Jose Da Silva wrote:
> There is a better version of the segway for problems like that. I recall
> seeing a 2 wheeled version with the wheels in-line

But then how does it stay up?  The Segway moves itself back and forth to
maintain ballance front/back, and the distance between the two wheels keeps
it ballanced sideways.  If the wheels were in line, then it would be
naturally stable front/back, but there is now no mechanism left to ballance
sideways.  This could be achieved the way a bicycle does where gyroscopic
forces from falling over feed back into the steering, but that only works
when you're moving.

> The picture I saw
> was in some 1977 encyclopedia or something like that, and it was large
> enough to hold a patient flat on top of it in case of accident on the
> trails, so the segway is not new.

Are you sure this did any kind of ballancing at all?  Could this just have
been something with wheels to make litter carries a little easier?


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