Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the July Giveaway for a brand new 26" Thruster® Street Style BMX Cruiser Bicycle

New product launch: WIN an innovative aeroe Spider Rear Rack


Sora rear derailleur shifting irregularities
#1
Hi,
I just finished adjusting my Sora rear derailleur using the procedure on the Park Tool website and as usual I've made my shifting worse. I find that the amount of pressure I have to apply to the STI shifters varies depending on the gear I want to get into. The most extreme gears require more effort. I also find that when I want to change direction in my shifting (eg. downshift a few times then try to upshift ) I have to click 2 or 3 times on the shift lever then maybe apply a little pressure to make it run smoothly. The next few upshifts usually only take one click.
Any suggestions?<br />
Thanks!

  Reply
#2
I would start with the cable. Remove it, pull out the inner and clean it. Check for any broken or kinked strands. Check the outer for sharp bends etc. If in doubt fit a new one.
Refit the inner cable, but before connecting it to the derailleur, operate the STI and pull on the cable with your hand. You should be able to feel if the STI is operating correctly. (In fact you could do this before removing and cleaning the inner cable).
Check the derailleur by moving it with your hand and clean it as best you can. I usually squirt mine with WD40 to clean the pivot points. Remove and clean the jockey wheels - one at a time! Don't mix them up as they are different between top and bottom. Make sure that you tighten the jockey wheel screws properly when refitting.
Now reconnect the cable and set up the derailleur. (Also check for a worn chain as this can effect changing gear smoothly.)

Ride hard or ride home alone!
  Reply
#3
Thanks for the help cyclerUK much appreciated. I think the thing that baffles me the most is what I could have done in the adjustment process that would cause such a change in the shifting? I made it way worse! It seems some of us are better served riding ss/fixie. If only my knees could handle it!
Cheers!

  Reply
#4
Just a small input, ghostsafe trust me I have had my own learning experiences with something that seemed so simple turn out to be a nightmare. Don't lose confidence in yourself. Just a learning process. Smile

Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#5
Thanks for the encouragement Bill.
It's frustrating that servicing seems so easy in a book or on a website. I think I'll try to take a night course in bike mechanics if I can find one. I'm trying to make my bike commute as easy and inexpensive as possible. Running to my lbs every time something goes wrong is<br />
not an option.

  Reply
#6
No wonder I couldn't tune it properly!
It turns out that both my derailleur hanger was bent and my derailleur is worn and will need to be replaced soon. My LBS did the best they could to get it to shift properly but it still not great. I am going to squeeze a couple more months out of it and maybe upgrade to a Tiagra or 105 when I have to replace it.

  Reply
#7
Glad to hear that you found out the cause. Bent parts sometimes gets expensive to replace, but that's how it goes. Are you going to replace the derailleur yourself? They are tedious little fellows but really not all that complicated. By the way you are welcome for the encouragement.
Bill

Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#8
Here's a new video for aligning bent derailleur hangers: http://bikeride.com/derailleur-hanger-alignment/
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
5,349
06-28-2017, 12:52 AM
Last Post: jacke
 
5,079
04-01-2016, 07:13 PM
Last Post: jtj
 
12,956
05-14-2015, 05:55 PM
Last Post: DaveM

Forum Jump:

[-]
10 Latest Posts
26" Thruster® Street Style BMX | July 20...
Yesterday 10:21 PM
Dork disc - remove it or keep it?
Yesterday 09:10 PM
Specialized Allez Upgrade
Yesterday 07:59 PM
Taylor Phinney retires
Yesterday 06:33 PM
Front derailleur spring
Yesterday 01:24 PM
TOMMASINI (EXPORT?) 80's
Yesterday 01:08 PM
Post a photo for aeroe Spider Rear Rack
Yesterday 03:20 AM
Biking inUtah
07-11-2020 11:40 PM
BAGGI 1936(?)
07-11-2020 08:14 PM
QUINTANA ROO "KILO" 1999
07-11-2020 01:48 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
80 posts
no avatar 2. CharleyFarley
24 posts
no avatar 3. Painkiller
11 posts
no avatar 4. Papa Dom
10 posts
no avatar 5. Nikko
8 posts