Using PTO Hub in Transmission Gearboxes

[Joe G.]

Originally Posted by Chris is me

It's way easier to machine gearbox sideplates or gearbox shafts than it is to index and machine even a COTS gear with non-revolved features like dog teeth. They're both certainly possible, but it's just more effort to get the machining on the gear concentric than it is to mill out a gearbox plate from stock. I'd probably do something like this if I wanted to use a different dog gear; it's a good solution I think. I don't see why this wouldn't work.

Yes, machining a dog profile into a steel sprocket on a manual mill was an experience filled with pain and regret. It's easy enough with the right resources, but custom gearboxes can easily be built without them through techniques like this.

[Cothron Theiss]

I wonder if you could actually print this hub? Not out of ABS or PLA, but something more substantial, like Ultem 9085 or even 1010 if you can get your hands on the blasted stuff. I know that if you shift at the appropriate times for whatever ratios you have, the forces on the god would be much smaller, but they'd still be significant. Maybe having a pretty slight first reduction so that the shifting occurs at a higher RPM with less torque?

It's probably not practical to print it, but it might be interesting.