What they were saying on the other site is the brake lever displaces "two calibers" worth of fluid vs one caliber worth of fluid. That difference makes the brakes feel all most "on/off" vs a gradual feed of the brake. Maybe it is more important for sportbikes... I know my sportbike had a gradual feed which I really miss on my bike...Where did you find the Thunderbird Sport Hub...been looking for one for a long time.
