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Old 11-19-2004, 02:26 PM   #1
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Default Just curious, what is the difference between .12 & .15 RTR motors?

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?
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Old 11-19-2004, 02:38 PM   #2
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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.
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Old 11-19-2004, 02:53 PM   #3
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Good....I would feel bad if a RTR kit was walking me on the straights.......
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Old 11-21-2004, 10:05 AM   #4
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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.
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