Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [derailleur]

Mechanism to move the chain from one sprocket to another.

2
votes
4answers
158 views

Gears shift perfectly when suspended on rack, but not on the ground?

So I had recently solved some issues I was having thanks to the community. I re-tuned my bike on a suspended mount and everytning looks great. On the ground, all of the gears work smoothly except for ...
1
vote
1answer
107 views

Dura Ace 7700 rear derailleur will not fit into hanger

I am in the process of building up a Cannondale CAAD4 Saeco team frame using Dura Ace 7700 components from the same era of the frame. I am learning as I go along, so I apologize if these questions ...
2
votes
3answers
4k views

All gears shift smoothly, but won’t shift into 1st gear/large cog. Help?

So I was tuning my newly acquired bike today and working with all 8 gears on the rear derailleur. I managed to properly set the high limit screw as well as cable tension so all gears shift smoothly ...
6
votes
2answers
93 views

Can I use a narrowide chainring on a double rings crankset?

I would like to go touring using my narrowide chainring, but I would like as well to put a smaller chainring (the infamous Grannie) so that I could have it as a last resort in case of really hard ...
1
vote
1answer
152 views

How do I choose a replacement Derailleur?

I have a Psycle Werks downhill-bike and the derailleur got bent and cracked I need it to get replaced does anyone know or have any suggestions on where I can get a new one or what I should do?
2
votes
2answers
117 views

What type of rear derailleur to buy?

My cheap bike that I use to commute has been taking a lot of punishment (mostly from salt that's been used to melt the snow). I've been thinking about changing the rear derailleur (maybe not right now,...
3
votes
2answers
1k views

Why did Shimano eliminate the B tension spring on the latest rear derailleurs?

While working on my bikes (a road bike with Ultegra 6600 groupset and a MTB with Shimano deore XT M8000) I noticed that the upper pivot on the Deore does not freely rotate. Looking at the exploded ...
0
votes
1answer
422 views

Are there any rear derailleurs compatible with Shimano Tourney RD TX 80

I need a new rear derailleur for my Claud Butler Urban 200. I have looked at the old one and can see it is a Shimano Tourney RD TX 80 -7. I have found these quite hard to get and I am wondering if ...
1
vote
2answers
65 views

Replacing Motobecane 500 HT derailleur hanger

Can I just replace my rear derailer hanger in order to fix my derailer, is that an option? It looks like it broke and it definitely is detachable.
2
votes
1answer
587 views

Must replacement crankset have the same number of teeth?

I have a Giant Boulder 520 (1996) and I am upgrading it bit by bit. I bought a new Shimano 7 speed cassette 11-28T. Now, I want to replace my crank set, however I do not know which size to buy. Does ...
1
vote
2answers
361 views

Need help getting the right derailleurs for a vintage 12 speed double

What derailleurs do I need? 2x6 speed 52 and 42 tooth up front. Crank set is Shimano 600 I believe the bike is a Raleigh Road Ace. I came here a month ago asking to identify the bike and now I'm ...
7
votes
1answer
446 views

Derailleur On A Single Speed

Earlier today, I saw this bike with an absolutely bizarre drive-train. It looks like a single speed, but it has a derailleur on attached to it. The derailleur does not move horizontally, but only ...
1
vote
3answers
114 views

My chain slips despite new parts and tuneup

I use my bike for commuting, and so my knowledge of bikes is enough to make to work and back. I have a trek 4500 mb. I purchased it used, and from the very first day I have had this issue where the ...
3
votes
2answers
94 views

Replaced chain, now the chain falls onto the small chaining

I rode for a little while longer then I should have with my old chain, so I replaced the old chain and cassette. But now when I ride in the big ring, the drivetrain makes a horrible sound and the ...
12
votes
2answers
4k views

How efficient is string bike? Is this really a revolutionary bike?

