I’ve run the Funcopter belt mod without a belt guide for 40+ flights with no problem, but it has always bugged me that I didn’t have a belt guide, so I made one.

Get a Dragonus II belt wheel base, found here, cut it in half, file it the cut side down so that the bearings are  just short of the edge.

I originally used a Dragonus II belt wheel, but it pushed the belt too far off center.  So what I did was double stack a couple bearings, the belt is still too far over, but good enough.

There’s not enough room to install the other have on the white plastic part.

You’re going to have to grind a bit of the frame, line up the belt base to the belt, mark, drill, you’re good to go