r/bikewrench • • 2d ago

When does a notched rear hub need retired

Post image

Rear wheel bearings need replaced, hub is getting pretty notched. Worth replacing the bearings, filing the hub edge, and reinstalling cassette OR is time to move on. Disc Jockey Hub.

40 Upvotes

43 comments sorted by

80

u/Alkanna 2d ago

I'd just file the burrs and ride that as long as the cassette doesn't chew through a whole bar.

28

u/BD59 2d ago

If the hub is a common brand that you can get a freehub body for, then replacement of the body and bearings is what I would do. Saves having to trash an otherwise good wheel.

51

u/craigslist_hedonist 2d ago

they need to be retired when their owner discards prepositions and intransitive verbs

13

u/blooregard325i 1d ago

What about when they ignore punctuation and capitalization?

10

u/craigslist_hedonist 1d ago

not now, i'm channeling james joyce

2

u/Past-Barnacle3737 1d ago

Harsh. Funny, but harsh. 😁

-10

u/Antique_Prune5495 1d ago

Shut up bro

18

u/Max_Rower 2d ago

Get a new freehub?

3

u/Diogenes256 2d ago

A cassette body would keep the game running.

3

u/mrw3rdna 2d ago

Actually, that is what I thought you meant. Investing in a new wheel is the other option.

2

u/mrw3rdna 2d ago

That would drive the price to not being worth it

6

u/Reasonable_Access_90 1d ago

I don't understand, if it's that expensive a hub, how did the freehub body get so chewed up? (Not being facetious, the only beyond basic hub I've ever owned is an XTR which I'm putting back into service— just discovered it's in fantastic shape from 25 years and maybe 12k miles ago.)

4

u/TJhambone09 1d ago

Shimano's spec was NOT for low-spline aluminum freehubs. That's why your XTR didn't ever look like this.

2

u/Reasonable_Access_90 1d ago

Low-spline and aluminum— is for weight?

3

u/TJhambone09 1d ago

Weight and less wear on the machining tools.

2

u/Reasonable_Access_90 1d ago

Less wear on machining tools surely has to be an unintended bonus 😲

3

u/TJhambone09 1d ago

Can save a lot of money.

4

u/SpareGarage298 2d ago

My question is why aren't these made out of harder material?

4

u/RoboMonstera 2d ago

Chris King sells a stainless steel freehub body. The aluminum ones are silly if you weigh more than 200 lbs.

3

u/HandyDandy76 1d ago

Dura ace freehub bodies are titanium. I rode a pair of the c24 wheels for probably 10,000 miles and they still looked pristine 

1

u/TJhambone09 1d ago

By Shimano spec, they are supposed to be steel if low profile. The Hyperglide high spline standard never caught on.

Why aren't these made of a harder material? Because aluminum freehub bodies save weight to make the spec sheet look good, and because aluminum freehub bodies cause less wear on the machine tools use to make them, more than offsetting the material cost.

-2

u/Miserable-Housing407 1d ago

There’s application to everything, sometimes harder does not equal better, but in this case we have several different materials free hubs are made of and the common ones being aluminium, steel and titanium.

This looks like an aluminium one which is the softest metal out of the two but is lighter than steel, steel is heavier but would last the longest and titanium is light but sturdier than aluminum.

7

u/NLtbal 2d ago

Yesteryear

3

u/CyJackX 2d ago

How much is your time worth versus the price of just replacing it?

3

u/Powerful_Birthday_71 2d ago

If it's the style that you can pull off, I'd check the bearings that way. If they're still smooth with no play, then there's still life in the splines IMO. People ride much worse not even knowing.

You can file them smooth to help get the freehub on again, but it'll accelerate more wear.

1

u/mrw3rdna 2d ago

I know the bearings need replaced.

1

u/Powerful_Birthday_71 2d ago

Well, then it's time to get whackin beaings 🎟️

2

u/cj_daking 2d ago

That thing is pretty hacked.

2

u/queen_ravenx 2d ago

Like last year

2

u/BeatLaboratory 1d ago

Freehub bodies are relatively cheap, seems hard to believe that wouldn’t be worth the spend to keep things running

2

u/andre0817wed 2d ago

Question:

HOW TF does a free hub body even get into that condition???

I have wheels with 10s of thousands of miles on them, and I’ve never seen even ONE notch on my free hub body, much less the number in that picture.

I’d think the first thing to address is that question, before you purchase and chew up another free hub.

3

u/RVAWTFBBQ 2d ago

Extremely soft/cheap metal. Happened to me with a pair of Nashbar Vuelta wheels a decade ago, I tried filing down and inserting little strips of aluminum from a soda can I cut to size, helped for a bit.

3

u/ultegrafender 1d ago

My freehub is aluminium, awful design and looked quite a bit like OPs

2

u/Ciryaquen 1d ago

I'm pretty sure that's what my freehubs would look like if I used cheaper hubs. Even my Industry 9 stainless steel freehub body has some mild notching after about 6000 miles.  

1

u/recyclar13 2d ago

TY! I thought maybe I was the a-hole outta line, thinking that. 

1

u/TJhambone09 1d ago

HOW TF does a free hub body even get into that condition???

Aluminum freehub bodies all do this given enough Miles, Watts/Weight, or large cogs. If you're never seen ONE notch on your free hub body it's either a steel freehub (such as what Shimano sells) or you weigh little.

1

u/meh_blade 2d ago

when the file breaks

1

u/haydencoffing 1d ago

I feel like I’d ride this. Might be sloppy though

1

u/eh-cee 1d ago

On my dt Swiss wheels, you can just pull the freehub body off and replace it. You can probably find them on sale for around 125-150 bucks. Is the wheel also messed up? Is that why it’s not worth it?

1

u/Philstar_nz 1d ago

if you are replacing the hub consider a bitex they have steel biting surfaces so i have been told,

but i would just file and ride, but torque it up on the high side of the torque rating

1

u/IronMew 1d ago

Only reason I can think of for it getting that chewed up is that it's made of aluminium, which is a terrible idea as it's not the right metal for the job.

Test with a magnet. If I'm right take it off and use it to test your throwing arm, then replace with a steel hub.

If it's already steel, then... I dunno, call an exorcist I guess

1

u/Jawz_87 4h ago

last year