Originally Posted by
noglider
This cute line is written often, but it's not always true. The derailleur works well on some bikes.
But it messes with the Campiphilistines...
It works rather well with a 42/54 and a 13-21 7 speed block on my Cooper... the Cyclone I used when I ran a 13-28 shifted many times better (and worked with a wider range) but the NR is solid and the build quality is rather outstanding.