The Random Thoughts of a Geek heading for Banbury
The Random Thoughts of a Geek heading for Banbury

Two Speed Gearbox

I can’t remember where I came across this paper on the design of a ball lock multi-speed transmission system, written by students at the West Virginia University Institute of Technology

The SAE Mini Baja team requires a custom, multispeed transmission for their vehicle. Concurrent engineering with the Baja design team created a working model. The overall purpose of this project was to fabricate a fully functional three-speed [10:1 and 7:1 and 6:1] transmission for a 10 HP vehicle. The product was designed using decision matrices and house of quality. Then, it was drawn up on SolidWorks and a finite element analysis was done on the shafts in order to optimize the design. Lastly, some of the designs were sent to a manufacturer and the rest were machined by the team using Tech’s facilities. The finished product was integrated into the vehicle that will race in future.

Looking through the paper, it looked like it would be a good mechanism to try and 3D Print, opening Fusion 360 and having a play:

So this morning hot off the 3D printer:

I have a few adjustments to make, but at the moment it works nicely 😀

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