Questions tagged [derailleur-rear]

Questions referring to the derailluer responsible for moving the chain along the cassette

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1answer
48 views

Difference betwen two rear derailleur?

What is the difference between these two rear derailleurs? On the pictures it seems, that the "rotation angle" is different. https://bike.shimano.com/en-EU/product/component/tourney.html On the ...
3
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3answers
165 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 ...
2
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1answer
59 views

What is the difference between Shimano TZ50 and Shimano RD-FT55-SS

What is the difference between Shimano TZ50 and Shimano RD-FT55-SS? Shimano RD-FT55-SS Shimano TZ50 I understand, that both of them a very basic. (But it's the only options for rear derraliuer with ...
1
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3answers
186 views

Sram X5 RD limit screw

A RD was recently lightly smashed in. I straightened the derailleur hanger "by hand" and now it is "good enough" with some chain rub on the cogs. I set out to readjust the rear gears but am facing the ...
1
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2answers
113 views

Upgrading drive train for Cannondale Trail 6

I am planning to upgrade cassette, rear derailleur, chain rings and front derailleur of 2016 Cannondale Trail 6 I am looking for 11-36 or 11-38 10 speed rear and 2 speed front. Which model I need to ...
6
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6answers
4k views

Should I adjust rear derailleur as my chain seems too close to each other

I am learning to replace chain and freewheel (So far so good). After I put new freewheel and new chain on, the chain are too close to each other at the back now (as you can see in the photo). I think ...
11
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3answers
2k views

Busted my bike hub & derailleur (I think) - how bad is it?

I screwed up :( Background leading to my foolishness: I've been straining my bike quite a bit with hills and inclimate weather, and I haven't been able to find my maintenance kit since I've moved, so ...
11
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4answers
5k views

Why is a derailleur guard present only on more affordable bicycles?

Looking at http://decathlon.co.uk, I see a derailleur guard only on more affordable bicycles, e.g. this one. This one does not have it, and there seems to be no obvious way to install one. Are ...
2
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1answer
98 views

Derailleur hanger reverse

It looks that the derailleur hanger is reverse and I've tried to check for a new one to replace and it seems to be very rare. Is there any workaround to change it with a regular hanger?
1
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1answer
51 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
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2answers
64 views

How is the Bikight aluminium chain tensioner installed?

Bikight tensioner Is it perhaps installed next to the wheel, in the inner part of the frame?
1
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2answers
220 views

How can I tighten a loose rear derailleur onto the derailleur hanger?

I have recently tried to install an NX Eagle derailleur on my bike, but I could not tighten it onto the hanger tight enough to firmly fix it, so that it does not rotate around the pivot. In other ...
2
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2answers
275 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 ...
1
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1answer
99 views

Are Shimano jockey wheels compatible between groupsets, provided same speeds?

Recently my Shimano 105 (10 speed, RD-5700) jockey wheels have started squeaking during shifting, so they'll be getting replaced. I'm thinking about moving up to Ultegra jockey wheels for the ceramic ...
1
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2answers
85 views

Can we use a 9 speed rear derailleur on a 8 speed bike?

I have a Rockrider 5.2 with a Shimano Altus 8 speed rear derailleur. After an accident it started to malfunction. I planned on replacing it with a Shimano Acera M3000 but then it is marketed as 9 ...
0
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1answer
47 views

Rear Shimano Acera derailleur skips chain ring after replacing cable

I've had my Schwinn High Timber F5 mountain bike for probably 15 years and decided to replace all the cables. I've also already borrowed the rear wheel from my guest bike while I figure out how to ...
1
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1answer
96 views

Clicking sound coming from rear

In the middle of one ride my bike started making clicking sound from the rear. And I can't find the source since that. Here is a video of it: https://photos.app.goo.gl/RZKb7C3L76TbnMVF7 As many ...
3
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1answer
133 views

Chain jumping, unsure why

The chain likes to jump from the front sprocket, it is my impression that it makes no difference if the chain lies on the inner or outer cogs. Since I am unsure about the root cause I ask here for ...
1
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2answers
84 views

Noise + vibration while back-pedalling. Should I be worried?

Recently I noticed I'm getting a bit of noise and vibration through the drivetrain if I backpedal on the largest sprocket at a reasonable speed. There is enough vibration that when I'm stopped at ...
3
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3answers
481 views

50/34 compact with 11-32 10-speed Shimano 105 - will 11-34 make climbing easier or change chainring

As mentioned above...I'm running a 50/34 10 speed with 11-32 cassette but would like to change to a configuration that would make climbing hill easier. I live in a hilly area so every time I cycle, ...
0
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1answer
43 views

Derailler clearance on ERTO 406 wheels

i have a Cannondale Hooligan I on which I plan to remove the Shimano Nexus 3spd IGH and replace it with a derailleur gear system. This bike has ETRTO 406 aka 20 inch wheels. I want to use an 11 speed ...
0
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0answers
29 views

Rear derailleur not shifting first time from lowest gear

I am installing new cables and trying to reconnect the rear derailleur. I can the gears indexed perfectly on the way up but when I try to shift down from the lowest gear (biggest cog) it doesn’t move ...
1
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2answers
108 views

Shimano Sora rear derailleur install, U-ring on bolt

I had a slight bend with my mech hanger so I took off the rear mech to get the hanger out and fixed. Now that the hanger is fixed, I noticed a U-shaped ring around the bottom of the bolt on the rear ...
2
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1answer
366 views

Any compatible trigger shifters for el-cheapo TD ONE derailleur?

