Originally Posted by
Wilfred Laurier
You have made this claim before and I have told you before where your error lies. THe 'pitch over' point is the instant your rear wheel has zero force against the ground.
And I have explained to you your error in thinking that the "pitch over" point is when the rear wheel just leaves the ground. A "pitch over" can also be called an endo, a header (from the days of the ordinary), a face plant or a few other colorful things. They all describe crashes in which the rider leaves the bike by going over the handlebars. To do that your rear wheel has to be quite a bit further in the air then the instant your rear wheel has zero force on the ground. That's a skid if the rear brakes have locked the rear wheel and isn't nearly as disastrous as a faceplant.
Originally Posted by
Wilfred Laurier
This is both the theoretical and practical maximum. Theoretically, and practically, if your wheel is lifted off the ground any non-zero amount, your maximum deceleration without the rider and bike rotating over the front wheel is less than if it was not lifted off the ground. Your previous claim that maximum braking occurs when the rider is balanced in a nose wheelie is just nonsense.
Go find and read Bicycling Science by David Gordon Wilson.