Bicycle speedometer magnet fixture
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This clamp prevents false orientation of the magnet of a bike speedometer.
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Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution — Noncommercial
The problem
The magnet of the electric bike of my father-in-law used to rotate on the spoke it was attached to by the default single-screw mechanism (see picture below) causing the speed controler of the motor to malfunction (for anyone interested: Bosch error code 503).
The solution
To prevent the rotation of the magnet and its securing mechanism, I designed a fixture whith which the magnet is fixated on two spokes instead of one, preventing rotation. The fixture was designed for a magnet with 10mm diameter.
I printed the fixture in Prusa PETG Orange at 0,2mm layer hight, 100% infill without supports. The bottom radius got a little distorted, but still worked fine.
Disclaimer
This design was not tested over an extensive period of time. Weather and influences from biking might affect the mechanical properties of the fixture. Use at own risk!