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Old 02-02-2008, 02:11 AM   #1
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Default brushless: Rotor sizes~torque

hey all


i got a Q

does a larger diameter rotor make more torque or more RPM

like say a 4.5 motor with a 11.5mm rotor, would it make more torque or rpm then say a 4.5 motor with a 12.5mm rotor


need some help regarding this issue

Tx.

M.
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Old 02-02-2008, 03:24 AM   #2
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the smaller the rotor the more rpm /less torque u get

the most used is the 12mm mag
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Old 02-02-2008, 03:28 AM   #3
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The bigger the rotor the bigger the torque. I have ran a speedpassion 3.5 with a 13.5mm rotor back to back with a 12mm. Personally I prefer the smaller higher reving rotors, for a 3.5 on 5 cells 12.5mm is the best comprimise of rev's and torque.
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Old 02-02-2008, 04:00 AM   #4
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Torque has always been the relationship between the outer diameter of a rotor to the axle.

so the bigger the rotor, the more torque.
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Old 02-02-2008, 04:52 AM   #5
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thanks

this really helps

M.
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Old 02-02-2008, 07:21 AM   #6
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Is it a function of the magnetic strength, or the weight of the rotor?
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Old 02-02-2008, 08:06 AM   #7
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it's the airgap between rotor and winding that affects the motors characteristic
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