[python] Re: let us compare
- From: Jürgen Mages <jmages@xxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Thu, 01 Nov 2007 20:20:36 +0100
Moin Lutz,
Jürgen always recommends a steering angel around 67°. If I remember
right the reason was, that a lower angel causes wheelflop and a
steeper angel makes the bike unridable, because the selfcentering
effect disappaers.
Nowadays I recommend 65 degrees.
In the projecct survey page are a lot of pythons with lower angels
down to 60°. Is this possible, because the riders are so heavy or the
front part is so light, that no wheelflop happens? Is the conclusion
for me (1,74m tall, 70kg) to aim at a shallow steering angel for
great selfcentering effect but a light front fame to avoid wheelflop?
Is it right, that a bike with small wheels in general allows a lower
steering angel because the COG of the front frame is not so high over
the pivot point like on a bike with large wheels?
Very likely: 20" pythons seem to have less WF problems caused by small
pivot angles than 26" ones.
In the weekend I cut out the complete front part of the front frame,
changed it for the new crank, welded everything together again. Then
had the first longer trip along the dyk about 15 km. I felt it
easier to go a little bit uphill or against the wind than downhill or
downwinds. In general get scared in higher speeds. Does this mean:
no PSI problems, but not enough selfcentering effect? Or is it too
early to make any conclusions? Your advices are welcome.
I wouldn't expect PSI or any other problems, regarding your fotos. Just
keep on practicing. If, after 300 km you still have not made friends
with your bike, we should take a closer look at the frame specs.
Schöne Grüße,
Jürgen.
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