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

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5
votes
1answer
156 views

How to install the cable for this rear derailleur?

For two months so far I'm trying to fix my bike. I bought a used bike and the shifting was not good. So I bought new cables and tried to make the rear derailleur work, but without any kind of luck. ...
2
votes
2answers
563 views

Is a Shimano Dura-Ace 7800 rear derailleur compatible with a Dura-Ace 7900 11-27 cassette?

Is the Shimano Dura-Ace 7900 10 speed cassette with a ratio of 11-27 cassette compatible with a dura-ace 7800 rear derailleur? Some people say its fine but more important to me is what Shimano says ...
2
votes
2answers
844 views

Does the Shimano Tourney TX rear derailleur support an 8 speed cassette?

I would like to upgrade to 8 speed. Does the Shimano Tourney TX rear derailleur support an 8-speed cassette.
2
votes
1answer
267 views

Shimano SIS Rear derailleur fixing problem

I have the shimano sis rear derailleur which needs fixing. I took it off the wheel while I was fixing the puncture in the rear wheel. Now I am not able to fix it. It keeps coming off when I am ...
2
votes
1answer
132 views

Changing Crankset on a bicycle

I have a fixed gear BTwin My Bike White. I need to upgrade but the resale value is too low for it. So I was thinking of adding gears to it which might click the real deal for me. Can I convert it ...
2
votes
2answers
85 views

B-screw hitting derailleur hanger

I have a Schwinn Super Sport circa 1966, that came to me as a single speed, so I have never seen a derailleur on it. When I put this SunTour derailleur on it - mid 70s I think, came off a Peugeot - ...
2
votes
2answers
602 views

Bike pedals turning when coasting (not a fixed gear)

My pedals are moving when I'm coasting, and if I try to stop them the upper segment of the chain gets really loose, and the rear derailleur does this thing, where it gets almost horizontal, and then ...
2
votes
1answer
433 views

Shimano 105 5800 mech compatibilty with 5700 shifters

I have purchased a Shimano 105 5800 11 Speed Cassette 11-32, 116 link chain (CN- HG600-11) and longer-caged 'GS' rear derailleur (RD-5800-GS) to replace my original 105 10 speed 5700 series mech. Can ...
2
votes
3answers
176 views

Jockey pulley (upper jockey wheel) suddenly not engaging with the chain when in the three largest (easiest) cogs on the big ring only

The gears work fine across the whole cassette on the inner ring but all of a sudden the chain has stopped engaging with the upper jockey wheel when in the big ring and three largest (easiest) ...
3
votes
1answer
195 views

How to find the cage length of a rear derailleur?

I need to replace my rear derailleur. I've been looking at a few ones on eBay, however, my issue is that the seller does not know the size of the "cage". Specifically, I have a Shimano Tiagra RD-4400 ...
1
vote
2answers
4k views

Bike won't shift into 2 largest rear cogs (lowest gears)

I replaced the rear derailer on my bike after Schwinn sent it to me. The old one had a bent piece. I can't shift onto the largest 2 rear gears. I set the shifter to the lowest setting, but the chain ...
1
vote
2answers
53 views

Trying to find Derailleur hanger for Triace A310

As you can figure out from a quick google search, this bike almost does not exist. Finding info for this bike has been near impossible. If you can direct me to any info about which hanger I need to ...
0
votes
1answer
276 views

Campagnolo Ergopower inaccurate shifting on high and low cogs

I replaced the G-Spring and G-Spring carrier on my 9 speed Chorus Ergopower. Now it is shifting better and the clicks are sharper, but I can't adjust the derailleur to shift good on all gears good. ...
3
votes
1answer
145 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 ...
-1
votes
2answers
164 views

Rear derailleur mess up PLEASE HELP. Im helping a 64 year old cancer patient. Very important

The old man next door painted his bike today. He took the deraileur off the bike to do so but did not remove his chain. The chain does not have a master link and neither one of us can financially ...
2
votes
2answers
459 views

Shimano sora shifter no longer shifts

On my commute yesterday, I noticed that my right shifter was no longer 'clicking' when shifting my rear derailleur up into a larger sprocket. It still shifted fine, but I noted that I should look into ...
1
vote
1answer
332 views

Is it normal for a Derailleur pulley to “wobble” a little bit? Or does that mean it's time to replace

