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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 02-15-08, 11:14 AM   #1
Pete Hamer
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Hub cone compatibility-cone profile.

I was taught that when selecting a replacement hub cone the profile/curve of the replacement cone has to be identical as well as all the other fit issues. There are situations when a replacement cone with a different profile can be installed. The only reason that I can think of for suggesting never using a cone with a different profile is that it would lead to premature bearing failure. Can anyone confirm this and explain why or offer a different reason? Is it related to scuffing? Has anyone tried installing cones with a different profile and had good luck?
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Old 02-15-08, 11:21 AM   #2
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Hub seals, dust covers and spacing can all be affected by mix-and-match cones. I can work around the spacing but I don't want to return to the days of hubs without sealed bearing mechanisms.

I just went through that with a customer bike last week. I didn't have the right replacement for his pitted cone so his decision was to leave his bike with me for another week until I could get the right one. If you have a Shimano hub they're get-able and they're affordable. It's just a PITA looking up the right one.
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Old 02-17-08, 03:25 PM   #3
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I've successfully replaced cones with ones of different profile, no problem. But it depends on how much you care about your bike. I don't really own any that I wouldn't mind buying new wheels for in 10 years.
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