Mechanism to move the chain from one sprocket to another.

learn more… | top users | synonyms (2)

3
votes
3answers
219 views

Can Shimano 600 front derailleur handle 3 chain wheels?

I have a 48-38-28 chainwheel and I wonder if Shimano 600EX Arabesque has enough leeway to accommodate it. If you know another derailleur from the same era that could do it that would be also useful to ...
1
vote
1answer
142 views

Did the Giant Trinity A1 come with a derailleur hanger?

I am putting a bike together and have it all apart but don't see the derailleur hanger anywhere. Did I lose it or did the bike not come with it? If it didn't come with it, why not? Thanks.
1
vote
1answer
246 views

derailleur P-screw/B-screw does absolutely nothing

I know dérailleur adjustments are frustrating, but this is the 4th day i'm working on this... i stop working just before the rage kicks in and leave everything to continue another day :) The problem ...
2
votes
2answers
235 views

Adjusting a triple front derailleur after removing largest chainring

I have a touring/commuting bike with full Shimano 105 -- triple in the front. I just removed the outer (largest) chainring and replaced it with a chain guard. It's easy enough to crank on the limit ...
5
votes
1answer
220 views

Why do some people leave the chain sitting on the smaller sprocket when the bike is not used for a while?

I guess it is something related to the springs in the derailleur. But is it that important?
2
votes
1answer
3k views

What are my options for replacing/upgrading my MTB front mech?

I recently damaged my front mech, a Shimano Acera, top swing, bottom pull, triple chainring. The rear cassette is 8-speed. So I need to replace this front mech. The original Shimano Acera is probably ...
2
votes
2answers
196 views

Chain repeatedly tries to click into place without gear change

While pedalling, every 10 seconds or so, the chain on my bike makes the sound it makes during a gear shift - it "clicks", as if it's clicking into place in the new gear. But there is no gear shift ...
2
votes
1answer
327 views

Can I use friction shifters with a clutch style rear derailleur?

Can I use friction shifters with a clutch style rear derailleur like the 2014 Shimano Deore M615 Shadow Plus? Or does this put extra tension on the shift cable that will cause slips with a friction ...
6
votes
4answers
216 views

Electronic shifters

I have been reading alot about the electronic shifters that are out now, specifically the ones on TREK bikes. I was wondering if they are worth the price, and more importantly how do they perform.
4
votes
1answer
497 views

Derailleur guard on road bikes?

I live in an area with lots of debris, dodgy paving, and rain, and to make matters worse, I fall down sometimes (I know!). The main things that get damaged, of course, are the brake handles and the ...
2
votes
2answers
131 views

Derailleur twitching in low gears

I had a mild spill today on my new bike, which put the (Tiagra) derailleur cage a little bit out of line. With some bending and eyeballing, I got the two jockey wheels lined up 'almost' perfectly ...
2
votes
1answer
572 views

Shimano SLX Rear Derailleur with Microshift bar end Shifters

I need to replace my rear Shimano Deore derailleur since it got mangled up in an accident. I'm thinking of replacing it with a Shimano America RD-M662 SLX 9-Speed Derailleur. The bike I have is a 2013 ...
1
vote
2answers
165 views

My front deraileur needs adjustment after every ride

I have a Cannondale Women's Adventure 1 that I got this spring and have been riding on local (paved) trails every weekend. I started off riding about 6 miles a weekend and recently have progressed to ...
1
vote
1answer
906 views

Shimano RD TX55 Tourney TX 6/7 Speed Compatibility

I currently have a 7 speed bicycle, and recently changed my rear derailleur to a Shimano RD TX55 Tourney TX for a 6/7 speed compatibility. My shifter is Shimano Rapidfire for 7-speed. The current ...
6
votes
5answers
5k views

Rear derailleur shifting poorly, skipping gears

I've got a Shimano Sora on a 8-gear cassette, and have odd behavior and skipping, shifting under stress. This started with a trip to the mechanic for a tune up which replaced the chain. I had some ...
2
votes
2answers
466 views

Shimano Front derailleur

I am rebuilding a Trek 2005 model 6500 and my spec. sheet for the bike says it has a Shimano Alivio front derailleur. Where do I find the model no. that should be stamped on the part? I don't see it ...
3
votes
1answer
1k views

Can I run 2x10 XT Shifters on a flatbar road bike with 105 10 speed STI components?

