Ran into a bump after I was loading the “sprocket upgraded” to the Brompton last night. The larger 18T sprocket was actually in contact with the rear triangle that stops the wheel from rotating.
Once I got the triangle “touched up” for the larger sprocket, I went out to a perfect place to try out the new gearing setup.
Known as the titanium guy at Bike48. Always trying to tell people titanium is 45% lighter than steel. Proactively modding up his Brompton with the leftover parts!