Deore changing problems

Crunchyknees

Hi all.

Some help would be much appreciated before the sledgehammer comes out.......

I have a 2011 Cube Acid with Deore shifters and a Deore XT rear changer. It has a 9 cog cassette.

I have had problems for some time shifting the rear cogs.

It will either go up, go down, but not both.........I just cannot get the cable tension right to do both.

I have.....

Installed new cables
Put a new rear hanger on
Bought a rear hanger checking tool and used it.
Adjusted the limiters
Oiled the cables
Oiled the cables again

And so on.,,,,,

I am no novice to adjusting gears but this +++++++ is driving me insane.

Any help would be much appreciated!

jimothy78

Crunchyknees wrote:

I have a 2011 Cube Acid with Deore shifters and a Deore XT rear changer. It has a 9 cog cassette.

Can you check the model numbers of the shifter and derailleur.

This shows the original spec of that bike to be 10-speed, so if you (or a previous owner) have stuck a 9-speed cassette on without changing the derailleur and shifter as well, then that would cause major problems with shifting.

Crunchyknees

Well spotted !!!

It's a 2010. Mine since new.

Getting old is no fun, believe me........

jimothy78

OK, so it's all 9-speed, as-per-spec, parts? Fair enough, then.

Have you deep-cleaned the derailleur and checked all the moving parts for play? - if it's overly loose either in the parallelogram pivots or the jockey wheel bushings, then the "slack" in those moving parts effectively absorbs some of the movement between up-shifting and down-shifting, meaning you can get clean shifts in one direction, but only at the expense of the other.

Crunchyknees

Yes, it is clean.

I would not say there is play.

cooldad

Did you replace the outer cables as well, or just the inners?

Crunchyknees

All the lot mate, clean as a whistle.

cooldad

Then either something is bent or you're doing it wrong.

If nothing is bent loosen everything off, read Parktools and start from scratch.

Crunchyknees

That's a good link, thanks.

Think I may have to lash out on a new one. I've had enough of it.

The Rookie

Stand behind the bike and eyeball the alignment of the rear mech to each gear.

It could be the pivots in the mech that are gummed up, with the wheel out lube them with some chain lube and work it in and out.