Note: For more on this setup go to this CD thread (starts at about post #61). There might be ways to cut off less of the CIM shaft and still only use parts from a Versaplanetary gearbox.
It looks like the VEXpro Versaplanetary has a few more tricks up its sleeve. We didn’t expect to find this, but it is a pretty simple conversion to install a CIM or a MiniCIM to the Versaplanetary gearboxes. JVN posted a small note that gave us the idea.
Here is the complete assembly.
The Motor shaft has to be cut to just over a 1/4 inch. This leaves a very small amount of key, but it does seem to work. You could probably make a custom mount plate or double up the motor mounting plate to get slightly more key profile, but we were trying to do this with just one Versaplanetary kit.
We have to cut a very small 2mm key to make this work.
The Versaplanetary motor mounting plate pilots the CIM motor face perfectly (THANK YOU VEX).
The input stage of the Versaplanetary has an 8mm hole with a 2mm keyway already to go (THANK YOU VEX). The hole is normally where the C-collar for the motor would go.
Assemble the motor into the gearbox input stage.
Using the 7/8 inch 8-32 screw mount the output stage of the gearbox to the CIM. You have to have the input stage off to get the bolt into the motor.