|Shimano hub life||seeker333|
Mar 12, 2003 8:46 PM
|How long (mileage-wise) do Ultegra hubs last under normal use, with proper maintenance?
It appears to me that the limiting factor is the life of the bearing races. I expect that eventually a rut would wear into the races and/or cones to match the ball bearing.
Thanks for any feedback.
|Depends on many factors...||PsyDoc|
Mar 13, 2003 5:24 AM
|but I had an ultegra set of hubs that lasted from 1992 to 2001 when I sold the bike. The hubs were fine and I imagine they are still being ridden. Someone on this forum, I believe, stated that ultegra/dura ace hubs will last longer than most of us want.|
|Indefinite if well maintained and properly adjusted......||DaveLobster|
Mar 13, 2003 5:57 AM
|These hubs are overbuilt for their intended purpose. If you repack them regularly and don't adjust them too tight, they will last a long time. Repacking should be done more frequently if you ride in the rain. The freehub body (the black part with the splines) is probably more of a limiting factor than the races, as it is typically considered non-servicable. But short of submerging it, I don't know how you would kill a freehub body.
I have a pair of '97 600 (8-speed ultegra) hubs which have lasted over two sets of rims, and will probably have a third set soon. -Dave
|Longevity is pretty good||Eric_H|
Mar 13, 2003 11:52 AM
|Agreed, the races will last a long time with proper maintenance. I usually put new ball bearings in every second overhaul, just because they are cheap. But really, as long as the bearings are shiny they are fine to re-use.
As for the freehub, it will have a finite life. There is the "Freehub Buddy" lubing tool (forget who makes it), but in general I just replace them once they start to have frequent mis-engagements.
|freehub buddy is made by Morningstar (Tooling?)nm.||satanas|
Mar 18, 2003 6:21 AM
|still using 1978(ish) hubs....||satanas|
Mar 18, 2003 6:32 AM
|Currently have one pair 28H Dura-Ace EX + bladed + Open 4CD, one pair 28H DAEX + butted + Open 4CD, pair of AM (17") wheels with 28H DAEX plus some other wheels with DAAX and 600AX hubs. (Then there's the threaded hubs...)
All DA hubs have been trouble free WRT bearings. Some freehub bodies have been changed to 8 speed.
My highest mileage and "newest" wheels have a 32H DA 8 speed hub (new in 1991)...
Freehub bodies can wear out *eventually* - the teeth on the body which engage the pawls round off if they slip much (lack of servicing/lube). You can replace the pawls (assuming you have some) but the body itself isn't really repairable.
Pretty hard to justify replacement when they just don't wear out...