Questions tagged [derailleur-rear]

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

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1
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2answers
41 views

Rear derailleur does not downshift properly, shifts up smoothly

I can't get my rear derailleur to downshift properly. Especially in the middle of the cassette it'll delay a bit before shifting. Limits are set correctly. Since I can't explain this properly I ...
3
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2answers
2k views

Vintage bike, new chain

I've refurbished a vintage bike and I switched the old derailleur with a new medium cage tourney derailleur, the chain is also new and is 114 links long, which should be fine since me largest cog on ...
2
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1answer
398 views

Derailleur mounting position

I'm adapting a derailleur to a bike by welding it onto the dropout. By looking at other bikes it seems to me there is not a very strict specification for where the derailleur hanger goes. It seems to ...
4
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3answers
148 views

Bearings vs. bushings in rear derailleur jockey wheels - which should be more resistant to contamination?

This question came up in a forum I frequent. As background, many of us are familiar with ball bearings, as they are used in many places on bikes: the bottom bracket, the hubs, the headset, etc. Not ...
12
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5answers
2k views

How to remove the broken ball end of a small hex key that is now stuck inside the socket

While trying to replace the yoke of my derailleur I made the mistake of using a multi-tool hex key that was not able to handle the torque necessary for the task and snapped while the head stayed ...
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2answers
62 views

Measuring chain length on a 1x12

I'm installing a Shimano 1x12 setup and following the instructions. When measuring the chain it says to put the chain around the largest sprocket and largest chainring, measure to the zero point, and ...
1
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2answers
88 views

Weird whistling from the rear derailleur

Shimano Deore xt, 10sp. The noise happens only when I change gears for the short period of time when the chain is moving from one sprocket to another. While pedaling on one gear it works well and ...
1
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3answers
166 views

Shimano 11 speed component combinations

I want to upgrade my bike to a 1x system using a Shimano GRX-crank upfront. I however have a flatbar and can thus only fit flatbar shifters. What is the lesser evil? 11-Speed XT derailleur with XT ...
3
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1answer
213 views

What is going on with my derailleur?

I was on a ride a few months ago and while shifting, my chain came out of my derailleur. So this is a little confusing. Let me explain. The chain was resting on the outside of the bottom part of the ...
4
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2answers
440 views

Replacing Ultegra R8000 'long cage' derailleur (crash repair advice)

Today I did the unthinkable and crashed my pride and joy, a 2018 Specialized Roubaix comp. It's completely my fault I was commuting to work and in my pre caffeine state rode through what I thought was ...
1
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1answer
56 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
176 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
69 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
vote
3answers
195 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
176 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 ...
12
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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
votes
1answer
107 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
vote
1answer
56 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
67 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
662 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
771 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
272 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 ...
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2answers
174 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
67 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
104 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
votes
1answer
142 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
87 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
votes
3answers
840 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
49 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 ...
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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
160 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
487 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 ...
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2answers
472 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
1k 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
74 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
131 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 ...
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2answers
102 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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3answers
374 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
169 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
votes
2answers
1k 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
298 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
140 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
213 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
103 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
votes
6answers
2k 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
votes
2answers
188 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
votes
2answers
1k 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
359 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....

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