Questions tagged [derailleur]

Mechanism to move the chain from one sprocket to another.

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1answer
41 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?
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3answers
132 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 ...
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53 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 ...
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1answer
48 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 ...
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4answers
6k 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 ...
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1answer
56 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 ...
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2answers
234 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 ...
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2answers
239 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 - ...
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2answers
115 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 ...
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1answer
40 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?
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72 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 ...
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1answer
86 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 ...
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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 ...
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2answers
111 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 ...
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1answer
65 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 ...
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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?
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2answers
98 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 ...
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3answers
230 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 ...
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1answer
50 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 ...
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2answers
106 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 ...
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2answers
386 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 ...
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1answer
213 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 ...
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2answers
286 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 ...
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1answer
90 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 ...
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2answers
104 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 ...
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2answers
91 views

Is Acera m4000 usable for trails

Can I use Acera m4000 on trails without damaging anything on my bike specially my derailleur
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2answers
117 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.
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2answers
146 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 ...
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1answer
245 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!
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1answer
116 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 ...
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3answers
255 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 ...
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2answers
147 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 ...
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0answers
61 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 ...
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1answer
177 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 ...
4
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1answer
117 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 ...
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1answer
102 views

Is the Shimano 2303 crank arm and the 2300 crank arm the same?

I bought a Shimano 2303 crankset (52/42/34 triple) by mistake although I should have bought a 2300 crank If I remove the inner 34t, will it have the same structure as 2300 crank? By structure I mean ...
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1answer
74 views

Adjust deraillers after changing chain?

I just changed the chain on my Cube Acid 2X11sp mtb. I replaced the old chain with an exactly similar brand, model and length new chain (shimano). Is it NECESSARY to readjust and finetune the speed ...
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3answers
372 views

How to cut derailleur cable housing

This is a job I will do very rarely, so I would prefer to avoid buying a specialty tool, if possible. Unfortunately I don't own a dremel. Side cutters just mashed everything and did not cut at all. ...
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2answers
121 views

Deore RD M592 with old school shimano trigger shifter

I have an old school Devinci Coyote (2002) whose Alivio rear derailleur is having trouble shifting properly. I was wondering if I could replace it with a new Deore M592 without having to change the ...
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1answer
50 views

Maintenance as my Derailleur are squeaking due to the everyday use and carelessness shown while changing gears while the cycle is static

What extra steps should I take to extend the life of the Derailleur gears on my Btwin Rockrider 340 besides oiling them ?
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1answer
116 views

Derailleur play between cage and knuckle

I have a Shimano 2300 rear mech that's done about 10,000m over ~7 years. Lately I've had trouble getting clean shifting and find myself constantly twiddling barrel adjusters... I'm certain the cable ...
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1answer
282 views

Is there a front derailer type that can be mounted on a frame without braze on or fitting on the seat tube, or clamping?

As the question says, is there a front derailer type that can be mounted without having a fitting or braze on on the seat tube, or without clamping to the seat tube (because it's a weird shape, or ...
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2answers
190 views

Removing Derailleur Hanger from Devinci Spartan

So I'm in need of new derailleur hanger and bolt kit. My question is how to remove the hanger from my kinda frame (2018 Devinci Spartan). I'm used to just using a 5mm Allen key to unscrew two little ...
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1answer
810 views

Replacing Claris FD 2400 with R2000

My bike has a 2x8 speed Shimano Claris 2400 front derailleur and ST-2400 shifters. The FD is damaged. Can I replace it with the newer Claris R2000 FD? Shimano's compatibility guide indicates that it ...
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0answers
48 views

What's the type of polymer material used in friction bushings in Sram rear derailleurs clutches?

The friction bushing of an (older) Sram rear derailleur clutch is shown below. What type of polymer material are these made out of? I'm also interested to know what friction materials are used in the ...
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1answer
100 views

Front derailleur range suddenly has become very short

For a while when I was riding, there was a stiff feeling changing from medium to high on the crank. Yesterday it wouldn't change at all. I checked the adjustment of the High and Low screws by ...
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1answer
63 views

What front derailleur is this? Want to replace/upgrade

Hi I've bought a foldable bike and am thinking of changing the derailleurs to Shimano, but I could not figure out what type it is. The link the to the bike is: https://www.forever-bicycle.com/html/...
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0answers
224 views

SRAM eTap rear derailleur chain drop issue

I’m having an issue with my chain falling off the lower pulley wheel when (1) I hit a significant bump or (2) shift from large ring to small ring. But only in cogs 6, 7, 8. Any suggestions? I’ve ...
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1answer
238 views

Pros and cons of long and short derailleur cage?

I'm thinking of buying a new derailleur in the future, but I don't know what type of derailleur to buy, there's long and short cage derailleurs but is there any differences? I'm not sure if this ...
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1answer
106 views

Levels of derailleurs, freewheels and chains

What are the levels of derailleurs (Shimano probably) I know Altus and Acera but don't know the higher end ones. I am putting this on my Sondors Fat ebike. I will be using a 7 speed freewheel, and a ...