GEBE and flip hubs

T

Torques

Guest
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?
 


ocscully

Member
Joined
Jun 23, 2007
Messages
659
QR Axle Compatability?

My best guess is that a Quick Release axle does not extend out past the drop-out and there fore the main rack mounting straps have nothing to rest/mount on. I suppose you could get a longer OR axle and custom cut it to a length that would allow the proper mounting point for the rack. The axle needs to extend out past the drop-out the thickness of the rack material on each side. You may need to get a longer QR Skewer as well.
Scully
 
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5

5-7HEAVEN

Guest
:cool:probably because of the motor support arms that connect to the rear axle. i'm presuming that quick-release axles are too short.
more than likely, quick-release hubs CAN be used, if you modify your support arms to connect to the frame, not at the rear axle.
 
D

DougC

Guest
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.
~
 
T

Torques

Guest
Wow, great information, I haven't looked at any of my quick release mechs for awhile but now that you point it out, yes that protrusion is very small in diameter compared to a regular axle.
 
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