I want to run 2x10 XT shifters on a flatbar but still want use the 10 speed 105 components of the road bike would there be any problems?
2
votes
1answer
125 views

Derailleur problems - rear mech slipping forward

I have been riding my Trek Fuel Ex 8 for a few years now, and as I have improved, I have been attacking more challenging terrain. I have started to notice a problem in my rear mech - the link arm ...
1
vote
1answer
119 views

Trek 6500 rear derailleur

I am rebuilding a Trek Mountain Bike model 6500 built in 2005. I don't see a model number on the Shimano Deore rear 8 speed derailleur that needs replacing. Is there a hidden model number somewhere ...
2
votes
2answers
167 views

Chain Slippage on MTB

This is my first time posting on this site so bear with me. I've got a 2009 Fuji Tahoe Comp 29er MTB with upgraded SRAM x.7 components and I'm having a couple issues. It is currently set up as a 1x9 ...
3
votes
2answers
567 views

(Automatic Bike Project) amount of torque required to change gears?

I am planning to build an electronically controlled automatic bike transmission for my senior design project. I'm personally more of an electrical guy, so dealing with the mechanics is somewhat new to ...
1
vote
1answer
444 views

How long does a shifter, rear mech and front mech last?

I am talking about absolutely dirt cheap components which are non-branded. In terms of number of kilometres how long do they last? The bicycle is ridden on city and country roads and maintained ...
2
votes
3answers
421 views

Slippage Under Load [New Bike]

I got a new bike a three or four weeks ago and have noticed the issue arise this last week or two. When I'm going up a hill (or any heavy load), my gears will slip. I don't think it's moving ...
7
votes
3answers
196 views

XTR Shadow Plus derailleur soft setting?

XTR Shadow Plus derailleur has a switch between a hard and soft chain tension. The difference is hardly noticeable when shifting. Is there ever any good reason to use the soft setting when the hard ...
3
votes
3answers
742 views

SRAM Rival front derailleur throws chain to the outside, even after professional adjustment

TL;DR: if you have a SRAM Rival front derailleur I'd love to know if yours looks "funny" like mine does--it's described in bold. I have a SRAM Rival groupset (from late 2011), including front ...
4
votes
2answers
3k views

What's a good, reliable mountain bike drivetrain (1x10?)

I'm thinking about switching my Salsa El Mariachi 29er mountain bike from singlespeed to gears. I love the reliability and simplicity of the singlespeed, but I've been doing more rides that involve ...
1
vote
3answers
5k views

Front derailleur won't spring back to lower gears

The front derailleur on my mountainbike sometimes gets stuck in high gears. When this happens and I want to shift down I can nudge it a bit with my foot and it will spring back to the lower gear. I ...
1
vote
2answers
1k views

I want to remove my front derailleur?

I'm new to biking only doing it since the past 3 months. I don't use my front gears much since i'm pretty tall and lower gears means going at a very high cadence for little output. so wondering if i ...
3
votes
4answers
733 views

Can I change a 3speed sturmey archer to a derailleur system?

Might be daft but can I change an internal hub for a derailleur option. I have an old bike which is slow but I do love it. I want to upgrade my running gear but the "chassis" is still tip-top. I don't ...
1
vote
2answers
473 views

I need help identifying my derailleur

I want to replace my rear derailleur shown in the photo above. I don't know what kind it is and and I was hoping someone could tell me which cage it is?
1
vote
2answers
1k views

Are Shimano R440 road flat bar shifters compatible with a mountain bike front derailleur?

The Shimano shifter flat bar series have the same cable pull length than the mountain bike shifters. Is this series compatible with a mountain bike front derailleur, Deore, for example?
2
votes
1answer
625 views

Selecting a front derailleur: parameters

Here is a sample Shimano FD. What does Maximum capacity: 22 teeth mean? Why are Top gear teeth constrained to 44/48T? Is there anything wrong with 46? What is Cable Routing: dual-pull type? And most ...
4
votes
1answer
1k views

How do I tell if jockey wheels need overhaul or replacement?

