the new hv 4.5

[Serum]

Yeah, i think that they would be rappid fast on a good 4S lipo! if they solved their thermal problems, it should be a nice setup.

My emaxx takes 14-1500 watts getting to topspeed, that's with the 7XL on 5S lipo's. I remember seeing the hvmaxx movie of harald-hans on 4S. it jumped from it's place. it was very agile. that was with the old HV-maxx. 35-38 mph with no thermalling and long runtime is more than enough for on the track.

Plus this HV motor is relative light.