[ferrari77]

I made the pulleys have a hex bore and attached a hex bore hub to the wheel so they will spin with the axle

Now how do I deal with the axle going through the frame right now with no bearing?

I thought about using a bearing hub and mounting it to the side of the aluminum channel but the axle is now a hex axle and I cannot find bearings that fit hex axles

Any thoughts on how I fix this?