r*g*tan (deg)=v^2 Where r is the turn radius, g is gravitational constant, and degree is the slope angle of the trail or berm. V is your velocity.

In the diagram below, AB is the chord of a circle with centre O. OM is perpendicular to AB (meet at a right angle). Look at triangles OAM and OBM. The hypotenuses (OA and OB) are the same, as they ...