Questions tagged [drivetrain]

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

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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 ...
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  • 151
2 votes
3 answers
73 views

Chain clanking whenever I start to pedal

This issue started a few days ago and I'm not sure what is causing it. Anywhere from 5-30 seconds after starting off, I can hear a loud clanking sound coming from the drivetrain, and sometimes there ...
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1 vote
1 answer
46 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, ...
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6 votes
1 answer
488 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 ...
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0 votes
1 answer
55 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 ...
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2 votes
1 answer
57 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 ...
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1 answer
64 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?
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0 votes
1 answer
66 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 ...
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  • 103
1 vote
3 answers
80 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 ...
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  • 151
0 votes
2 answers
166 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 ...
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  • 203
1 vote
2 answers
77 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 ...
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15 votes
4 answers
3k 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 ...
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6 votes
1 answer
500 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: ...
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2 votes
2 answers
88 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 ...
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5 votes
5 answers
666 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 ...
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3 votes
3 answers
454 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?
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  • 144
2 votes
1 answer
72 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?
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  • 123
8 votes
2 answers
396 views

Gates CDN - frequent belt failures

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 started snapping off (...
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  • 353
3 votes
2 answers
113 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 ...
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0 votes
1 answer
88 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 ...
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2 votes
2 answers
105 views

1x7 mtb electric conversion?

I picked up a '93 Marin Bear Valley SE from a vintage store and spent time restoring it (surface rust, old components etc). I was pleased with how it turned out and enjoyed riding it, nice old steel ...
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3 votes
1 answer
179 views

9 speed cassette and shifter with an 11 speed derailleur, will it work?

So recently my uncle gave me a Deore M5100 11 speed RD, but my current setup uses an Alivio shifter with a LTWOO A5 elite RD and an 11-46T cassette. While yes the LTWOO RD is designed to handle a 46T ...
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  • 31
5 votes
2 answers
311 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 ...
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  • 53
13 votes
3 answers
2k views

Whatever happened to the 4 x n derailleur drivetrains?

Around the mid-1990s I am positive I remember seeing bikes with 4 x n drive trains e.g. 28-speed (4 x 7 gears). There is nowadays a trend towards just 2 or even 1 front sprocket e.g. 1 x 12. More than ...
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1 vote
1 answer
80 views

120 BCD Chain ring compatibility

I am converting my merida silex from fsa omega bcd 120/90 bcd 2x9 to a 1x9 drivetrain. I am keeping the cranks and bottom bracket and trying to only change the rings. There are not many 120 bcd narrow ...
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4 votes
3 answers
136 views

New freehub body causing chain slack and ghost pedaling

I have replaced my freehub body like-for-like. Now when I freewheel, the top part of the chain goes slack and the pedals spin when I take my feet off them. This usually occurs on old gunked-up ...
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  • 143
4 votes
2 answers
507 views

Is Shimano 11 speed crankset compatible with 7-speed cassette?

I'm upgrading an old folding bike (Dahon Speed). It currently has a 7 speed shifter and a Shimano 105 RD. However I haven't decided whether to stick to flat bar or change it to drop bar. I'm wondering ...
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  • 139
2 votes
2 answers
84 views

Noise when powering down on left crank only

This one is a mystery to me. I ride a carbon road bike and just recently a clicking noise has developed when I push hard on the left side crank only (right side makes no noise). I have tried different ...
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  • 21
0 votes
3 answers
753 views

3x9 versus 1x12

I don't know much about bikes. I bought a "Kona Dr. Dew" 10 years ago, it has a 3x9 set of gears. The front rings large and small have 50 and 30 sprockets, and so I guess that's (9 * 50 / 30 ...
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0 votes
2 answers
258 views

21 speed to 12 speed conversion! Is it possible?

I have an entry level MTb with 21 speed gear ratio. I found out that i dont need that kind of complexity while riding. 12 speed seems light and compatible to my riding style. It has Shimano tourney ...
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0 votes
2 answers
92 views

Possible Maximum Gear Ranges of Each (3?) Possible Triple-Geared Drivetrain

I'm looking for the absolute maximum possible gear ranges from the known/possible triple-geared drivetrains, such as the strategy noted on TrikeTech.com. This involves pairing each of the three known ...
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1 vote
0 answers
93 views

Other Dual Drive hubs than Sturmey Archer or SRAM?

I'm looking for a dual drive type hub. At least that's what SRAM calls them. Hubs that are both internally and externally geared. SRAM and Sturmey Archer are the only manufactures of this class of ...
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6 votes
0 answers
249 views

Why did Shimano change their rear derailleur design going from a torsion spring to a tension spring inside the parallelogram?

