Gearing problems?
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Gearing problems?
I've recently picked up a used On-One Inbred 29er and I'm generally very pleased with it, apart from the gears...
The previous owner has fitted a single 32T chain ring and a SLX 11-speed 11-46 cassette. The rear mech is a SLX RD-M7000-11.
The problem is that when its in the lowest gear, the top jockey wheel is only just making contact with the chain and its making a pretty unattractive rattling noise!
I've tried fiddling with the B-screw, but if I adjust it to suit the lowest gear, the mech hits the cassette when I change to the next gear up!
I think, this cassette may be beyond the range of the mech?
Any ideas how to fettle this?
Different cassette or mech? Mech extender thingy?
Thanks in advance for the help
The previous owner has fitted a single 32T chain ring and a SLX 11-speed 11-46 cassette. The rear mech is a SLX RD-M7000-11.
The problem is that when its in the lowest gear, the top jockey wheel is only just making contact with the chain and its making a pretty unattractive rattling noise!
I've tried fiddling with the B-screw, but if I adjust it to suit the lowest gear, the mech hits the cassette when I change to the next gear up!
I think, this cassette may be beyond the range of the mech?
Any ideas how to fettle this?
Different cassette or mech? Mech extender thingy?
Thanks in advance for the help
Re: Gearing problems?
IT should work according to the Shimano specs.
Low sprocket_Max. 42T(2x11-speed), 46T(1x11-speed)
Have you checked the hanger is straight?
I would do that first, then check the chain length is correct and then set the mech up again from scratch.
If after all that, it's still playing up, then it's head scratching time.
https://si.shimano.com/pdfs/um/UM-5XZ0A-005-00-ENG.pdf
Low sprocket_Max. 42T(2x11-speed), 46T(1x11-speed)
Have you checked the hanger is straight?
I would do that first, then check the chain length is correct and then set the mech up again from scratch.
If after all that, it's still playing up, then it's head scratching time.
https://si.shimano.com/pdfs/um/UM-5XZ0A-005-00-ENG.pdf
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Re: Gearing problems?
Are the parts actually in good condition?
May the bridges you burn light your way
- whitestone
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Re: Gearing problems?
Shimano are somewhat conservative with their stated mech capacities but that mech and cassette should be fine - my wife has the same on her Stooge.
As Duncan notes, start with the mech hanger alignment though usually it affects indexing rather than cassette clearance.
From
As Duncan notes, start with the mech hanger alignment though usually it affects indexing rather than cassette clearance.
From
That sounds more like indexing - when you've the lowest gear selected look at the whole drivetrain from the rear, the guide jockey wheel should be directly beneath the cog, if it's sitting between lowest and second lowest then you need to adjust the high stop screw to let the cage move over a bit.when it's in the lowest gear, the top jockey wheel is only just making contact with the chain and its making a pretty unattractive rattling noise
Better weight than wisdom, a traveller cannot carry
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Re: Gearing problems?
Apparently it was all done at his LBS.dlovett wrote: ↑Thu Oct 10, 2019 12:14 pm IT should work according to the Shimano specs.
Low sprocket_Max. 42T(2x11-speed), 46T(1x11-speed)
Have you checked the hanger is straight?
I would do that first, then check the chain length is correct and then set the mech up again from scratch.
If after all that, it's still playing up, then it's head scratching time.
https://si.shimano.com/pdfs/um/UM-5XZ0A-005-00-ENG.pdf
All looks fine. All gears indexing smoothly.
I think I’ll check again!
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Re: Gearing problems?
Cassette and mech are brand new!
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Re: Gearing problems?
Done all that and it’s indexing smoothlywhitestone wrote: ↑Thu Oct 10, 2019 12:27 pm Shimano are somewhat conservative with their stated mech capacities but that mech and cassette should be fine - my wife has the same on her Stooge.
As Duncan notes, start with the mech hanger alignment though usually it affects indexing rather than cassette clearance.
From
That sounds more like indexing - when you've the lowest gear selected look at the whole drivetrain from the rear, the guide jockey wheel should be directly beneath the cog, if it's sitting between lowest and second lowest then you need to adjust the high stop screw to let the cage move over a bit.when it's in the lowest gear, the top jockey wheel is only just making contact with the chain and its making a pretty unattractive rattling noise
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Re: Gearing problems?
I think this thread needs pictures. One with the system in the lowest gear (46T) and one in the next gear, taken from the side.
Better weight than wisdom, a traveller cannot carry
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Re: Gearing problems?
Has the LBS managed to fit a Direct Mount mech by mistake?
As Bob says, photos would help.
As Bob says, photos would help.
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Re: Gearing problems?
A quick search shows that the mech is standard mount but direct mount compatible.ScotRoutes wrote: ↑Thu Oct 10, 2019 1:02 pm Has the LBS managed to fit a Direct Mount mech by mistake?
Edit: The drawings on this page - https://bike.shimano.com/en-EU/technolo ... lleur.html - show the difference. So if you mount a mech that has the B-link on a direct mount hanger then the mech will sit too far back from the cassette. Conversely if you mount a mech without the B-link on a standard hanger then it will sit too close to the cassette.
Last edited by whitestone on Thu Oct 10, 2019 1:19 pm, edited 1 time in total.
