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  1. #1
    RC Enthusiast
    Join Date
    Aug 2008
    Location
    sunshine coast queensland
    Posts
    20

    Unhappy Slow 3908 PLS Help

    Hello all i am running a stock 3908 with 20/68 gearing with . . . 5000 mah 2 s lipos and my top speed is 24.8 Mph using a garmin etrex 10 gps for speed checking , the traxxas site says i should be getting 40 + mph this is way off any help would be greatly appreciated i also have full telemetry setup but cannot figure out the final drive ratio!


    Edited for language abuse. If you see a starred out word in your post, you must edit it out to avoid earning warning points; this also applies when a company or product name has been blocked by the filter.
    Last edited by cooleocool; 10-04-2013 at 08:52 AM.

  2. #2
    RC Competitor
    Join Date
    Aug 2013
    Location
    Ont, Canada
    Posts
    79
    I assume you are running on a hard surface? Try the optional 62 tooth spur gear....just check the temps to make sure things don't heat up too much.

  3. #3
    RC Champion
    Join Date
    Jan 2012
    Location
    muscoda, wi
    Posts
    1,245
    watching temps of course. I run 20/54 all the time.
    I'm not krazy. My mother had me tested.

  4. #4
    RC Champion
    Join Date
    Feb 2012
    Location
    Brookline, NH
    Posts
    1,206
    Have you checked to see if the esc is set for 100% forward speed? Also if you have the telemetry and ipod check to see that it isn't set to training mode? Just a thought.

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