Questions tagged [drivetrain]

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

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3answers
2k views

Skipping on new chain, new cassette, new derailleur

For a long time I have been having issues with chain skipping on my 1999 Trek 6500. I took a video to illustrate exactly what I mean by "skipping": Over the last ...
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1answer
241 views

Ultegra on Trek Crockett 5

I have 2 questions regarding the switch to Ultegra. I already have Ultegra 32 cassette on my Trek because I build another set of Vision road wheels. Would it be possible to switch completely from the ...
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1answer
73 views

How to find a fitting drivetrain

I'm currently building up a new bike from a vintage Scott Windriver MTB frame. My plan is to install a Shimano Zee 10-Speed drivetrain because I don't really need more gears in my area, I want it to ...
2
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1answer
246 views

Chain Pops When Leaving Cogs

This problem has consumed a lot of time and resources and has yet to be solved. This is a basic Giant Iguana mtb, with a Deore rear derailleur, SRAM 950 9-sp cassette, Truvativ chainrings, Shimano ...
8
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3answers
385 views

Have multi-speed non-freewheeling bikes ever been common?

Prompted by a recent question I was pondering the idea of bikes with variable gearing (derailleur or otherwise) but without the ability to freewheel. Have such bikes ever been widely used? They would ...
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1answer
177 views

Mixing Dura Ace 9000 drivetrain with ultegra?

I'd like to mix the DA9K drivetrain (chain, chainrings, front and rear mech, excluding the cassette) with my current ultegra 6800 setup. I dislike the DA shifters, but I'm ready to upgrade my shifting ...
2
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1answer
1k views

Fixed gear drivetrain problem

Sometimes, when I put a lot of pressure on my pedals while accelerating or skidding, my pedals "drop" like when your cog is unscrewing. I have a lock ring, so it's not unscrewing. I've recently ...
32
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11answers
21k views

Is there such thing as an automatic transmission for bikes?

Has anyone ever designed or manufactured an automatic transmission (or automatic shifter?) for cycling? I imagine such a device would automatically change the gearing to allow the rider to maintain ...
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2answers
110 views

ISO narrow-wide steel chainrings in higher tooth counts >30T

I know Surly, Sram, RaceFace and Wolf Tooth have offerings in small BCD and proprietary fixing systems (cinch & X-sync), but generally only come in one, MTB-range size. Anyone know of a ...
35
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9answers
31k views

Any experience with shaft driven bikes?

I've ridden a shaft driven bike once, when biking in deserted mines in Limburg.‡ They used shaft driven bikes because the mines are damp, and a shaft can be enclosed completely, protecting it ...
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3answers
712 views

Installing a new Shimano compact crank on an older bottom bracket?

I would like to know if I could install a new Shimano compact crank on an older bottom bracket that has a center bolt extraction system? Do I need to change the spindle in the bottom bracket? Do I ...
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1answer
369 views

Will a SLX fit on a Shimano deore 2x10 rear triangle?

Ok so I'm thinking about upgrading to a SLX drivetrain, and I currently have a Shimano Deore Xt 2x10 on my Devinci Troy. The question is whether it is even worth it cause the cassette may be too wide ...
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1answer
2k views

Can't shift down from 50T with clutch on, but can shift down with clutch off, why?

Can't shift down from 50T with clutch on, but can shift down with clutch off, why? I'm using sunrace 11-50 and XT RD-M8000 (SGS), finished setting up everything for absolutely perfect shifting, then ...
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2answers
199 views

Replaced my crackset, chain keeps popping off the small chainring under load

Looking for a little lower gearing on my gravel bike, I replaced the crankset with a FSA Omega with 46/30 chainrings, along with a new bottom bracket & chain. If I stand on the pedals while on ...
0
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1answer
427 views

Can you use shimano m8000 replacement cogs to replace Sunrace mx80 cogs?

Can one use m8000 replacement sprockets 11T 13T 15T to replace the corresponding mx80 sprockets? I appreciate the clusters can't be switched due 3 free sprockets and 2 clusters of 4 on mx80 vs 5 free ...
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2answers
389 views

Could I have enough chain retention on a 1X system with just a narrow wide chainring without a clutch?

