Is this 3D model free to download?

Yes, Tabletop Tri-Mode Spring Motor Rolling Chassis is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MyMiniFactory. Use the "Download from MyMiniFactory" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by gzumwalt, published on MyMiniFactory. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Tabletop Tri-Mode Spring Motor Rolling Chassis 3D printable model by gzumwalt

Tabletop Tri-Mode Spring Motor Rolling Chassis photo 1

Tabletop Tri-Mode Spring Motor Rolling Chassis

Source: MyMiniFactory by gzumwalt

The Tabletop Tri-Mode Spring Motor Rolling Chassis is a free printable 3D model from MyMiniFactory by gzumwalt. Tabletop Tri-Mode Spring Motor Rolling Chassis adds yet another mode to my previous spring motor designs, "pull back windup". You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

148 saves Source: MyMiniFactory Updated 2026-10-09 License: DOWNLOAD-SHARE-MAINTAIN-LICENSE-CREDIT-REMIX-NONCOMMERCIAL · non-commercial 1 makes

Tags: Windup, SpringMotor, RollingChassis, Tri-mode

About this model

Tabletop Tri-Mode Spring Motor Rolling Chassis adds yet another mode to my previous spring motor designs, "pull back windup". While this small vehicle will not outperform my previous designs for distance, it does add a third mode "pull back windup" to the power and true coast modes of my previous floating pinion designs (here: and here: The previous designs utilized a single floating pinion ("Drive Pinion") that allowed the vehicle to truly coast by disengaging the rear axle from the spring motor, but depended on a knob or key to wind the spring. This design adds a second floating pinion ("Wind Pinion") that provides the mechanism for winding the spring by rapidly rolling the vehicle in reverse, thus no knob or key are required. Video of prototype is here: You will need to purchase 12 "AS…

Frequently asked questions

Is this 3D model free to download?: Yes. Tabletop Tri-Mode Spring Motor Rolling Chassis 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.