Cub Scout Space Derby Winder

Built this gear box to wind 4 rubber band powered rockets at once for our Cub Scout space derby. Rockets will race 4 at a time on a fishing line track. This will ensure all 4 are wound equally. 2 to 1 gear ratio so every time you turn the handle it turns the rubber bands twice. Printed with Alltime3D Fresh Orange 🍊 PETG filament on a Prusa i3 MK3S. #3dprinting #3dprinted #gears #tinkercad #alltime3dcrew #prusa #cubscouts #spacederby #rocket #🚀 #tothemoon

[@johnjudy9634]

This is awesome. Do you have this on the market, or willing to share plans?

[@k2rcb]

We’re currently redesigning it - did not hold up when trying to wind 4 rockets. Ended up doing two at a time. Needs to be much stronger.