Questions tagged [chainring]
The cogs (gears) at the front of your drive chain, connected to the cranks.
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What should I upgrade first?
I just got a new basic hardtail bike. I want to get better, and it’s not the best bike, so I want to upgrade it. I was thinking about changing the gear set up to 1 and 11 speed rather than 3 and 8 ...
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What is the torque needed for chainring bolts?
I have a bike that is no longer in production, but it has a standard drivetrain (FSA). I had some shifting issues the past couple days, and to my surprise when I did a clean/inspect, three of the 5 ...
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How can I find out the number of teeth on each cog for cassettes and chain rings?
I am trying to write an algorithm that will give me the number of unique gear ratios given information about chainring(s) and cog pair. To do this though, I believe that I need to know the number of ...
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Can I (easily) change this chainring?
A while ago I bought a fairly cheap bike - a Pinnacle Lithium 1 from Evans Cycles in the UK. It's dangerously close to being a BSO, but I really enjoy riding it and have no regrets about buying it.
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What can cause the chain to stay attached to chain-ring at bottom causing it to ride up and jam in the frame ("chainsuck")?
I'm looking for possible/likely causes of an issue with my front chain-rings on my bike. It's a 3x8 setup and the problem is worst on the smallest front chain-ring, and worse again when combining ...
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What's the correct position to assemble eliptic (Biopace, Rotor, etc) chainrings?
If you take a regular, "classic" road chainring (130bcd, five arms), you have five possible positions to assemple it in the crank arm. This can even be used to "rotate" between different positions ...
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Are narrow-wide single chainrings compatible between 9, 10, 11 and 12 speed?
I am planning to convert my bike to 1x12 setup. Since it is an old bike I want to keep it as low budget as possible. I am looking to keep my existing BB an crank. I have read multiple posts about ...
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What is an alternative to Shimano FC-5700 52B Chainring?
The tooth of my outer chainring broke off so I need a replacement for it.
Problem is, it's an old crankset FC 5700 and I can't find anywhere that sells the same chainring. I don't want to replace my ...
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Can I change my large chainring without changing the entire crank
I am running a 2x10 Deore M4100 set up on my current bike. My crankset is 36/26 T and my cassette is 11-42T.
I want to make this bike faster, and I want to know if I can just replace the upper ...
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Bike chain "skipping", but only when not continuously pedaling
So I put together a bike a couple months ago. New chain, new chainrings (3 speeds), and new rear cassette (8 speeds). Used front and rear derailleurs from a bike co-op. The free wheel is old but seems ...
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Chainring Spider Mount Types
I have been wondering about the different types of spider (or direct mount chainrings) to crank arms and was surprised that I could not find anything spot-on about it.
I kind of know that BMX direct ...
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Replace a 52/36 crankset with 50/34
I'm looking at purchasing a new bike with a 52/36 crankset on a 11-32 cassette. I've grown accustomed to a 50/34 crankset on the same cassete, and for the type of riding I do in the PNW (300-400ft ...
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Freewheel replacement for a touring tandem bike
I have an older touring tandem bike that we use to go on long trips. The gear setup is 3x7. I noticed that we hardly ever use the smallest 3 cogs on the freewheel (of course together with the largest ...
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Can I replace a middle chain ring with one with different number of teeth?
I recently upgraded my wife’s bike with a Shimano XT triple crankset. The number of teeth is 44.32.22t. However, the middle chainring on the recent XT crankset is carbon-reinforced, and I’d prefer not ...
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Max difference between top and bottom chainrings
(similar question: Front Derailleur Chainring Size Tolerance)
I am trying to understand the possibility of maximum difference between chainrings on road bikes. I currently have Shimano GRX 48/31 (...
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What is the purpose of the divots on Shimano Altus 2x chainrings?
Pictured is the Shimano Altus 2x crankset chainring (bike from which it comes was a 2019 model so I assume it may be one generation old, though the current chainring generation has the same ...
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Converting triple crank to single or double
I got triple crank (44-32-22) and 3x9 speed drivetrain. What will I need and is it possible to remove some of the chainrings and convert the crank to single or double?
Will I need new parts or ...
