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

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5
votes
1answer
246 views

TdF - Mountain stages without a front derailleur?

An article on VeloNews about EPO use featured the following photo of Lance Armstrong from Stage 8 of the 2003 Tour de France: I noticed that Lance does not have a front derailleur. His left shifter ...
1
vote
1answer
67 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 ...
0
votes
1answer
31 views

Conversion 9 spd to 10 spd [duplicate]

I'm thinking of upgrading from a 9 speed (11-34T cassette) to 10 speed. Scoped out a few components and 1) Shimano Deore XT CS-M771 10-Speed Cassette 11-36T 10-speed HG cassette 2) Shimano Dyna-Sys, ...
0
votes
0answers
111 views

How long before manufacturers adopt new drivetrains?

I have been looking for a new bike recently, and the gravel grinder category of bikes really appeals to me. However, I also prefer having only one derailleur, and an affordable 1X gravel grinder is ...
4
votes
1answer
174 views

Shimano Cassette 10 Speed Teeth Selection

I am planning to upgrade my drivetrain and I'm in the process of selecting the various components. My bike currently has a Shimano Tiagra CS-4600 10 Speed Cassette 12-28t. I am looking to upgrade to ...
2
votes
1answer
86 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 ...
0
votes
0answers
26 views

Want stylish rear derailleur to match 1980s friction-shifting bike? [duplicate]

I've just crashed and bent the Suntour Cyclone long cage rear derailleur which I've used since 1985. (Damn.) Can anyone recommend a new model that meets the following requirement? This was a classy ...
3
votes
1answer
114 views

new 9-speed chain fails after 4 weeks and ~240 miles

About 4 weeks ago I installed a new SRAM PC-971 chain on my Surly LHT. This morning I've noticed that one of the outer chain link plates started to pull away (to spread in a way that the pin is not ...
3
votes
1answer
70 views

Custom Shimano 3x11 drivetrain

I have a Trek 720 disc which came with a 2x11 Shimano 105 drive train setup. When it's fully loaded for touring going up steep hills is just too hard - I'm barely heavy enough to push the pedal down. ...
0
votes
1answer
80 views

Rear derailleur needs a couple pedalstrokes to change gear

As of late I'm having some trouble with my rear derailleur. When I shift specific gears (most likely to happen to the middle gears), the rear derailleur feels like it doesnt have enough power and ...
3
votes
1answer
82 views

Converting a 7/8spd cassette to 4/5spd

Lets get some things ticked off: Friction shifting, check Narrow stance cranks, check 2 or 3 spacers on the right hand side, check Single chainring, check (That's the context.) Are there ...
6
votes
4answers
245 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 ...
4
votes
2answers
574 views

Is it possible to install a 1x11 drivetrain on an old MTB?

I have an old Stumpjumper from 1984. It has the original 3x5 drivetrain with friction shifting. I'm intrigued by the idea of converting to a 1x11 drivetrain, but I don't know what factors to consider ...
5
votes
1answer
340 views

belt vs chain for what matters performance only

Let's set apart all pros/cons of chains vs belts, like: ease of maintenance, need of a custom frame, cost, spare part availability, all of that: nope. This question is very focusing only on ...
3
votes
2answers
539 views

Can you use a wide range 11-42 cassette with a double crankset

Can you use a 10 or 11 speed wide range (11-42, 10-42, or 11-40) cassette with a double crankset? I know these wide range cassettes are typically built for a 1x setup on a mountain bike, but is ...
7
votes
3answers
686 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: ...
2
votes
1answer
50 views

Can I use the drive train of another bike?

