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Lean Angles
However impressive a steep lean angle may seem to the not-so-fast rider, it is not a definitive indicator of speed and lap times. An experienced fast rider works to simultaneously reduce lean angle while increasing speed, easily done initially by shifting body weight towards the inside of the turn or "hanging off" as the young guys say. Serious fast riding requires a lot of body movement from one side of the bike to the other, done smoothly without disturbing the bikes path. Other factors can affect lean angle, including motorcycle weight, center of mass, riders weight, smooth consistency on the intended line and even wind. Consider the 5 track-riders on the left.
The top rider is Jason DiSalvo, a Yamaha factory Superbike rider and AMA expert. Here he is pictured in turn 1 at Parumph on his factory-supplied R1 practice bike. Jason, only 22 years old, has already won more AMA races than I care to list here. Obviously he is fast. His athletic posture is at least partly related to his young age, his 5 foot 3 inch height and 125 pound weight. The 2nd rider is Billy, mid-thirties and the fastest sport bike rider I know who isn't a professional racer. He is on a CBR929RR, pictured here in turn 1 at Parumph. In my opinion, Billy would be competitive with at least some AMA professionals The 3rd rider is Gene, early-forties and the 2nd fastest sport bike rider I know who isn't a professional. He is on a CBR1000RR, pictured here in turn 1 at Parumph. Gene is fast but I don't believe he is as fast as Billy. The 4th rider is Jeff, mid-fifties and pictured here on his R1200GS at Streets of Willow. This Reg Pridmore CLASS was Jeff's first track experience and he already looks relaxed and fast. The 5th rider is the author of this brief narrative, mid-sixties when the picture was taken, and not-so-fast. The bike is a DL650 V-Strom, pictured here in a Jason Pridmore STAR track school. Instructors and an unknown AMA rider passed this rider as though he were parked. At a glance, the lean angles in these pictures seem similar but in fact the abilities and track experience vary from AMA top ten to first track outing. While most people would easily pick the top photograph on the left as picturing the fastest rider, ranking the other four by lean-angle alone would not be so easy even though the lap-time spread would be rather broad. Verle Nelson, Cedaredge Colorado
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| Note: the trackday.net sample photos are used only for the purpose of demonstrating the editorial point of this narrative. | |