[python] Re: Trapezium steering?
- From: George Durbridge <gdurbrid@xxxxxxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Thu, 07 Jun 2007 10:04:37 +1000
You don't need a calculator to do this sort of simulation. You can use
a few wooden rulers, some pushpins and a corkboard. The virtual pivot
will move as the trapezium distorts, however.
On Wed, 2007-06-06 at 11:21 +0200, Jaculus wrote:
> Hi
>
> I have spent all sunday near the Optima site at the exhibition at
> CycleVision and suddenly realised a way to reduce the trail of a
> Python.
>
> The idea is verry similar to the way the suspension of the (no longer
> in production) Optima Cobra. A trapezium has virtual turning axles,
> witch in some configurations can be outside the trapezium.
>
> A slight problem is that trapezia have two virtual axles. I started
> doing math in oocalculator and found a workable trapezium where both
> virtual axles coincide.
>
> The trapezium i found has the following configuration: rear 21, sides
> 18, front 10, this trapezium gives a virtual pivot 11,4 outside of the
> trapezium.
>
> If I would aply this idea to th Jaculus i would reduce trail from
> about 20, to aprox. 9.
>
> I hope to give people ideas, since the comming months i won't be able
> to construct another python.
>
> I do have the spreadsheet for trapezium calculation, but since
> mailinglists don't like attachments, i do not atatch it to this mail.
>
> Milan
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--
George Durbridge
+61 3 9481 3500
+61 409 413 945
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