Questions tagged [derailleur]

Mechanism to move the chain from one sprocket to another.

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9
votes
3answers
4k views

Why does my rear derailleur keep breaking?

I upgraded my rear-mech with a new cassette, chain and new cables a few weeks ago since then i've mangled two rear mechs! Both times I've just been riding along; not in a big gear; not at the ...
1
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2answers
99 views

Campy 11 speed and Shimano compatibility

Two part question. Is it possible to run Chorus, Record or Super Record 11 speed disc mechanical brake/shifters with Ultegra R8000 11 speed derailleurs? I can use either campy or Shimano wheels and ...
2
votes
2answers
105 views

What factors to take into account when choosing a hybrid bike?

I've decided I'd like to start commuting to work, but I'm not sure what factors I need to take into account when choosing a bike. I figured a hybrid bike suits my needs best, since I will be riding on ...
0
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1answer
53 views

Upper pulley too close to chain [duplicate]

Today i put my bike on my tacx home trainer. I heard a lot of ticking on my chain, so after viewing my setup i recognized that my upper pulley is too close to my chain when it's on the smallest cog ...
3
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5answers
4k views

Can I change a 3speed sturmey archer to a derailleur system?

Might be daft but can I change an internal hub for a derailleur option. I have an old bike which is slow but I do love it. I want to upgrade my running gear but the "chassis" is still tip-top. I don't ...
3
votes
3answers
438 views

Replacement for Suntour Superbe Tech Rear Derailleur

I recently picked up an 85 Cannondale ST500 with a Suntour Superbe Tech rear derailleur. The cage is bent and the bearings in the guides don't feel too fresh. I'm just starting to get into bike ...
4
votes
2answers
248 views

Chain cassette noise

Hello fellow cyclists, I just bought a new Home Trainer that has a Shimano 105 Cassette. My Bike has an Ultegra drivetrain with less than 600km (375mi). I have checked the wear of the chain which ...
1
vote
1answer
86 views

Chain and derailleur question

I inherited a Motobecane Nomade with no derailleur. I am trying to replace the missing derailleur and chain. I was given a Shimano SIS Tourney rear derailleur long cage and front derailleur and ...
3
votes
3answers
171 views

Cage Length (Rear Derallieur) and Total Capacity

My drivetrain required total capacity is 14. (folding bicycle Dahon Eco C6, 14-28 rear, 1x front) The rear derailleur (Shimano TZ50, which I purchased), has total capacity = 34 and a long cage. Are ...
0
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1answer
51 views

Replacement for an old FD-M760 front derailleur

I've got a bent FD-M760 front derailleur. I'm wondering what the best replacement would be?
3
votes
3answers
147 views

Can I use any screw for my derailleur limiters?

I need new limit screws for my rear and front derailleur. Bike shop wants to charge $5 for them when they probably cost $0.05 each. Can I just get my own screws from the hardware store or do ...
0
votes
1answer
64 views

Problem with Apollo Gradient clunky and missed gear changes

About four months ago I decided to get back into riding. I bought an Apollo Gradient mountain bike. I know this is quite a cheap/basic bike but didn't want to spend a lot if I didn't stick with it. I ...
43
votes
11answers
26k views

What's the efficiency of hub gears compared to derailleurs?

What's the efficiency of hub gears compared to derailleurs? I know that hub gears are not as efficient. Apart from being heavier, how much will I lose in performance if I use hub gears?
7
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4answers
7k views

Are the Shimano derailleurs sold on Ali Express genuine or fake?

I am trying to buy Shimano Alivio M4000 components. When I was researching on Ali Express, I found this. This is Alivio M4000 including the front derailleur, rear derailleur, left and right Shifters ...
1
vote
1answer
53 views

Fuji Transonic 2.8 2016: rear derailleur hanger direct mount or standard?

