Gear adjusting

open topic, for anything cycling related.

Gear adjusting

Postby tuco » Fri Jan 19, 2007 8:52 am

I had to take my bike into the lbs to get the gears checked out. I was already to go and we had a brief shower of rain. Not enough to even register in the gauge but enough to wet the ground so I couldn't get there without ending up with a racing stripe up my back. I had to go straight to work from the lbs so I ended up not taking it in.

Maybe someone can help? The last couple of rides when I've been on the middle chain ring and in the middle of the cassette the gears have been jumping up and down (or at least I think trying to - not game to watch the cassette too long while riding)

The bike shop guy would have only adjusted something. I can't see to many things to adjust. Any ideas on how I can fix this myself?

If it helps it's a SORA 8 speed.
User avatar
Posts: 2016
Joined: Wed Oct 11, 2006 3:36 pm

by BNA » Fri Jan 19, 2007 9:11 am


Postby LuckyPierre » Fri Jan 19, 2007 9:11 am

Are these of any use?
I haven't read through them myself yet, but they might help.
You can get to the Service Instructions for each component in the Sora range by going to the Shimano website ( ), clicking on the 'Products' tab (top left corner) then selecting 'Road Bike', then 'Sora', then the component that you want (RD3300GS for the triple chainwheel rear derailleur).
User avatar
Posts: 1432
Joined: Fri Jul 14, 2006 4:37 pm
Location: Canberra, ACT

Postby tuco » Fri Jan 19, 2007 9:16 am

Thanks Peter, that's about all I've been able to find today as well.

I'll give it a go tonight.
User avatar
Posts: 2016
Joined: Wed Oct 11, 2006 3:36 pm

Postby sogood » Fri Jan 19, 2007 9:38 am

Sounds like gradual cable stretch.

Turn the gear cable adjuster screw counter-clockwise 1/4 turn and see what happens ie. Tighten.

If that doesn't work, then go through the instruction manual carefully. In any case, it's worthwhile knowing how to properly setup a derailleur from scratch.
Bianchi, Ridley, Montague, GT, Garmin and All things Apple :)
RK wrote:And that is Wikipedia - I can write my own definition.
User avatar
Posts: 17141
Joined: Thu Aug 31, 2006 7:31 am
Location: Sydney AU

Return to General discussion

Who is online

Users browsing this forum: Hergest, Red Rider

Popular Bike Shops
Wiggle Wiggle UK
Torpedo 7 Cycling Express
Ebay Ebay AU
Chain Reaction Cycles CRC UK

“Bicycles BNA Twitter
“Bicycles BNA Facebook
“Google+ BNA Google+
“Bicycles BNA Newsletter
“Bicycles BNA on Strava