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Questions relating to the act or mechanisms involved with moving the chain from one gear to another.

6
votes
3answers
128 views

Cannot shift to lowest gear - chain too short?

I’m in the process of switching from an 11-25 to 11-32 rear cassette. The upgrade has involved replacing the cassette, rear derailleur (short to medium cage) and fitting a new chain. I can cleanly ...
2
votes
2answers
768 views

Cannot shift into lowest gear

I've been fiddling with my rear derailleur trying to fine tune it, because I just replaced my entire drivetrain (same components, but new) The problem that I'm facing now is that I can't seem to ...
1
vote
2answers
56 views

Front derailleur cable suddenly very slack (no shifting), not sure what's caused it

I last rode the bike on Sunday. Throughout the ride I noticed the front shifter (grip friction shift, Shimano) was feeling "looser" than normal (hard to describe, it didn't feel "right" and seemed to ...
0
votes
1answer
69 views

One extra position on front derailleur besides trim

After I changed shift cables, I have 4 positions on my front derailleur. WTF? I have a double chainring. I have a trim position as well, but after shifting to the big chainring, I can still move the ...
1
vote
1answer
127 views

Chain shifting when back pedaling

On my bike I found that when I backpedal, if the chain isnt perfectly straight, it is prone to shift to a more central gear. E.g would be if on the small chainring and the largest cog, backpedaling ...
1
vote
3answers
95 views

Rear derailleur moves to much for each click - tried everything

Two years ago I build a bike (flat bar) with SRAM 1x11. Around a month ago the rear-derailleur broke (guide pulley broke). I bought a new rear derailleur: Shimano 105 RD-5800-GS. After installation ...
2
votes
1answer
74 views

Parking a 3-speed internal hub in 2nd gear permanently

I recently bought a gently used, not super well maintained Columbia 3-speed bike from some time in the 80s. It has an internal hub - the dreaded Shimano 333. My eventual plan is probably to convert ...
4
votes
1answer
336 views

Downtube shifters won't stay in low gear on rear derailleur

I've finished a bike restoration today and it's my first time using downtube shifters. They work and will span the full range of gears but won't stay in the big cog on the back for long, the shifter ...
2
votes
0answers
43 views

Q-rings shifting chain not smoothly hitting the teeth

I bought my bike with Q-rings a while ago. Recently I switched to NoQ rings because I wanted to make a better comparison (hadnt ridden round rings in 2 years). This weekend i re-mounted the Q-rings ...
2
votes
2answers
80 views

Problems with shifter?

I have problem with my gears. How can I fix this or where I can find wire like this?
2
votes
0answers
87 views

Friction shifter for Rohloff speedhub?

This is might be trivial for someone who actually have a one, but after countless hours reading and watching about the Rohloff speedhub I can't answer this question myself. AFAIK the OEM grip shifter ...
2
votes
4answers
142 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 ...
2
votes
3answers
2k 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 ...
2
votes
1answer
97 views

pedaling gap after shifting internal hub

I have a 3-speed internal gear hub. After switching between gears no pedaling is possible until I rotate the chainring about a half turn. Is it normal or did something go out of adjustment?
9
votes
5answers
3k views

My bike goes up one gear at a time, but down two: is this normal?

Just over a year ago I bought a new bike (a Giant Escape 3) with a trigger gear system - my previous one had a grip-twist to change gears. After riding and experimenting for a while, I was able to ...
3
votes
1answer
288 views

Can't shift down from 50T with clutch on, but can shift down with clutch off, why?

Can't shift down from 50T with clutch on, but can shift down with clutch off, why? I'm using sunrace 11-50 and XT RD-M8000 (SGS), finished setting up everything for absolutely perfect shifting, then ...
4
votes
1answer
757 views

Shimano 7 speed with click shift not enough range. Can only get 4 of 7 gears

The indexing shifter (lever for down, click for up type) doesn't seem to have enough range to cover the entire 7 gears. Limiting screws are all the way out. If I adjust the cable I can get 4 lower ...
5
votes
3answers
828 views

When shifting both left and right shifters, what's the preferred sequence?

