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Specialized hub flange failure x 2

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Specialized hub flange failure x 2

Old 06-04-17, 11:21 AM
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brian3069
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Specialized hub flange failure x 2

I have two sets of wheels laced to specialized cartridge bearing hubs. One set came off a bike I bought last September. They spent the winter leaning against my work bench. I picked up the rear wheel about six weeks ago and found the broken hub. The other set is on my '84 Supercourse, a friend built those up for me over 30 years ago. Yesterday I was cleaning out the garage, moving the bike to sweep I heard something hit the floor. I looked down to see another broken hub. Who did I piss off?

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Old 06-04-17, 11:35 AM
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79pmooney
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That looks like the work of rodents. Do they not have means to get out of your basement? Are you not feeding them?

In all seriousness, that is just weird. Same failure on two different wheels. Non drive side and front. I've had Campy NR track hubs do that (well, I replaced them at the first cracking, they didn't get that far. (The second hub a warranty replacement for the first. The Campys were known to do that if you used them on the road. I still have no idea why.) I have had maybe one or two other cheap no-names or of unknown history over the past 50 years fail like yours.

Ben
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Old 06-04-17, 12:15 PM
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Anyone cut the spokes out prior to a rebuild?

Send one back to specialized politely requesting a warranty replacement.... I think they had a lifetime warranty back then.
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Old 06-04-17, 12:20 PM
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Hmmm... the 40 hole Specialized rear hub on my Expedition had the exact same failure.
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Old 06-04-17, 12:47 PM
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Originally Posted by repechage View Post
Anyone cut the spokes out prior to a rebuild?

Send one back to specialized politely requesting a warranty replacement.... I think they had a lifetime warranty back then.
I think I would, if only to see what they do. With 14g straight, 40 holes on smallish flange, probably too much tension, and most likely a cast shell of mystery metal; this doesn't entirely surprise me.

I always cut spokes out for a rebuild. Knipex ****s. Perhaps metallurgy has improved enough that it's not necessary now? But I am skeptical. I used to rebuild my wheels when the spokes started to pop, and reusing spokes would have been silly. Usually they were notched at the crossings by then.
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Old 06-04-17, 02:21 PM
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I had a Shimano high flange front hub start to crack around a couple of adjacent spoke holes, which would have led to a similar failure over time. That's my sole experience with hub flange failures.
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Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
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Old 06-04-17, 03:21 PM
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I've had that happen on a 36H Campagnolo Record hub. It was over 20 years old (only owner/rider being me). I attributed it to an instance of chain suck that happened once, jamming chain down by the spoke ends near hubs; but it didn't happen soon after that, much later. Can't tell if your flange failures are both rear wheels or not, but the one in the rear of your photo seems to have broken on the non-drive side, where spokes are not tensioned as high.
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Old 06-04-17, 03:23 PM
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repechage
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Originally Posted by Salamandrine View Post
I think I would, if only to see what they do. With 14g straight, 40 holes on smallish flange, probably too much tension, and most likely a cast shell of mystery metal; this doesn't entirely surprise me.

I always cut spokes out for a rebuild. Knipex ****s. Perhaps metallurgy has improved enough that it's not necessary now? But I am skeptical. I used to rebuild my wheels when the spokes started to pop, and reusing spokes would have been silly. Usually they were notched at the crossings by then.
Not reuse of spokes, but when the spokes get cut out for a while other spokes pull harder.
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Old 06-04-17, 03:24 PM
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-----

As I recall it the vendor for these was Sanshin Matsumoto.

Do you happen to live near the ocean?

Were wheels stored near discharge vent for clothes dryer?

-----

Last edited by juvela; 06-04-17 at 04:24 PM. Reason: addition
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Old 06-04-17, 03:41 PM
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damn! you must be one unlucky man. you can always salvage the hub axle, cones, spokes and rim.
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Old 06-04-17, 05:04 PM
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Gee, now you're worrying me. I have one of those 32h front hubs laced radially on my Trek 710. Sure looked like it could handle it, but now I'm not so sure. Got a "ticking" sound that I thought was just a loose-ish spoke (semi-aero rims dont give much radial play, so I wasn't worried...), but now I'm gonna look really close for a cracked flange.
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Old 06-04-17, 06:02 PM
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Originally Posted by repechage View Post
Anyone cut the spokes out prior to a rebuild?

Send one back to specialized politely requesting a warranty replacement.... I think they had a lifetime warranty back then.
One set my buddy built for me in 1985 with new hubs, spokes and rims, they never been rebuilt. The others are from a Specialized Sequoia, I don't know the history.

I'm not going to hold my breath until I get a replacement hub under warranty.
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Old 06-04-17, 06:05 PM
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Originally Posted by Charles Wahl View Post
I've had that happen on a 36H Campagnolo Record hub. It was over 20 years old (only owner/rider being me). I attributed it to an instance of chain suck that happened once, jamming chain down by the spoke ends near hubs; but it didn't happen soon after that, much later. Can't tell if your flange failures are both rear wheels or not, but the one in the rear of your photo seems to have broken on the non-drive side, where spokes are not tensioned as high.

Both are broken on the non-drive side of the rear wheel.
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Old 06-04-17, 06:33 PM
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I received my 1984 Expedition with the front wheel hub flange looking exactly the same. I assumed it was from a side impact to the fork, but I have scrutinized that fork, and there is no evidence of damage, no paint wrinkling. The thing is straight as an arrow. I've always been anxious about building it up because I was afraid about the fork failing. Now I'm thinking it's a genetic defect.
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Old 06-04-17, 06:51 PM
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Just remembered, I have a another set of these hubs on a Specialized Hardrock that I use for a beater. I'll have to take a close look at those.
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