Mechanism to move the chain from one sprocket to another.

learn more… | top users | synonyms (2)

2
votes
1answer
68 views

How to change front gearing

So I have a bicycle that has a single front gear, but many back gears with a derailleur. I am wondering if I change the size of the front gear (like significantly), meaning if I get a bigger front ...
2
votes
1answer
32 views

Front derailleur has too much resistance

I got a mountain bike on the cheap because of this repair. I'm not experienced with bike repair but hoped I could figure it out. The front derailleur, a Shimano STX, isn't shifting and it appears to ...
1
vote
2answers
54 views

Can a double rear derailleur work?

I was wondering instead of a long cage rear dearailleur (RD), what would happen if 2 rear short cage RDs were used instead? I realize the 2nd one might cause some mounting issues but assuming there ...
3
votes
2answers
91 views

Can I put a 10 speed 11-36 cassette on a Road Bike with a 50/39/30 crank?

I have a road bike with a Shimano 10 speed 105 group (2007). It has a triple 50-39-30 crank. I want to put a 11-36 cassette maybe the Shimano Deore XT CS-M771 10-Speed Cassette (Note: I can’t find ...
3
votes
2answers
40 views

Does Shimano XTR RD-M9000 SGS 11-Speed Shadow+ MTB Rear Derailleur Long Cage work with 10speed XT shifter?

I just bought a used bike with a broken 10 speed XT rear derailleur. Would a NEW Shimano XTR RD-M9000 SGS 11-Speed Shadow+ MTB Rear Derailleur Long Cage ( 182006158222 ) be compatible with 10 speed XT ...
1
vote
2answers
59 views

Downshifting problems

My wife has a bicycle like this. It is only a few months old and it gets light use on weekends on (smooth) some dirt roads. Recently it sometimes fails to downshift at the rear (i.e. shift to the ...
2
votes
1answer
71 views

Shimano Rear Derailleur Max Capacity

I need to get a new rear derailleur. My chain rings are 53/39 and my cogs are 28/11 so if I am not mistaken I need a total capacity of (53-39) + (28-11) = 31. I need a 11 speed compatible rear ...
1
vote
1answer
607 views

Why 9 speed front derailleur cannot handle 10 speed rear derailleur?

Some people are using non compatible components on their bikes. For example, using Tiagra's old 3x9 speed FD (4503?) with a 10 speed RD. And it works. So what is the point of saying "Dear customer, ...
0
votes
0answers
31 views

Frame - FD compatibility

I have a Merida Speeder 200 (2015). I am going to install a drop bar handlebar. I've bought sora 3503 brifters and a new front derailleur(sora 3503 too). My problem is, I didn't know anything about ...
1
vote
2answers
47 views

Rear derailleur does not shift down

I'm working on a bike where the right shifter was not working and I replaced it. it's a 7 gear cassette and the problem now is that the rear derailleur would not shift down past 3. When I manually I ...
0
votes
1answer
73 views

Rear derailleur needs a couple pedalstrokes to change gear

As of late I'm having some trouble with my rear derailleur. When I shift specific gears (most likely to happen to the middle gears), the rear derailleur feels like it doesnt have enough power and ...
3
votes
2answers
87 views

cable tension for Shimano 105 Front derailleur is very tight

I just got a merida scultura 400 and on the biggest chainring there's rubbing on the outside of the front derailleur cage. the only way that I can lower this is by tightening the cable by ALOT. is ...
1
vote
1answer
44 views

Front derailleur takes 6 clicks to shift gears, instead of 3 [duplicate]

I've just stripped all cables and chain from a badly kept bicycle and replaced them. I've correctly adjusted the rear derailleur and it works great. However, front derailleur which only has 3 gears ...
0
votes
1answer
65 views

Rear Derailleur won't move [closed]

I've changed my chain, and now when I shift into lowest gear, the rear derailleur won't move back out, and the cable goes slack. Any insight?
3
votes
1answer
135 views

Probably Screwed up my Derailleur shifting from 1-6 without pedaling

So I've had this problem for a couple months now, what happened was I was being stupid and seeing what would happen if I shifted 1-6 without pedaling... As a result, the shifting now is screwed... The ...
3
votes
2answers
124 views

Bike broke, strange parts came out, and doesn't know where to find exact replacement

