Hi Alexw35...

I recently completed my R20 project.
It has the Nexus 8 rear hub.
I have been contemplating adding a 2nd ring to the front, but not sure if a deraileur would work up front.
However, I see that you have 2 rings on the front of your R20.
What type of front deraileur are you considering using with your 2 ring front setup?
My thoughts were that a front deraileur may not work, thinking that there may not be enough real estate on the seat tube to mount it, considering the location of where the down tube meets the seat tube.
Maybe I need to take a closer look at that.