[python] Pivot bike?

Hello:

I thought you all might be interested in my pivot geometry experiment
I've conducted with  my 'proof of concept' bike.

WARNING! The following photographs of this 'work in progress' bike
aren't pretty and are intended for a mature audience. Viewer discretion
strongly advised!

First - here is a FWD trike version with a pivot in front of the front
wheel. Where this differs from a python or traditional pivot bike is the
seat is part of the entire turning assembly. To produce a turn, the
rider simply leans over. The geometry is very similar to Bob Rohorns
S'Trike and in fact, he is assisting me with this experiment.

http://www.adventuresofgreg.com/HPVlog/03-04.html

Next we have a TWO WHEELED attempt with this geometry. When I attempted
to ride this, it initially felt very similar to a Flevo pivot style
bike, but I don't think it's ridable. I'd love to see someone try it who
has experience with the pivot geometry - perhaps it's only a matter of
practice.

http://www.adventuresofgreg.com/HPVlog/03-07.html

And thirdly, here is a 4 wheeled version. An attempt to gain some
stability to the two wheeled version by adding outriggers. I thought if
I could gain some speed, that I could balance on two wheels, but that
also didn't work.

http://www.adventuresofgreg.com/HPVlog/03-08.html

Greg


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