S
Stefan
Hi Leute,
als Nachtrag zur Lenkgeometriedebatte ist mir gerade noch folgenden Seite wieder in die Hände gefallen:
<a href="http://www.bsn.de/cycling/">http://www.bsn.de/cycling/</a>
Dort findet sich ein Artikel mit dem Titel: <a href="http://www.bsn.de/cycling/articles/dynamics.doc">"An experimental investigation of bicycle dynamics"</a> (Leider nur als geziptes Postscript oder *.doc)
Hier ein kurzes Zitat aus der Schlussfolgerung:
<i>
In conclusion, we have experimentally measured the dynamics of a bicycle under no-hands riding conditions and found reasonable agreement with a simplified set of equations of motion. The magnitude of the individual torques that cause the front wheel to turn in response to the frame leaning have been calculated. At higher riding speeds, the gyroscopic torque dominates over the torque caused by the rider's weight. Although the gyroscopic torque strongly affects bicycle dynamics above about 10 m.p.h., we cannot say to what extent it actually helps balance the bike.
Several questions remain for further study. We have observed only no-hands riding to simplify the analysis of the motion, but the additional torque applied to the handlebars by the rider may be an important factor in the bicycle's motion. In principal, the externally applied torque could be extracted from the observed turning of the handlebars since the internal torques can be calculated. A torque sensor on the handlebars could also be used to directly measure the rider applied steering torques.
</i>
Auf der Seite finden sich noch sehr viel mehr interessante Sachen.
Gruss Stefan
als Nachtrag zur Lenkgeometriedebatte ist mir gerade noch folgenden Seite wieder in die Hände gefallen:
<a href="http://www.bsn.de/cycling/">http://www.bsn.de/cycling/</a>
Dort findet sich ein Artikel mit dem Titel: <a href="http://www.bsn.de/cycling/articles/dynamics.doc">"An experimental investigation of bicycle dynamics"</a> (Leider nur als geziptes Postscript oder *.doc)
Hier ein kurzes Zitat aus der Schlussfolgerung:
<i>
In conclusion, we have experimentally measured the dynamics of a bicycle under no-hands riding conditions and found reasonable agreement with a simplified set of equations of motion. The magnitude of the individual torques that cause the front wheel to turn in response to the frame leaning have been calculated. At higher riding speeds, the gyroscopic torque dominates over the torque caused by the rider's weight. Although the gyroscopic torque strongly affects bicycle dynamics above about 10 m.p.h., we cannot say to what extent it actually helps balance the bike.
Several questions remain for further study. We have observed only no-hands riding to simplify the analysis of the motion, but the additional torque applied to the handlebars by the rider may be an important factor in the bicycle's motion. In principal, the externally applied torque could be extracted from the observed turning of the handlebars since the internal torques can be calculated. A torque sensor on the handlebars could also be used to directly measure the rider applied steering torques.
</i>
Auf der Seite finden sich noch sehr viel mehr interessante Sachen.
Gruss Stefan
