[python] Re: another newcomer
- From: Thomas P Jahn <tpj@xxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Fri, 19 Jan 2007 14:11:10 +0100
Very low BB height might cause your pedals hit the
ground when cornering. Also it is less efficient
if you prefer the sportive riding.
Very high BB seems to increase wheel flop and pedal
induced steering. Als it might be annoying having
the feet in the view.
Take 20 cm and it will be fine.
I learned yesterday that one main constrain for
the BB/seat difference is the aerodynamics. Your
body should hide as good as possible behind the
"action radius" of your feet. Not to
unnecessarily increase resistance. So: your lower
heal should be at seat height, while the your
upper tows should cover your shoulders. Then the
seat angle has to be taken into account as well.
Sounded logical to me. But I am not sure how
important aerodynamics are, really for the python
speed. But I guess it may be relevant.
Be the test subject for us and tell us what you
found out. So far no one dared to make front
suspension. Any pictures of your construction plans?
I probably explained it poorly. I made a quick
picture of the middle and rear part. The seat
would be similar to your seat Jürgen. ....at
least on the picture. The bottom and main weight
is on the pivot. The idea is to connect two
pivots (green rods on the picture) in 90 degree
angle and then tilted to about 60 degree.
The position of the shock absorber (or just a rod
instead) would then change the pivot angle.
Thanks for your comments
Grüße
Thomas
Very low BB height might cause your pedals hit the ground when cornering. Also it is less efficient if you prefer the sportive riding. Very high BB seems to increase wheel flop and pedal induced steering. Als it might be annoying having the feet in the view. Take 20 cm and it will be fine.
Be the test subject for us and tell us what you found out. So far no one dared to make front suspension. Any pictures of your construction plans?
Attachment:
python_rear_idea.jpg
Description: JPEG image
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