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4 votes
2 answers
304 views

105 R7000 chain rubbing bigger sprocket when pedaling backwards

I am new to this so I wanted to know if this behavior is normal. When I pedal backwards and the chain is on the smallest sprocket I can see that the chain rubs for a second and then does a little jump....
notFake7's user avatar
0 votes
2 answers
5k views

Vibration feel on pedals

For a while, I am having a vibration feeling (and actually it vibrates) through my feet from chain. It is not because of front derailleur, I have just aligned them. There are no problems with rear ...
Yusuf Alper Şahin's user avatar
1 vote
0 answers
178 views

Can i use claris R2000 rd on 14-34T mega range sprocket?

I have sprocket 14-34T with mega range. I planned to change my old (maybe 1990's) shimano tourney rd to shimano claris R2000 medium cage. Some of my local bike shop said that i can replace with claris ...
Ferdy Ferdy's user avatar
0 votes
0 answers
51 views

What might be causing the faulty shifting on my bike?

I bought a used bike that has 8 speed cogs and 3 speed chainrings. The front shifts great but the back regularly fails on the 6th and 5th speeds. I know a bit about adjusting the shifters so I can say ...
Alexander Patrovsky's user avatar
5 votes
2 answers
602 views

Does too high "B-tension" increase wear

This answer suggests that having B-tension adjusted so that the chain sits far from the cogs increases wear. Can anyone cite a source that says that? Experimental evidence would be preferable, but a ...
T.C. Proctor's user avatar
1 vote
1 answer
6k views

My rear derailleur won't shift after up after 3rd cog

I just got a MTB bike thats been sitting in a garage for a couple of months. I tried the bike and found out that the rear derailleur(Shimano) wont shift after the 3rd cog . It shifts up to the 3rd ...
Amit Aalok 's user avatar
-1 votes
1 answer
557 views

It takes several clicks of the shifter to go from smallest cog to next biggest cog, and I get hit the four biggest cogs

When I try to shift from the smallest cog to the next biggest one, I have to shift three times before it moves. Click one and I see the cable tightening. Click two and nothing, and click three and ...
Noah Clark's user avatar
4 votes
2 answers
1k views

Diagnose grinding sound from single rear cog

I've got a '70s-era ten-speed road bike with (what I think is) a Huret Eco rear derailleur which shifts well, but for some reason a loud grinding sound emits from the rear of the bike when using the ...
errantlinguist's user avatar
3 votes
1 answer
4k views

Can't change into the largest sprocket on rear derailleur

I bought my first road bike recently, and I've noticed I can't change into the largest cog/sprocket on the rear derailleur because when I pull the shifter the chain is pushed into the side of the ...
Bendihossan's user avatar