I was gifted an old bike that I've decided I want to fix up and use. I believe it's a hybrid, not quite road and not quite mountain bike. It's 21 speed and it's an Apollo quick cross (I can't find ...
3
votes
1answer
219 views

Fettling issues - slow shifting rear gears while riding

I've recently had an issue with my gearing, struggling to shift down onto the last few cogs on the cassette. I've got a Shimano Ultegra 6800 groupset, but when I shift whilst riding, I get a "tick-...
5
votes
3answers
445 views

Derailleur Pulley Wheel Compatibility

I can't find replacement pulley wheels for my derailer that are explicitly made for it. Should I be safe replacing them with a set with the same number of teeth (i.e., the same diameter) and targeted ...
-1
votes
2answers
124 views

Converting single speed bike to geared

First I want to clear out what what I possess: An Avon rowdy single soccer BICYCLE An Avon rowdy DX double disk 21 geared cycle I want to take out the gears from the DX to my single version. I can ...
5
votes
2answers
508 views

What does “chain binding” mean?

I'm reading on chain tensioning, the generic idea is that if the chain is too loose it will fall off, if it's too tight it will "bind". I'm having an hard time understanding what "bind" means in this ...
2
votes
1answer
131 views

Noisy drivetrain on road bike

I have a noisy drive train on my Trek road bike with Shimano 105. It's very noticeable on the big cog, and is not as bad on the small cog, but still irritating. It's just a constant whiring noise. I ...
0
votes
1answer
171 views

Converting from 7-speed to 10-speed rear wheel

My Bridgestone MB-5 currently has a 7-speed rear wheel. I'd like to convert it to a 10-speed. Is this possible? Is it practical?
3
votes
1answer
147 views

Indexed rear derailer shifts two cogs for each step

I'm trying to troubleshoot poor shifting issues on a mountain bike that appears to have been built out of the spare parts box… The current problem is "instability" on the rear derailer – the chain ...
4
votes
6answers
2k views

Are older road bike parts compatible with newer standards? How do older and newer bikes match up performance wise?

I'm a big mountain biker and looking to get into road biking. However, I don't want to drop $1,500 on a new or relatively new road bike without being sure I'd want to stick with it. Anyway, I found ...
1
vote
3answers
208 views

SRAM compatible 11 speed 12-25 cassette?

I'm looking for an 11 speed 12-25 cassette compatible with a SRAM drivetrain, however I don't think SRAM makes one. They list specs for their 11 speed cassettes as follows: 11-25: 11,12,13,14,15,16,...
1
vote
3answers
389 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 ...
1
vote
3answers
351 views

Is the plastic piece between the seven gear sprocket and the spokes hard to replace, and how?

I was given a 21 gear mountain bike as payment for some work I did for a neighbor which had been in his backyard for about a year. Though it cleaned up very well there is one part I would love to ...
0
votes
2answers
96 views

MTB 9 speed sram shifters/rear deralier, shimano 9 speed cassette (HG?) only shifts to 8 cogs

I have an old KHS Team ST frame that I just threw components on about 15 years ago. the drive train is SRAM esp 9.0 shifters and rear derailleur with a shimano HG cassette. I have never been able to ...
1
vote
4answers
10k 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 ...
1
vote
2answers
4k views

SRAM xx1 1 x 11 drive train very noisey

I have a 1 x 11 setup on my mtn bike. This is stock from the factory, it wasn't a conversion. When Im in the granny gear climbing, there is a lot of chain/derailer noise. It gets more noticeable ...
4
votes
2answers
146 views

Is there a difference between the durability of the chains with 1/8 and 3/32 inch?

I mean, I have a single-speed bike and have chains width 1/8 inch. The other standard I could use on my bike is 3/32 inch wide. Is there a difference in durability?
1
vote
3answers
788 views

What does chain worn indicators 75% mean?

I've bought a chain wear checker made by BBB, but not sure what the percentage of worn is about? It has 2 sides, one of them indicates that the chain is worn 75% and I should replace it in the near ...
2
votes
1answer
573 views

9sp/10sp compatibility in Shimano SLX drivetrains

This is related to my previous question about SLX chainrings. I'm half way through upgrading my drivetrain from 2x9 to 2x10. I currently have: Shifters: SL-M670-I (10sp), Chainset: FC-M665 (9sp ...
1
vote
1answer
611 views

SLX chainring compatibility

I'm considering swapping the inner ring on my SLX double chainset (M665) from 22T to 28T. I noticed that the newer M675 has a 40/28 option, so I figured that the 28T chainring from this set-up would ...
2
votes
1answer
351 views

Can you use an Alfine 8-speed “disc” hub with a non-disc wheel?

