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Potential High Flange Hub Failure?

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Potential High Flange Hub Failure?

Old 11-04-10, 07:30 PM
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Potential High Flange Hub Failure?

As my obsession with French high flange hubs continues I’ve acquired a front Normandy Luxe Competition with a slight wobble in one of the flanges. The run-out is a little less than 1/16 of an inch, noticeable when spun while mounted in the vise but not too terrible. Otherwise the cones, axle, and spoke holes look great- no signs of other damage. Is this too much? Am I dancing with the devil if I lace it up this winter? I've heard of Campagnolo hub failures but nothing regarding Normadies.
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Old 11-04-10, 07:49 PM
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I wonder if the hub was dropped and landed on that flange, bending it slightly. I don't think that there's any accepted runout of that much on cast (or forged?) hubs that will be acceptable for most hub makers, but I guess we'll never know with the French back then.....


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Old 11-04-10, 09:22 PM
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clamp the naked hub in an old fork, clamp the fork in a vice and get a dial indicator, and be carefully straighten it
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Old 11-05-10, 08:38 AM
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Keep in mind aluminum doesn't like to be bent twice!
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Old 11-05-10, 08:51 AM
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I think I'd just lace it up and see what happens. A slight bend in the flange isn't going to make it impossible to build a true wheel, and you'll only weaken it further by bending it back and forth trying to get it perfect. You might want to build it with extra crosses... four, even five or more.
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Old 11-05-10, 08:53 AM
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Back in the day I had a hub (Nashbar branded) with varaible run out. As I increased spoke tension the entire hub shell would shift out of alignment.
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Old 11-05-10, 10:45 AM
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Meant to post this in a separate thread but just saw that this one popped up. I was having trouble adjusting my rear derailleur to reliably get my chain to the highest gear. Seemed like it was either always too short and it would rattle something fierce without making it or it would just be a little too far and throw it off the inside. I got so frustrated that I pulled the freewheel off, getting ready to throw a dork disk on as a last resort when I saw this

When I looked at it from the back (no pic) the flange looks pretty bent in parts but I don't know if the bend caused the breakage or vice versa. This was an old sunshine hub from around 79/80. Kinda bummed, now I'm on the hunt for a new rearwheel or a new wheelset to use.
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