Originally Posted by
mulleady
It is easy with any smaller wheeled bike to hit the ground if you turn sharply at high speed.
I'm not sure you're right here. I am thinking of this from a pure kinematics perspective; when cornering, the type of bike is irrelevant to the lean angle. Pedal strike is governed by cornering speed, BB height and pedal size, ie how far it sticks out and how thick it is. Tyre thickness also plays a small role.
What is the Brompton BB height anyway? Is there a geometry picture somewhere I could look at?