[python] Re: wheel flop vs pedaling induced steering

Hi Dirk,


Had some time to study the PX.5 pictures. btw: should this one -
http://www.flickr.com/photos/python_uploads/2073763738/ - be named
PX.5 as well?
That is the PX.4 and it had a lower steering pivot angle than the PX.5. The PX.4 was not rideable due to excessive wheel flop. 


So you cleverly moved the seat forward, while having the drivers back
still leaning against the rear part of the bike. So it is in essence
a normal python with increased trail and b>>a-distance Do you think,
this is somewhat related to the position of the hip joint in front of
the pivot, as on of your pictures suggests? Or isit related to the
added weight of the front part, because it is longer?
The PX.5 was rideable but felt awquard. I blamed it on the PSI-effect because it felt like PSI, but it could also have been wheel flop: I remember that pushing this bike was pretty difficult. 

Cheers,
Jürgen.
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