Premium Only Content
Bicycle derailleur tuning academy
NOTES:
B-screw is set when the chain is on the smallest front chainring,
and on the largest rear sprocket!
Made a lapse with Rapid-rise explanation. Correction:
The cable needs to be loose to set the most inward (low limit screw) position,
not the most outward (high limit screw) position.
- Contents -
00:00 Introduction and the tools needed
02:04 How do derailleurs work
04:34 Front Derailleur (FD) tuning basics
06:34 FD tuning starting point
11:09 FD Low Limit screw
16:06 Barrel adjusters
18:24 FD High Limit screw
20:13 FD cable re-adjusting
24:25 Rear derailleur (RD) High Limit screw
27:39 RD cable attaching and tuning
29:19 Clutch RDs and rear suspension
30:38 RD Low Limit screw
32:00 B-screw
33:45 Barrel adjuster fine-tuning
35:34 RD cable re-adjusting
36:35 RD Low Limit screw fine-tuning
37:54 "Pre-stretching" the cables
38:46 Final fine tuning
39:18 Shimano "Rapid-rise" RDs
- Useful links -
Derailleur tuning problems - IF YOU GET STUCK:
https://www.youtube.com/watch?v=qU0rfivIhZE
How to find a good Phillips (cross-tip) screwdriver:
https://bike.bikegremlin.com/10583/phillips-vs-jis-vs-pozidriv/
Front derailleur mounting standards and compatibility:
https://bike.bikegremlin.com/260/front-derailleur/
Jagwire cable adjuster addapters (barrels) - Amazon affiliate link:
https://amzn.to/3btx8fK
Rear derailleur mounting, B-screw, chain wrap capacity, Rapid-rise, top-normal, etc:
https://bike.bikegremlin.com/230/rear-derailleur/
Indexed vs friction shifters, and shifter compatibility explained:
https://bike.bikegremlin.com/1339/bicycle-rear-shifter-compatibility/
Shifter and brake housing (and cables) explained:
https://bike.bikegremlin.com/8548/cable-housing-standards/
Routing shifter (and brake) housing:
https://bike.bikegremlin.com/8622/housing-routing/
Chainline explained:
https://bike.bikegremlin.com/1755/bicycle-chainline/
Chain wear (and measuring it) explained:
https://bike.bikegremlin.com/733/change-chain-bicycle/
Pros and cons of 1x systems:
https://bike.bikegremlin.com/6075/pros-and-cons-of-1x-groupsets-systems/
List of all the BikeGremlin videos, sorted by categories:
https://www.bikegremlin.com/youtube/
Camera & editing: Srdjoni from 2bike.rs forum
Thank you, doctor! :)
id: 1046
-
13:12
BikeGremlin
29 days agoPulling the rotor bearing from a Milwaukee HD18AG125 angle grinder
7 -
LIVE
LFA TV
22 hours agoLIVE & BREAKING NEWS! | MONDAY 12/22/25
1,192 watching -
1:19:31
The Quartering
3 hours agoAMFEST Civil War, Pam Bondi To Be Impeached, Bad News For The Economy & More
107K51 -
1:10:06
DeVory Darkins
5 hours agoDemocrats left SCRAMBLING after JD Vance GOES NUCLEAR with epic speech at TPUSA
116K56 -
1:45:47
Tucker Carlson
4 hours agoMatt Gaetz: Ted Cruz’s Delusional 2028 Bid, the ADL, and Identity Politics Taking Over the Right
72K190 -
LIVE
Dr Disrespect
6 hours ago🔴LIVE - DR DISRESPECT - ARC RAIDERS - THE GREAT RESET... BEGINS
1,466 watching -
1:01:09
Jeff Ahern
3 hours ago $0.82 earnedMonday Madness with Jeff Ahern
14.2K7 -
15:14
tactical_rifleman
5 hours ago $0.62 earned.50 CAL INCENDIARY DESTRUCTION | Tactical Rifleman
10.7K3 -
1:58:22
The Charlie Kirk Show
5 hours agoAmericaFest Aftermath: Tucker vs. Shapiro, Nicki Minaj, The Straw Poll| 12.22.2025
86.7K43 -
26:55
Barry Cunningham
3 hours agoRFKJR Is Doing His Best To Save Kids From Democrats And Crazy Parents!
11.2K8