[python] Re: micro python
- From: Olaf Johansson <home@xxxxxxxxxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Sun, 4 Feb 2007 15:24:19 +0100
On 2 feb 2007, at 19.40, Jürgen Maier wrote:
-----Ursprüngliche Nachricht-----
Von: python@xxxxxxxxxxxxx
Gesendet: 25.01.07 19:12:32
An: python@xxxxxxxxxxxxx
Betreff: [python] Re: micro python
Hallo, Olaf,
One reason my monty wasn't a big sucess as a bring-along-bike, was
that it was separable instead of foldable. So I gave in and bought
myself a Brompton which I frequently use on buses and trains. It
folds easily and quickly, and most important, the parts are still
attached to eachother when folded. The B can be carried as a
suitcase.
This I did not think about. I have a foldable upright and you are
right,
it is praktible to have all parts together. On the mail to henry i
attached
a drawing for a foldable micro-python.
I like it, Jürgen. Simple folding and with possibilities to carry a
bag low and close to the cog. The pivot arrangement gives me some
Flevo vibes. Having the pivot this far up makes it possible to
experiment with very short negative trail.
With a length adjustment facility (perhaps of bottom bracket boom
type) on the main frame tube, the package could perhaps become even
smaller. But also take longer to fold of course.
On the Micro you will be seated further back than many python riders
on their bikes. This probably means that your hip joints will not be
fully engaged in the steering process.
this does not matter, on my TT testing prototype i am sitting
behind the pivot.
If centre of movement (the pivot) is placed way in front of the hip
joints where the swivelling takes place I could imagine a lesser
degree of contact with the bike. After all the TT does feel quite
different from steering a python ... don't you think?
the a - b distance is important, a must be same or bigger than b.
For what reason is this important?
On my monty b (47 cm) is considerably longer than a (27 cm)
olaf
greetings Jürgen Maier
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