[python] Re: Stability Theory
- From: Dirk Bonne <dirk_bonne@xxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Wed, 16 Feb 2005 17:31:26 +0100
Ray Schümacher wrote:
At 04:47 PM 2/16/2005 +0100, you wrote:
Hi Jürgen,
May be the stability problems of the P3 at speeds higher then 50km/h, is simply because you are lying more flat, and may be it has nothing to do with CGs, angles, trails or whatever. The bike could "just" have another oscilation frequency, so it begins to shimmer at a lower speed.
Hi Dirk,
I agree. Lowering the rear mass decreases the moment about the rear contact patch (like a shorted, inverted pendulum) and also shifts mass back, which my preliminary runs showed to always decrease the stable range. It might be the main advantage of the Traylors, having mass mostly over the front wheel.
Trail and angle really define the bike, I don't think BB-seat length would be much influence. It would only slightly decrease the distance from the front mass to the pivot axis.
Hi Ray,
Then we could just prolong the wheelbase!
Dirk
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