I did the brushless conversion on my E revo, used the Mamba Combo with the 2200Kv motor with an 18T pinion and the stock spur, 64?. The truck is quick, but not even close to what I expected. No wheels stands, tho it has pulled the rubber off the rims a few times, so I know it is faster than stock. All I see are the insane speeds everyone braggs about on these posts.
I am using new 7 cell NiMh, 4600mhr batteries until I can convince myself to invest in LiPo. But, they should be faster than the LiPo anyway, based on voltage, at least for the first part of the run.
I have not seen or felt any issues with a hot motor, ESC or gear train.
Any Ideas? I may have to break down and take it to the LHS and have someone under the age of 25 look at it :-)