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Author Topic: Sharing- VCR Head STL Files To Make A Rotor Assembly  (Read 407 times)

Online floodrod

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Sharing- VCR Head STL Files To Make A Rotor Assembly
« on: January 28, 2023, 05:09:39 PM »
Just sharing my Tinkercad Links for 3D printing a cool little rotor / mount using a VCR Head. These run smoother and quicker than anything I can design using bearings. And these heads can take some abuse.

These heads spin quick, smooth, and true and can be gotten for free. It needs 3 mm bolts, 1/4-20 bolts, and some mounting screws.

here is a video of the pieces-

Modify the rotor as you need for the magnets you have.  Or whatever.


TinkerCad Links:

I use PLA 70% Infill with Brim because I want it sturdy!  Supports are needed for the rotor.

Rotor Adapter-

Notes-  Base can be mounted either way depending if you need room under the base for the shaft stub.  Holes may or may not fit.  You can epoxy it in the base, use existing holes, or drill new holes.
The rotor adapter fits both my VCR heads.  The threads fit standard 3mm bolts. Use long enough so they bite in good, but do not scrape the bottom of the VCR head. This part needs to be balanced correctly.
The rotor itself is designed for 2" x 1/2" x 1/2" bar magnets. Modify it as you need to fit whatever magnets you want.

Screw base down to platform before mounting the rotor. Mounting screws will not be accessible with the rotor attached.  Use 1/4-20 bolts and nuts to attach rotor to the rotor adapter.

WARNING- This Rotor design does not hold the magnets in from centrifigual force. You can redesign it to hold them in better or epoxy them in.
Use at your own risk.  Improperly fastening magnets and running at high RPM poses dangers of flying magnets.