PVC Roller Dilemma

[neoshaakti]

We have run into quite a bump in the road... our original plan was to epoxy a 3 Inch ID piece of PVC (OD 1/8-1/4 inch) to the KOP Keyang Hub, thus being able to drive the roller with a keyang.
Unfortunately, the epoxy did not hold up at all.
We have resorted to attaching a wooden cylinder to the hub using screws, and now intend the attach the PVC to the wood using more screws.
Do you think this will hold, if not, do you have any other ideas for quick fix solutions?
Also, would a keyang turning at 80 RPM free speed be fast enough to expel orbit balls out of a hopper into a trailer from a very short distance?

if a keyang isn't fast enough, should we use a CIM? If so, do you think driving a keyed shaft connected to a hub with a piece of PVC (that conforms to the size of the shaft) set screwed to the shaft be adequate and sturdy?
Hmm, mounting an ID 3" PVC roller to a CIM would be difficult right? Any suggestions...

Thanks

Sincerely,

My Team Procrastinates and Changes Our Minds Frequently