AM FP Planetary Gearbox with CIM

[AdamHeard]

It's doable, and not that hard of a process. This post describes what we did; you could easily do it without motor dis assembly to cut the shaft short.

Originally Posted by Chris is me

Are you sure the CIM needs the extra reduction to work? I thought the early math showed the gearbox juuuust worked without it, but I'll bite. There used to be instructions on the AM site.

This is definitely possible, my old team's done the mod. It's a nice way to add a little more reduction to a CIM based power system without needing to change things up too much, which is exactly what the team needs. This has absolutely been done before more than once, AndyMark's website claims you can, etc. etc.

Broaching a keyway is probably the easiest way to make it work at this point if there's room. 2mm keyway, 8mm shaft because CIM shafts are metric. I don't know if that can be done. AndyMark sells a 15 / 32 gear that interfaces with the CIM that will work if the broach doesn't. After the gear's all set and the spacer fits right (which has to be made since AM doesn't appear to have it in stock), trimming the end of the motor shaft is all that should be needed.

I don't remember every step of the process in detail, so if there's more trouble I'll bounce an email down.

Not to pick on you specifically, just an example.

I've seen many, many people speculate on processes they do not know and are making pretty wild guesses. Broaching a keyway in this would simply not work.

If you post a technical answer on chief, you better be sure it's valid. People will read your post, and many will take it as fact and not know better.