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  1. #1
    RC Racer
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    Nov 2015
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    What gearing for the following...

    I'm buying a selection of motors to try, I just wondered what gearing I should be around. The ESC is a SC8.

    What pinion choices for the following?

    Option one.

    Stock 54t 0.8/32 pitch spur with a 3100kv 4 pole motor.

    Option two.

    Mod 1 Revo 40t Spur with a 2650kv 4 pole motor.

    Thanks

  2. #2
    RC Turnbuckle Jr.
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    Feb 2002
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    what pinion?

    what voltage?

    there is no way to pinpoint an exact what is best for you over the internet. what you need to do is test them out. you will need a IR thermometer
    http://www.youtube.com/watch?v=3nhgfjrKi0o

  3. #3
    RC Racer
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    Ok maybe Ive worded wrong.

    What pinion would be a good "starting" Point.

    Volatge is 3S.

    I have an IR gun and I am aware of trial and error for gearing, but rather than buy every pinion under the sun, I thought id ask for a rough pinion to start.

  4. #4
    RC Turnbuckle Jr.
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    there aren't a whole lot of pinions to buy, and they are cheap. since no 2 situations are ever identical, you really need to try using trial and error and checking temps

    if running 3s, you are probably going to want to try the low-mid teens for pinions, and work up from there. I would start on the lower end to be safe
    http://www.youtube.com/watch?v=3nhgfjrKi0o

  5. #5
    RC Qualifier FROSTYEYE's Avatar
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  6. #6
    RC Racer
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    So 12/40 mod1 with a 2650kv motor? Sounds lower than I thought?? In fact both seem lower than I thought? I was thinking of starting at 19/54 with the 3100kv and 16/17 pinion with the Mod 1 40 spur?

  7. #7
    RC Turnbuckle Jr.
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    what are you converting to mod 1?

    the stock gear is mod .8


    if you feel it's too low, then go higher and test it.....

    it's like you asked for answers, then told people they were wrong.....
    http://www.youtube.com/watch?v=3nhgfjrKi0o

  8. #8
    RC Qualifier thesmogman's Avatar
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    It also depends on your driving style and the surfaces you run on. (grass, dirt, blacktop)
    Slash 4x4 Tekin RX8GenII w/Pro4 4300hd

  9. #9
    RC Racer
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    Quote Originally Posted by jimbo74 View Post
    what are you converting to mod 1?

    the stock gear is mod .8


    if you feel it's too low, then go higher and test it.....

    it's like you asked for answers, then told people they were wrong.....
    Considering im dropping KV I just expected them to be higher, after all the Traxxas Speed gearing is 19?

    Its easier for me to obtain Mod 1 5mm pinions thats why Id convert to Mod 1 with the 2650v motor.

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