I have a city bike with a Nexus 8-speed and I'd like to rebuild the rear wheel with an Alfine 8-speed. The only hubs I can find all seem to be disc mount hubs. My city bike has v-brakes. Is it ok to ...
7
votes
2answers
355 views

Have there been designs of bikes with stepless transmission?

Today we studied about mechanical stepless drives, which appear to be used quite widely in industry machines, such as CNC lathes. The concept of varying the transmission ratio arbitrary, without ...
0
votes
2answers
543 views

Upgrading rear derailer and cassette

I recently got what most people would consider a cheap and toy road bike as a gift. It came with very primitive RD and cassette (shimano SIS? I think). I enjoy upgrading my stuff, my question is, ...
2
votes
3answers
7k views

Difference between road & mountain drivetrain

Basically MTB and road bikes have different brand parts (like deore / XT; Sora / Utegra etc). What are the main differences between the 2 types, that will make it incompatible? Are there things ...
2
votes
2answers
381 views

How much does number of gears matter for a front derailleur?

I need a low clamp 2x10 front derailleur. As it turns out to be a challenge to find locally, I begin to wonder How important is the rear gear specification? What is I get 2x9? How important is ...
3
votes
3answers
813 views

Chain falling off inner chain ring no matter how L screw is set

Bike is a relatively new Cannondale Carbon Synapse with the Ultegra 6800 groupset (although front chainrings are FSA). Has about 1000KMs on it. Bike has been great, but I went out on a ride today ...
1
vote
2answers
239 views

What will I need to consider when modernizing a pre-1990s steel frame? [closed]

I'm in the process of upgrading a well loved 1970s steel frame from a downtube shifter system to a modern 'brifter' system. Through this process I've had to look at many disparate sources to get ...
7
votes
4answers
595 views

What's the point in a freewheel/cassette with incrementally sized rings?

Pictured is a freewheel with 15, 16, 17, 18, 19, and 20 tooth sprockets. What I don't understand is why such small increments are worthwhile. Surely the point of having gears is the variance that they ...
0
votes
0answers
80 views

Is this FD compatible with this crankset: 2 teeth too litle

I am a proud owner of this guy. The crankset is SRAM S1200, 36/22 and the FD is SRAM X7, direct mount. However, the cage on the FD broke, and I ordered this item in a hurry. 1) Dyna-Sys 10-speed ...
1
vote
3answers
1k views

Theoretical question about double drivetrain (both-sides drive)

If one were to take a single-speed flip-flop hub, and fit two identical freewheels, and couple them to two identical chainrings (i.e. two drive-side cranks, one on each side of the bike), you would ...
1
vote
1answer
436 views

Going from a 1x8 to 2x10 setup

After using my bike for a year I feel that although I enjoy the simplicity of a single chainring setup, I would prefer a more versatile 2x10 setup and would like to move to it. Currently the two ...
4
votes
2answers
550 views

Chain drops in smallest gear under load

I'm baffled. I installed a new chain, cassette, cables and housing yesterday. On the stand, all is happy and shifting is silky smooth. On the road all seems happy except on the bigger cogs in back (in ...
5
votes
3answers
1k views

Has a bike been made with a rear derailleur above the chainstays?

The question title pretty much sums it up, but has a bike with an alternate drivetrain style like this been made? This would mean a derailleur mounted essentially upside down with the tension pushing ...
12
votes
3answers
6k 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 ...
0
votes
2answers
3k views

What components are required to upgrade from a 14 speed to 24 speed?

I made the mistake of buying a 14 speed bike... I live in WA so it's hills everywhere you turn, took it for a spin yesterday and while on flat surfaces it felt great, but taking hills or going down a ...