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Questions tagged [sprocket]

A sprocket or sprocket-wheel is a profiled wheel with teeth that meshes with a chain. Bicyclists normally call the front sprocket attached to the cranks the "chainwheel" and the rear sprockets either "sprocket" or "cassette."

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Moving rear sprocket outward

I'm trying to fit a Veer Split Belt to my old city bike. However, I have noticed that the front and rear sprockets are not well aligned. I can't move the front sprocket inwards, so the only way to ...
Stücke's user avatar
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1 vote
1 answer
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Chain / Chain wheel: D type vs sealed type

I have spent a good 30 minutes on this site but couldn't find anything pointing a clear idea. I bought a 26 inch, Dual suspension bike. It has a chainwheel of "sealed type." I asked the ...
PotatoGuy's user avatar
5 votes
4 answers
609 views

GRX 2x11 - what causes the chain to bounce significantly when shifting the cassette into a higher gear (smaller sprocket)?

I recently set up a new gravel bike with all new components, including a 2x11 GRX DI2 drivetrain. 31/48 and 11-36t. It has ridden under 600 miles and only seen rain once. It is accident free and has ...
jonatans's user avatar
3 votes
2 answers
111 views

How would i go about removing this gear cluster?

bike noob here. Looking to remove this freehub and I don't see the removal tool groves. I’m not sure how to remove this and I can’t seem to find any info on this specific one. The brand is Suntour ...
Tyler Martin's user avatar
1 vote
1 answer
52 views

Used mongoose BMX started having issues with rear sprocket not engaging when pedaling causing safety issue

I got a used Mongoose BMX for my son. I know when I was younger Mongoose was halfway decent. But now they kinda stink. Putting that lightly! Anyway the bike rode well at first, then after a flat tire ...
Stewart Spindlow's user avatar
2 votes
0 answers
141 views

Bicycle chain roller diameter size chart?

I'm digging for a while now, and can not find any helpful chart for chain roller diameters e.g. Shimano 8,9,10,11,12 speed. It differs of course depending on the manufacturer and the purpose. We know ...
guyfromthesun's user avatar
3 votes
3 answers
301 views

What are the replacement options for my Miche cassette?

I have a sprocket with chipped teeth. It's on a Miche Primato ten-speed cassette ("Fac Michelin PRIMATO 12/25", in the catalogue) with a Campagnolo Mirage groupset. The hub is labelled ...
Daniele Procida's user avatar
7 votes
1 answer
710 views

Should the chain diverge that much?

I bought a new bike that has: 11-speed SRAM NX cassette. Single chainwheel: 36 SRAM NX teeth 11 / 42 cog. KMC X11 chain with quick-release. Rear derailleur: SRAM NX 11-speed. Anti-derailment ring. ...
WoJ's user avatar
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4 votes
2 answers
253 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
1 answer
106 views

Gear combinations for 3×7 Raleigh CHESTER 21 2022, frame size 50 cm

Continuing Which gears combinations shouldn't be used? and How do I know what gear combinations should work without chain rasp on front derailleur?, which are rather generic questions and answers, ...
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5 votes
2 answers
293 views

Should a track cog's asymmetrical lock ring be installed so the flat end faces the cog?

My bike has always had a flip-flop hub installed. I recently decided I would like to try using the fixed gear side. I purchased an All-City 17T x 1/8" Track Cog and an Origin8 Standard Track Cog ...
Will Haley's user avatar
0 votes
1 answer
112 views

MTB chain always jump after putting a new chain. It only skips on 4th and 5th gear cogs only

I replaced my old chain with a new one. After changing the chain I notice that standing pedaling uphill and flat surface in 4th or 5th gear the cogs will engage/disengage. But when I put the old chain ...
larp's user avatar
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3 votes
2 answers
829 views

Convert the number of teeth in a chain-based drive train to the number of teeth in a gates-based drive train

If I'd convert my drivetrain from a chain-based drivetrain into a belt-based drivetrain and I'd want to keep the exact same transmission, how do I know the required number of teeth for the front belt ...
Stücke's user avatar
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2 votes
1 answer
149 views

What tool(s) are required to remove a Rohloff sprocket?

