Windup Bunny 2 With a PLA Spring Motor and Floating Pinion Drive

cults3d

https://www.youtube.com/watch?v=fcOHOBSCXjM Windup Bunny 2 is a dual floating pinion all-wheel drive update to the original Windup Bunny I created years ago. Despite being larger (1.5 times) and heavier (120 grams versus 64 grams), it runs faster and further thanks to its dual floating pinion / rotating pinion gear carriage design, along with a stronger spring. I've designed rear wheel drive floating pinion models before that utilize both gravity and rotational momentum to disengage the rear axle from the spring motor once the spring motor energy is depleted. Windup Bunny 2 is more complex in that it's an all-wheel drive model, requiring both the front and rear axles to disengage from the spring motor to coast or function as a push / pull toy. To accomplish this, I incorporated a rotating dual floating pinion carriage with a heavy rear mass that disengages both the front and rear axles from the spring motor once the spring motor energy is depleted. Windup Bunny 2 is another favorite among our kids and grandkids, providing both a wind-up and push / pull toy for older and younger family members. While much sturdier than the original Windup Bunny, it requires patience and finesse to print, assemble, and test. As usual, I probably forgot a file or two or who knows what else, so if you have any questions, please don't hesitate to point them out as I do make mistakes in plenty. Designed using Autodesk Fusion 360, sliced using Cura 3.5.0, and printed in PLA and Tough PLA on an Ultimaker 2+ Extended and an Ultimaker 3 Extended.