I am refurbishing a bike and am deciding how much to clean out the rear derailleur. It's in pretty good shape. But after I take off the chain, I tried spinning the jockey wheels with my fingers ...
3
votes
1answer
533 views

Can't change into the largest sprocket on rear derailleur

I bought my first road bike recently, and I've noticed I can't change into the largest cog/sprocket on the rear derailleur because when I pull the shifter the chain is pushed into the side of the ...
0
votes
2answers
2k views

Shimano 105 5600 derailleur compatability with 105 5700 11-28 casette

My current cassette is a 105 5600 12-27 the front is a 105 5600 53/39. I want to go compact so will the Shimano 105 5600 rear derailleur support the 105 5700 11-28 cassette?
3
votes
3answers
339 views

What are the most common causes for hysteresis in the rear derailler?

I have often seen derailleurs on cheap MTBs to degrade in performance by showing hysteresis. By that I mean that to switch to a certain cog, one needs to shift one cog further and then immediately one ...
0
votes
1answer
793 views

What tension should the front derailleur cable be when setting it up?

I'm attempting to setup my front derailleur. I've slackened off the cable, adjusted the L screw so the derailleur just clears the chain. What position should the adjusting barrel on the handles be set ...
2
votes
1answer
633 views

Can I run a SRAM road rear derailleur with downtube shifters?

Can I run a SRAM road (apex/rival/force/red) rear derailleur with downtube shifters? I though you might be able to mount the bar-end shifters on downtube, but it seems like they are a ratcheting ...
1
vote
1answer
245 views

First time buying parts ( derailleur, chain, rear axel, shifters) need help!

I have a 21 speed (3 front, 7 rear) NEXT bicycle ( model number 8568-49, year 2007.12.06) sitting in my back yard at the moment a few missing parts and I was hoping to get some help on what to get and ...
4
votes
2answers
3k views

How to trim down using Shimano Tiagra front derailleur shifters?

I have Shimano Tiagra 9 Speed shifters on my road bike. On my front deraileur, when I shift up (smaller chain ring to larger chain ring), I can control the amount my derailleur moves, therefore I can ...
1
vote
1answer
152 views

No more chainguide from Sram?

I remember I saw somewhere new Sram system that does not require chainguide. Don't remember the model, but could you please tell me more about it? How does it work?
-1
votes
1answer
148 views

I'm worried about my derailleur snapping. The chain isn't running around the bottom pulley, it's running next to it

I'm worried about my derailleur snapping. The chain isn't running around the bottom pulley, it's running next to it, scraping against the bottom pulley and the frame. When I change gears it makes a ...
0
votes
1answer
324 views

Slow switching up higher gears

I have a fairly new MTB and I'm currently trying to tune the gears. Currently I can change down gears pretty smoothly I.e. 6 > 5 > 4 etc but going up the gears is slow for the chain to switch cogs. ...
2
votes
1answer
293 views

What rear derailleur do I need?

I could really could do with a hand here, I'm currently restoring a old Raleigh Milk Race bike which has friction tube shifters fitted. I want to upgrade the rear derailleur but I'm not sure if I have ...
8
votes
1answer
208 views

Why do deraillers require a freewheel?

I've seen fixies with internal hubs, but a non-freewheeling rear wheel with deraillers seems to be unrepresented: | Freewheel? | Derailler? | Yes | No | ...
3
votes
2answers
684 views

Rear derailleur and front shifter are not indexing “together”?

So my rear derailleur and front shifter have stopped working together, my shift can shift once up and then nothing. My bike has essentially turned itself into a 2 speed. The shifter is a 2300 shifter ...
2
votes
1answer
2k views

Replaced Shimano Bottom Bracket, now front derailleur won't shift to largest gear

OK, so in my quest to get my old Trek 7000 ZX MTB running again after a long retirement, I am having an issue with replacing the bottom bracket. The bike came with a Shimano LP25 that is marked BC ...
3
votes
1answer
339 views

Direct Mount with top and bottom swing?

I want to buy a new frame that supports Direct Mount. Now I read that Bottom Swing is preferable for hardtails. At the same time, it was also mentioned that Bottom Swing is mounted higher onto the ...
5
votes
1answer
201 views

Are there mechanical advantages and disadvantages of various front derailleur styles?

In general there are: High clamp Low clamp Braze on Top pull Bottom pull And in particular, is any of those better choice regarding reliability and durability for touring bicycle.
3
votes
2answers
518 views

Shimano Alivio with Sora compatibility

I have Giant Defy 3 2012 and I want change handlebar from drop down to straight. I wonder if I can use Shimano Alivio M430 3-9 shifters with my front and rear Sora derailler. Thanks for advice