Bought a cheap RoadMaster MTB's as a first "grown up" bikes for my daughter. For the price (~$60 in a sale) they play nicely, but it shows the poor quality of the components. The biggest gripe is the ...
1
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2answers
299 views

Why are my Shimano 105 11-speed shifter/derailleur acting like they're 10-speed?

I recently got a pair of Shimano 105 shifters and a rear derailleur and put them on my bike. The front derailleur is a Shimano Tiagra, and the cassette is also Shimano. The cables are new, but the ...
8
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3answers
997 views

Rear derailleur got caught in the spokes, what could be a root cause

I have several problems on this bike. Here are the elements that have failed and other pieces of information: the chain has derailed past the largest sprocket the rear derailleur has rotated 180 ...
-1
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1answer
69 views

Are 9150 shifters and wireless compatible with 9100 Rear Derailleur?

I’m getting Di2 for the first time and have 9150 crankset, shifters, and front derailleur. I was hoping to leverage the wireless features to - do I need to get the 9150 rear derailleur or can I settle ...
0
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2answers
123 views

Chain skipping and loud noise when pedalling

Last year I changed old chain, all cables, rear and front derailleurs with new cheapest shimano parts. It has 7 speed cassette with tourney 6/7 speed rear derailleur. As summer started I took this ...
1
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2answers
93 views

Is Acera m4000 usable for trails

Can I use Acera m4000 on trails without damaging anything on my bike specially my derailleur
1
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3answers
336 views

Old time bike. Can I put a rear derailleur?

Hi guys, I am looking to build up an old timer bike and I have found this frame. Can I put a rear derailleur in that socket?
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1answer
134 views

Should I replace the bent Derailleur hanger?

My friend (also on a bike) collided with me while we were riding together. As a result of the collision, I now have a bent derailleur hanger. Should I replace it alongside the Derailleur? The bike ...
7
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2answers
915 views

What could have caused a rear derailleur to end up in the back wheel suddenly?

This is a similar question to What exactly happened to my rear derailleur? but with some significant differences. My bike had recently been serviced (about 3 weeks/500 km previously). All that had ...
2
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2answers
195 views

Is my rear shifter broken? Ultegra 6800 shifter, 11 speeds, 9 clicks, only 8 causing cable tension change

I was riding and noticed that I wasn't getting to the two or three smallest gears. Shifting along the eight or nine largest gears were fine though. I checked the limiters and the cable tension and ...
0
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2answers
123 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.
0
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2answers
152 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 ...
1
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0answers
69 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 ...
9
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5answers
1k views

Do oversize pulley wheels increase derailleur capacity?

Do the large custom pulley wheels and cages increase the capacity of a derailleur significantly? There are reasonably priced ones on E-bay with 16t pulley wheels. Every demo of these I've seen says ...
0
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2answers
136 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 ...
2
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2answers
807 views

What replaces Shimano Deore LX rear derailleur RD-M570?

They stopped making my current derailleur in 2003. I need to replace it. How do I choose a replacement part? A good answer will tell me a specific part (with part number) that will replace the RD-...
1
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1answer
221 views

SRAM Apex 1 doesn't upshift

I have a Boardman CXR 8.9, everything stock except for new mech hanger. It has a 11-42 cassette with a 11 speed 1x drivetrain. It's Sram Apex throughout, no mixing and matching like in other questions....
3
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2answers
869 views

Upgrading From a 9 Speed Sora Derailleur?

I bought a bike on Ebay which has a Sora groupset. The rear derailleur is noisy and jumps in and out of gears despite much tweaking. I've given up on it. What derailleur can I buy that will work as a ...
1
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3answers
178 views

Change Derailleur on CX Bike

I have a Giant 2013 TCX Advanced. It has a Rotor 3DF, 36/46 Crankset and a SRAM XG1190 11x28 cassette. I'd like to swap the cassette for an 11-40 or 11-42. The guys at Wolftooth said: "..derailleur ...
1
vote
1answer
153 views

Why did my rear derailleur fail in the middle sprocket?

Yesterday, I replaced my cassette and chain, having ridden the previous ones through the winter, and re-indexed my rear derailleur and checked the limit screws. Today, I had ridden slightly less than ...
1
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0answers
138 views

Can't get in first gear on Shimano ten speed block

Just replaced drive chain on mtb ... new cassette (Shimano 10 sp ) new chain (Shimano 10sp) new rear mech (Shimano 10sp long) and new (Shimano 10sp). I've set bottom stop tensioned cable and adjusted ...
0
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2answers
332 views

SRAM x5 derailleur fitting

So I am a complete novice when it comes to bike maintenance but working on a project mtb, old Saracen rufftrax. The rear derailleur was knackered so fitting a new SRAM x5, my question is do I need to ...
4
votes
3answers
196 views

I replaced my rear hub, but I'm not sure about how to attach the derailleur

I'm new to working on bikes and have been unable to find an answer via the internet, which, too be honest, is probably really simple. I got a bike just for riding around the city that had a cheap hub ...
2
votes
0answers
233 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 ...
2
votes
1answer
308 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 ...
14
votes
4answers
4k views

What options do I have if my rear derailleur breaks when I'm out on a trail?

I ran into an unfortunate situation earlier this week. I was out on a mountain bike trail, alone — just me and my hardtail. I'm pedaling, when I suddenly hear a CRUNCH and my bike stops. The hanger ...
7
votes
1answer
4k views

Eagle chain B-gap adjustment without plastic tool

SRAM makes this plastic tool for adjusting the B-gap on their Eagle derailleurs. My question is, if I want to measure this distance without this tool (say with a caliper instead), how should I go ...