^ Thats pretty much what I was saying Magz, except without all the spelling errors and boring explanation. hummingbird reasoned that a bigger rear disc should slow him down faster, but that set up would, possibly, increase his stopping distance (everything else being the same) due to the fact that the weight is being distributed to the front and the rear has far less traction. He would lock up the rear every time he touched it (assuming he was using the rear brake) causing loss of control and increase the stopping distance while regaining control.