Effective lean angle equals arc tan [ riders mass/mass of bike and rider x shift distance/cg of bike and rider + tan of original lean angle ] :learn:
1 min 10 sec is a good effort... [URL="man Draggin his helmet going fast - YouTube[/URL]
Watching that video makes me want to go to track. Don't think I would try that though. I try to keep scratches off my helmet.
Is effective the range from vertical to running out of tire?...and low siding?
Then why don't you try it? You live close to some great tracks! Barber Motorsports Park in Birminham will be having a trackday 8-9 March. And again in April. Sign up for novice NOW at Home. One of our members is an instructor....
What is effective lean angle?
Effective lean angle is the angle created by drawing a straight line between the tire contact patch and the C.G. (center of gravity) of the bike.
One sentence is all it takes to describe "Effective" lean angle.
And HERE is where we have the thing I can't wrap my head around when we were talking about this: The CG must not be fixed - depending on the riders weight and body position (which contributes to the entire bike+rider CG)...If the rider stays on top of the bike, the CG in your pic is different than when he's hanging off...
Unless...you think of the bike and rider as the weight/mass in whole...if you think THAT way, then the CG for THAT bike and THAT rider remains the same, but I still dont' see how lean angle remains constant...