Instructables
Picture of How to tune your rear derailleur
You like cycling but you hate going to bike shops for every little thing that isnt right on your bike?

One of many things that i hate is bad shifting gears, i hate when it cant shift in one gear, ghost shifting, slow shifting, squeaking,etc.
All of this problems are caused because of bad tuned rear derailleur.
Here, in Serbia, bike shops usualy charge you 500 rsd ( about 5,6  $ ), but problem isnt money ( well, 10 $ is average daily wage in Serbia , so you could say its overprized, but...) problem is that even you want to give them money, they arent fixing that problem for eternity, its only fixed for 1000km . ( belive me, i bought new bike 3 months ago, they did zero service , and next month ( in june) they did first service , tuning brakes, gears,..., when they finished that service i bought speedometer( measuring speed, distance, ...)   and since then i  rode about 700km ( maybe 900 because my dad reset it 2 times) . After only 700 km cables are again losen, and my gears not working properly....................................

so we are runing into other problem, after only one month i need to go again to bike shop and they will charge me 5 $ ( first two service  (zero and first one) are free)  ( 5$ for me, but in usa,uk,australia, many other states bike shops are charging 20 $ maybe less maybe more)     , and they will fix it, but then after 1000 km they i will, need to go again, and then again, and again,again....
also expenses are raising with every other visit, because after  3 or 4 tune ups, they will say that you need new cable (thats also 5-20 $))

so do you know where i am going, after every bike shop visit, they will say that you need some new part (it will actualy need you) but you will know how to change it alone. ( you all know that chain shoud be changed every 3000 km, casette every 6000km??????)


so enough of this theorys.

tuning up your derailleur is realy simple and fast ( i was stuned when i finished iit in under 2 minutes)
 
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Hi,

I just wanted to suggest some changes and additional information be added to this tutorial in case someone tries to use this tutorial to tune adjust their rear derailleur cable tension and then discovers that shifting issues persist.

I've been an employed bicycle mechanic for four years and started learning about bicycle mechanics six years ago.

1. You want to set your "high gear" limit screw (that is the limit screw that limits derailleur movement near the outside of the frame) while the pinch bolt on the cable is not tightened down. If you were to adjust this limit screw when the bolt is tightened (as this Instructable suggests) it could change the tension on the cable, which you would have previously just set.
2. Besides cable tension and limit screw adjustments, poor shifting can result from a not properly lubed chain, a worn chain or cassette (or both), a broken shifter, a mismatched shifter, a broken derailleur, screwed up cable routing, gunked up cable or housing, or a bent derailleur hanger.
3. If you need more information on adjusting shifting, then you should check out the extensive articles on Park Tool's website and, of course, Sheldon Brown's online encyclopedia.

I appreciate tealk's upload and my intentions aren't to discourage readers from following it.
This comment could just save people some time or headaches if the above method doesn't work for them. Having worked in a bike shop, I can say that gunked up or rusted housing and bent derailleur hangers are primary contributors to crappy shifting.
tealk (author)  dlynch021321 year ago
be sure to vote for me :D
tealk (author)  dlynch021321 year ago
yes you are right. First , if you talking about B screw then you are right , but with turning cable barrel adjuster you can eliminate all problems. i wrote that you should play with limit screws, and barrel adjuster because its fine tuning, When i made this instructable i was satisfied with my shifting but after few rides i was thinking that it can be better. So i played with barrel adjuster , little bit with limit screws, b screw , and after few minutes i make it better. Now its 10 times better shifting ( now its shift like my friend alvio derailleur , which is 3 times better then tourney)
Second , yes absolutely, i wrote that it really helps if your chain is clean and lubed and your derailleur lubed. I have this instructable http://www.instructables.com/id/Bike-chain-degraeser/
which shows how to degrease chain (this is one of many methods used for chain cleaning, now i use brush and degreaser. i watched good video how tour de france bikes are cleaned) .Lubed chain helps shifting (i dont know in % , but from my experiance its 50% , lubed chain is quiet, "faster"etc. i usually clean my chain and freewheel after 200-300 km , i lube every moving part of derailleur, i put one drop of lube onto the pulley wheels.After almost every ride i take a cloth and wipe chain, derailleur,etc....
For third one i think that i wrote in this comment.

Well this method will work, i think its same method as every other. every bicycle mechanic i know work with this method because its universal, it works with cheap and expensive derailleurs.....

one more thing, rear derailleur ,even its look like hard job, its actualy very easy unlike front derailleur which can cause many problems ( i just adjusted mine and it make me headache but i manage to adjust it after 15 minutes ( well sometimes i panic, so i can get headache in under one minut but it goes away really quickly because i quickly learn how things working) ... tommorow i will post instructable how can you adjust front derailleur if your shifting is bad, chain is rubbing derailleur , etc.)


Thank for your comment

billbillt1 year ago
great
tealk (author)  billbillt1 year ago
thanks :D
tutdude981 year ago
i am from croatia and here is tuning about 50kn (10$) but i tuning it miself also make sure you wont let chain go over biggest cog becouse it can take cage into wheel (i broke shimano altus like that)
tealk (author)  tutdude981 year ago
yes, because of that you should use upper limit screw, it limits cage (which limits chain) to slipp and mess everything.e sto pricamo engleski obojica, ko pravi :DDDDDD
Pricaj Srpski da te ceo svet razume!
tealk (author)  tutdude981 year ago
DA :D
I wish you would have posted this 2 weeks ago when my nephew asked me to help fix his derailer. We got it fixed (through a LOT of trial and error) but this would have helped a lot. Great 'ible and I'm sure it will benifit a lot of people!
tealk (author)  DollaBillionare1 year ago
thank you for your comment and support.