[python] Re: Lean Steer Python/Hipparion Trike

  • From: dirk.bonne@xxxxxxx
  • To: python@xxxxxxxxxxxxx
  • Date: Thu, 04 Jan 2007 21:24:17 +0100

Henry Thomas wrote:
> It is my theory that the reason why we hear reports of non tilting
> python trikes experiencing shimmy at higher speeds is a function of
> the static forces on the bike caused by road camber. I imagine that on
> a perfectly flat road there wouldn't be a problem, but on a normal
> road shoulder the trike is on a slight lean, so the weight of the
> rider is always forcing the steering to turn up towards the road
> center. At higher speeds this would be the likely cause of these
> oscillations. My expectation is that my trike design will eliminate
> this shimmy, because the rider and steering forces will remain
> vertical and thus neutral to the road.
Yes, you are right. The oscilation should be vertical and should not
affect the steering. Very nice!



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