I'm trying to repair my bike for the first time, so i'm learning. It's a shimano deore set for a flat handle road bike. It won't stay in gear --- it keeps shifting while i ride, especially in the ...
2
votes
6answers
362 views

Can't downshift rear derailer

I'm trying to fix my wife's bicycle which sat out all winter. I can't get the rear derailer to downshift from the twist grip shifter. I have inspected and cleaned and lubricated the cables, nothing ...
3
votes
1answer
213 views

Sachs- Huret derailleur (re)installation

Sachs - Huret derailleur installation So the learning curve continues on the '85 Peugeot P-16. The main lessons are to take pictures and time getting each thing done. I have the rear derailleur hung....
2
votes
1answer
484 views

Shimano sora 9 Speed rear derailleur capacity

It's 37T here http://bike.shimano.com/content/sac-bike/en/home/components11/road/sora1.html But 31T here http://www.wiggle.co.uk/shimano-sora-9-speed-rear-derailleur-1/#prodbullets Why is the ...
5
votes
2answers
755 views

Replace rear deraileur without breaking the chain

I currently have a Shimano Dura Ace 10 speed rear derailleur with a 12-25 cassette. For some hilly rides I'd like to change to a 12-30 cassette. The maximum the rear derailleur can handle is 28, so ...
0
votes
3answers
473 views

Why does my Rear bike tire slow down when Pedaling?

I just replaced a flat on my rear road-bike tire. I had also tried to replace the rear axle, By removing the axle completely, to a quick release lock but realized the axle that had been installed with ...
0
votes
2answers
401 views

Rear derailleur hitting chainstay (video in the post)

I filmed a little video of the process: https://youtu.be/ejJsIWrrFTU Does anyone know how to solve the problem? Apart from attaching piece of rubber to the chainstay? It is really annoying, because ...
4
votes
2answers
204 views

former weightlifter turned triathlete repeatedly breaking hanger

Every year, it seems I am on a training ride 5-10 miles from home and while torquing up, I snap the hanger throwing the rear derailleur into my spokes and locking up my rear wheel. I am 205lbs and 5'...
1
vote
2answers
372 views

Rear derailleur shifts all gears at once

I've got Campagnolo Veloce gear system and I recently changed my worn-out rear cassette to a new one. Since then I've experienced issues when shifting to higher gears. When I shift, the cable moves ...
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
1answer
171 views

Can any MTB rear derailleur be mounted to a Scott type 1 MTB derailleur hanger?

Can any Shimano MTB rear derailleur be mounted to a type 1 (206375) Scott derailleur hanger. I have a type 1 derailleur hanger with a Shimano STX rear derailleur mounted and like to mount a Shimano ...
3
votes
1answer
376 views

Using PTFE spray on rear derailleur springs

Have noticed that the rear derailleur springs and pulleys are picking up lots of road gunk. I use a wax for the chain and as this breaks off I can see it getting stuck on the pulleys. So after ...
2
votes
2answers
366 views

Rear derailleur cable housing length

I've cut my first cable housing using this ParkTool page as a guide. The thing is, I think it's a bit too long. Can I safely shorten it or the length is good as it is now? Update: 7.5cm less, is it ...
3
votes
1answer
654 views

How to prevent shifting issues due to derailleur or cables freezing in cold weather

It's been fluctating in temperature between 0F and 20F in my area. I've been riding my 1x9 geared mountain bike to and from work. However, due to the cold weather, I'm having issues shifting. It ...
0
votes
1answer
264 views

Did i buy the wrong derailleur? (mech hanger/direct to frame)

I'm a total newbie with bike repair and I can't figure out this hanger/direct to frame business. Googling doesn't help much. Here is a picture of the current derailleur and the new one I bought. The ...
1
vote
3answers
230 views

Rear shifting - Unable to shift to toughest gear

I was adjusting my rear shifting following the advice in this video: It was when I took off the wire tension and screwed the high limit all the way out that the chain ...
1
vote
1answer
618 views

What causes the rear hanger to snap off?

I have a Specialized Allez Elite road bike, purchased brand new in June this year. So far I've covered around 300 miles in total on it. During my ride yesterday, as I was going up a slight hill, I ...
0
votes
2answers
547 views

SRAM X4 MTB Rear Derailleur H-Limit screw maximum open, but still on 7th Cog?

