[python] Re: BB-seat diff vs. PSI

On 05.04.2012 11:40, Dirk Bonné wrote:
On 05.04.2012 07:03, Vi Vuong wrote:
Anybody notices effect of BB-seat diff on PSI? or perhaps BB height alone?  BB-seat diff in the survey ranges from 1 to 32cm, plus crank.  It seems that kicking the pedal upward causes more PSI then pushing forward or downward.

Vi
Hi Vi,

It depends if you use click pedals or not. I use click pedals and notice no PSI effects differences between the pythoon (diff 17cm) and the stokid-python (diff 25cm). On the whole controlling is easier and safety is better using clicks.

Dirk
I forgot to mention, there is an article about the best seat-BB difference from the standpoint of aerodynamics:

    http://oud.ligfiets.net/redactie/meetligfietsengels.pdf

(lots of other interesting stuff in there).

For 30degrees seat angle I aim for 25cm difference. I find this very comfortable too.

Dirk
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