Bicycles are getting evolved with good technologies or methodologies as the period changes. Now, this one bike, so called string bike has been introduced, which doesn't have chain, derailleur but ...
0
votes
1answer
99 views

Swapping out my front and rear derailleurs

I have been having trouble adjusting my gears correctly, so that they stop making noise and grinding in one spot or another. Every time I set the high, the low goes and then fiddling with the cable ...
1
vote
3answers
132 views

How do I thread rear derailleur cable through this adjuster?

this is a Lemond Zurich from around 1999 that I'm converting to 10 speed in rear. I can't get the cable to thread past this metal part that seems to be a fine adjustment for rear derailleur. I can't ...
1
vote
3answers
798 views

Rear derailer/chain skipping/shifting issues

I have a Shimano Tiagra derailer on my 9 spd cassette and it's been behaving really strangely. On the road, when I attempt to shift to bigger cogs, the chain will struggle to move up, sits on the ...
2
votes
1answer
67 views

Problem getting to big ring with XTR M960 Shift Lever

First, I don't think it's a derailleur issue. I already played around with the barrel adjuster at the shift lever, as well as the limit screws without success. The derailleur appears to be properly ...
1
vote
2answers
857 views

Can a gear change snap my chain?

On a ride yesterday I changed from my large to small cog on the front gear set and my chain instantaneously snapped. The snap occurred right on the point where the mech would have applied pressure. ...
0
votes
1answer
251 views

Bought used bike, Shimano derailleur does not work - how to repair or replace?

So I'm new to biking and I purchased a really good bike at a reasonable price. It's a 7 speed bike and as you can see the derailleur is messed up. I'm not sure how to find one that will work. I found ...
1
vote
2answers
1k views

front gear shifters not working

I made some adjustments to the front derailer on my road bike as when I was in the big front gear and smallest low gear the chain was rubbing on the front derailer outer edge. I followed guides on ...
4
votes
1answer
134 views

Carrera Virtuoso Rear Derailleur hanger bolt hole with HeliCoils?

So, I broke a Shimano Sora rear derailleur last night... Ouch, there goes a load of cash... What had happened was the hanger was bent slightly inwards, yet was functioning fine, so I rode it home. ...
1
vote
1answer
529 views

Need help identifying year of Ultegra rear derailleur

I am helping a friend sell triathlon bike (he recently bought a mountain bike and does not need to have more bikes sitting around), and so I am trying to gather more information around the bike to ...
1
vote
2answers
53 views

New Cable Anchor Bolt for SunTour Accushift Edge

I got a pretty good condition Trek 400 and it has SunTour Edge components. Unfortunately, the rear Accushift derailleur is missing a cable anchor bolt so I have no way of attaching a cable to it. Are ...
1
vote
2answers
149 views

Shifting down problem with roadlink

I have a caadx and recently changed my cassette from 12-28 to 11-36 using a RoadLink setup. I'm using an Ultegra 6600 for my rear derailleur, 11-36 deore cogs and deore 10-speed chain. The cogs,chain ...
1
vote
2answers
793 views

Convert Shimano Ultegra 6870 rear mech from short cage to medium cage [duplicate]

I would like to ride with a 11-32 cassette but I have a short caged Ultegra 6870 derailleur. Can I just swap the cage? Or are there other differences between the derailleurs? Cheers
1
vote
1answer
255 views

Will mountain bike front derailleur work with Shimano Tourney index shifter?

I am having trouble getting my Shimano Deore DX front derailleur to work with a Shimano Tourney index shifter. I would like to know if anyone else has made this setup work and am interested if anyone ...
3
votes
1answer
199 views

How to determine what kind of front derailleur can be used on my recumbent trike?

I need to replace the front derailleur on my tadpole trike. Unfortunately, I cannot find a brand name or other numbers anywhere on the derailleur, so I cannot just replace it with an identical product....
3
votes
1answer
402 views

Is it possible to mount a derailleur on this bike?

Is there a way to mount a derailleur on this bike?
1
vote
1answer
99 views

Squeaky coasting and back pedal

I recently bought a bike overseas rather than at LBS (no LBS had the type of bike I wanted). Now the bike makes a strange noise and I can't bring it in for servicing (buy from LBS when you can!). ...
1
vote
1answer
82 views

Mounting Shimano Acera Derailleur: Supposed Gap?

