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Physical difference between stock and mod motors?

Physical difference between stock and mod motors?

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Old 11-04-2014, 05:37 PM
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Default Physical difference between stock and mod motors?

Are there any physical difference(internally) between a "stock" motor and a mod motor or is it just about the winds? I'm asking because for some odd reason I was reading through the ROAR guidelines and got really confused. I run a 13.5T spec motor so is that considered a stock? I always assumed 27T brushed and 17.5T brushless(no timing, no boost) as stock motors...So basically, what makes a mod motor, a "mod" motor?

Any help making me understand this would be greatly appreciated.

thanks!
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Old 11-04-2014, 05:57 PM
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17.5 is considered "Stock"
13.5 is "Super Stock"
Anything lower than that is considered "Mod"

There are "Mod" motors for 17.5 that don't meet standard ROAR requirements (larger rotors, different magnetic material, larger wire, etc) so some care is needed.
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Old 11-04-2014, 06:00 PM
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Thanks...but what about this motor? It's a 10.5T and it's labeled as a stock spec motor?
http://www.amain.com/Hobbywing-Justo...x-105T/p279117
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Old 11-04-2014, 06:11 PM
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Originally Posted by skeasor View Post
Thanks...but what about this motor? It's a 10.5T and it's labeled as a stock spec motor?
http://www.amain.com/Hobbywing-Justo...x-105T/p279117
Its a "spec" motor as some tracks run 10.5t spec classes, mostly TC or 4wd buggy.
It is a mod motor.
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Old 11-04-2014, 06:14 PM
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Thanks guys!
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Old 11-04-2014, 06:59 PM
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Mod motors can also run a mod rotor. A roar legal stock rotor is very different from a mod rotor.
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