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Hey guys, I have a problem...
Anonymous 04/19/14(Sat)14:03 UTC+1 No.652744 Report

Hey guys, I have a problem with my derailleur.

I've noticed that it's become kind of crooked, and the upper pulley isn't properly aligned with the chain, causing a rumbling sound and making the chain shake when I ride.

Is there a way to fix it myself or do I need to have the whole thing replaced? Can you use the screws to align the upper pulley with the chain?
>>
Anonymous 04/19/14(Sat)14:14 UTC+1 No.652746 Report

http://sheldonbrown.com/derailer-adjustment.html
>>
Anonymous 04/19/14(Sat)19:05 UTC+1 No.652811 Report

>>652744
1. Your chain is filthy, what was the last time it was cleaned and lubed?
2. What was the last time you checked chain stretching/wear? Betting you never have and it's worn out.
3. Considering I'm not getting a good impression of your bike maintenance skills, I'm thinking your drivetrain in general has been sorely neglected so I'm not surprised you're having problems.
>>
Anonymous 04/19/14(Sat)19:08 UTC+1 No.652813 Report

You're using to much oil on your chain.
>>
Anonymous 04/19/14(Sat)20:26 UTC+1 No.652835 Report

>>652744
if its an old rear derailleur it probably has some lateral play (in the lower jockey wheel housing) and should b replaced a shop could tell you for sure would take like 3 min to determine.
>>
Anonymous 04/19/14(Sat)22:20 UTC+1 No.652877 Report

>>652811

>mfw I've been riding bikes for 16 years and haven't done any of that

I bought the bike last July. I oiled the chain yesterday. I doubt it could've worn out after a couple of months.

>>652835

I got hit by a car while riding it in August, haven't really used it since. It fell on the left side, though, could the derailleur be damaged that way?
>>
Anonymous 04/19/14(Sat)22:25 UTC+1 No.652878 Report

>>652877
>16 years
>Never cleaned or lubed anything
>Never changed the chain

Fuck fuck fuck fuck fuck fuck fuck fuck fuck
How has your bike not murdered you in your sleep for neglect yet?
>>
Anonymous 04/19/14(Sat)22:57 UTC+1 No.652895 Report

Well, my previous bike lasted me more than 9 years, the frame cracked and I thought welding it together would be a waste of time.
>>
Anonymous 04/20/14(Sun)00:21 UTC+1 No.652930 Report

>>652895
bikes are not like cars, it won't just break down one day because you never oiled it (ok well it could but the likelihood is much lower compared to cars). bikes just slowly get shittier and shittier if you don't take good care of them, and it's so slow that you don't notice. but if you replaced the chain with a nice new one, properly cleaned everything, adjusted the tension of the derailleur and pumped your tires up to proper pressure - all of that about half an hour's work, maybe an hour - you'll notice the difference immediately, guaranteed.
>>
Anonymous 04/20/14(Sun)00:25 UTC+1 No.652933 Report

>>652877
i'd take it in for a tune up at a bike shop, same thing happened to me when i got hit by a car. the derailer and gears were out of sync by the time i was well enough to ride it again.

a tune up should not only fix the derailer but they should also give you a heads up if anything else got damaged.
>>
Anonymous 04/20/14(Sun)00:44 UTC+1 No.652946 Report

>>652744
first thing I would suggest is checking the hanger alignment. shouldn't be a problem since you've got a new *enough* bike to have sacrificial hangers. lbs or a co-op or a bikey friend could help you out with that.
>>
Anonymous 04/20/14(Sun)00:58 UTC+1 No.652955 Report

>>652877
>16 years and haven't done any of that
Not sure if serious, or just filthy casual.
>>
Anonymous 04/20/14(Sun)05:09 UTC+1 No.653020 Report

>>652955

>rides 10 miles a year
>my bike is maintenance free guise!
>>
Awesome Funposter 04/20/14(Sun)05:11 UTC+1 No.653022 Report

>>653020
>this is what hipsters actually believe
>in 70 years they dig their fixies out of the garage and they still work as bad as they do today
>my bike is maintenance free guise!
>>
Awesome Funposter 04/20/14(Sun)05:40 UTC+1 No.653039 Report

>>653022

You're not fooling anyone GW.
>>
Anonymous 04/20/14(Sun)07:19 UTC+1 No.653069 Report

>>652946
>>652744
This. Non-vertical RD cage and chain popping on the jockey wheels sounds like a bent hanger. Other symptoms could include auto-shifting and having the chain fall off the low gear into the spokes. You might be able to bend it back and continue to use it for a while, but you'd ought to order a new one. They cost about $20 and come off with two or three bolts.

>>652811
My chain looks at least that dirty pretty much unless I clean it after every single ride. I'm talking about a mountain bike, of course. Dust and shit gets everywhere, mixes with the chain lube, and makes it look black and greasy really fast. I wipe it off, re-lube it, and wipe off the excess about every two or three rides, and clean it thoroughly with a mild degreaser every month or two. Am I doing it wrong?
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