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rebuild rear hub

Old 07-01-19, 08:55 AM
  #1  
arsprod 
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rebuild rear hub

I think my rear hub is going, SRAM MTH 406R, probably 12k+ miles. Trying to decide if it's worth rebuilding, replacing (not excited about building a wheel), or will replacing the freehub body give me more life? Thanks in advance
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Old 07-01-19, 09:28 AM
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12k miles on a cup and cone hub without service? Might as well open it up to see, but it might be too late.
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Old 07-01-19, 09:45 AM
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Hard to say what to do without some details about what is wrong beyond "going".

If it is a basic cup & cone hub, then it should be easy enough to rebuild. Races can take a lot of abuse. Cones can be replaced. Freehubs can be replaced.

A couple bucks worth of parts, and you're back on the road, good as new.
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Old 07-01-19, 10:11 AM
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Originally Posted by ThermionicScott View Post
12k miles on a cup and cone hub without service? Might as well open it up to see, but it might be too late.
Yeah, I hear you. It's always the bike I use the most (daily commuter) that I ignore the most
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Old 07-01-19, 10:26 AM
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You don't say what "going" means, so I can't say if it's time to repair or replace. But it's worth looking at to decide.
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Old 07-01-19, 10:29 AM
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Are you just bored and need something to do or is the hub giving you problems?

If it is cup and cone, even some of the more abused ones run well with just cleaning and proper adjustment. However if this is the first time you ever ventured into the world of adjusting bearings, you'll wind up spending more than if you just take it to a bike shop.

Replacing the freehub body won't do a thing for you unless it's also is giving you problems. The freehub is really an entirely separate issue from the axle and bearings. They just co-habitate but live separate lives.
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Old 07-01-19, 11:07 AM
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By "going" I mean it doesn't sound right. I've never done bike hubs but do them on cars, which is leading me to take it to a shop instead of messing with it myself!
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Old 07-01-19, 01:45 PM
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I overhaul my shimano rear hubs every 2500 miles or so. Because of this I rarely need to replace the balls, just clean and reassemble. One of my hubs has over 70k miles on it.
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Old 07-01-19, 03:32 PM
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Originally Posted by arsprod View Post
By "going" I mean it doesn't sound right. I've never done bike hubs but do them on cars, which is leading me to take it to a shop instead of messing with it myself!
In my experience, bike hubs don't take to being rebuilt correctly the first try. Do you have a hub vise? It helps immensely.
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one general tip for when the exact hub cone is not readily available. discovered that the curvature of the bearing surface on the shimano 600 was a pretty good "skeleton key" for many applications. it would sometimes require a small change in ball size to make everything come out correctly.
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Old 07-01-19, 07:03 PM
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Originally Posted by arsprod View Post
By "going" I mean it doesn't sound right. I've never done bike hubs but do them on cars, which is leading me to take it to a shop instead of messing with it myself!
Sounds like what? Bearing roughness/rumbling/grinding? Freehub ratchet noise? Squeaking? "Going" doesn't give us much to "go" on.
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Old 07-02-19, 05:08 AM
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Originally Posted by dsbrantjr View Post
Sounds like what? Bearing roughness/rumbling/grinding? Freehub ratchet noise? Squeaking? "Going" doesn't give us much to "go" on.
Sounds like a bearing that's going! Not grinding yet but not the smooth noise I expect when it spins.

Based on everyone's comments I stopped at a shop near my office yesterday and they're going to rebuild it for me. I don't have the right tools or patience!
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Old 07-02-19, 12:17 PM
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I believe that this is your hub. It is serviceable. Formula
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Old 07-02-19, 12:43 PM
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Originally Posted by dsbrantjr View Post
"Going" doesn't give us much to "go" on.
Excellent
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Old 07-03-19, 04:59 AM
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Originally Posted by davidad View Post
I believe that this is your hub. It is serviceable. Formula
Does Formula make SRAM's hubs, or at least the cheap ones?
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Old 07-03-19, 11:58 AM
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Originally Posted by arsprod View Post
Does Formula make SRAM's hubs, or at least the cheap ones?
I don't know. I would need to see it, even then it' \s difficult to tell between it and other Chinese manufacturers such as Novatech or Joytech.
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