Chain rubs to front derailleur cage...

[kaustubh]

Hi,
I am a newbie.
I bought a bike for regular use 5 months ago.
My front derailleur cage gets rubbed against the chain when I shift front gear on the middle ring. Chain runs quite good with 1st and 3rd Gear, but for middle ring it gets rubbed.
When I increase cable tension it gets rubbed, when I decrease it, the chain has problems while shifting from 1st to 2nd gear. I tried playing with almost everything... What could be the problem?

[AndrewB]

Find the maker of the front derailleur, and search the web to find the manual or instruction sheet for it.

And/or watch Alex's video at http://bicycletutor.com/adjust-front-derailer/

You probably just need to align and adjust the derailleur. You may need some Tri-Flow or similar on the adjustment screws too.

[kaustubh]

(03-13-2011, 09:13 PM)AndrewB Wrote:  Find the maker of the front derailleur, and search the web to find the manual or instruction sheet for it.

And/or watch Alex's video at http://bicycletutor.com/adjust-front-derailer/

You probably just need to align and adjust the derailleur. You may need some Tri-Flow or similar on the adjustment screws too.

or maybe its due to misconfiguration alignment of rear wheel or rear derailleur?