pic: 2451 PWNAGE Planetary Drive

[pwnageNick]

Originally Posted by s_forbes

How is the wheel manufactured? It looks like it's designed to be several layers of plates. Do you have to cut your own ring gear?

This looks like a good way to get a high reduction single stage gearbox without having the wheel's gear teeth drag into the carpet. Pretty cool!

Currently the wheel is made of two parts. The one side of the wheel is a 1/4" this around plate with the inner hub area 1/2" thick to press the 1/2" wide needle bearing into. The other part is the round part that the tread gets riveted to. the ring gear profile would be EDM cut, with the rest of the machining work done on a mill and lathe.

I am debating making it so that the round part of the wheel is split into 3 parts, with he middle part being a steel ring gear and then aluminum parts sandwiching it in place. Some have expressed concern over the wheel being aluminum.

Originally Posted by indubitably

How long until we get the two speed version?

We'll see. I want to lock down the single speed design first, and I think I'd want to build prototype first to prove it works before moving to a two speed.

[ThaddeusMaximus]

<ignore this post since I'm a dumb>

[pwnageNick]

Here is an update. In the album linked below is pictures of all the custom parts necessary for this design. The majority are actually relatively simple, there are really only 2 parts with any real kind of complexity. Also in the album is an updated iso view of the module and a section view to better understand what is going on.

Album here

[Kevin Ainsworth]

Is the single offset needle bearing the only thing supporting the wheel?