anonymous writes:

Take the wheel out, spin it in you hands and try to tilt it to the
left or right and note the force of the steering action. This
should convince you of its effect. You don't need to solve
differential equations.

OK, but envision a system without any rotating elements. Substitute
a runner or blade shaped essentially the same as the bottom of a
wheel and substitute sliding for rolling. Such a device would still
have a turning capability without the existence of any gyroscopic
effect.

You don't have to go to other devices to see that when the wheel is
not rotating the self steering does not work. For it to work on a non
rotating wheel, the bicycle must be leaned significantly for front
wheel trail to have any effect.

Don't! There is more to be gained by intelligent observation of
natural phenomena.

You mean it's OK to be able to "feel" something even if you can't
prove it exists mathematically?

You don't have to call it "feel". We are talking about physical
effects that either do or do not occur. Their presence is
demonstrable without delving into jargon and mathematical proofs.

Jobst Brandt