how do revo 3.3s hold up to brushless power

[fastbaja5b]

yeah mbx1275 has my old Revo which I fully rebuilt just before he got it. The transmission has a wide ratio gear set and was geared 16/36 so on 4s123 with the 2100kv Losi you'd expect perhaps 53.28kph. If you went to 5s Lipo with the same set up it'd be closer to 74kph but I'd watch temps, on 5s Lipo I'd gear perhaps 15/40 with the same wide ratio set for 67kph.

If you retain the tekno clutch and slipper, you should have very little (if any) drivetrain problems. Never had any issues myself, even when I ran Baja tyres on it :D