June 16, 2026
Description
Current distance record by: <<< your name here? >>>
We verified this car travels 50+ meters, but we haven't found its limit yet! Can you beat 50+ metres? Test your build on a smooth surface and leave a comment with a photo and your exact distance result.
If you break the record, we will update the models name in the headline to "MouCar XX" (where XX is your new record distance) and show your username on this page.
Key Features:
Adjustable wheel size - from 4cm to 18cm diameter
Adjustable Lever Arm length - slide the clip up or down and adjust the force
Adjustable mousetrap position - extends the lever arm to its maximum of 40cm
Zero-Glue Assembly
Modular
Video:
Video created by TM. Video plays faster than real time.
This car is perfect for teaching. By swapping between the small and large wheels, you can demonstrate how changing the wheel diameter affects speed and distance. The adjustable lever arm allows users to test how the "pull" of the spring translates into rotational force.
2x Steel Axle 2mm diameter, length: 100mm
2x Wooden Square Sticks 6x6mm , length: 50cm -> frame
1x Wooden Square Stick 6x6mm, length: 40cm -> lever arm
1x Mousetrap Standard Victor Brand (do not use other than Victor mousetraps) available at your local hardware store f.e. https://www.obi.de/p/1394576/protect-home-mausefallen-classic-2-stueck
1x Fishing line / String
All parts you need in one file: all_parts_no_whees.stl
add wheels from the wheels folder (rear: 120mm, front 80mm recommended)
for repair and maintenance: see folder single parts
No support - print orientation as in the file
4-5 perimeter walls
0% infill
Tested with PLA+
Click together as in the pictures. Hint for the axle: Insert both sides of the axle into a wheel hub by 33% of its length. Use a hammer to hit the assembled axle one or two times. The final length with hubs is 100mm.
For more detailed assembly instructions see: https://www.instructables.com/MouCarXX-Mousetrap-Car-Long-Distance/
Sanding wood is easier than sanding plastic
If clips are too tight break them off.
If mousetrap bracket is to loose fix a cable tie at the end. It will hold it in place
Disclaimer
I do not take any liablity for damages or injuries. Build and use at your own risk. The linked products and pages are for reference only. I dont get paid for from the owners.
License:
Creative Commons — Attribution — Noncommercial — NoDerivatives
Mofantastico
