Windup Bunny 2 With a PLA Spring Motor and Floating Pinion Drive 3D printable model by gzumwalt

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

Source: MyMiniFactory by gzumwalt

The Windup Bunny 2 With a PLA Spring Motor and Floating Pinion Drive is a free printable 3D model from MyMiniFactory by gzumwalt. Windup Bunny 2 is a dual floating pinion all wheel drive update to my original Windup Bunny of years ago. You can download the STL file from the original listing below and print it at home.

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30 saves Source: MyMiniFactory Updated 2026-09-05

Tags: easter, ultimaker, bunny, autodesk, Fusion360, PLA_Spring_Motor

About this model

Windup Bunny 2 is a dual floating pinion all wheel drive update to my original Windup Bunny of years ago. Even though Windup Bunny 2 is larger (1.5 times) and heavier (120 grams versus 64 grams) than the original Windup Bunny, 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 in order to disengage the rear axle from the spring motor once the spring motor energy is depleted. Windup Bunny 2 is more complicated in that it is all wheel drive thus both the rear and front axles must disengage from the spring motor in order to coast and / or function as a push / pull toy. In order to accomplish this, the des…

Frequently asked questions

Is this 3D model free to download?
Yes. Windup Bunny 2 With a PLA Spring Motor and Floating Pinion Drive is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link above to open the original listing.
Where is the STL hosted?
The download is hosted by MyMiniFactory, not by Thinger. We link you directly to the original listing by gzumwalt.
Who made this model?
Designed by gzumwalt, published on MyMiniFactory. Please credit the creator when sharing your print online.
Can I print this at home?
Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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