HELP Lego 8421 Mobile Crane

i have a lego technic 8421 Mobile Crane and i want the base to be Motorized, how do i do it any help would be great.

Post a comment
    Top Discussions
    1. Weekly game codes giveaway 183722
    2. How much would you pay for this chair?1214
    3. GOT Leaks again614
    4. PS4 Beta Software Version 5710

    See more discussions