motobecane rear hub
05-03-13, 10:29 AM
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motobecane rear hub
i have a circa 1980 motobecane blue mirage. 27inch rims, atom rear hub with six pack,130cm spindle. the cones are pitted and I cannot find replacements. anyone help???
05-03-13, 11:30 AM
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Probably Normandy = obsolete. Find a better one on ebay and switch out the guts?
Sometimes the pitting doesn't cause the problems you might think...
Sometimes the pitting doesn't cause the problems you might think...
05-03-13, 12:51 PM
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It might be worth checking in Shimano cone sizes - a while back I was looking for replacement cones for Atom / Maillard hubs (6 speed, - also around 1980) - and a couple of people pointed me to Shimano - but I passed on the hubs to a friend before I followed that one up.
My experience with Atom in particular, is that almost every used hub I have pulled apart has pitted cones, but as Dbakl suggests, often there was no sign of it, in the sound or the feel of the hubs in action. Good luck with that.
My experience with Atom in particular, is that almost every used hub I have pulled apart has pitted cones, but as Dbakl suggests, often there was no sign of it, in the sound or the feel of the hubs in action. Good luck with that.
Last edited by capella lugs; 05-03-13 at 12:54 PM. Reason: added a bit more detail
05-03-13, 02:32 PM
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sand the cones using auto quality sandpaper. overhaul the mirage, sell it, and find a mid '70s grand touring, grand jubile, grand record, le champion and/or team champion.
05-03-13, 02:53 PM
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There was an article in Bicycling back in the 70s. Pack your hubs with polishing paste and ride for awhile. Then disassemble, clean and go back to grease. Honestly, I never tried.
05-03-13, 03:04 PM
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You could likely use a replacement axle set (cones, spacers, axle) from e.g. "Wheels Mfg." in your hub, assuming this isn't a "Helicomatic" hub. Just match the axle length to what you have now.
05-03-13, 06:41 PM
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Whether due to material quality, corrosion, or just fatigue from use, I wouldn't expect to get much further life out of a cone, cup, or ball bearing that was pitted. I had little difficulty finding a replacement rear axle for my 1978 Moto GJ a few years ago when I found a cone had been pitted slightly due to corrosion. I had to shorten the axle for a 120mm rather than 126 mm dropout spacing, but that was no big deal. I found the replacement axle on Ebay, but, unfortunately, I no longer remember my search criteria; sorry I can't help with that. It only cost about 10 bux.
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