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Re: Gearing problems?
Here’s a photo in the lowest gear:
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Re: Gearing problems?
Here’s one in the second lowest gear:
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Re: Gearing problems?
Is your chain the right length ,last time I had the mech at that angle was when I chopped a chain a couple of links too short not paying attention
Re: Gearing problems?
Exactly my thought, Looks like the chain may need an extra link to me.middleagedmadness wrote: ↑Thu Oct 10, 2019 1:21 pm Is your chain the right length ,last time I had the mech at that angle was when I chopped a chain a couple of links too short not paying attention
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Re: Gearing problems?
Ah, I see the problem!
The solution is to move house thereby getting a different LBS
The chain is routed through the jockey wheel cage incorrectly! Look at the first photo, the chain should run to the back/outside of the cage. That's why it isn't engaging the guide jockey wheel. The rattling noise is from the chain rubbing over the tab that sits in that part of the cage.
Hopefully the chain is fitted with a master link so it's a quick job to split, rethread and put back together.
The solution is to move house thereby getting a different LBS
The chain is routed through the jockey wheel cage incorrectly! Look at the first photo, the chain should run to the back/outside of the cage. That's why it isn't engaging the guide jockey wheel. The rattling noise is from the chain rubbing over the tab that sits in that part of the cage.
Hopefully the chain is fitted with a master link so it's a quick job to split, rethread and put back together.
Better weight than wisdom, a traveller cannot carry
Re: Gearing problems?
Well spotted Bob,, correct routing:whitestone wrote: ↑Thu Oct 10, 2019 1:37 pm Ah, I see the problem!
The solution is to move house thereby getting a different LBS
The chain is routed through the jockey wheel cage incorrectly! Look at the first photo, the chain should run to the back/outside of the cage. That's why it isn't engaging the guide jockey wheel. The rattling noise is from the chain rubbing over the tab that sits in that part of the cage.
Hopefully the chain is fitted with a master link so it's a quick job to split, rethread and put back together.
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Re: Gearing problems?
Chain derailment prevention plate eh? So that's what it's called.
Not that I've ever routed a chain incorrectly, no, not me
Not that I've ever routed a chain incorrectly, no, not me
Better weight than wisdom, a traveller cannot carry
Re: Gearing problems?
Nor I, honestwhitestone wrote: ↑Thu Oct 10, 2019 1:46 pm Chain derailment prevention plate eh? So that's what it's called.
Not that I've ever routed a chain incorrectly, no, not me
Re: Gearing problems?
Putting mine back on properly was on the list of jobs to do today, but when I went to do it I had actually fitted it the right way for once.
Re: Gearing problems?
Try a goat link too if there isn't one fitted
I had similar set up (but with a 44t Cassette) and I think it helped get the mech in a better position
certainly much less B screw adjustment needded
I had similar set up (but with a 44t Cassette) and I think it helped get the mech in a better position
certainly much less B screw adjustment needded
2924 miles per Gallon
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Re: Gearing problems?
I’ve just dropped the bike off at my LBS. He said straight away that the chain was far too short! Fitting a longer one should do the trick, but as this sized cassette is right on the limit of that mech’s capacity, it may also need a mech extender.
I’ve just sent him a message to ask him to check if the chain is routed properly.
I’ve just sent him a message to ask him to check if the chain is routed properly.
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Re: Gearing problems?
It should not need a mech extender.Max Effort wrote: ↑Thu Oct 10, 2019 4:05 pm I’ve just dropped the bike off at my LBS. He said straight away that the chain was far too short! Fitting a longer one should do the trick, but as this sized cassette is right on the limit of that mech’s capacity, it may also need a mech extender.
I’ve just sent him a message to ask him to check if the chain is routed properly.
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Re: Gearing problems?
To be fair, he did say that. It’s no problem if it does though. I’d rather pay a bit extra to get things running smoothlyScotRoutes wrote: ↑Thu Oct 10, 2019 4:14 pmIt should not need a mech extender.Max Effort wrote: ↑Thu Oct 10, 2019 4:05 pm I’ve just dropped the bike off at my LBS. He said straight away that the chain was far too short! Fitting a longer one should do the trick, but as this sized cassette is right on the limit of that mech’s capacity, it may also need a mech extender.
I’ve just sent him a message to ask him to check if the chain is routed properly.
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Re: Gearing problems?
I was gonna say that the chain looks too short... Good you said it before me cos you're smarter and wiser (see what I did there)... check the chain Max Effort... should be able to snap it csrefully at the removable link section... if it doesnt remove then a plier at an angle is your friend and if still not then a chain link tool thingy...middleagedmadness wrote: ↑Thu Oct 10, 2019 1:21 pm Is your chain the right length ,last time I had the mech at that angle was when I chopped a chain a couple of links too short not paying attention
You said bout local bike shop: doesnt mean it was a competent mechsnic nor they didnt just make an honest mistake... but thay angle doesn't look right and shoukd have at least some sort of slackness in that mech...
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Re: Gearing problems?
Nah ,I just don't have a great attention span so got really good at remembering when I've f#cked up so I don't do it againredefined_cycles wrote: ↑Thu Oct 10, 2019 9:03 pm
Good you said it before me cos you're smarter and wiser (see what I did there).....