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Freehub problem

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SimonLee Offline
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Posts: 7
Joined: Jan 2013
Post: #1
Freehub problem
The pedal is able to move forward but the rear wheel doesn't turn. I was riding outside in really cold weather and I think it somehow has an effect on my hub. Then ended taking the train back. Brought my bike home after 2 hours I check my bike again and the pedal is able to move forward but this time the rear wheel is turning. This is strange. It feels like one spot where it sorts of makes the chain skips but the chain is not really skipping on the cog or chain-ring. It's definitely the inside of the freehub that have something that is making it skip.

Any know what is wrong and how to fix it??

My other question is this bike I have is multi-speed converted into single speed using chain tensioner. So it's using a freehub cassette. I been swapping cogs on and off testing out gear ratios.

Does taking off the lock-ring and putting the lock-ring back have anything to do with stripping or damaging the freehub ?? I feel like sometimes I over tighten the lock-ring and sometimes I tighten it just right.
Jan 24, 2013 05:57 PM
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Joe_W Offline
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Posts: 1,175
Joined: Jul 2009
Post: #2
RE: Freehub problem
(Jan 24, 2013 05:57 PM)SimonLee Wrote:  The pedal is able to move forward but the rear wheel doesn't turn. I was riding outside in really cold weather and I think it somehow has an effect on my hub. Then ended taking the train back. Brought my bike home after 2 hours I check my bike again and the pedal is able to move forward but this time the rear wheel is turning. This is strange.

No, this is normal. Old oil + gunk + cold = pawls in the freehub cannot move freely. On some freehubs you can disassemble, clean, lube, and finally reassemble the mechanism (eg. Mavic and I believe Zipp). You probably need to do this, or maybe try to flush it out with some sort of solvent. Depends on the hub what can be done.

Quote:It feels like one spot where it sorts of makes the chain skips but the chain is not really skipping on the cog or chain-ring. It's definitely the inside of the freehub that have something that is making it skip.

This would be the pawls in the ratchet mechanism not engaging fully. Then they will slip and you get these "jumps".

[/quote]
My other question is this bike I have is multi-speed converted into single speed using chain tensioner. So it's using a freehub cassette. I been swapping cogs on and off testing out gear ratios.

Does taking off the lock-ring and putting the lock-ring back have anything to do with stripping or damaging the freehub ?? I feel like sometimes I over tighten the lock-ring and sometimes I tighten it just right.
[/quote]

Use a torque wrench mate! But in general: If you have a freehub the lock ring has nothing to do with the innards. It screws on the hub body and cannot affect the ratchet mechanism inside.
Jan 25, 2013 12:40 AM
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SimonLee Offline
New Member


Posts: 7
Joined: Jan 2013
Post: #3
RE: Freehub problem
The hub that my bike has is called Shimano AceraX.

What type of solvent can you recommend me??

And how do I flush the hub? Do I lay the wheel down on floor with the free hub body facing up and just pour the solvent and let it soak down into the hub??

How long I have to wait when I flush it??

Thanks!!

(Jan 25, 2013 12:40 AM)Joe_W Wrote:  
(Jan 24, 2013 05:57 PM)SimonLee Wrote:  The pedal is able to move forward but the rear wheel doesn't turn. I was riding outside in really cold weather and I think it somehow has an effect on my hub. Then ended taking the train back. Brought my bike home after 2 hours I check my bike again and the pedal is able to move forward but this time the rear wheel is turning. This is strange.

No, this is normal. Old oil + gunk + cold = pawls in the freehub cannot move freely. On some freehubs you can disassemble, clean, lube, and finally reassemble the mechanism (eg. Mavic and I believe Zipp). You probably need to do this, or maybe try to flush it out with some sort of solvent. Depends on the hub what can be done.

Quote:It feels like one spot where it sorts of makes the chain skips but the chain is not really skipping on the cog or chain-ring. It's definitely the inside of the freehub that have something that is making it skip.

This would be the pawls in the ratchet mechanism not engaging fully. Then they will slip and you get these "jumps".
My other question is this bike I have is multi-speed converted into single speed using chain tensioner. So it's using a freehub cassette. I been swapping cogs on and off testing out gear ratios.

Does taking off the lock-ring and putting the lock-ring back have anything to do with stripping or damaging the freehub ?? I feel like sometimes I over tighten the lock-ring and sometimes I tighten it just right.
[/quote]

Use a torque wrench mate! But in general: If you have a freehub the lock ring has nothing to do with the innards. It screws on the hub body and cannot affect the ratchet mechanism inside.
[/quote]
Jan 26, 2013 07:54 AM
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1FJEF Offline
Veteran Member

Northern Mexico (Central CA)
Posts: 582
Joined: May 2011
Post: #4
RE: Freehub problem
[quote='SimonLee' pid='25956' dateline='1359212044']
The hub that my bike has is called Shimano AceraX.
[quote='Joe_W' pid='25935' dateline='1359099636']

A Shimano AceraX 7 speed freehub is about $20 last time I checked, but they were getting harder to find. If you flush it out with solvent, you're going to want to service the bearings. You can try Aerosol brake cleaner from wal mart, about $3 per can. If you've got any Kano Kroil that'll work. I'm not a WD 40 fan, but if you've got some......
I haven't seen the shimano freehub take down tool for sale for years, so you can't get fresh grease down in there after you flush it, you'll just have to pour some tri flo or something in there. In fact, tri flo may help flush it a bit too.
Jan 26, 2013 10:21 AM
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SimonLee Offline
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Posts: 7
Joined: Jan 2013
Post: #5
RE: Freehub problem
I tried using WD-40. I hope it won't make it worst will it?? So far it looks like the pawls inside are getting free and now there is no more skipping. I hope it stays like this for the next few days.

