All Questions
410 questions
4
votes
2
answers
141
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 ...
- 719
5
votes
2
answers
2k
views
Can I swap an SGS cage on a Shimano RD-M8100 having a GS cage?¹
It's been difficult to locate a new XTR M9100 or XT M8100 with the SGS (long) cage from the few reputable U.S. dealers I buy from where Shimano will honor their warranty. The GS cage versions are ...
- 11.3k
1
vote
2
answers
80
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, ...
- 62.5k
4
votes
3
answers
1k
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, ...
- 141
2
votes
3
answers
5k
views
Which is best combination for my 34T chainring, a 11-42t or 11-51t cassette
I am a newbie enduro rider and also i love riding rough terrain uphills, my question is which set of cogs will be more efficient on my riding dicipline. 11-42t or 11-51t 11 speed cassette. Also, I am ...
- 133
3
votes
2
answers
946
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 ...
- 1,528
2
votes
1
answer
265
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 ...
- 21
2
votes
2
answers
236
views
1x12 chain stability on chainring
Aside (Trivia #1): The concept of offset just crept into the standard chainring jargon. When were chainrings with offset introduced?
Context: Traditionally the teeth of a chainring were on the same ...
- 10.4k
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) ...
- 393
3
votes
2
answers
332
views
11-36 11spd Cassette with Shimano RD-M8000-GS?
I'll try to be concise here, but lots of numbers coming your way...
Currently running Shimano 1x11spd, 11-46 cassette with RD-M8000-GS rear dr. The three lowest sprockets are -32-37-46.
The derailleur ...
- 31
2
votes
3
answers
211
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 ...
- 245
1
vote
2
answers
3k
views
Maximum recommended cassete size for 26 inch wheels
Hello I was looking to upgrade my 2011 Specialized Stumpjumper Hardtail comp to a 1x drivetrain. 11 speed Shimano deore M5100 caught my eye with its low price and wide range (max 51 tooth cassette). ...
- 185
3
votes
2
answers
202
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 ...
- 31
1
vote
1
answer
877
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 ...
- 251
2
votes
2
answers
3k
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 ...
- 23
0
votes
1
answer
891
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. ...
- 300
5
votes
4
answers
6k
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, ...
- 51
2
votes
1
answer
902
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 ...
- 261
3
votes
1
answer
557
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 ...
- 31
1
vote
4
answers
397
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 ...
- 31
0
votes
0
answers
139
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 ...
- 145
2
votes
4
answers
2k
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 ...
- 841
1
vote
2
answers
10k
views
Understanding SRAM chain sizing guide
I'm having trouble understanding the latest SRAM chain sizing guide.
I run a 1x11 on a full suspension bike (not eagle).
You can see in the image there two scenarios for chain overlap. They have the ...
- 43
3
votes
1
answer
2k
views
Chain length when upgrading chain ring
I currently run a 1x11 with a 30t chain ring. I'm upgrading to a 32t chain ring and a new chain. The cassette will be the same. Would I be correct in assuming I need to be +2 links on my new chain?
- 43
4
votes
1
answer
226
views
Gravel derailleur advice
I have a gravel bike with the following 1X set up:
FSA Omega Megaexo crank, 40T
Sunrace 11-46 CSMS8 cassette
Sram Apex1 11 spd derailleur
Sram Apex 11 speed Double-Tap shifter
I would like to change ...
- 151
5
votes
3
answers
729
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 ...
- 153
4
votes
2
answers
2k
views
Adding a second chainring to a 1X
I have a 1X gravel bike with an 11-46 cassette and a 40T chainring. This gearing works for most of my riding but there are times when I'm doing some serious climbing that it would great to have one or ...
- 151
2
votes
3
answers
215
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'...
1
vote
2
answers
187
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, ...
- 205
6
votes
1
answer
565
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 ...
- 163
1
vote
1
answer
1k
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 ...
2
votes
1
answer
769
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 ...
