I’m very pleased with my Brompton (2-speed titanium) but I would like a couple of extra gears for riding up the odd steep hill and riding down even faster. I currently have 56 & 74 gear inches, but I don’t want to add too much extra weight and I don’t want a second gear lever cluttering up the handlebars.
I spoke to Ben Cooper (Kinetics) last Friday and it looks as though a Schlumpf High Speed Drive will give me exactly what I want... a low 30” the standard 56”/74” and a higher 90” top gear. Plus it only adds 300g to the weight of the bike, a lot less than any other Brompton gear option.
I called into the LBS where I bought the Brompton this afternoon and it turns out that one of the guys is an experienced frame builder so reckons he could fit a high speed drive for me. This would save me the worry of shipping my bike up to Ben. Just need to confirm with Ben if there are any snags I might have to consider.
Does anyone here use this system on a Brompton or other type of bike?