I saw this place the bike does not look stable??
Hard to consider the stability of a bike by the way it looks ;-)
Our friend Mr. Nobuo has build a Kalle but I don't know how it rides.
I do not know Nobuo?
http://d.hatena.ne.jp/telaviv/200602
Mr. Nobuo Moriguchi reports about the building of his bikes in his blog. If you scroll down to the bottom then you can see his Kalle clone.
============================================================
This is the Python Mailinglist
//www.freelists.org/list/python
Listmaster: Jürgen Mages jmages@xxxxxx
============================================================