Using Window Motor with VEX Ball Shifter?

[lcoreyl]

Originally Posted by Monochron

Yeah, we don't really plan on modifying the motor so we should be good there.

We are thinking of cutting a keyway in a 5/16" shaft and connecting that shaft between the gearbox gear and this coupler. Then we can use that coupler to insert into the black star coupler for the Window Motor. Sound feasible?

this coupler is for 10mm shaft to 1/2". how about your black coupler to 1/2 shaft to andymark 500 hub bolted to another 8mm hub with a 8mm shaft(cim size) in it?

Are you using the gear reduction of the gearbox, or is it modified just to use the shifting aspect to release a winch?

[MrBasse]

What exactly are you trying to do with the window motor and gearbox combo? Any further reduction on a window motor will make it painfully slow.

[Monochron]

Here is what we ended up doing:
http://imgur.com/a/77KvI

The gearbox gear is put on a 5/16" rod with a cotter pin to hold it in place. That rod then goes inside a wooden 1/2" dowel which goes inside the black coupler. That way the 5/16" rod fits snuggly inside the wood and the black coupler. Last, a cotter pin is put through the black coupler so that it pierces the wood dowel and the 5/16" rod.

The whole thing was done with only a electric drill and a vice. And LOTS of measuring and precision work. So far it works great, but we are going to make a backup or two just in case.

[Monochron]

Update to that design if you are interested. The wood dowel is NOT suffiecient for the loads that we are putting on this motor.

During testing today the cotter pin that holds the black coupler to the inner shaft tore through the wooden dowel inside the coupler, and got wrapped completely around the inner shaft. We assumed that it broke off and shattered but it just got sucked through the wood and bound around the inner shaft.

Tomorrow we will be replaces that wood dowel with a drilled out aluminum stock rod.