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  1. #1
    RC poster
    Join Date
    Apr 2021
    Posts
    2

    Cool Rusty pinion spur

    I just purchased xerun xr8 sct 5100kv motor ...what size spur/pinion should I buy?????

  2. #2
    RC Racer
    Join Date
    Jul 2020
    Posts
    232
    Quote Originally Posted by Smk247 View Post
    I just purchased xerun xr8 sct 5100kv motor ...what size spur/pinion should I buy?????
    I cant say, as my first though is something like, "wow! I feel like 5100kv is pretty high kv rating considering actual weight/mass or Rusty? Orr, R4sty? Not clear on that. I had a redcat lightning epx pro that overheated similar-kv motors on stock gearing...

    Sent from my Pixel 3a using Tapatalk

  3. #3
    RC Competitor
    Join Date
    Mar 2021
    Posts
    67
    Quote Originally Posted by Smk247 View Post
    I just purchased xerun xr8 sct 5100kv motor ...what size spur/pinion should I buy?????
    I'm guessing the smallest one in the world......

  4. #4
    RC Competitor
    Join Date
    Jan 2021
    Posts
    56
    Are you replacing a brushed motor or a VXL motor? I would just run the stock ones and see what happens, then adjust from there. I run the stock brushed gears on my Mini E-Revo with a 5700kv 1/10 scale motor and it’s awesome. I usually only gear taller if my motor goes down in kv; I don’t gear shorter if the motor spins faster, since the whole point of a high kv motor is to make the thing go faster. Of course I’m usually going up in scale on the motor and I don’t get heat issues...

    TL;DR: 11/54
    Last edited by ricky.blobby; 04-17-2021 at 05:57 PM.

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