Lehner 1950 or 2230 with 5\6s and an MGM Compro 16024?

[jhautz]

I agree w/ CHC. You need to gear up a bit. If your motor is hot and you esc isn't you arent loading the motor enough and its not running as efficient as it could. Find the ''sweet spot'' and it'll run cooler. (and it will get you that extra speed you are looking for)

[Purplefade]

VERY COOL!! Looks like I'll be adding that extra "s" and potentially going back to maybe as high as an 18 tooth pinion :) :) Guess I'll find out, lol, worst case, using the 5s should bump up the effiency just a bit and, maybe, make me good to go with the current 16t. Yep, definitly looks like I have some testing to get done!! Can't wait to get the controller, also going to get one of jhautz s quark syncs from Mike and have my self all hooked up!!

[Finnster]

Sounds like the upgrades should be really fun and will smoke your nitro buddies :)

One thing tho I wouldn't do is put a heatsink and fan if you get the 1950. If you've ever played with mounting heatsinks on a CPU, you will find that the HSFs need a ton of spring force onto the CPU to work properly. Its about 25 lbs for a 0.5" sq cpu.

Even then, if you don't do a good job with the thermal compound that goes between the HSF and CPU, you will still get poor heat conductance, and potentially create an insulator trapping heat. I can't see any reasonable way you could make an easy motor HS that would be better than just leaving it be. Also, a 25mm fan will not move much air and would be lost in such a big motor.

The HS for the Q125 is a bit diff as you are adding onto the existing undersized HS (vs say direct mount onto the FETs) and the heat output per area of the case isn't as great as a CPU, so the tolerances are more forgiving.

any reason you didn't want to put 6s on the 9920?