To remove a Rohloff sprocket, I need this Sprocket Remover Tool: Do I also need the lock ring tool? If not, what is the lock ring tool required for?
AhseemHermanson's user avatar
3 votes
1 answer
989 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
7 votes
4 answers
1k views

Guidance to replace cassettes sprockets "individually"

I've seen that sprockets were sold separately (or by "groups/spiders"). Given the small sprockets wear faster than the big ones, it could make sense to replace them at higher interval than ...
Rеnаud's user avatar
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9 votes
2 answers
3k views

10-teeth/9-teeth Sprocket Efficiency Losses

Almost each time 10T (or 9T) sprockets on cassettes are mentioned, there are remarks about efficiency losses when such sprockets are used. But I haven't found quantified information about these claims....
Rеnаud's user avatar
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0 votes
0 answers
190 views

JC Higgins Super Deluxe history?

JC Higgins History Question. After my Mom passed I picked up her JC Higgins Super Deluxe. I have little history on the bicycle. I have a serial number and Model number from the plate. Model 505 276 ...
Steven's user avatar
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5 votes
3 answers
691 views

Improving the Efficiency of a Derailleur: Enlarging the Cassette Sprockets to reduce Friction

For reasons that I have not yet understood, the smallest sprockets with only 11 teeth have prevailed in derailleur cassettes of road bikes, which leads to a very strong deflection of the individual ...
Dave's user avatar
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5 votes
1 answer
537 views

Gates Belt Drive+Rohloff - What rear sprocket do I need to help me get up hills and mountains better?

Hi I'm new here. I'm the proud owner of a Koga Worldtraveller Signature 2.0 with Rohloff and Gates belt. I have a 50t front chainring and a 19t rear cog with a 120t beltdrive plus Schwalbe Almotion 28&...
Joseph's user avatar
  • 51
3 votes
2 answers
2k views

What is the maximum force that an average bicycle chain sprocket can withstand?

I want to use bicycle chain sprockets for a non-bicycle related project and I'm trying to figure out what is the maximum torque I can apply. I did a quick calculation taking a real life example - I ...
php_nub_qq's user avatar
3 votes
1 answer
472 views

Why are there multiple chain whip styles when cogs can take out-of-plane forces?

Chain whips on the market can be classified into ones: suitable for 1/8"-wide (fixed-gear) chains, such as Park Tool SR-18.2, suitable for 7, 8, 9, 10, 11?, 12? sprockets, suitable for 7-11 ...
Sam7919's user avatar
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0 votes
2 answers
4k 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
5 votes
3 answers
2k views

How do I remove the rear sprocket from a Gates Belt drive system

first question at this site. Hoping to get advice. Like many others, I am trying to learn how to service my bike, but when you get stuck.... I used a strap wrench and a cassette tool and I ...
Tom De Vries's user avatar
3 votes
4 answers
2k views

Copper grease on freehub when mounting sprocket?

Do you put copper grease (or something else) on a freehub directly before sliding the rear sprocket on? I put a light coating on by habit when fitting just because I don't like the idea of bare metal-...
2e0byo's user avatar
  • 283
5 votes
2 answers
424 views

Compound for freewheel locking sprocket threads

I have an oldschool SunTour 6-speed freewheel, where the smallest sprocket screws on the freewheel body to lock the larger sprockets in place. It's a normal right hand thread, so as you pedal in the ...
Deeq's user avatar
  • 53
0 votes
2 answers
104 views

I am thinking about changing my drivetrain to a 1xN. Do I need a new chain?

I am think about changing to a 1xN drivetrain, and I was wondering if I needed to change the chain as well.
Keyin Liu's user avatar
  • 231
3 votes
1 answer
146 views

If my max cog is 50t and I got a 52t cog

Hello I just bought a ltwoo groupset on ebay because I want to go cheap for my first ride since I'm not sure if I will be riding a lot. I went on the ltwoo website later on and found on that their max ...
Trung Nguyen's user avatar
0 votes
1 answer
183 views

Is my bike safe to use if cogs and crank is not that aligned?

Hey guys is it fine if my freewheel bike which is single speed is not that straight with its chain line, because my cogs and crank arent that straight but it is also not that far, im thinking if it is ...
Jebs Jebs Santillan's user avatar
0 votes
1 answer
1k views

How do I use a freewheel as a single-speed?

Can I disassemble a free wheel sprocket and use it as a single speed sprocket or I have to buy a single speed sprocket?
andy hyacinthe's user avatar
1 vote
2 answers
131 views

Can no longer shift to lowest gear

I recently worked on my derailleur a bit to fix some issues in high gears, however, now I can no longer shift down to my lowest in the cassette when in either crankset. I have tried the L screw at ...
Harry Pedalson's user avatar
0 votes
1 answer
176 views

My rear wheel is wobbling much after around 3 months of use. Is there any fix that i could do it or should i replace the wheel?

