All Questions
Tagged with derailleur shifting
57
questions
37
votes
13
answers
24k
views
Is there such thing as an automatic transmission for bikes?
Has anyone ever designed or manufactured an automatic transmission (or automatic shifter?) for cycling?
I imagine such a device would automatically change the gearing to allow the rider to maintain ...
- 1,321
14
votes
6
answers
6k
views
Mechanic says not to use top three/bottom two gears or the chain will throw
I just bought a BTwin Fit 5, all stock, fresh from the distributor, Decathlon. Took it for light pacing at the store and things seemed OK. About 100 metres out the door, I shift up to the top end of ...
11
votes
7
answers
61k
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 ...
- 113
6
votes
3
answers
1k
views
Shifting direction is different for front and rear shifters
I have been riding singlespeed and 1x setups for decades. The last time I had a front derailleur was over 30 years ago, and the shifter was on the downtube then, and I don’t have any memory of how it ...
- 3,456
6
votes
1
answer
931
views
Shifter cable broke in the shifter and now the end is stuck in the shifter
So The end of my rear derailleur shifter cable is stuck in the shifter. Is it even possible to get out? See the picture below. Shifting up and down doesn't really do anything to its position.
Edit: I ...
- 63
6
votes
3
answers
11k
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 ...
- 61
6
votes
1
answer
7k
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 ...
- 18.3k
5
votes
1
answer
9k
views
My bike's gears won't shift properly or at all
Firstly, sorry if this has been asked before but I don't know much about bikes. I bought my bike from big w (fairly cheap beginners bike, but I am happy with it). It has two shifters, one on the left (...
- 51
5
votes
5
answers
4k
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 ...
- 81
5
votes
3
answers
6k
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 ...
- 509
5
votes
2
answers
3k
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 ...
- 153
5
votes
2
answers
419
views
3 Speed Front Derailleur can't reach small gear
I bought a new frame and put my old Campagnolo Racing T components on it.
The seat tube has a diameter of 35mm and I use the Campagnolo 35mm clamp for the Racing T derailleur.
The problem is the ...
- 707
5
votes
1
answer
186
views
Problem with shifting up from small-small
I have a problem when trying to shift from the smallest sprocket on the rear casette to the bigger one when on the small chainring. It tries but it seems there isn't enough tension on the cable. If I &...
- 51
4
votes
5
answers
28k
views
Shimano 105 rear shifting issues
I'm disappointed with my new Cannondale and it's 105 group, I expected this to be a major upgrade from my previous trouble free bike with the bottom end group set. It's done about 500 miles, had new ...
- 41
4
votes
3
answers
202
views
How to check and ensure parallelism of front derailer and chainrings?
Various instructions of front derailers with clamp want me to ensure that the derailer cage is parallel to the chainrings.
What is the preferred way to do this?
Since the derailer cage has quite a ...
- 733