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Thread: Explain motors please

  1. #1
    Junior Member
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    Explain motors please

    New to RC so please bear with me. Can somebody please explain how electric motors are rated. Lower KV is better or worse or just different?

  2. #2
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    Lower kv will have more torque. What are you looking for?

  3. #3
    Senior Member rcman's Avatar
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    I was wondering the same thing, it was all really confusing. But then someone told me this:

    What "kv" means
    here's the run down:

    High KV:
    huge amp draw
    has to be geared down (looses revs)
    have to be a HAWK on the temps so it doesn't overheat
    sucks packs down real quick
    it is extreeeemely fast though

    Low KV:
    lower amp draw
    you can gear up and keep temps down
    don't have to be a hawk on the temps
    keeps packs goin nice and long
    it is slower than the higher KV systems but the torque can be insane
    If nobody comes back from the future to stop you, how bad of a decision can it be?
    -Traxxas Rustler VXL
    -Axial SCX10 Jeep Wrangler
    -Helion Animus brushless

  4. #4
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    What are you putting the motor in?

  5. #5
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    Thanks guys. I already have the Traxxas 3500 in my slash. I was just wondering what the deal was.

  6. #6
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    Found this quick ref guide on RC Car action.... Less turns or higher kv the faster rotation, less torque

    But with all different types of applications it comes down to how well you can gear it and what your going to be using it for!



    http://www.rccaraction.com/blog/2011/08/05/brushless-motors-%E2%80%93-turns-vs-kv-rating/
    Last edited by Guy_With_RC; 01-13-2013 at 12:42 AM.

  7. #7
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    Gearing is pretty simple to understand....

    If hot gear your pinion up teeth or your spur gear down

    If cold then go down in your pinion and up with your spur

    Try to always start with a ball park temp/speed by changing your pinion first then fine tune with your spur gear

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