Cranking the bars makes the ride feel stiffer because of the interaction he described with the a-arms. Remember, the upper a-arm is shorter by about 4" or so than the bottom so it swings through its arc much faster. I can go and measure mine but just from my memory I'm pretty sure its around 10-15 degrees(about a 6% reduction in leverage) downward stock, cranked approaching 30 degrees. (15% reductoin in leverage) Over about 20 degrees there is a much more rapid change in actual leverage per degree rotated.

I think the main purpose is to dispel the myth that stiffer t-bars are necessary for lift, not that cranking the torsion bars doesn't effect ride characteristics.

Frank.