The older Shimano rear derailleurs (pre 7700) use a torsion spring inside the parallelogram. But with the release of the 7700 group they switched to a tension spring which they continued using ever ...
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  • 629
10 votes
2 answers
1k views

Upgrade drivetrain to allow faster top speed

I have a bicycle with a Shimano Altus 2x9 drivetrain. It has 36 and 22 tooth chainrings and a 11-34 tooth cassette. I am hoping to upgrade this to extend its high range (i.e. 36/11) without ...
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  • 145
16 votes
3 answers
3k views

How many watts are lost when pedalling on Bosch e-bike without a motor/electricity?

When pedalling a Bosch e-bike when its motor/electricity is off, how many watts are lost compared to non-ebike drivetrain? If it differs, let's assume a Bosch Performance CX and 250 watts input power ...
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  • 567
0 votes
1 answer
103 views

Should I Upgrade my MTB Rear Derailleur? (After Crash)

I mashed my 8 speed Shimano Acera rear derailleur in a crash over the weekend and need to get it replaced. Is it worth spending a little extra money and installing a slightly higher-end derailleur, ...
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  • 3
7 votes
2 answers
1k views

How to adjust drivetrain so I don't pedal empty air?

You might know what I'm talking about: coast a bit, then start a pedal stroke, and there may be zero resistance for a part of the cycle (let's say 30 degrees) like you're pedalling empty air. Then the ...
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  • 143
0 votes
1 answer
128 views

Rear wheel not aligned with frame but cog and crank is aligned

My bike was previously a 26er mtb 3x7speed and I converted it now to be a single speed freewheel bike. Is the bike safe to use if the rear wheel is not straight to the frame? It is closer to the drive ...
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6 votes
2 answers
327 views

What are the long-term effect of riding with a chain that's too short?

I bought my bike late November 2017, and have been riding it with the same chain ever since. I've only done very light riding with the longest rides I've ever done amounting to 60km. Last week, I took ...
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2 votes
2 answers
114 views

Drive chain swap clarifications

Been thinking about upgrading my drive train, however, I'm not sure if I've fully understood the compatibility part and wanted to get some more clarifications. Currently have an Advent X (10spd) and ...
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11 votes
3 answers
4k views

Can a counterfeit Shimano chain be used on an authentic Shimano drivetrain?

I accidentally purchased a fake CNHG901 HG-X11 Chain for my Shimano 2x11 M700 Groupset because my original chain already had 0.75 wear. I was naive and stupid to think that I'd actually get a ...
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2 votes
6 answers
635 views

Increase bicycle resistance? [duplicate]

I'm riding a lot with my girlfriend. We just ride - no training or such. Yet I do like to train. The intensity I normally ride with her is not enough for any training benefit. I guess adding weight ...
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  • 477
-1 votes
1 answer
53 views

Chainring compatible

i have a Alivio m3100 Cassette cs Hg400 (12-36T) and m3100 rd, can i installed a 2x crankset Gxp (28-38T) on my drivetrain alivio???
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-1 votes
1 answer
70 views

Gears slipping when back peddaling

So i was out on my bike racing this weekend and i had a pretty fun time but on one of my practice runs my chain fell off so i quickly got off and put it back on and worked perfectly fine from there. ...
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1 vote
1 answer
555 views

Difference Between SRAM SX eagle chain and SRAM NX eagle chain(12 speed)?

I have a Trek X-Caliber 8 with a SRAM SX Eagle 12 speed drive train, but I only have a SRAM NX Eagle chain. What is the exact difference between the two chains, and how can I modify my chain to make ...
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  • 113
4 votes
1 answer
132 views

What is the source of BB area creaking associated with ambient temperature changes?

A general answer would be welcome, maybe encompassing -10C-40C/15-100F temperatures, but my particular ride is an aluminium frame with pressfit BB30 and Tiagra commponents, in Scotland's climate, ...
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  • 1,240
0 votes
2 answers
40 views

Derallieur noises

I have just put a new chain on my bike and the derallieur is making funny noises, like a whirring in all the gears, some stronger than another but all of then neverless, does anyone know what might be ...
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4 votes
2 answers
392 views

Chainguard vs front mudguard to protect the chain from spray

My local bicycle mechanic advised me to get mudguards (such as the ones in Image 1) to extend the life of my drivetrain and protect it from spray in the winter. If I have £20 to spend on either a ...
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  • 51
1 vote
2 answers
182 views

Does it matter how far backwards you can spin your drivetrain?

If I spun my cranks backwards on all my previous bikes I would get a good few spins out of them, maybe as many as three or four on one of the bikes. But with my current road bike I can barely get a ...
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  • 1,240
1 vote
2 answers
207 views

Free Spirit "Brittany Te12" Part Identification/Upgrade

i found this old 12 speed basically attached to a neighbor's back porch by vines, and aside from some superficial rust on the chrome, it seems to be structurally intact. the decals read as stated in ...
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