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3 votes
0 answers
70 views

How to properly adjust front derailleur height when it can sway significantly once the clamp bolt is loosened up?

I'm trying to adjust derailleurs myself, for the first time .) the model is DEORE XT following the how-to https://www.wikihow.com/Adjust-a-Shimano-Front-Derailleur the very first step - adjusting its ...
darkdiatel's user avatar
6 votes
1 answer
1k views

Can't shift into lowest gear on a new road bike (pics)

I've followed the Park Tools Rear Derailleur adjustment video exactly, step by step, because my bike was jumping gears after I reinstalled the rear wheel after changing the tube. The bike however won'...
Norse's user avatar
  • 163
4 votes
1 answer
990 views

Trek Marlin 7 (2022), Gear Shifting

I have a issue with my Marlin 7 (2022). It has a Shimano Deore M5120 rear derailleur. When the bike is on the bike stand the bike shifts perfectly. When I'm riding the bike the bike shifts fine until ...
Samuel Taylor's user avatar
12 votes
3 answers
4k views

Why do I constantly have to re-index gears?

I've got a road bike with a high end 11 speed groupset that is about 3 years / 30,000 km old. Chain and cassette have both been replaced recently (i.e. 500 km ago). What I'm experiencing is a constant ...
maupertius's user avatar
-3 votes
1 answer
254 views

How to adjust rear derailleur indexing in a mix-and-match drivetrain in the easiest manner?

I have a touring bike where the drivetrain has been built not according to Shimano's instructions. For example, the shift lever is SL-BS64-8 Ultegra 8-speed bar end shifter that according to Shimano's ...
juhist's user avatar
  • 20.1k
3 votes
1 answer
958 views

Adjust deraillers after changing chain?

I just changed the chain on my Cube Acid 2X11sp mtb. I replaced the old chain with an exactly similar brand, model and length new chain (shimano). Is it NECESSARY to readjust and finetune the speed ...
Alex Par's user avatar
  • 579
5 votes
2 answers
7k views

What does this barrel adjuster do on the rear derailleur (SRAM Apex 1)?

On this SRAM Apex 1 derailleur, what does this barrel adjuster do? What happens if I turn it clockwise/anti-clockwise?
Johnny's user avatar
  • 247
1 vote
3 answers
1k 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 ...
Cyclist_DK's user avatar
0 votes
2 answers
109 views

Chain not sliding into casette perfectly

I have a RD 7900 derailleur and a standard 105 28t casette. After replacing my wheelset I observed after I put my bike on the workstand that the chain is not sliding in perfectly into the casette ...
zython's user avatar
  • 381
5 votes
4 answers
14k views

Why does my rear derailleur's indexing work for either the high or the low gears, but not both?

I am adjusting my rear derailleur indexing. It seems impossible to find the correct tightness. When I tighten the tension with the tension barrel adjuster, I have one of two problems: either it is too ...
user2670468's user avatar
1 vote
1 answer
500 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 ...
Phil's user avatar
  • 113
5 votes
2 answers
4k views

How to adjust cable length on integrated brake/shift levers, when there is no barrel adjuster?

I feel bad asking this question because I've been doing bicycle maintenance for over 20 years and this seems like a noob question. I was unable to find a Shimano manual to answer this question. I ...
Nik's user avatar
  • 1,471
0 votes
1 answer
147 views

Front Derailleur Tuning Question

I've installed new front derailleur (Shimano Tiagra) on my bike and I spent embarrassingly lots of time trying to adjust it. Yet still I think I have a problem with it. For me it seems too tense. You ...
LoomyBear's user avatar
  • 531
1 vote
1 answer
2k 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 ...
gcb's user avatar
  • 1,465
3 votes
3 answers
4k 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 ...
John Zwinck's user avatar
  • 2,348

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