If you’ve been following my previous PLA Spring Motor Rolling Chassis designs (here: http://www.thingiverse.com/thing:2025760, here: http://www.thingiverse.com/thing:2011107, and here: http://www.thingiverse.com/thing:430050), you will have noticed they are all “open frame”, primarily because I just like to watch gears in motion, secondary is of course weight reduction (or did I get that backwards?).
Dual Mode Windup Car is my first attempt at a “rolling body” design, but I did leave the windows down so I can still watch the gears. This design is a significant weight increase over the previous designs, and to compensate I did increase the final drive gear ratio from 1/25 to 1/16 to increase the torque.
download the files on: http://www.thingiverse.com/thing:2054125
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