(Jan 26, 2013 10:21 AM)1FJEF Wrote:  [quote='SimonLee' pid='25956' dateline='1359212044']
The hub that my bike has is called Shimano AceraX.
[quote='Joe_W' pid='25935' dateline='1359099636']

A Shimano AceraX 7 speed freehub is about $20 last time I checked, but they were getting harder to find. If you flush it out with solvent, you're going to want to service the bearings. You can try Aerosol brake cleaner from wal mart, about $3 per can. If you've got any Kano Kroil that'll work. I'm not a WD 40 fan, but if you've got some......
I haven't seen the shimano freehub take down tool for sale for years, so you can't get fresh grease down in there after you flush it, you'll just have to pour some tri flo or something in there. In fact, tri flo may help flush it a bit too.
Jan 26, 2013 06:36 PM
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Joe_W Offline
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Posts: 1,175
Joined: Jul 2009
Post: #6
RE: Freehub problem
Hm. WD40 is a short term remedy at best and a recipe for failure in the long run. It has the nasty property that it leaves a residue that gums up. On teh freehub body: aren't most (all?) Shimano freehub bodys compatible? Or is the main problem here that it is a 7 speed that is a bit narrower than the current 9 speeds? Replacing with a new freehub body plus some spacers might work, I guess. If the frame can accommodate the additional 3mm or so of width.
Jan 27, 2013 12:46 PM
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SimonLee Offline
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Posts: 7
Joined: Jan 2013
Post: #7
RE: Freehub problem
Now that I have WD40 and you said it will leave residue that gumps up. what other stuff would you use? I don't want my hub to fail in the long run either.

Thanks tp everyone who helped!!


(Jan 27, 2013 12:46 PM)Joe_W Wrote:  Hm. WD40 is a short term remedy at best and a recipe for failure in the long run. It has the nasty property that it leaves a residue that gums up. On teh freehub body: aren't most (all?) Shimano freehub bodys compatible? Or is the main problem here that it is a 7 speed that is a bit narrower than the current 9 speeds? Replacing with a new freehub body plus some spacers might work, I guess. If the frame can accommodate the additional 3mm or so of width.
Jan 27, 2013 02:38 PM
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1FJEF Offline
Veteran Member

Northern Mexico (Central CA)
Posts: 582
Joined: May 2011
Post: #8
RE: Freehub problem
You need a 7 speed freehub if that's what's on there now.
If the "long run" is a concern I would suggest a new freehub. Tri flow or just more WD 40 should get you by for now.
You could also watch out for a new/used Single Speed wheel on sale.
Jan 27, 2013 09:28 PM
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SimonLee Offline
New Member


Posts: 7
Joined: Jan 2013
Post: #9
RE: Freehub problem
any other options besides tri flow??

(Jan 27, 2013 09:28 PM)1FJEF Wrote:  You need a 7 speed freehub if that's what's on there now.
If the "long run" is a concern I would suggest a new freehub. Tri flow or just more WD 40 should get you by for now.
You could also watch out for a new/used Single Speed wheel on sale.
Jan 31, 2013 01:28 PM
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painkiller Offline
Veteran Member

Peoria, IL. USA
Posts: 1,245
Joined: Mar 2011
Post: #10
RE: Freehub problem
Ideally you should replace your free-hub.


There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
Jan 31, 2013 07:08 PM
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mmontero Offline
New Member


Posts: 2
Joined: May 2013
Post: #11
RE: Freehub problem
(Jan 24, 2013 05:57 PM)SimonLee Wrote:  The pedal is able to move forward but the rear wheel doesn't turn. I was riding outside in really cold weather and I think it somehow has an effect on my hub. Then ended taking the train back. Brought my bike home after 2 hours I check my bike again and the pedal is able to move forward but this time the rear wheel is turning. This is strange. It feels like one spot where it sorts of makes the chain skips but the chain is not really skipping on the cog or chain-ring. It's definitely the inside of the freehub that have something that is making it skip.

Any know what is wrong and how to fix it??

My other question is this bike I have is multi-speed converted into single speed using chain tensioner. So it's using a freehub cassette. I been swapping cogs on and off testing out gear ratios.

Does taking off the lock-ring and putting the lock-ring back have anything to do with stripping or damaging the freehub ?? I feel like sometimes I over tighten the lock-ring and sometimes I tighten it just right.

I have the same problem my rear cassette is loose i pedal forward but the rear wheel dont move is loose the cassette Sad what i t can be
May 23, 2013 08:21 AM
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