Issue 19 - Spring 1987

  • The 20-knot Human-Powered Water Craft
    Alec Brooks
    1
  • Conception and Optimization of Human Powered Aircraft
    Ernst Schoberl
    4
  • Dynamical Stability of the Bicycle
    15
  • Discussion of Le Hénaff's Paper
    Jim Papadopoulos & Andy Ruina
    18
  • Construction of the Flunder Bike Trailer (translated by Otto Brodtrick)
    Falk Riess & Rainer Pivit
    20
    Letters
  • In The Air
    Edwin G. Sward
    3
  • Comments on "Rickshaws"
    Jan Vandertuin
    3
  • HP Helicoptered
    Toshio Kataoka
    3
  • Studded Tires
    James Donohue
    3
    Editorial
  • Unrestrained brachistochrones
    David G Wilson
    2
  • A history of the IHPVA speed championships
    David G Wilson
    2
  • The Farnsworth formula
    David G Wilson
    2

Issue 19 may be downloaded by clicking on the icon.Download Scanned PDF file