My bike is a 2017 Fuel EX 5, i am considering converting it to a 1X (pronounced '1 by') chainring. But i am unsure if i will get enough chain retention to stop my chain falling off with just a narrow ...
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2answers
242 views

How do mechanics test problem that are only happening under load?

My singlespeed bike emits a creaking noise(coming from somewhere in the drivetrain) while I'm riding on it, however it doesn't when pedaling on the repair stand. This question is not about this ...
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2answers
290 views

Trigger shifters partly malfunctioning

I cleaned my wife's 1999-vintage mountain bike, and because no good deed goes unpunished, I seem to have caused a problem in the process. This bike has a Shimano Deore 9-speed drivetrain with trigger ...
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1answer
1k views

Derailleur On A Single Speed

Earlier today, I saw this bike with an absolutely bizarre drive-train. It looks like a single speed, but it has a derailleur on attached to it. The derailleur does not move horizontally, but only ...
3
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1answer
174 views

Do 6 speed flight deck shifters exist?

I'm interested in changing my bike from downtube to flight deck shifters, however I'm struggling to find any 6 speed flight deck shifters. I have a suspicion they don't exist. Thanks a lot.
2
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2answers
126 views

Replaced chain, now the chain falls onto the small chaining

I rode for a little while longer then I should have with my old chain, so I replaced the old chain and cassette. But now when I ride in the big ring, the drivetrain makes a horrible sound and the ...
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5answers
890 views

What can I do to keep my rear derailler in good condition when commuting in the snow?

In the winter, it seems that whatever I do, my rear derailleur stops functioning after few weeks of commuting in light snow. Ice always gets in there somehow, and the chain refuses to move the wheel, ...
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4answers
2k views

Do aluminium chainrings/cassettes contribute to chain wear?

In trying to achieve a long lasting, low maintenance drivetrain, I've read statements about aluminium oxide being the source of the black colour of chain dirt and also being highly abrasive: ...
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1answer
3k views

9-speed to 10 or 11-speed conversion [duplicate]

I have a Look KG361 that is built with 9-speed Ultegra. Is it possible to change the drivetrain to 2x10 or 2x11 with this frame?
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3answers
205 views

Chain sometimes jumps. New parts

Can't seem to get to the bottom of this. I have an 1997 Marin Eldridge Grade. I use it mostly for touring. The chain jumps or skips. It doesn't Jump down to a smaller sprocket. What the chain does ...
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2answers
2k views

Major Problem: 135mm rear spacing road touring frame with shimano 5800 11 speed cassette?

I have a brand new traitor wander touring frame, it has 135mm rear spacing like a mountain bike (this is a road touring frame). I bought 29er mountain bike disc wheels that were advertised as 11 ...
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1answer
8k views

Chain is locking up

This only happens in my granny gear going up hill, just started too. I am pedaling up a steep hill and the pedals suddenly stop, obviously the chain is jamming somehow. The first time it did this I ...
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2answers
135 views

Difference in Chain Types

What is the difference in chain types, some say 11 speed, some say 9. Is the only difference length, what would happen if i put an 11 speed chain on my 9 speed cassette ? thanks.
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2answers
7k views

Can riding without a chain damage a bike?

I've been really struggling learning to ride fakie (backwards) on my BMX. Tonight, an idea occurred to me. If I remove the chain from my bike, it'll be a "free coaster," and I won't have to pedal ...
3
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1answer
607 views

Can I replace 11 speed 11-40t with a 11-42t or 11-46t staying with Shimano XT family?

Can I replace the 11 speed 11-40t cassette with a 11-42t or 11-46t? What other parts will be needed to complete job? I.e. new chain, long chain, spacers?
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0answers
118 views

Nasty noise from chain device

Hi I've purchased and fitted a superstar components plasma chain device in my specialized big hit. It makes a terrible noise and I really don't see why. As far as I can see I've set it up correctly ...
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1answer
2k views

Does master-link size matter?

I recently got this chain master-link for my 21 speed bike but it turns out that it's really meant for a 24 speed drivetrain. Does this mean that the master-link won't be good on my set up? Or that it'...
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4answers
852 views

Downgearing with a road triple

My mother is trying to get back on her bike after years of knee problems + surgery, which so far has gone ok, but she has had some trouble with climbing hills. She's thinking that she should try to ...
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1answer
1k views

8 speed drivetrain stronger than 9 speed?