When installing a new Shimano Acera derailleur instead of an old, broken one (same model), I noticed that there is a little "opening" (marked in red) in the "frame" around the bolt that connects the ...
1
vote
3answers
79 views

Gear cable replacement

I need to change the rear mech inner cable on my Giant Fastroad slr1 (2016). The cables are run internally through the frame, but I need to know if it is a continuous outer sheath or is in sections, ...
0
votes
1answer
86 views

use with SHIMANO 105 FD-5504 Front Derailleur on crankset 26/36/48t [closed]

Can I use a SHIMANO 105 FD-5504 Front Derailleur with Crankset 26/36/48t? My Cogset Shimano HG-50, 11– 32t
4
votes
4answers
993 views

Shimano Tourney rear derailleur 34t support?

I've just change the freewheel for a 34T and I also changed my rear derailleur for a Tourney 7sp (i run friction shifters). I would like to have a bit more distance between the cogs and the ...
1
vote
2answers
6k views

Is 1x11 better than any 2X10? [closed]

I am upgrading from a Shimano tourney bike and newbie so please be nice to me .. lol :) I ride trails and easy bike paths and some roads. For cross country - Semi road/ Semi mountain type riding, ...
-3
votes
1answer
105 views

rear derailer broken [closed]

what model and number of derailer should I reorder for a replacement? Thanks, Dave
3
votes
3answers
4k views

Changing the cassette: is it necessary to change the rear derailleur and/or chain?

I recently moved to a city with a lot of steep hills so I'm looking to change my 11-28 cassette to this Shimano Tourney 14-34. I have a Shimano Tourney rear derailleur with the same number of gears (7)...
0
votes
1answer
809 views

What rear mech can I use with 105 shifter?

I would like to use a set of 105 shifters (10 speed), but I don't have a rear mech yet for them. I would like to purchase a mech that would allow me to use a big cog cassette, like a cyclocross or mtb ...
1
vote
2answers
765 views

Mix Shimano Deore derailleurs with Microshift shifter for Shimano

I have Shimano Deore derailleurs 3x8 and I am thinking about upgrading my system with a combined shifter/brake system, such as Microshift's SB-R483. Microshift themeselves states that this system is ...
3
votes
1answer
568 views

Barrel adjuster for sram gx rear derailleur?

I'm doing a bit of an unorthodox build right now. It's a specialized awol using a sram gx 1x11 drivetrain, but, because I'm running trp hylex discs, I've opted to use a sram s500 bar end shifter. An ...
0
votes
1answer
451 views

Removing the return spring of a rear derailleur [duplicate]

I am trying to turn my standard shifting bicycle into an automatic shifter using a motor to increase and decrease the tension in the shifter cable. The problem is that a lot of torque is required to ...
0
votes
4answers
568 views

Replacing rear derailleur on Murray 15 speed - Looking for parts

I have an old Murray Ultra Terrain mountain bike; it's 15 speed and I had trouble re-mounting the rear derailleur to the frame. It's broken now so I'm looking for a replacement but I'm unsure of what ...
2
votes
1answer
111 views

Is this front derailer snapped and/or bent?

I'm no expert but looks no where close to how it should be. I think a bit has snapped off? Also looks to be no where close to the outside of the biggest gear, (even when in that gear). It should ...
5
votes
2answers
1k views

Shimano MegaRange what type?

Can anyone identify this Shimano derailleur?
4
votes
1answer
438 views

Where does the name “B-Tension” come from?

Why is the "B-Tension" adjustment screw so called? Does it stand for anything, have there been A and C adjustments, or is there another reason for its name?
0
votes
0answers
85 views

shimano derailleur problem?

Grandson (11yr old)took his rear wheel off to clean & couldn't get chain tension. After looking @it myself the chain had completely detached itself from the lower idler sprocket on the rear ...
3
votes
1answer
960 views

Feasibility of coupling internal hub gear and derailleur

Price considerations apart, would it make sense to install together an internal hub gear and a derailleur? I was thinking of it as a viable way to avoid having the front gears.
1
vote
1answer
124 views

SRAM GX1 comparability with double crankset

I am considering purchasing a bike with SRAM's GX1 11x1 gearing but I would like to switch it to use a double crankset. Is the SRAM GX1 rear derailleur and cassette compatible with a dual crankset? ...
-1
votes
1answer
102 views

It takes several clicks of the shifter to go from smallest cog to next biggest cog, and I get hit the four biggest cogs

When I try to shift from the smallest cog to the next biggest one, I have to shift three times before it moves. Click one and I see the cable tightening. Click two and nothing, and click three and ...