My friend's bike broke and this thing came out... From various sources I found that it's probably a cog from deraileur. He went to bike shops but none could find a replacement that's for this exact ...
1
vote
1answer
83 views

What is the relationship between block, gear speed and derailleur? With Pictures

I am buying a new bicycle. The seller tells me it is "14 speed with 8 speed block, but the derailleur won't reach the lowest gear, so I will switch to 7 speed block". How many gears will the bicycle ...
4
votes
1answer
49 views

SRAM 2x10 shifter-derailleur combination

I am looking to upgrade parts on my Rocky Mountain Metropolis bicycle and want to go to SRAM products. Since I ride my bike everyday, I want the best SRAM parts. Looking at the Red line. That being ...
0
votes
4answers
82 views

Shimano Ultegra 6800…what do I need?

I'm gearing up for my first bike tour. I have an old motobecane cross bike, I think it's a 2007. I need more granny gears. Right now I have a 9 speed 12-26. I'm looking into the Shimano Ultegra ...
2
votes
1answer
232 views

How to prevent my front derailleur from rubbing on my back tire?

Recently I tried adjusting my front derailleur (Shimano 6800) so that it wouldn't rub my chain when I was in the highest gear. After playing around with the angle as well as the limiting screws, I ...
2
votes
1answer
73 views

Braze on or what sort of clamp on a Cinelli frame?

I'm seeing a ridiculously good local deal on a Cinelli Experience frame. I think I'll build it up with entry Campagnolo stuff (also seeing a deal). I am mildly confused about the front derailleur ...
1
vote
2answers
100 views

derailleur recommendation

I have been experiencing some issues with my rear derailer. I played around with it quite a bit to adjust it correctly. Finally after giving up, I took it to the shop and the guy showed me that the ...
1
vote
0answers
65 views

Campagnolo Cambio Corsa

Does anyone make this sort of system and sell it today, or is my only option looking for someone selling theirs? I've googled whether similar systems are being made today but found nothing to my ...
0
votes
3answers
104 views

gears overshifting issue

As I have explained in my previous post here I have changed my rear shifter cable and housing. But I'm still having issues with shifting gears smoothly. It overshifts at particular gear combinations ...
2
votes
1answer
57 views

Upgrading front drailleur

I have a Sora 2x9 front derailleur, and a Tiagra rear derailleur. I want to upgrade the Sora component. Do I need to be concerned about anything other than getting another 2x9 front derailleur? ...
2
votes
1answer
400 views

Which rear mech to replace sram X-9 10 speed 2x10

I have a Whyte 905 2011 with a 12-36 Sram cassette and an X-9 medium cage rear derailleur. It's not been attenuating well for some time despite efforts to adjust. The bike shop couldn't fix it. So i'm ...
4
votes
2answers
273 views

Rusty Front Derailleur – Replace or Repair?

My front derailleur has stopped shifting. Have a look at that rusty spring. Is it worth trying to fix, or should I just replace it?
1
vote
2answers
148 views

Is this cracked rear derailleur safe to use

So I've been building up a late 80's steel frame to a modern 11 speed, but still using downtube friction shifters. After doing a few runs up and down my street all felt OK so I decided to take it out ...
1
vote
3answers
116 views

Can I ride a triple front chainring with no front deraileruer

I've managed to strip the threads on my front deraileruer mechanism. Its off the bike now - can I ride it as-is until I locate a new front mechanism? The chain does stay on the front chainring where ...
6
votes
3answers
298 views

Why are derailleur jockey wheels commonly made of nylon?

Almost all derailleurs seem to come from the factory with nylon jockey wheels . What is the rationale for the use of nylon (rather than alloy or aluminum)? Is it merely weight savings (which would ...
0
votes
4answers
211 views

Derailleur/Gears Locks Up/ Freezes Up/Stalls

Hey guys I have a specialized mtb with the old oval chainrings and lately it's been locking up. When I start pedalling "hard" or faster the crank stops turning and then jumps forward a bit and ...
1
vote
1answer
59 views

New Shimano TX55 Not Shifting

I am having a problem with my rear derailleur. I installed as per instructions, adjusting the H and L limits to what I believe is proper. The problem I am having is that when I am in 7th gear, ...
2
votes
2answers
59 views

How to replace derailleur cable housing?