I see a lot of people recommending 8 speed drivetrain over 9 speed for a touring bike because they are supposed to be stronger (e.g. in the buyers guide of the Adventure cyclist magazine, issue april ...
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5answers
3k views

Does (square-taper) BB spindle length affect Q factor?

I am having knee and ankle trouble on my commuting bike (1993 Specialized mtb) and this has a 73mm BB with a spindle length I haven't measured but there is space between crankarm and frame. I wanted ...
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1answer
2k views

Converting 3x to 1x Drivetrain

I have a new crankset (link) on the way as well as a chain guide/bash combo from OneUp. I am getting a 36T narrow-wide chainring also. The bike I'm working on has a SRAM 3x9 drivetrain with 11-34 ...
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4answers
2k views

Campagnolo Crank Compatibility 11 speed crank to 9 speed chain/deraillieur/shifters

I need to replace my 9 Speed Campagnolo Racing T Crank with a new one which uses the power torque system. Is a 11 Speed Athena (or 10 speed Centaur) crank compatible with the racing t front ...
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2answers
1k views

Chainring for 1x8 drivetrain

I'm building a city/light-touring bike with a single chainring and an 8 speed cassette (11-32T). I bought cranks with the wrong chainring; one for single speed, with a 1/8" chain. I now want to make ...
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2answers
5k views

9-speed Sora w/discs to 11-speed 105 - What Sora bits can I keep?

I'm planning to upgrade from 9 to 11 speed, Sora 3500 to 105 5800. I'd like to keep my existing mechanical disc brakes, which I believe I can, but please correct me if wrong. Also, if I bought the ...
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1answer
2k views

Is Back-pedalling normal ? chain keeps jumping from higher to lower cog in rear cassette

I just bought a new bike Marin Pine mountain-1 which has 1 X 11 drivetrain. I want to know is Back peddling normal ? I called my mechanic and he said you should not do back peddling or this will ...
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5answers
55k views

9-speed system to 11-speed drivetrain upgrade?

I am currently upgrading my bike from a 9 speed to an 11 speed system. I am currently using shimano 105 components and will continue to use them within the new system. Current bike has a shimano 105 ...
2
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1answer
160 views

Replacing BB and Chainset only?

Presently my bike has an FSA 19mm piece of junk BB and omega chainset. As this is a unique system it has no compatible parts. The bike uses Tiagra 4500 9 speed for the rest of the components. If I ...
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1answer
526 views

SRAM GX1 comparability with double crankset

I am considering purchasing a bike with SRAM's GX1 11x1 gearing but I would like to switch it to use a double crankset. Is the SRAM GX1 rear derailleur and cassette compatible with a dual crankset? ...
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1answer
2k views

How to get slower gearing on a 1x10 drivetrain

Looking at purchasing a new bike with a 1x10 gearing setup. I am concerned that with my current or future level of fitness, I may need slower gearing on the bike. What is the easiest (and cheapest)...
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0answers
50 views

Rubbery chatter sensation in drivetrain

I have a 1x 9s setup and am a strong rider, I ride as a courier everyday. I recently set this up with 2nd hand parts and built the wheels myself. I noticed some slight play (wouldn't really say play, ...
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2answers
2k views

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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2answers
256 views

Chain derailment from front crank. Fine on large ring won't hold on smaller inner ring

Second hand bike. GTZR3000 Shimano 105 9 speedshifter 9 speed rear group shimano 9 speed tiagra rear derailleur The bike runs fine on large front ring, shifting is perfect. When I change for an ...
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2answers
2k views

Drivetrain squeaky birdsong

Road bike with Shimano Tiagra 2x9 compact drivetrain makes a continuous random pattern of quiet squeaky noises (like birdsong) when the bike is leaning against a wall and the pedals are rotated ...
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1answer
2k views

What are the ridges seen on sprockets and chainrings for?

I've always wondered what these ridges below the teeth on sprockets are for. Can anyone enlighten me?
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1answer
1k views

Shimano 10 - 11 system hub compatibility - MTB

I have Shimano XT 11 speed compatible rear wheel (on Novatec hubs, the ones that came with Kona Process 134 DL 2016). Can I use Shimano 10 speed MTB system on this hub?

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