I have a Fuji Transonic 2.8 from 2016 that has the following hanger installed: https://wheelsmfg.com/derailleur-hanger-215.html I am replacing the short cage Shimano 105 rear derailleur with the ...
2
votes
2answers
442 views

Nine speed derailleur on 10 speed cassette

Will combination work? I have 10 speed shifters, 10 speed chain, 10 speed cassette and all components are Shimano. The reason I ask is because I am new to cycling and I am having trouble indexing my ...
4
votes
1answer
133 views

Pulley for 10 Gear Derailleur for 9 Gear Chain

I am using a 10 gear XTR derailleur on a 9 gear cassette with a 9 gear chain and the tension pulley of the derailleur looks like needing replacement (despite teeth being very sharp it seems to work OK ...
3
votes
2answers
740 views

Biopace chain rings and front deraileur rub

Turns out my front chain rings are biopace, after I thought they had disappeared! I've got a problem with the chain rubbing the front deraileur at a certain point every rotation. I only get this in ...
2
votes
2answers
2k views

Sora STI Shifters with Deore

I'm building a touring bike and was interesting in using STI shifters, just wondering if this setup will work. Shimano Sora 3500 STI Triple 3x9 Speed Road Lever Set with Shimano Deore M590 Top Swing ...
1
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1answer
69 views

What derailer hanger do I need? (screw on derailer is bent)

I'm hoping for some help with repairing my bike. My derailleur hanger snapped recently. I think it should be easy enough to replace with the right advice. I have a picture of my previous hanger. It ...
1
vote
2answers
375 views

Shimano 105 FD-R7000-F front dereailleur chain rub

Recently purchased a new Cube Attain GTC 2020 road bike, it came with : Front Derailleur - Shimano 105 FD-R7000, 31.8mm Clamp Rear Derailleur - Shimano 105 RD-R7000-DGS, 11-Speed Brake System - ...
4
votes
2answers
165 views

Which way does this tension pulley go?

Took apart my Shimano Acera derailleur cage to clean it up a bit and didn't bother to note the shape of the tension pulley which is a bit thicker on one side. It seems like it would be shaped this way ...
0
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1answer
62 views

Shimano FC-5700 chainring with FD-5600 derailleur?

Currently my front chainrings are Shimano FC-5600 48/40 with FD-5600 derailleur. As I can not get new chainrings in FC-5600 I was asking myself if my FD-5600 supports FC-5700 53/39 chainrings?
1
vote
0answers
75 views

Adjusting rear derailleur

I have a 18 speed mountain bike. (Huffy) I recently had my rear derailleur replaced along with new shifters. Shifting in the lower gears is smooth and there is no noise when pedaling. However, when ...
4
votes
9answers
10k views

Fitting a 9-speed 11-50T cassette on MTB: which derailleur?

I'm trying to understand if its possible to fit a 9-speed 11-50T cassette (found one on Ali) on my MTB. The plan is to go 1×9. The problem is that I can't seem to understand the if a specific ...
2
votes
1answer
67 views

The shifter dosen't want to shift to the lower gear

This is a new shifter and derailleur but only can shift to the highest gear and won't shift back to the lower gear. How can I fix this? I already changed the cable housing but when I pull the ...
1
vote
1answer
87 views

Do simpler casettes have less issues with missing shifts?

On my new Trek Marlin with a 8 gear cassette, sometimes I try to downshift into the middle of the range of gears and it doesn't take (upshifting works fine). I can hear the gear clicking for a few ...
2
votes
2answers
3k views

Shimano: what's the difference between medium cage and long cage?

I'm looking at XTR Di2, and it seems the rear derailleur comes in 2 variations: medium cage and long cage. What are the two sizes for? Do they match different types of cassettes? What kind would I ...
0
votes
2answers
155 views

Tiagra 4503 front derailleur replacement

I have a bike with a 4503 Shimano setup (Tiagra triple, 9 speed). The front derailleur is broken. I can quickly get a 105 derailleur (5703) at the local bike shop. I just want to be sure that it is ...
1
vote
1answer
42 views

Adding lower gears to a nine speed Ultegra road bike with triple ring

My wife has a road bike with an Ultegra triple crank and a nine speed Ultegra 13/30 cassette. She needs a lower gear. Can the derailleur handle a larger rear sprocket? Ho large?
3
votes
2answers
499 views

Shimano 105 R7000 drivetrain makes crackling sound

I got an Shimano R7000 groupset and have the following problem: After degreasing my chainrings (54 – 36) and the cassette (28 – 11), the drivetrain makes normal noise. However after around 30km, the ...
9
votes
7answers
57k views

Can a road bike's rear derailleur be used for either a 9 speed cassette or 10 speed cassette?

I currently have a 9 speed 11-25T cassette on my road bike. I'm thinking about switching to a different cassette with more teeth on the climbing gear. The cassette I'm currently look at is a Shimano ...
0
votes
6answers
11k views

Can a Sora 9 speed rear derailleur short cage support a 12-36 cassette single chain ring 56T?