My technique has always been "easier, then harder". When switching to the big chain ring, I first downshift at least twice on the right (easier) and then upshift on the left (harder). When switching ...
2
votes
1answer
155 views

Electronic shifting for planetary gear hub

Gear hubs are nice, but after getting a Rohloff I realized that shifting is extremely difficult and requires lots of effort. So this got me thinking: do electronic shifting systems exist for gear hubs?...
0
votes
2answers
141 views

My chain slips when I use an inappropriate gear, and the chain loosens when changing gears (most of the time). What should I do?

As the title says, it seems like my chain slips way too often. This happens if I pedal hard, go uphill, or ride at an inappropriate gear (even when not pedaling hard). Besides that, it seems like my ...
1
vote
4answers
197 views

Why does shifting under power affect shift quality?

I recently was attempting to shift up a hill and observed that The shifting levers on the handlebars displayed significant resistance to my pushing them. Despite several rotations of the crank, the ...
1
vote
3answers
483 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 ...
5
votes
1answer
198 views

When shifting gears, how does a bike chain catch the new cog so reliably?

I think I understand the derailleur mechanism pretty well, yet I still find it surprising how the chain catches on the new cog so reliably. Is there something I'm missing? Is it just with the proper ...
0
votes
2answers
64 views

Fixing balky front shifting

I've got a Campagnolo Chorus 2x9 drivetrain on my bike. Lately I've found that shifting to the big ring is very difficult: The only way to get it to shift at all is to make a simultaneous front and ...
1
vote
2answers
127 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 ...
0
votes
1answer
193 views

9 speed SRAM X5 trigger shifter only clicks 5 times and skips through a lotta gears

Mongoose SX 6.5 26" Modified Was originally a MTB but made it a Frankenstein hybrid build. Just made the modifications this weekend and I thought it would go over smoothly. Got parts from a Novara ...
1
vote
1answer
104 views

What could be preventing my bicycle from shifting gears?

I recently purchased a second-hand bicycle. I found that the back wheel was not spinning freely, and was rubbing against the disk break, so I adjusted the position of the wheel to the right. After ...
1
vote
2answers
127 views

What is the difference in shifting performance between Campy rear derailleurs?

During the past few weeks, I've encountered a couple of times the statement that there is no difference in the shifting performance across different tiers of Campagnolo rear derailleurs. I.e., one ...
1
vote
2answers
392 views

Double up-shift on Sram X01/XX1?

For over a year now I'm using Sram's 1x11 X01 drivetrain. It works great, but the only thing I miss from my 3x9 XTR is the double up-shift on the rear derailleur. With 11 gears it only makes even more ...
1
vote
2answers
602 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 ...
5
votes
2answers
4k views

How to correctly adjust 3 speed shifter

I have a second hand chapelli 3 speed bike. Everything was fine until I got a flat tire on my back wheel. I was able to figure out how to get the back wheel off (after a bit of Googling), by ...
3
votes
1answer
862 views

Is there a difference of spacing between cogs on a 7 speed cassette vs a 8 speed cassette?

Is there a difference of spacing between cogs on a 7 speed cassette vs a 8 speed cassette? When I got a new wheel (upgrade from freewheel hub), I tried to get a 7 speed cassette (SRAM) for it, but ...
3
votes
1answer
485 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 ...
-1
votes
1answer
89 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 ...
1
vote
1answer
76 views

21 speed front gears go 1 to 2 to 3 and 3 to 1, but not 3 to 2

My front gears can move up just fine, but to go from 3 to 2 I have to go 3 all the way down to 1 then up to 2 for the chain to engage. Doesn't even seem to try on 3 to 2.
5
votes
1answer
553 views

