Lower gears out of sinc..

[rocky34]

When changing down the gears from 3rd to 2nd the chain jumps to 1st..
I have followed the adjustment guides.
It was happening on the old cassette and this new one. (8 speed)
Could it be the chain
Its also a new Alivio derailluir and new cable.

Thanks..

[nfmisso]

yes; always replace the chain when you get a new cassette.

[DaveM]

Check the derailleur hanger alignment, if it is a little bent it can cause this.

[rocky34]

(05-23-2011, 07:14 PM)DaveM Wrote:  Check the derailleur hanger alignment, if it is a little bent it can cause this.

Forgot to mention the hanger is also new..
How much is a new chain.. any type/make to look out for.
Do you buy the chain at a set length.. for 8 speed cassette..

Thanks...

[nfmisso]

you can get an "8 speed" chain at Wal-mart; it is branded Bell, but is a KMC chain. You'll need a chain tool too take out a few links to work for your bike, which Wal-mart has.

Or:
http://www.amazon.com/IceToolz-Chain-Tool-Speed-Shimano/dp/B0028N8S2O/
http://www.amazon.com/Shimano-CN-HG50-8-Speed-Chain-Black/dp/B0013EP4W6/

Take a look at these:
http://bikeride.com/calculate-chain-length/
http://bikeride.com/chain-tool/

[AndrewB]

(05-23-2011, 07:31 PM)rocky34 Wrote:  

(05-23-2011, 07:14 PM)DaveM Wrote:  Check the derailleur hanger alignment, if it is a little bent it can cause this.

Forgot to mention the hanger is also new..
How much is a new chain.. any type/make to look out for.
Do you buy the chain at a set length.. for 8 speed cassette..

Thanks...

A new hangar may not be an aligned hangar though.