So i checked the few available solutions. But in my case when I hold the wheel and shake it sideways it is not wobbling it is firm. But when I ride I can see the tyre wobbling and it looks like the ...
Bharath Raj's user avatar
1 vote
0 answers
172 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
3 votes
1 answer
1k views

carbon gates belt drive . need to have lower gears to get up steeper hills. best options

I'm planning to go on a long cycle this year and that last 20k is up a steep incline. I noticed i had to walk up the inclines that were steep and i thought i would have got a lot further if I had one ...
padjo's user avatar
  • 31
3 votes
1 answer
2k views

Chain skipping on upper pulley of rear derailleur

Background: I have a full suspension mountain bike with SRAM GX Eagle components. I snapped my chain recently, and replaced it with a new one of the same model. Made sure to size it the same as the ...
user2774695's user avatar
2 votes
2 answers
329 views

Using a cassette and derailleur with different sprocket/cog specifications

I am trying to make a cheaper (500ish) bike work with a Tacx Flux (2018 version). According to their website, the Tacx Flux only supports 8-11 speed cassettes, but my bike has a 7 speed freewheel (14-...
pokemist's user avatar
13 votes
1 answer
4k views

Was I just sold a used cassette?

I just bought this Shimano HG41 cassette and I noticed that not all of the teeth and dips between them look the same. You can easily see this in the image that I included if you compare the teeth on ...
Jack N's user avatar
  • 321
22 votes
6 answers
6k views

Are single chainring mountain bikes usual?

I just bought my son a typical+ mountain bike in a typical Frech sports shop (a BTWIN 530 at Décathlon) and realized that it has only a single sprocket at the front, and 9 sprockets at the back: I ...
WoJ's user avatar
  • 1,113
0 votes
2 answers
127 views

Damaged cog while taking it off

Damaged my cog while taking it off. Is there any possibility of repairing it?
Nazar Pasternak's user avatar
6 votes
2 answers
1k views

How do I properly torque a track cog lockring?

I see a torque rating is stamped onto a lot of track cog lock rings: However, I cannot find a way to use a torque wrench when tightening the lock ring. All the tools I've found, like Park Tool's HCW-...
pbnj's user avatar
  • 163
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
7 votes
2 answers
1k views

How to remove this Mavic spoke cover from the rear wheel?

everybody How do I remove this spline cover from the rear wheel? I'm trying to replace a spoke, but I can't do so because the cover is blocking the way. I've tried using a flathead screwdriver to push ...
Alykin's user avatar
  • 103
1 vote
1 answer
787 views

How to disassemble pinned sprockets from a freewheel

I have a shimano freewheel like this one Picture taken from Cassette Removal & Installation I need to use separate sprockets from it but I'm not sure how to extract them without causing any ...
php_nub_qq's user avatar
2 votes
2 answers
4k views

single speed freewheel Shimano SF MX 30 vs Shimano SF-1200

What is the difference between: single speed freewheel Shimano SF MX 30 and Shimano SF-1200 ? Why those freewheels donesn't appear on shimano website? P.S. From the pictures it's clear that the ...
Michael D's user avatar
  • 818
1 vote
2 answers
956 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
3 votes
2 answers
606 views

Freewheel threading on Miche flip-flop hub

I'm currently building a parts list for a new single-speed bike. In the process, I came across a nice looking flip-flop hub from Miche: The "Primato Pista/Strada" I figured that adding the fixed ...
Markus's user avatar
  • 131
0 votes
1 answer
102 views

1994 Giant Iguana front sprocket

I have a 1994 Giant Iguana. The teeth on the front sprocket are significantly worn and the middle sprocket is cracked. Are there replacement sprockets for this bike?
DonM's user avatar
  • 1
3 votes
1 answer
145 views

How can I not break my sprocket next time

My sprocket was doing loud noises and when I looked at it, it looks like this https://i.stack.imgur.com/iciYj.jpg I bought a new sprocket but I want to know, what can I do to avoid these types of ...
Alhmęd Fasad Riño's user avatar
1 vote
0 answers
28 views

Bicycle chainring dropping/ making a click sound. Help! [duplicate]

My bike is a bit dirty but can someone explain whats happening and a possible fix for this issue? a video with the issue on imgur
Alhmęd Fasad Riño's user avatar
2 votes
1 answer
364 views

Schwinn Johnny Pro Stationary Loud Noise Near Sprocket

I have an older Johnny Pro. All of a sudden it began making a loud noise, like a bang, from the area near the sprocket. this occurs approximately every 1.5-2 revolutions of the pedals. I have ...
kathleen carey's user avatar