Replacing broken nexus 7 gear hub with second hand one

My previous nexus 7 gear hub completely broke down and i decided to replace it with a second hand wheel. I took my bike apart, and used the sprocket gear of my old wheel on the new one. After that i ...
1
vote
1answer
68 views

inconsistent STI indexing

I have an 8 speed system with 12 year old Sora STI's. Other components of system have been recently replaced. All shifts up and down are fine except that 4-3 does not shift, only produces gear ...
5
votes
3answers
3k views

Shimano Ultegra 6800 front derailleur tension problem

I'm building up a 2015 Salsa Colossal Ti with a full Ultegra 6800 groupset (though with the RS685 hydraulic shifters). I'm having an issue setting up the front derailleur. I've followed all the ...
1
vote
1answer
292 views

Name for bracket used for holding shift cables in place on down tube

I've got a '70s-era Motobécane† road bike which doesn't have any actual eyelets brazed on for guiding shift cables but instead has a strange chromed "bracket" which attaches onto the down tube ...
7
votes
1answer
285 views

How exactly does cross-chaining accelerate wear?

I've heard all over that cross-chaining "wears your drivetrain out faster". I must admit I'm not 100% convinced that this is true, because I can't see a scientific basis for it. Could I get an ...
3
votes
3answers
2k views

Can a 11-speed derailleur be used with a 9-speed shifter?

Can a 11-speed derailleur be used with a 9-speed shifter I want to buy a 11-speed derailleur and have a 9-speed shifter so will they work together or not?
5
votes
2answers
486 views

Info for replacing a shift cable housing

I have a Raleigh MT 200 - 1994. I lost the segment of the housing for the cable of the rear derailleur (Shimano STX) that goes to the shifter, see red in the image 1. I would likely purchase a ...
1
vote
2answers
127 views

Why can my rear derailer no longer shift between all 8 gears?

After a low-speed collision with a car. my LBS replaced my damaged rear derailer. Shortly after, I replaced chain and cassette (from a SRAM bundle) and the front chain ring myself, as I've done ...
2
votes
1answer
156 views

Why does my bike left gear shift have more than 3 combinations?

I just bought a new bicycle and I just read and watched some videos of how mountain bike gears work. I noticed that the bike is a triple but the left gear shifter has more combinations than 3 (like ...
4
votes
1answer
107 views

Very sloppy shifting on smaller cogs (BSO)

I have very few complaints with my BSO, but this is one of them. My rear derailleur seems to hold the same 'up and down' tension across all the cogs. So when I'm on the first couple of cogs (32 and ...
3
votes
2answers
177 views

Rear derailer shifts fully only in middle of cassette and loses alignment with cogs over time

I didn't even realise it, but I had been using the double shift Rapidfire feature on shimano's mtb sti's to move the chain only once up the cassette. Thats two clicks for one change. Its only when I ...
0
votes
1answer
169 views

Solving gear hunting?

Interesting problem on the only triple chainring bike I've ever owned (I've never run into this problem on a double chainring ever). It has a 9-speed cassette. In the middle chainring, the middle 3 ...
1
vote
1answer
137 views

Incrediably stiff rear downshifts

I have a '13 Trek MT-60 for my son that uses a Shimano Tourney derauilleur with a 6 speed revo shifter. The problem he had was that the shifting with it was incrediably stiff, even for an adult. I ...
3
votes
2answers
86 views

Inconsistent shifting issues after changing wheel

I recently got myself a cheap pair of 650B Wilkinson wheels to train on. After doing 50+ miles over 8 weeks, I'm having shifting problems when I change over to my WTB knobbly. The shift is ...
1
vote
2answers
107 views

Shifting Problems

I have a bicycle by the name of "Indarciclo" that I purchased for $20. It has worked excellently for the last 2 years until now. It has 7 speeds, with a under-the-bar shifter. Now, for some reason it ...