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Are Shimano R7000 chainrings (50 and 34T) compatible with Ultegra R8000 crank?
I need new chainrings due to slipping chain and decided to replace them. I currently have an Ultegra R8000 Chainset and don't want to replace the crank arms (as it is really expensive). Ultegra is ...
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At what point does one need to replace a chain ring on a mountain bike?
The large chainring on my mountain bike is missing a number of teeth on one side (apparently the side I like to go over rocks on). Is it harmful to the drivetrain to ride without these if I'm not ...
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Modify a front derailleur cage to allow for non-round chainrings like Biopace or Rotor?
I am repairing my road bike after a mishap where it swallowed the rear derailleur around the cassette and into the front derailleur. As part of the rebuild, I'm swapping out the badly worn old ...
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Are granny gear chainrings supposed to have directed teeth (i.e., be non-flippable)?
I was replacing a worn-out 34-teeth chainring on my MTB crankset. In the course of the work, I detached the granny gear chainring (22-teeth).
Compared to the big chainring, which has all these ramps ...
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Chain length differences between 1X and multi-chainring setups
When determining correct chain size, one common technique is to install the chain (without passing it through any derailleur) onto the largest front and rear sprockets. Then, determine the shortest ...
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Why would a manufacturer change chainring sizes drastically between years?
A friend was just showing me the 2010 Cervélo S2 specs, as well as the 2011 S2 specs, and the Ultegra line, at least, changes from a 53/39 chainring set in 2010 to a 50/34 set in 2011. This seems like ...
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What is the easiest to upgrade my chainrings from a double to a triple?
I have a 2007 Specialized Tarmac Pro Double and I need some better gearing. I am doing more hill climbs and I feel that I need at least two lower gears than I already have. What would be the most ...
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Replacing an FSA chainring
I would like to replace my chainring for a bigger one.
I looked up my bike specs and it comes with a FSA CK-316BT, KSS, 42T chainring. I couldn't find any information about this, so I don't know how ...
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Does effort require to pedal depend on the gear ratio or the gear inches?
I have a 20x1.75" 6-speed folding bike with 52x14-28t drivetrain. Even with the gearing at 52x14, ~3.71 ratio, I can still pedal uphill.
I also have a 700x25C fixed gear with 49x17t gearing or ~2.88 ...
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How do I get a new chainring when my bike is so old, the manufacturer doesn't have the chainring (or crank) I need
I need a new chainring but when I called the manufacturer they said my model is so old they don't have the part any more.
I've attached an image of the crank from the manual and a photo from my bike. ...
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Are 52/34 chainrings compatible with an 11/32 11speed cassette
Im thinking of buying a Scott Addict 20 supplied with Ultegra 52/36 rings and 11 speed 11/30 cassette. Could I change this to 52/34 rings and 11/32 cassette?If not would 52/34 and 11/30 be a ...
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Updating Shimano R8000 chainset from 50/34 to 50/39
I've seen this question about making the same change (50/34 to 50/39) on a Shimano Sora chainset, but I am asking specifically about Ultegra R8000.
I have a bike with Ultegra R8070 (Di2, hydraulic ...
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Ideal distance between chainring and chain stay
I am building a single speed bicycle, and I have most of the drivetrain parts:
Rear hub
18T rear cog (40-40.5mm ideal rear chainline -- wheel undished)
1/8" chain
crankset with 40T chainring
I used ...
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What kind of tool will loosen this nut holding a chainwheel on a one piece crank?
Can someone tell me how to remove this nut that is holding the chainwheel in place on this one piece crank? In the picture below, the red arrows are pointing to three slots in the nut that a tool ...
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How do I change the granny gear on a cheap Walmart mountain bike?
I have a cheap ($100) 26" Walmart mountain bike (Hyper Summit) that has a triple chainring (24,34,42). It appears there is no easy way to remove the granny gear since it has what looks like some type ...
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Is the same effort required to maintain a set speed using different sized chainring / cog combinations with same ratio
If I have a bike with the same cranks setup with a 36t (chainring) / 12t (cog) ratio and the same bike setup with a 48t (chainring) / 16t (cog) ratio, would the effort required to maintain a set speed ...