I own a 6 months old Rockrider 5.2 mountain bike. Everything was great until recently I noticed that the Rear Derailleur of my bike doesn't reach the highest gear cog, which is 8th. Its always stuck ...
0
votes
1answer
841 views

Are new Shimano shifters compatible with old 600 Arabesque derailleurs?

Does anyone know if I can use new gear shifters, especially integrated road bike shifters, with vintage a Shimano 600 Arabesque rear derailleur? Will the pull ratio of the shifter and derailleur match?...
-1
votes
1answer
119 views

Adjust Rear Derailleur

10 speed Ultegra CS 6600. When I march up and down the gears on the stand it shifts fine. If I test it on the road and march up down the gears it shifts fine. But on a ride if I have been coasting ...
1
vote
2answers
3k views

Realign the cassette gears after removing the rear wheel

I took out my wheel for a puncture and when the wheel went back on the bike the gears were out of line, a lot of skipping and jumping. What is the best way to get them back in alignment (must be ...
3
votes
2answers
342 views

Derailleur hanger moves when tightening quick release

I have an old Trek T-900 tandem that my wife and I ride quite a bit. It's got an 8-speed rear setup. It's a standard (tandem) 145mm rear-spacing with matching hub, but tightening down the quick-...
3
votes
3answers
2k views

Rear index shifting not staying in middle gears

I have replaced a chain (SRAM PC 830) and 7 speed freewheel (Shimano MF-HG37) on the back of my daily commuter bike about 300 miles/ 3 weeks ago with the same models. The old parts lasted me 4000 ...
3
votes
1answer
1k views

Misadjusted B-screw: symptoms?

What are the typical symptoms of incorrectly adjusted B-screw in the rear derailleur? How does it manifest itself when shifting? Obviously, if the cage pulley interferes with the cog, the problem is ...
1
vote
3answers
433 views

Suitable rear mech for Megarange cassettes

I just bought an 11-34T 8 speed rear cassette and noticed that it is a Megarange cassette with a substantially large jump between the lowest and 2nd gears. Will this work with my existing Alivio ...
0
votes
1answer
249 views

Is this a short cage or long cage rear derailleur? [duplicate]

Is there an easy, objective way to tell?
1
vote
1answer
664 views

Shimano Tiagra Rear Derailleur - Barrel Adjuster Won't Screw In

My rear derailleur barrel adjuster has unscrewed completely and now I can't get it back in. Is it likely that I've damaged something here, or is there some special technique to screw in barrel ...
6
votes
3answers
26k views

How can you identify if a Shimano rear derailleur is medium or long cage?

I have a 2013 Shimano XT rear derailleur. It is part of a 2x10 drivetrain. How can I find out if it is a medium or a long cage one? The picture below shows the derailleur.
5
votes
2answers
427 views

How can I fix my rear derailleur's B-tension adjustment?

I've noticed that my rear derailleur (Ultegra 6700) will not return to where I've set the B-tension adjustment. Pulling it away from the hanger means it will just stick there, or maybe move back a ...
2
votes
3answers
3k views

Rear wheel rubs frame after tire change

I recently changed the rear tire and paid no attention to the original working state of the rear derailleur. After a miserable attempt at resembling, I lost what I now think was the Derailleur bolt ...
1
vote
1answer
237 views

Chain Slipping?

I am not the most knowledgeable when it comes to bikes so please bear with me. I have a Claud Butler and after fixing a puncture I decided to ride it. As I was riding, I could hear a sort of rattling ...
0
votes
1answer
388 views

What exactly happened to my rear derailleur?

I had installed my front derailleur and was adjusting the high/low when I noticed my rear derailleur was hitting the spokes of my wheel. Suddenly, I saw a screw pop out and then my derailleur popped ...
0
votes
1answer
46 views

difference in rear hub widths?

I've recently upgraded my road wheel set on my cross bike to a set of hope hoops which came with hope mono rs hubs. At first they required me to adjust the rear dérailleur so that the shifting was ...
0
votes
1answer
867 views

shimano 14-34t megarange casette not shifting to first gear

I bought a new deraluier and it wont shift to the first aka largest aka closest to the wheel / dropouts gear its about two inches too high. So it (the deraulier) knocks into the largest easiest cog. I'...