Originally Posted by
feynman
Hi Winfried, have you finally chose tern P20? I am now considering it, so would like to hear your comment before I go ahead with it.
It's more rigid than a Brompton and it brakes better.
However, it doesn't fold as small, and the gear inches/meters development is smaller. But then, the only way to increase development seriously is to combine an IGH with a derailleur.
If you just need a bit more gear inches at the top, check if you can replace the big chainring with a bigger one.