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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
3 votes
1 answer
1k views

Which replacement sprocket and chain ring should I get for a Shimano Alfine 8?

I have a Charge Mixer bike with, I believe, a Shimano Alfine Inter-8 internal hub gear system. Recently the chain started to creak so I decided to change it. I bought a KMC X9 chain as Shimano appear ...
Jamie Kitson'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
1 vote
2 answers
1k views

Customizing the smallest cog

I am running on a Shimano Tiagra 10 speed (CS-HG500-10) (12T-28T) and (50-34T front). I'd like to change the smallest cog (12T) to something smaller, i.e., 11 or even 10, to improve my sprints. Is ...
Amir's user avatar
  • 397
6 votes
2 answers
3k views

Lockring spacer Shimano cassette

I recently purchased and am now installing a 9 speed Deore XT cassette sprocket (CS-M770) on a Specialized Stumpjumper FSR XC. It's replacing a CS-HG50-9, and is mounted on a Shimano rear hub (FH-M525)...
Jeff's user avatar
  • 11k
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
8 votes
3 answers
3k views

What does marking like "aq/ar" on the sprocket mean?

Shimano sprockets are marked with short strings like "aq/ar", "bg", "as/au/be" and others. For example, "bj bk" can be read on the image below: It looks like they mean the hyperglide series to which ...
Konstantin Shemyak's user avatar
5 votes
1 answer
7k views

Which jockey wheel on top?

I've just bought a new pulley set for my rear derailleur but do not know which one goes on the top (nearest derailleur) and which one goes on the bottom. The wheels have arrows on them;vI suppose they ...
Belgian rider's user avatar
9 votes
5 answers
133k views

50/34 vs 52/36 crankset for 11-32 cassette (shimano 105 5800FC)

Following up on this enlightening answer, I would like to know the differences between 50/34(compact), 52/36(mid-compact) and 53/39 (standard). The cassette I am choosing is 11-32 to give me a wider ...
Sukhi's user avatar
  • 193
3 votes
1 answer
14k views

Can I replace only the smallest cog on my rear cassette?

I currently have a 12-30t rear cassette which needs replacing. While I'm at it, I really want to switch to an 11 tooth to get the extra 9% in top speed. But the problem is, even the most expensive (...
Michael's user avatar
  • 1,249
2 votes
1 answer
4k views

Gears jumping/slipping from the rear cogset on a new bike

Its been 1 month since I have bought my new MTB (Kross globate 1.1) with 18 gears (shimano).. Now the problem is chain has slipped twice while riding. First time my speed was around 25kph and second ...
mannuscript's user avatar
2 votes
1 answer
255 views

How is the quality of alloy sprocket 10 speed sprocket?

I saw at ebay, 10 speed cassette compatible with shimano, it's very light 103 grams, but the material is alloy with ceramic coated, it says, the cassette can be used up to 3000K, is it true? or may be ...
Rick Ant's user avatar
  • 919