[python] Re: Python frame with virtual front wheel pivot steering (instead of center pivot steering)
- From: Bernard Boden <docteur-boden@xxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Sat, 31 Jul 2004 14:18:38 +0400
Bernhard and Michael,
sounds great, the idea with the virtual pivot that can
emulate every steering geometry. But I have no idea
how this might be realized.
I understodd that there are two stationary bars in line with
the front and rear part of the frame and that they are attached
to them. Then both ends of these bars are linked with two
horizontally moveable bars.
But how does this make a steering pivot?
Maybe I need more explanations or a drawing to fully
understand this.
In the knee te fixed bars are the converse of the ones in Michael schemas
but the effect is the same
the pivoting movement is not a circle but ellipsoid
in the Michael's concept you should observe an
asymétrical behavior with a slight forward (or
backward) movement of the aft part of the bike
(or conversely) during pivoting right and the
converse pivoting left.
in the "knee" movement you have a backward
translation of the pivot with flexion (in real
knee)
applying the knee principle on a bike should
translate the axis toward the centre of rotation
and with the Michael principle , but rotating his
schema of 90° you could translate the pivot
toward the outside of the circle
--
Docteur Bernard Boden
Chirurgie Orthopédique Traumatologie
Médecin DIM
Clinique Saint Vincent
8, rue de Paris
97400 Saint Denis de La Réunion
Médecin DIM
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