo and weighing in around 10.7lbs in an emaxx. I was running the same gearing as you. 16/66. If your running the stock revo diffs and emaxx tranny your gear ratio should be identical to mine.

I was having all kinds of problems with heat and such like you with both the motor and the esc when I first set it up. What I wound up doing was going to 26/66 and run locked in first gear. (I still have the 2 speed tranny) This about the equivalent to 15/66 in 2nd gear. I put a small fan on both the motor and esc and now it runs almost perfect temps. Cant really push either one over 120-130, and the bats barely get warm. It has really nice speed and power for only a 9L

(http://cgi.ebay.com/Small-Cooling-Fa...QQcmdZViewItem this is the fans I used)


Side note:
Cool thing about this setup is I am set for all around bashing in 1st gear, but then when I want to play around I can pop out the occasional speed run by just flipping to 2nd gear. No gearing set up hassles. It gets pretty hot in only 1 or 2 passes geared like that, and in 2nd gear, but its not meant for constant running. a pass or 2.... cool down. With that gearing I wouldn't recommend starting from a stop. get up to speed in first then shift to 2nd. Cant say that I can verify it (no radar or gps) but its gotta be toping 50 easy. Calculations say 57mph. pretty uncontrollable at top speed.

Thanks for the info.....My truck is locked in second gear permanetley....via the gorrilamaxx single speed tranny conversion.....
Its seems I have found about the right gearing at 66/20...
The motor temp hovers at 150 and the esc about 140.....This is the happiest medium I could find with what gearing options I have....
So in order shunt the heat form my esc and motor I have mounted an 80mm fan...yes I said 80mm.....
It does some wicked cooling and now my motor and esc don't go above 115 degrees......
The fans rpm is adjustable from 1500 to 4000 via a pot that i have connected......
The current draw at max rpm is .7 amp
The current draw at minimum rpm is ,23 amp
This i really like beacause on the hot days like today when its 90 degrees outside I can just turn the sucker up and have no worries.....
I will post a pic when I can get my camera working again..you guys might like this...

thanks

SkI

[HotnCold]

I would like to see a pic of the adjustable fan - sounds like the ticket...