Originally Posted by williamr
As it doesn't seem to take any account of camber, surface condition, entry and exit restrictions or sight lines for the street, it's worse than useless and will probably kill somebody. It also seems to have no input for model of bike/weight of rider, as both mass and placement of mass have an effect on the relationship between lean angle and speed. This loooks like some half assed schoolboy app.
I hope you have a good lawyer.
Thank for your comment.
Any single track vehicle, motorcycle, bicycle etc will have the exact same lean angle per given radius and speed.
This concept is difficult for most to understand.
Lean angle is "the angle at which the force of gravity which is trying to pull you down is exactly offset by the centrifugal force being generated."
Represented by: lean angle = arctan(v^2/g*r)
v = velocity in m/s
g = 9.81 m/s^2
r = radius in meters
So, no. Mass of rider + bike, wheelbase, C.G. height has no effect on the relationship between radius, speed, and lean angle.
The easiest way I can explain this is the following:
When you travel in an airplane and the airplane turns, your cup of water is not spilling over. The water is perfectly level in the glass even though the plane is banking.
Now imagine a Cessna 172 flying at 140mph banking at 30 degrees
Now imagine a Boeing 747 flying at 140mph banking at 30 degrees
Will both fly the same radius arc? If you answered yes - you are right.
A Harley, a bicycle, and an Ninja zx6r are all going into a 200 foot radius turn at 50mph.
THEY WILL ALL LEAN 39.95 DEGREES to negotiate that turn. Period.
The data on my app is very accurate. For a given lean you have selected (your comfort level lean) it will show you at what speed each corner will yield for your given lean angle.
williamr - would you like to argue highschool physics with me? Have you discovered an amendment to the laws of circular motions formula that adds in parameters for mass?