Originally Posted by
Chombi1
Some sidepull single pivot brakes work better than others. having good caliper arm profile design results in stiffer calipers that are responsive and strong. The Spidel LS2s I have on my French C&V bikes have beefy caliper arms and they brake very well. But some sidepulls that look good at first glance have just mediocre to poor braking performance. The Modolo Speedy comes to mind as it's caliper arms are quite thin in profile, so they flex quite a bit when braking, so you get a mushy feeling at the levers.
I don’t disagree with you. But I had Dura Ace 7400s, and their arms were noticeably beefier than just about anything on the market. But they never felt much better than the 600 EX calipers that they replaced. Were they better than what was on my Centurion Sport DLX? Sure. But they never felt like what I expected a top of the line brake set to feel like. I never had that feeling until I got the 7700 dual pivots.