That looks like the 3.0.1 version where the motor mounts to the 40mm ball bearing housing. If you look at the latest 3.1 files they have created a new motor mount that connects to the piece of aluminum in the middle.
See the blue piece in the middle, that’s the new motor mount
The difference between the 3.01 build and 3.1 build, is they changed the endstops from photo sensors to mechanical endstops. There’s a few different parts that’s different. Both the sprockets that go into the 40mm bearings are different (one has the mechanical endstop nipple that triggers the endstop) then there’s a spacer that goes in between the 40mm bearing and the sprocket / gear.
List of parts that’s different:
axis_gear.fcstd (Changed Part)
axis_gear_as5601.fcstd (Changed Part)
axis_gear_flange.fcstd (Changed Part)
axis_spacer.fcstd (New Part)
homing_ring.fcstd (New Part)
motor_mount_plastic.fcstd (New Part)
switch_endstop_holder.fcstd (New Part)
Now I am even more confused. If I look at the GITHUB link profided the last changes are more than a year old.
If One is enguraged the build this rotor i would expect that the documentation is right and not several versions.
I am a pure amatur and not a mechanical engineer.
So I must come to the conclusion to bstop for the moment and wait for several years now
Should just be able to print the motor mount and then use the rest of your parts to build a modified 3.01 version if you dont want to print the rest of the 3.1 parts
Just a question about freecad.
So I op[ened a asemblie and i would like to do a free rotatoion of that asemblie.
But it seems that freecad is missing that function. Correct???