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Old 06-29-2008, 07:48 AM   #1
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Default Rotor sizes?!?!

Hi guys,
Have looked around for a while but can not find any info on this topic, I need to know what differnt dia. rotors do! I have 2 differnt sized rotors a 13mm and a 13.5mm and I need runtime from my car, which rotor would be best for this? What will each rotor do? Any help would be greatly appriciated!

Thanks guys,
Rhys Marshall.
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Old 06-29-2008, 03:17 PM   #2
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A larger rotor increases torque, and reduce peak rpm's.

A smaller rotor decreases torque, but increases peak rpm's.
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Old 06-29-2008, 03:45 PM   #3
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the 13.5 rotor will be more efficient. The 13 will feel smoother and will have more rpm.

Hope this help !
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Old 06-29-2008, 10:44 PM   #4
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Going to a larger diameter gives you more bottom, but less mid and top
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Old 06-30-2008, 01:46 AM   #5
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Different rotor diameters changes the feel and characteristics of the motor and while they will have some influence on runtime the biggest factor would what winding motor you are using and the gearing you run.
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Old 06-30-2008, 04:18 AM   #6
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Smaller rotor will improve runtime... But needs to be geared a little less too due to the reduced torque. More notable will be the increase in drivability.
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