I have a rustler with redcat bl system, it's a 3300kv motor and the specs on the esc is that is rated to 18v, so far i had it with 2 maxamps 4400 mah 7.2 packs at 14.4v and got it to 59mph, not bad for nimh i guess, i can't recall the pinion i was using, but i had an 86t spur, i then used a lipo pack (my first lipo) i got from JRH, it's a small 1800mah 3s that i bought for one of my crawlers, and i decided to test it on the rustler, and :shock: i couldn't keep the front wheels on the ground, at any speed:shock:,it felt faster then the nimh, i'll now get a higher kv motor to run with this esc up to the 18v limit and see what speeds i can get , what batt would you guys recommend, i want to get a 3s pack that i can use on my rustler, losi desert truck and my slash also. I have a bunch of nimh packs laying around i just don't want to have to many lipo packs to worry about just now.