[python] Re: trail vs wheelsize

Yes sir, Jurgen is exactly right.  I built a python that could adjust the
wheelbase and pivot angle, and indirectly the seat height.  I posted a
rather lengthy analysis after the 5 of us were done adjusting and testing.
http://www.freelists.org/archives/python/10-2005/msg00017.html

The link to the python is here and I still need to take some photos of the
finished python.
http://www.fleettrikes.com/python%202.htm

| > That is my question: what is the best python setup? I was trying to
| > do some calculations, much like those on the website. I realised i
| > need vector math to figure out the up and down travel when
| > steering... I was thinking to produce an javaapplet, that one can
| > start in a webbrowser. You enter your measurements, and get i.e. your
| > up and down travel. I think wheelbase, trail, wheelsize, "the angle"
| > and the distances between the steering pivot and the axles all have
| > the influences...
|
| Hello Dirk,
|
| this program was already made by Dirk Bonné and you can find it here:
|
| http://dirkb.dnsalias.net/pythonselfcenterprogram.html
|
|
| A remark to your prototype:
| If you build a python with pivot angle of 60 degrees you very
| likely run into the wheel-flop problem, especially if the front
| wheel is big.
| With an angle of 67 degrees you should be on the safe side.
|
| > Would it be possible to build a flexible python, where one could
| > adjust all things that possibly have any influence in the driving
| > experience? I would then go on and modify them one by one to the
| > extremes.
|
| This has been done by Tim (25hz) last year. There have been discussions
| in this list and I think there is a report on this site:
|
| http://www.fleettrikes.com/python%20clone.htm
|
| Regards,
| Jürgen.

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