My derailleur cable housing (sheath) has exploded: I bought a new sheath of the exact same length: PROBLEM: Now I realize that unlike brake cables that are like []------, derailleur cables seem ...
1
vote
4answers
443 views

SRAM Force 22 chainset in an otherwise 10-speed SRAM setup

I notice that SRAM web site still lists "regular" 10-speed Force chainset as one of their products. However, my attempts to find it for sale online came up with almost nothing. It seems to be "barely" ...
5
votes
1answer
116 views

Can't push lever to shift into big ring, lever will not move all the way

I just installed a new 6800 groupset on my bike for the first time, and everything went O.K except for the front derailleur. I can't shift it into the big ring, if I push the lever to change to the ...
5
votes
3answers
288 views

Derailleur Pulley Wheel Compatibility

I can't find replacement pulley wheels for my derailer that are explicitly made for it. Should I be safe replacing them with a set with the same number of teeth (i.e., the same diameter) and targeted ...
3
votes
1answer
80 views

Shimano Sora 3500 (3x9) and Alivio front derailleur

Please help rebuild my bike :) I have Scott Sub 30 2011 http://www.evanscycles.com/products/scott/sub-30-2011-hybrid-bike-ec025449 and right now I would like to change shifters to Shimano Sora 3500 ...
0
votes
1answer
61 views

Going to one chainring: realign cassette farther in by redishing wheel?

The plan: move spacers around on the rear wheel to get the cassette about 8mm farther in for better range of access from the small chainring; re-dish wheel for proper alignment; shorten the chain a ...
1
vote
2answers
343 views

How to change 2x11 to 3x11 on mtb

Hey I was wondering how you would change a chainset from 2x11 to 3x11 on a Carrera Fury (SRAM components) Thanks
6
votes
1answer
121 views

Why are there so many types of mech hanger?

I have just stripped the threads on my mech hanger and I'm in the process of buying a new one. There are so many different types, even for one manufacturer, I was wondering what the reason for this ...
4
votes
1answer
73 views

Friction Shifter Rear Derailleur, Not Holding Low Gear

My 86' Raleigh 10 speed with friction shifters insists on not holding the lowest gear. If I hold it in the low gear, it will stay but the moment I remove my hand, it goes back up. I'm assuming it is a ...
4
votes
1answer
45 views

Using 9 speed Deore front shifter with 10 speed Ultegra front Deraileur

I am trying to build a bike out of all the spare parts I have in my garage. I found a 3x9 Deore front shifter, 3x10 Ultegra front d and crankset. Would they work together? By the way, I am building a ...
5
votes
2answers
152 views

Problems with front derailleur shifting on an inexpensive bike

I bought a cheapish bike (Nakamura) couple of years ago, and it generally serves me well. Main problem that I have is that shifting gears, especially front gears often gets out of tune. After only a ...
5
votes
2answers
120 views

Refurbishing everyday bikes

I'm looking to get 3 family bikes functioning as well as possible. I've replaced all the cables, but now want to get the gears as close to new as is sensible. All bikes old >10 years I would ...
2
votes
1answer
115 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 ...
1
vote
2answers
815 views

What is wrong with my Shimano 105 5800 front derailleur?

Background: I've installed a complete new 105 group (this bike is a brand new custom build) on a Civia Hyland frame. The rear wheel has a white industries CLD disc hub for the 11 speed cassettes. ...
1
vote
2answers
120 views

Chain rubbing on new derailleur and crankset

My bicycle is a Rockrider 520. I have replaced my front derailleur with Shimano Acera FD-M390 and my crankset with Shimano Acera FC-M391. But chain is rubbing inside of FD even when FD cable is not ...
2
votes
1answer
90 views

gear shifting after changing cassette

I've just changed a worn out cassette on my road bike (SRAM 8 speed 12-26T) and replaced it with a Shimano 12-25T 8 speed cassette. Now it looks like my gear shifting doesn't work. I can't get into ...
3
votes
3answers
192 views

Why is my bike slipping gears?

I have a 1997 Gary Fisher Tassajara that got a complete overhaul and tune-up at a bike shop a year ago. (to the tune of $180, but some of that was new tires- I'm the original owner) I ride between 4 ...
1
vote
0answers
29 views

Cannondale H400 1993 derailleurs

I would need to replace my derailleurs and I would like to upgrade both front and back. Front is triple 30, 40, 50 and rear is 13 throught 30. Both are Shimano Altus A10 with Rapidfire Plus ...