- 155
2
votes
1
answer
551
views
Chain pops up while backpedaling in highest gear
Backpedaling on highest gear (11t) causes chain to pop up/out off at the front top part of the smallest cog. The bike and all components are very new and stock. This is a 1-by Shimano GRX Drivetrain. ...
- 21
0
votes
1
answer
119
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?
3
votes
2
answers
562
views
Shimano Deore 11s derailleur and shifter with a 9s casette 11-46t (Sunrace)
I was questioning if can I fit an 11s Deore derailleur with shifters to a 9s 11-46t Sunrace cassette?
I've got the doubt because I need to change my derailleur to one that can tolerate up to 46t ...
0
votes
1
answer
794
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 ...
- 103
1
vote
3
answers
621
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 ...
- 151
1
vote
2
answers
3k
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 ...
- 231
2
votes
2
answers
9k
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 ...
- 33
4
votes
3
answers
1k
views
Can you use a shimano Tourney Rear derailer with a 1 x 11 (11- 52 ish) sprocket?
I'm trying to upgrade, but the Shimano Deore is too expensive... The problem with the other brands is that their rear derailleurs does not have good tension... so can I use a Shimano Tourney in a 1 x ...
- 41
18
votes
4
answers
5k
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 ...
- 24.7k
6
votes
1
answer
663
views
Will my mix-and-match drivetrain work?
I'm currently assembling a 3x9 speed commuter bike with the following groupset details:
Crank: Shimano Tourney TY501
FD: Shimano Tourney TY510
RD: Shimano Altus M2000
Chain: Shimano 9 speed
Sprocket: ...
2
votes
2
answers
142
views
installing 1x11 gearset on a 1986 Bianchi Strada
I have a 1986/7 Bianchi Strada it is a 2x5 gearset, a SuginoVP 110 crankset and shimano derailers. I want to convert it to be more like a gravel bike so change it to 1x11 or 1x9 gearset with 11-36 ...
- 21
5
votes
6
answers
1k
views
Can 2x12 and 3x11 drivetrains have (practical) range greater than 700%?
I’ve come across 2x12 and 3x11 triple cranksets. Can these systems necessarily provide more range than 2x11 and 3x10 @ > 700%?
Edit: My question is really what can practically be accomplished, with ...
- 415
6
votes
7
answers
2k
views
Does a bike-stalling speed exist? [closed]
Planes can stall. A plane maintains lift through speed. If the speed drops below a threshold, the plane stalls and begins a downspiral.
Now that many 1x modern bikes are discarding front derailleurs, ...
- 10.4k
3
votes
3
answers
859
views
Can I use a 2x10 rear derailleur with 3 front rings?
I am looking at something like SRAM GX 2x10 MTB Rear Derailleur. Will it work with 3x MTB?
- 144
2
votes
1
answer
344
views
11t sprocket compatibility between Shimano 105 and Ultegra
Specifically, can an Ultegra r6800 11-speed, 11t sprocket replace the 11t sprocket on a 105 r7000 cassette without issue?
- 123
13
votes
2
answers
2k
views
Gates CDN - frequent belt failures
update at the bottom
I ride a belt drive bike fitted with a Gates CDN front sprocket (on the crank), a CDN belt and a CDX rear sprocket. Around the 2200km/1400mi mark, the CDN belt failed and teeth ...
- 645
3
votes
2
answers
2k
views
Can I use a 10 speed Campagnolo Crankset with a 10 speed Shimano drivetrain and chain?
I'm looking at rebuilding an older Cervelo R3 which had a Campy Record setup. Most of the gear is pretty old now and probably needs replacing, and I have a set of race wheels which are set up for ...
0
votes
1
answer
168
views
Help with drivetrain decision [closed]
Currently upgrading my old steel mountain bike for commuting. I need some advice on what drive-train to go with. Current setup is 3x7. I will convert to either 1x9 or 1x10 with new rear wheel/hub. I ...
- 97