Questions tagged [drivetrain]

Questions about a bicycle's drivetrain system, including the chain, gears, chainring, derailers, etcetera.

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Are freewheels compatible if they have the same number of sprockets and teeth?

I'm a novice to the cycling world and am wanting to learn to do my own maintenance, so I'm quite unsure of a few things. More specifically, I have a Dahon Eco C7 foldable bike that I got used and was ...
Iceape's user avatar
  • 123
3 votes
1 answer
82 views

Gun bluing chains

Is it possible to hot blue chains for rust protection? I surmise there would be parts of a bike chain that are made using hardened steel (e.g. rollers and pins). Would this process affect their temper?...
Gregory Leo's user avatar
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4 votes
1 answer
301 views

New chain coming off under torque

I replaced the chain recently - the new chain unships violently when I apply a moderate amount of torque, such as when setting off standing. As in, it comes off the big ring to the outside (i.e. away ...
BenTaylor's user avatar
  • 173
2 votes
1 answer
78 views

Unable to backpedal - jockey wheels on Campagnolo derailleur

I have Campagnolo Athena rear derailleur on my road bike. Never gave me a hint of trouble. Always kept clean and lubed. Never ridden in the rain or in dirty conditions. Yesterday I was not able to ...
gil's user avatar
  • 51
2 votes
1 answer
103 views

Does this chain seem short? Does this photo indicate any obvious drivetrain issues?

Addition. Yes this is the large-large chainring. The shifting is rather poor but I have not tuned high, low and B, tension etc. Thank you I recently moved to a larger chainring. The shifting seems ...
Moishe Rokach's user avatar
6 votes
5 answers
1k views

Training vs increasing gear ratio

I’ve just done a 1500km ultra cycling event, the lowest gear setup are front 30t back 40t. Along the journey there are many very long climbs that have more than 10% gradient. To conserve power I ...
Heykal's user avatar
  • 95
1 vote
1 answer
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How do I find replacement parts for my 1988 Suntour drive train?

I am resurrecting my old commuter which was basically a hard-tail MTB c 1988 with a 3 x 7 Suntour system. What's the least painful method (leaving shifters and derailleur intact) to replace the worn ...
Andy W's user avatar
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3 votes
2 answers
321 views

How can I increase ebike drivetrain reliability?

I'd like to improve reliability and have fewer problems with my drivetrain. What more can be done? I have an electric bike. I only ever use the six smallest sprockets on the 12-speed cassette, even ...
Tom Brossman's user avatar
1 vote
1 answer
40 views

Will 7-speed MicroSHIFT work with 9-speed shimano cassette?

I am building out a marketplace bike. It came with a MicroSHIFT derailleur and had a 7-speed cassette on it. I want to put a 9-speed shimano cassette on and still use the MicroSHIFT derailleur. Are ...
duhnlic's user avatar
  • 141
6 votes
1 answer
357 views

Is it acceptable to have some noise on largest sprockets?

There is some chain noise on the two largest sprockets on my friend's road bike. It's not a skipping noise and not on a cross-chaining gear. Do you think it is ok to have noise on these sprockets or ...
Ender's user avatar
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2 votes
2 answers
114 views

Compatibility of Microshift BS-M10 10 speed friction shifter with 11 speed derailleur?

As you know it’s very hard to get any modern bar end shifters right now. Unfortunately I love them. I have an opportunity to buy Microshift BS-M10 shifters which are meant for 10 speed shimano ...
guyfromthesun's user avatar
1 vote
1 answer
75 views

Can't keep new drivetrain from clicking and jumping

Recently I replaced crank, chains and cassette on my about 4 years old trekking bike. All parts are low priced Shimano parts, just as the ones I replaced. New crank and cassette have lesser numbers of ...
Erik's user avatar
  • 169
1 vote
0 answers
31 views

Odd chirpy noise, not chain or pulleys

So I have this familiar chirpy/twittery noise coming from drivetrain. It is under load on a down push on left crank, per revolution, lighter pedaling less noticeable. It's definitely not the usual ...
visionset's user avatar
  • 121
0 votes
1 answer
58 views

Lateral play in Crankset

I'm converting a ~2006 Scott Reflex to a 1x drive train, following the instructions on this video: Convert From Square Taper to Hollowtech II Bottom Bracket/Crankset - RJ the Bike Guy However I am ...
mapface's user avatar
  • 197
1 vote
3 answers
148 views

1x9 wide range cassette

I am curious to find out if anyone has figured out a viable solution for a 1x9 wide range eg; 11 to 46 or 11 to 50 setup without using a derailleur hanger extension? I have a FS mtb and am not too ...
Raymond Dunne's user avatar
1 vote
1 answer
230 views

What chains are OK for a Brompton?

What type of chain should I buy for my Brompton bicycle? The chain on my Brompton bicycle is stretched, and I would like to buy a replacement. There is no Brompton dealer in my country, so I'd like to ...
Michael Altfield's user avatar
8 votes
2 answers
917 views

How to determine chain length on a Brompton?

