Need help with Campy drivetrain

[Noctiluxx]

My friend bought a used Pinarello F8 with Campy SR drivetrain. As you can see from the pic the chain is too short. I assume the original owner upgraded to an easier cassette and didn't bother replacing the rear derailleur to a longer cage. What is the best option? Buy a longer cage rear derailleur, add links to a the chain (or new) or compact crankset?

[Alexandrumarian]

More links, a longer cage will not make it look any better.

[welchy]

Simples, longer chain bud. It looks like it would’ve been too short before anyway.

[Miller]

Yes, more links or just install new chain of the correct length is the solution. You'd only install a compact if you want a compact.

[Calnago]

Is that a 29 or a 32 tooth cassette? If it’s a 29 then simply putting on a correct length chain is needed. With the correct length chain that setup will be good for any cassette from 11/23 to 11/29, with just a simple adjustment of the H screw to optimize it for the particular cassette being used, providing the chainrings stay the same. If it’s a 32 tooth cassette, then that derailleur is not designed for it, regardless of chain length.