Actually, they will create more down force as speed increases.
L = (1/2)
d v
2 s CL
L = Lift, which must equal the bikes weight in pounds
d = density of the air. This will change due to altitude. These values can be found in a I.C.A.O. Standard Atmosphere Table.
v = velocity of a MC expressed in feet per second
s = the wing area of a light mount in square inches
CL = Coefficient of lift , which is determined by the type of airfoil and angle of attack.
Your right, my mistake
I was calculating the altitude of Ia not Wi. Your so smart