Shimano 105 Gearing Issue

stuartknowler

Hi.
New to the Forum today but hoping someone might be able to shine a light on an issue that's got me beat.
May be new to the forum but not to bike maintenance, many years of experience.
However, just upgraded majority of the groupset on my road bike to Shimano 105 & some Ultegra and having a major issue with indexing in 9th & 10th though.
Everything else runs very sweetly BUT cannot get into 10th no matter how hard I try with adjustments. Never been stumped like this before. If I set 10th & 9th to index perfectly, 4th & 5th are jumpy & noisey, If I tighten the cable adjuster to work perfectly there I can't get it to drop down to 10th. After 3 evenings of trying I am finally calling for help.

Setup:
105 F5800 Freehub with 1.85mm spacer & 0.9 combined (As advised by Shimano) to run Ultegra 6700 10 spd 12-30 Cassette.
105 8500 Medium Cage Rear Mech & Ultegra CN-6701 HG Chain.
All run from 105 5700 10spd STI levers

ANY ideas/thoughts/help/solutions greatly appreciated. Someone, somewhere has an answer.
Cheers

trailflow

105 8500 Medium Cage Rear Mech

If this is a '5800' Rear mech. There's your problem. That's an 11 speed rear mech.

You need a 5700 rear mech to match your 10 speed shifters.

If thats a typo and you do indeed have a 5700 rear mech possible things to check are

The limit screws
The b screw adjustment - make sure the upper jockey wheel isnt too close or touching the cogs on the cassette at either range
The cable is clamped in the correct position on the RD
The cable has not been 'wind up' when it was clamped moving the RD inwards slightly
The shifter is clicked into the highest gear before clamping the cable
The hanger is tight on the frame
The RD is tight on the hanger
The lockring is tight
The cassette cogs are in the right order
There are not too many spacers on your freehub. Try removng the 0.9 spacer
The hanger is not bent
The wheel is seated properly
The cable isn't frayed or has any kinks in it.
If the frame has a bottom bracket cable guide. Make sure it is secure and not moving around

dj58

You would be better using the RD-6700-A SS 10sp rear derailleur with your CS-6700 12/30T as it is designed to work with that cassette range.

stuartknowler

Hi All, thanks for the info. I've come to the conclusion the 5800 rear mech is the problem. Didn't realise it was 11spd specific when buying. Will have to go for the 5701 and prey that sorts it. Getting to be an expensive mistake on my part. Can't afford the Ultegra. Doh!

davidof

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19680917#p19680917]stuartknowler[/url] wrote:

Hi All, thanks for the info. I've come to the conclusion the 5800 rear mech is the problem. Didn't realise it was 11spd specific when buying. Will have to go for the 5701 and prey that sorts it. Getting to be an expensive mistake on my part. Can't afford the Ultegra. Doh!

Check there are no cheats you can do with cabling to get the mech to work - like you see for 9 to 10sp etc.