Chain Stuck Between Gears
12-07-12, 01:50 PM
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Chain Stuck Between Gears
Hi, and thanks for viewing this thread. I hope someone can help me.
My chain got stuck in between two of the gears on the 'pedal side'.
image1
I've tried pulling hard on the chain and trying to wedge the chain out between the gears, but I think it's stuck. Any more force and I'm afraid I would warp the gears (even more) or bust the chain.
My only other idea is to separate the individual gears. This way, the chain would be able to simply fall out from between the gears. My problem with this is that I don't know how to (or if it's even possible). Below are pictures with the things holding the individual gears together (pictures from front and behind). I've tried using Allen wrenches (both customary and metric) but the groove in the thing holding the gears together is too shallow and rounded to get a grip.
image2
(In the above picture, the gear cover is on. I took it off when trying the Allen wrenches)
image3
Thanks again for any help!
My chain got stuck in between two of the gears on the 'pedal side'.
image1
I've tried pulling hard on the chain and trying to wedge the chain out between the gears, but I think it's stuck. Any more force and I'm afraid I would warp the gears (even more) or bust the chain.
My only other idea is to separate the individual gears. This way, the chain would be able to simply fall out from between the gears. My problem with this is that I don't know how to (or if it's even possible). Below are pictures with the things holding the individual gears together (pictures from front and behind). I've tried using Allen wrenches (both customary and metric) but the groove in the thing holding the gears together is too shallow and rounded to get a grip.
image2
(In the above picture, the gear cover is on. I took it off when trying the Allen wrenches)
image3
Thanks again for any help!
12-07-12, 01:52 PM
#2
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Put some kind of oil on it and pry it up.
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Fred "The Real Fred"
Fred "The Real Fred"
12-07-12, 03:21 PM
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Usually when this happens the chain has one rivet slipped under the inside of the outer ring. It spread the rings as it slid in, but now is sort of latched. With removable rings it's sometimes necessary to loosen the bolt so the rings can spread. In your case use a small pry bar (tire levers, or a screwdriver often work for this) to gently flex the rings apart just enough to release the chain. Place the pry bar on the side away from the mounting bolt so you can get the most flex without bending the ring.
In some cases, you can use your thumb to push the trapped pin inward and free it from under the outer ring, but it takes decently strong thumbs.
BTW- you really need some chain oil, and not just because I sell it.
In some cases, you can use your thumb to push the trapped pin inward and free it from under the outer ring, but it takes decently strong thumbs.
BTW- you really need some chain oil, and not just because I sell it.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
12-07-12, 03:24 PM
#4
Banned
Open the chain and replace it, rust says its past due.. then bend the chainrings in shape again
or just toss the whole thing, upgrade, and start with new drivetrain parts, they have a wear life.
new gears in the back too ,. with the new chain
or just toss the whole thing, upgrade, and start with new drivetrain parts, they have a wear life.
new gears in the back too ,. with the new chain
12-07-12, 03:56 PM
#6
Bicycle Repair Man !!!
Looks like a riveted crank so loosening the inner ring is not an option... a little gentle prying should free that chain which then needs to be replaced and depending on the waer to the freewheel / cassette... that may need to be replaced as well.
And for the love of all that is good and holy... get in the habit of lubing and wiping down your chain regularly.
And for the love of all that is good and holy... get in the habit of lubing and wiping down your chain regularly.
12-14-12, 08:31 AM
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Using a flat-head screwdriver to gently pry the sprockets apart and pliers to pull the chain, I managed to get it dislodged.
Thanks to all for your advice. I examined my bike with a discriminating eye and saw many things that needed to be tuned or replaced (e.g. misaligned gears/derailleurs, and dirt and rust everywhere). Thanks for your resourceful website!
Thanks to all for your advice. I examined my bike with a discriminating eye and saw many things that needed to be tuned or replaced (e.g. misaligned gears/derailleurs, and dirt and rust everywhere). Thanks for your resourceful website!
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