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2.6 Isolating factors affecting steering:

In order to isolate the effect of the Torso-Arms-Handlebar mechanism and determine its importance,
a special '2-Skate' vehicle was developed:

A) The front fork angle is zero. So the first factor above, Front fork and suspension geometry, is eliminated.

B) Skates replace the two wheels. So the second and third factors, Gyroscopic reactions and Power to the rear wheel, are thus also eliminated.

Thus, the only factor left is the Torso-Arms-Handlebar mechanism.

But does it work?

Well at least, the mechanism orients the front skate in the opposite direction from the rider’s torso leaning, exactly as for a bicycle or motorcycle:

But the vehicle really looks unstable,  more so since all the factors known to be essential for good steering were eliminated. So can anyone really ride it?

The answer is that it's as stable as a motorcycle or bicycle, as soon as it has been given momentum and a minimum speed is maintained.

But real skeptics will still think that there out to be something else holding up the vehicle. How could they be convinced?

There is an answer here again: Since the Torso-Arms-Handlebar mechanism is the only active factor, an additional proof of its importance would be to eliminate it and confirm that the vehicle will not be stable any more.

It's precisely what happens when the handlebar is let go. There is no gyroscopic reaction or front fork geometry that can act on the front skate, so it simply keeps on going in the same direction without correcting its orientation to support the vehicle:

Hard for skeptics...

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