Bike steering influences
road surface tyre grip side
winds trail fork-offset rake angle rider’s weight lean angle
stiffness of the frame i.e. headstem to seat
post sight /font alignment.
Below is a reverse engineered bike with the above bike
fundamentals except the last one; which rarely if ever gets a mention. If held by the seat
the bike reacts the same as all
other bikes as regards to steering and yet you can’t ride it properly. This is because of its single lower frame
pivot point, at its front,
which is in place of a more conventual swivelling axis. Once seated any pedal pressure is applied the bike bends and
becomes unstable. This 2-part bike could be folded.
