I'm just curious and have never asked Dennis at GEBE this question but why is a quick release rear hub not compatible with the GEBE mounting system?
The problem is not that the axle itself is not strong enough--the problem is that when mounted on a QR axle, the engine's mount is not sitting on the
axle, but on the
QR skewer, which is much thinner. The axle of a QR setup usually does not protrude beyond the frame's dropouts.
I put a GEBE on a QR-axle bike (for a while) and I can tell you one problem that you run into: the notch cut into the bottom of the motor mount is sized to straddle a regular axle, which is about 9mm dia. The engine sits too low when straddling a QR skewer and the belt tensioner won't work right. If you use bushings to raise the engine properly (as I did) then the engine's weight is sitting not on the hollow axle, but on the QR skewer itself, which is much thinner--about 4mm--and (I would bet) could be eventually broken by this use. I had mine together and it
worked, but overall I'd agree it's just not a great idea.
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