Russell McMahon wrote:

> How well it stops depends on how good the control really is.
> To the uninitiated it would certainly be scary.
> Once you get it REALLY leaning backwards you could conceivably decelerate at
> a healthy fraction of one g !

Whoa! I doubt it. I decelerate at 1G regularly
on my racing motorbike and it's not a force
to be taken lightly. :o) NO WAY that 2 wheeled
Ginger thing is going to decelerate as quickly
as a normal car, or even a good bicycle, never
mind a racing vehicle at 1G!

Max acceleration and deceleration must be a force
determined by the power of the gyroscope, and
1G with that rough vehicle and rider weight would
be close to 70kW. And WHAT happens if you exceed
the ability of the flywheel??

I'm really curious about the REAL performance of
this "vehicle". How good is energy efficiency per
mile compared to say a Californian electric bicycle??
What is the steepest grade? Max accel/decel?
What's the max gyroscope power? How does constant
use affect the flywheel bearings? Any accel/decel
will cause nasty precession forces on the flywheel
bearings, what life will they give?

And why does it need active feedback? My toy
gyroscope stands perfectly on a pinpoint (or one or
two wheels if you like).
-Roman

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