Originally Posted by
SurferRosa
The RD will have a tougher time with those rings than the 28t cog.
Unless you go to a Soma long cage, keep the chainring difference to 10t, and you should be fine.
I'm with you on this as well. I'm a little skeptical of how far you can push campy NR derailleurs but the paper specs look promising.
It looks like the campy front derailleur can handle a 12 or even a 14 tooth jump.
Campy Nuovo Record Front Derailleur Capacity
The rear derailleur in theory can handle 26 teeth of chain wrap and a max cog of 26
Campy Nuovo Record Front Derailleur Capacity
But there are a lot of variable on this and folks here have run 28 or even larger freewheels with a campy NR RD. Still the moto came with a 12 tooth jump up front (52/40) and a 14-26 freewheel which means it can handle at least 24 teeth of wrap.