Join Date: Jun 2010
Location: NW,Oregon Coast
Or you can get a road double , and use a metal chainguard on the outside where that ring would sit ..
Surly makes Stainless steel chainrings to 50t, Schlumpf and Bike Friday sell bigger disc chainguards .
I have a Schlumpf MD crank (54t), and a Bike Friday (53t), both use the common 130 5 bolt pattern.
compatibility is about the right side chainline .. not changing , at its most basic criteria
Square taper BB should be in common Between the 2 Brompton sold parts you mentioned.
Last edited by fietsbob; 11-15-13 at 11:59 AM.