How can I determine the correct chain length on a Brompton bicycle? I have a Brompton bicycle with a non-standard (aftermarket upgraded) drivetrain. My chain broke and I lost some links, so I don't ...
Michael Altfield's user avatar
3 votes
2 answers
593 views

Shimano FC-RS510 compatibility with Shimano Ultegra 6800 and Shimano R7000

I have a BMC Granfondo gf01 (Rim Brake version) that was bought second-hand and came equipped with Shimano Ultegra 6800 (11-speed). Just the Crankset is different, being a Shimano Ultegra FC-6700 (10-...
João Fidalgo's user avatar
4 votes
3 answers
805 views

What do I need to consider when updating my Cannondale Topstone 4 groupset?

Last year I purchased a Cannondale Topstone 4, it was my first dropbar bike and I saw gravel as a safe do it all option as I got into cycling. So far I love my bike but as I've become a better cyclist ...
Katie A's user avatar
  • 49
1 vote
2 answers
84 views

Difficulties assessing whether drivetrain is worn

I've been a hobby mountain biker for a couple of years now. My bike is getting older and older (10+ years, still 26 inches) and I would like to do more maintenance jobs myself since it is not worth ...
Bike-Hummel's user avatar
1 vote
1 answer
217 views

I need help with total capacity of rear derailleur

I am unsure how to calculate the total capacity for a 1x drivetrain, I have 46t up front and 11-32 10 speed cassette. How can I determine which derailleur will work with this setup? E-mtb build. I was ...
Confused's user avatar
4 votes
2 answers
113 views

Recommended torque for belt port in rear triangle?

Last week while doing a bleed and rotor replacement on my Spot Acme, my bike accidentally fell from the stand with the wheels removed, causing a little damage to the pulley: I didn't notice this ...
parisminton's user avatar
1 vote
2 answers
71 views

Tandem creaking when captain pedals hard

I'm used to single rider bikes, but new to tandems. We have a specific creak that I (as captain) can also feel through the pedals. It's on every strong stroke of the captain's pedals, left or right, ...
Chris H's user avatar
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4 votes
3 answers
718 views

Inexpensive mods for decathlon 7 speed road bike

I have a Decathlon Triban RC 100 Flat bar. It is an entry level gravel/roadie that I have had for over two years now. It comes with a Shimano Tourney 1x7 set up, which is quite underwhelming. However, ...
Prash's user avatar
  • 141
3 votes
2 answers
707 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
  • 1,408
2 votes
1 answer
168 views

Shimano 7 speed shifter with 9 speed drivetrain

Can I use a Shimano Alivio 7 speed shifter with Shimano Deore 9 speed drivetrain? Basically the bike originally came with everything being set up for 7 speed. Somebody switched out my tire/rim and ...
Phil's user avatar
  • 21
12 votes
3 answers
3k views

Can I update a decade-old mountain bike to modern standards?

About ten years ago, I built myself a new bike, for general utility riding and some light trips through the countryside (tens of miles on towpaths etc). I was most familiar with the classic (hardtail) ...
Tom Anderson's user avatar
2 votes
3 answers
170 views

Something feels like brake rub but isn't brake rub

I brought my road bike on a flight last week and after I put it back together I immediately noticed it felt slow and muddy. It felt like I had brake rub or a mushy back tire. I'd say it feels about ...
900edges's user avatar
  • 121
3 votes
2 answers
150 views

Boardman Comp Hybrid 2012 - Suggestions for cheap way to get much lower gearing?

I am just about to buy a boardman comp 2012 hybrid bike which I want to use bikepacking. The gearing will be a little high as standard, it's a flat bar setup with Sram X5 9 speed shifters and rear ...
Andy Bbop's user avatar
1 vote
1 answer
483 views

What is the largest cassette I can fit on a Canyon Grizl CF SL 7 1by?

I'm considering buying a Canyon Grizl CF 7 1by, but I do a lot of bikepacking in hilly areas, so I'd like to put on a larger cassette to lower the minimum gear ratio. What is the largest cassette that ...
joshlf's user avatar
  • 251
2 votes
2 answers
1k views

Will a 11 speed Shimano Deore crankset work with a 9 speed Shimano Altus cassette? [MTB]

I have a 2020 Vitus Nucleus 27 VR with a stripped pedal thread on the left crank arm (bought it secondhand, and am guessing the previous owner crossthreaded it). The current drivetrain is a 2x9 ...
jpb647's user avatar
  • 23
0 votes
1 answer
479 views

Tiagra 4700 2x10 vs 105 R7000 2x11 for Gravel Bike

I'm putting together a gravel bike from parts. It will be for mechanical brakes -- cantilever at first and maybe mechanical disc later. I will be buying new shifters, derailleurs, cassette, and chain. ...
Old95rpm's user avatar
  • 300
5 votes
4 answers
4k views

Drivetrain 1x12 or 2x10 for my MTB use case?

