I am modernizing my DA(HON) and have a nexus 8 speed wheel mounted on the back.
With the new sprocket that is about 21tooth I have chain rub on my seat stay and I think that
going with a smaller front sprocket should fix it. Right now its about 53.
What are the modern Dahons running? Thanks
Depends on the model. Take a look at the specs on the Dahon site. The D7 (speed and vitesse) are 53T, some others are 46, all the way down to 38 IIRC. The 53 are proprietary one piece crankarm/chainring, while many of the other smaller ones probably could be easily unbolted and swapped out.