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  1. #1
    RC Racer
    Join Date
    Feb 2013
    Champaign, IL

    Transmission with my 3906

    So I just picked up an old 3906. Not really planning on modernizing it much just wanted to have some fun with it. Yesterday the spur gear started spinning and it doesn't appear to catch into gear all the time. If I give the truck a nudge it will go though. Noe weird sounds coming from the tranny once it starts going though.

    Anyone have any idea what this could be?

  2. #2
    RC Qualifier
    Join Date
    Jun 2012
    nevada, mo
    make sure your slipper is tight enough or that your shifter servo is set right it may be popping out of first and not finding seconde. mine does it all the time because i dont have the servo there.

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