elokens

What is the difference between .12 & .15 RTR motors? Every RTR seems to come with a .15 size....how does this compare to the performance of a good .12 motor?

Nrctc3

iTrader: (2)

RTR engines are just that, something to get your car/truck running. A good Italian .12 engine will easily overpower any RTR .15 or maybe .21 engine.

elokens

Good....I would feel bad if a RTR kit was walking me on the straights.......

rushdude

iTrader: (2)

RTR cars come with .15 engines because they are cheaper to produce and put out and ok power output. A good .12 engine will have more rpm's which mean more speed. A good .15 will have a lot of torque. RTR .15's don't have a lot of torque though only and aftermarket .15 will. The only RTR .15 that has good power output that I can think of off the top of my head is the traxxas TRX .15 or something like that. That engine is in the nitro rustler and that does around 50mph.