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Why does the chain tension vary as pedals are turned?
I have a new single-speed bike (after purchase this year, it was unused in a garage for a few months), but as I turn the pedals, the tension in the chain varies noticeably.
What should I check, one-...
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Chain drops when shifting up a gear at the front?
I've just gotten a new bike and run into a problem. When shifting from a smaller cog to a bigger one in the front gears, the chain consistently drops.
The problem happens regardless of whether I'm on ...
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Differences between FC-RX600-11 and FC-RX600-10?
Is there any documented difference between 10- and 11-speed GRX cranksets FC-RX600-10 and FC-RX600-11?
Net search gives "closer chainring spacing", but I'm looking for a proof.
Also ...
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What's a good single chain ring size for a 7s 12-28 cassette for better hill climbing?
I have a Decathlon Triban RC100 road bike with a 7 speed 12-28 cassette and a 44t single chain ring crankset. Since I live in a city with a lot of hills and use this bike to commute and carry weight ...
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Why does the 'try other positions on your square taper spindle' trick work in reducing chainring wobble?
Example here:
Does this mean that there is a manufacturing defect in the spindle/BB/crank? Or damage? Or is it just the nature of these things that there will be one ...
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Can't find any replacement original chainrings (SG A-52-42-30) . What can I use instead?
I have an early 2000's Giant OCR 2 roadbike (3x8 speed) with worn out chain rings on the Shimano Sora FC-3303 triple crankset. The original rings are the SG A-type, 5 bolt, 130 mm BCD in 52T-42T-30T ...
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How to measure chainring / cog wear?
Other than attempting to estimate whether a chainring or cog is worn and needs replaced by eyballing it, is there any way to measure the wear on chainrings or cassette cogs so you can determine ...
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Chain Ring Bolts
Having a strange problem removing my chain ring bolt. problem is there is nothing to hold the back piece with because its perfectly rounded/flat, so when i turn the front the whole piece rotates. what ...
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Changing from Shimano Road Double Chainset to Triple Chainset?
Road bike setup at the moment is:
Shimano Tiagra (9 Speed) Shifters / Front Derailleur / 52-39T Chainset / Short Cage Rear Derailleur / Casette 27-11T.
Will I be able to do a straight swap and ...
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BBB chainring will not fit
As a follow up from my previous question I decided to change my Campag Veloce 53T chainring. I bought a BBB 50T chainring. I tried to fit it over the weekend but it wouldn't fit.
I think the problem ...
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Minimum chainstay/crankset clearance
I have just finished to assemble a track bike (Cinelli Mash Parallax with Sugino DD75 crankset).
Here is a picture of the distance between the right chainstay and the crank spider. I am anxious by ...
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Alternative to tuning automatic hub?
I am contemplating purchasing an automatic gear hub, namely the SRAM Automatix. One of the criticisms leveled at this hub is that it shifts up too soon. The default settings can however be adjusted if ...
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'1 1/8' vs '1/2 1/8' chain/chainring
Some 1/8 chains and chainrings are sold as "1/2 1/8" and some as "1 1/8". What is the first number describing?
My understanding is that practically all modern chains have a 1/2 inch pitch.
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Cruiser bottom bracket is clicking and grinding
My Trek Pure Deluxe 3-speed cruiser has been making a clicking noise when riding for some time. The problem is faint, and is more felt than heard. However, it's been getting worse; it now makes a ...
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Are shimano 6700 and 6703 chainrings compatible?
I want to replace the chainrings of a group set Shimano Ultegra FC-6703. Unfortunately, I can't find the external chainring anymore. Can I use an external chainring FC-6700 (two-speeds) to replace an ...
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Do I need to replace my chain ring and cassette? Images attached
I know I should replace them if they "look like shark teeth", but I don't know what exactly what shark teeth look like. I know they don't exactly look new, but do they need to be replaced ...
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Chainring rubbing frame after replacing
I replaced my Ultegra R8000 inner chainring from 36T to 34T. After installing, I made sure there was enough clearance between the inner chainring and the chainstay and spun it to make sure all is good....