My 20 inch folder has a single chain ring of 56T and a 11-28T cassette, 9 speed Shimano sora 9 speed Rear Derailleur short cage. I want to change the cassette to 12-36T for some hill routes. Based on ...
0
votes
2answers
107 views

Can't shift to highest front gear

I've been trying to propely adjust front gears in my bike, but failed to do so. I can't make the front gear to shift to highest gear. I can make it work when testing the bike while it's lifted, but ...
1
vote
1answer
329 views

Shimano Tiagra - Install smaller front chainring

I recently bought a used Trek Checkpoint ALR4, with which I'm very satisfied. The gearing is ok so far for going on plane ground an light uphills, but when going on long and steeper hills it gets ...
5
votes
3answers
346 views

Installing a chainguard on a bike with derauiller

My pants always get caught in the chain (and wearing shorts is not an option). However, it seems that it's impossible to have both a derailleur and a chainguard so what is the solution? Can I just ...
0
votes
1answer
51 views

New front derailleur

I need to replace the front derailleur on my friends bike, this one is old and rusted, its a shimano FD M191. I've read a bit about what I need to know before I buy a new one but I just wanted to be ...
0
votes
2answers
108 views

I'm wanting to replace some parts

I did some work for my neighbor and he gave me some cash plus a road bike. I've used it for about 3 years but I was wondering if I could upgrade it a little. The chain slips off some times and it's ...
2
votes
2answers
406 views

SRAM Twist Shifter Paired with Shimano Rear Derailleur

I'm planning to buy an 11 speed twist/grip shifter from SRAM (because they're the only one who offer 11 speed twist/grip shifter) for my vintage Japanese ladies bike but I'm quite confuse if it will ...
1
vote
1answer
302 views

Using a Tiagra/105 front derailleur with R3000 shifters

The Sora 2x derailleur mech that came with my gravel bike broke in half. Is the 2x Tiagra/105 front derailleur compatible with the R3000 shifters? Thanks!
1
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1answer
97 views

When I am pedaling hard my chain jumps but doesn’t go to higher or lower gear

I have this problem with my bike when I put an amount of pressure on my pedals the chain kinda jumps but doesn’t change to a higher or lower gear and it usually happens when I go on 3X7 and 3X6 when I ...
1
vote
2answers
142 views

Compatibility between Shimano 105 crankset and Shimano Deore derailleur

I have a wild idea to replace a crankset on my Merida Crossway 500 (2014) (which is now SR Suntour NCX-FX-10s 48A-36-26 CG) with Shimano 105 5750 cCompact 10sp (switch from 3-speed to 2-speed). The ...
1
vote
2answers
98 views

Is Acera m4000 usable for trails

Can I use Acera m4000 on trails without damaging anything on my bike specially my derailleur
0
votes
2answers
172 views

What parts do I have to change if I want to change my derailleur to higher speed?

I want to change my derailleur from a Tourney TY-300 to an Altus M2000. What bike parts do I need to change? I want to change my derailleur because i mostly ride forest trails and I have heard the new ...
0
votes
2answers
130 views

What is the the difference between the new MTB Altus, Alvio, Acera?

What is the difference between these derailleurs. I want to change my derailleur and don’t know which one is better.
1
vote
3answers
313 views

Trimming Shimano FD-R3000 front derailleur

My front derailleur is a Shimano FD-R3000. I have been trying to adjust it following the ParkTool video at Basically it seems to be working OK now: the chain is not ...
2
votes
2answers
160 views

New build, front derailleur won't shift to outer cog

I'm building a new bike using a Deore T6000 front derailleur with Microshift BS-M10 bar end shifters. I'm having trouble getting the derailleur to shift the whole necessary range and am looking for ...
1
vote
1answer
188 views

Front Derailleur Chainring Size Tolerance

I'm rebuilding an old bike and have an existing crankset with 52-42-30 chainrings. I'm looking for a front derailleur. Most of the triple front derailleurs I've come across say they don't support a 50 ...
1
vote
0answers
83 views

What is the thread size/measurement of the derailleur barrel adjuster?

The barrel adjuster threads on my commuter bike's RD have been marred when the barrel adjuster got bludgeoned on a side crash and I want to chase the threads before screwing in the replacement barrel ...
0
votes
1answer
254 views

Front gears won't shift

I am very new to the bike maintenance, but want to learn how to do it myself. I have got a MTB which won't change the gears at front. It's basically stuck in the granny gear at the moment. I tried to ...