I didn't ride bikes for quite some time and decided to start again this year. I'm currently looking for a MTB that will be kind of universal, I'm pretty much set on everything and picked few models, ...
Bob_the_bob's user avatar
2 votes
1 answer
338 views

Chain not meshing with new cassette

My chain is a SRAM PC-971, worn less than .75", and my derailleur is 9-speed 105. I just installed a new Shimano HG-400 cassette, and it seems like the chain isn't 'meshing' correctly, causing a ...
JoshuaF's user avatar
  • 261
3 votes
1 answer
336 views

Looking for an optical gear display solution for a Shimano Ultegra 10 speed 6700 group set [duplicate]

I upgraded my wife’s road bike for a 2011 carbon Devinci CX4 equipped with an Ultegra 6700 groupset. She’s missing the optical gear indicators she used to have on the shifters. I already looked at the ...
Philippe W's user avatar
1 vote
4 answers
223 views

Chain skipping teeth while staying on small front chainring

I recently converted my bike with 9 speed 105 from a triple to a double chainring. I installed my new 34/50 crankset and noticed that chain would slip across the teeth of the 34t chainring whenever ...
pazzmaul's user avatar
0 votes
0 answers
53 views

Is it a X sync or an X sync 2

This chainring is it an X-SYNC or X-SYNC2? https://www.bike-discount.de/en/sram-eagle-12-speed-chainring-x-sync-2-direct-mount-6mm-offset It is sold as xsync2 but on the chainring is clearly mentioned ...
davidm's user avatar
  • 145
2 votes
4 answers
939 views

9/10 speed chain with vintage 2x5 crankset

I have an old crankset from an 80s 10-speed (2x5) bicycle with downtube friction shifters. The chain currently in use is marked as "6/7/8 speed," but works fine on the 5-speed freewheel. For ...
jayded-bee's user avatar
5 votes
3 answers
600 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
  • 153
2 votes
3 answers
170 views

Chain clanking whenever I start to pedal

Update: I've received the bike back from the workshop, and they did a lot of work! Had to replace the whole drivetrain, all components were completely worn out. This issue started a few days ago and I'...
surrey_cyclist's user avatar
1 vote
2 answers
142 views

What components of the drive train are cross compatible between casette number of rings(10 / 11 speed)?

I have an old 10 speed road bike fitted with (Mostly) Shimano 105 groupset drivetrain. I'm looking to replace a few parts and I noticed that 10 speed 105 and Ultegra parts are not so easy to find, ...
Philip Couling's user avatar
6 votes
1 answer
528 views

Shimano cassette number of teeth

Newbie question here. Currently on my old Tiagra 4500, I have a Shimano HG50 9-speed Cassette, with 11-25T. I need another cassette, as I got a smart trainer, but it is a bit hard to find such a ...
Dan Cantir's user avatar
1 vote
1 answer
806 views

Can this combination work? SHIMANO RD M5120 with a M6000 drivetrain?

I definitely dislike the new proposals made by SHIMANO, but I have found that RD M5120 can be used in 10 or 11 speeds, it would only depend on changing the chain. Well, my doubt arises due to the fact ...
Antonio Dishington's user avatar
2 votes
1 answer
428 views

Crankset compatibility: Can I replace Shimano FC-M521 with FC-T4010?

I recently bought a Jamis Coda Elite (2012) second hand. I'm slowly replacing all of the drive train as most of the components are worn. According to p114 of the original product catalogue, the bike ...
jbowman's user avatar
  • 155
0 votes
1 answer
93 views

Can I put a Shimano 1x12 group set on my benotto xc 4000

I just want to know if there would be any special modifications in order to make it work?
Mark Phillips's user avatar
0 votes
1 answer
487 views

Can I use a campy (Campagnolo) 11 speed chain on a Sram Force 22 drivetrain?

After reading this article about “finding the best bicycle chain”. The article goes through factors like chain endurance and power transfer efficiency. After reading the article I see that the ...
Mohammad's user avatar
  • 103
1 vote
3 answers
325 views

Replacing rear derailleur and shifters when upgrading from 3x7 to 3x9 drivetrain

I am considering upgrading my old trekking bike from a 3x7 to a 3x9 drivetrain. The bike is currently equipped with a 26/36/46 Shimano Exage FC-M320 which I intend to keep due to its wide sprocket ...
albert's user avatar
  • 151
1 vote
2 answers
1k views

My bike is making a grinding noise when I ride

So recently whenever I am riding my bike and I push down to a certain point, my bike makes a grinding noise and I can feel the main frame grinding as well, I can't seem to identify where it is coming ...
Keyin Liu's user avatar
  • 233
1 vote
2 answers
3k views

How to calculate what BB spindle length I need for a mystery crankset?

I'm building up a bike frame with spare/junk components to be my beater bike for commuting. It will be a single speed, chainline on my rear wheel is 42mm. I have a crank set to use, but I'm not sure ...
Loralrose's user avatar
18 votes
4 answers
4k views

Why are long haul touring bikes sold with 9-speed drivetrains?

Following up on this question, I had a look on the specifications of 'long haul touring bikes', such as the Trek 520, Salsa Marrakesh, and Surly Disc Trucker. One thing that surprised me was that they ...
Renaud's user avatar
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