29:1 harmonic drive gearbox for magnetic loop antennas
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This is a nearly fully 3D printable 29:1 harmonic drive transmission for the tuning capacitor on magloop antennas.
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial
This is a 29:1 ratio harmonic drive gearbox for the tuning capacitor on a magnetic loop antenna. It is almost fully 3D printed with the exception of some screws and four mini bearings. There is a PDF parts list that provides source information for the bearings.
Most of the parts can be printed in whatever plastic you desire, with the exception of the flexigear. The flexigear MUST be printed in TPU 95a with the following slicer settings required.
3 perimeters
0.2mm layer height
Seam position set to random.
Also, you need to print two of the mounting bracket part.
There is an assembly instruction video available, linked below. You must watch it to assure you assemble the drive correctly.
https://youtu.be/H2i2S1fVIUg