Originally Posted by lgregory
The America's/Speedy's braking power up front whether dual disc or not is about the same. Same amount of hydraulic force is applied.
At the risk of sounding pedantic,
The Speedie has a 1/2" bore master cylinder, I think the BA has 11mm, same as the Bonnies. That would mean more fluid displacement and hence more braking effort for the same amount of lever travel.
Of course, that only applies to the twin disc Speedies, I expect the newer single disc ones have the same m/cylinder as the BA