Human Power eJournal is an open source electronic periodical created by the Human Power Institute on behalf of the International Human Powered Vehicle Association IHPVA. Complete articles or excerpts may be published elsewhere under these terms.


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  Human Power eJournal Issue 13 2021  


31. Reciprocal frames in recumbent cycles
Stephen Nurse. -- HTML

30. Bicycling Science Fourth Edition - Synopsis
Theo Schmidt. -- HTML

29. Prospects for in-hub gearbox front wheel drive cycles
Stephen Nurse. -- HTML, PDF

  Human Power eJournal Issue 12 2020  


28. Adding Arm Power to a Tilting Velomobile
Wally Swarchuk. -- HTML, PDF (article)

  Human Power eJournal Issue 11 2019  


27. Maximum (Bicycle) Chain Efficiency
Theo Schmidt. -- HTML, PDF (article)

26. In-Hub Gearbox Front Wheel Drive Cycles
Stephen Nurse. -- HTML, PDF (article)

  Human Power eJournal Issue 10 2017-2018  


25. Determination of the optimal crank arm length to maximize peak power production in an upright cycling position
Danny Too and Christopher D. Williams -- HTML, PDF (article)

24. Chain induced stresses in bicycle and recumbent frames
Stephen Nurse. -- HTML, PDF (article)

  Human Power eJournal Issue 9 2016-2017  


23. Efficiency of human-powered sail pumping
Sergio E. Perez, Mark Wisniewski and Jordan Kendall. -- HTML, PDF (article)

22. Editorial and Human Powered Chain Ferries
Theo Schmidt. -- HTML, PDF (article)

  Human Power eJournal Issue 8 2014  


21c. ON SEVERAL EXPERIENCES, regarding the amount of energy which men can provide during their daily work, according to the different ways they use their strength,
Charles-Augustin de Coulomb. -- HTML 

21b. DE PLUSIEUR EXPÉRIENCES, destinées à déterminer la quantité d'action que les hommes peuvent fournir par leur travail journalier, suivant les différentes manières dont ils emploient leurs forces,
Charles-Augustin de Coulomb. -- HTML 

21. Coulomb's Work on Human Power,
Theo Schmidt. -- HTML

  Human Power eJournal Issue 7 2012-2013  


20. Leaning Trikes using Rear Axle Pedal Crank Mechanism,
Stephen Nurse. -- HTML (condensed article with further files), PDF (full article)

19. Closed-form Method to Evaluate Bike Braking Performance,
Junghsen Lieh. -- HTML (condensed article with further files), PDF (full article)

  Human Power eJournal Issue 6 2009  


18. Foundation building with human power: ground screws,
Theo Schmidt. -- HTML

  Human Power eJournal Issue 5 2008  


17. Ergonomics of Direct-Drive Recumbent Bicycles,
Jeremy M. Garnet. -- HTML (condensed article), PDF (full article)

16. Maximizing Performance in Human Powered Vehicles: A literature review and directions for future research,
Danny Too and Gerald E. Landwer. -- HTML (article)

15. Series Hybrid Drive-System:  Advantages for Velomobiles,
Andreas Fuchs. -- HTML (condensed article), PDF (full article)

  Human Power eJournal Issue 4 2007  


14. The Effect of Static Leg Position and Cadence on the Drag of a Cyclist,
Kim B. Blair, Guo-Liang Chew, and Mark Cote. -- HTML (article)

13. SDV drive with oval pedal motion,
Tetsu Iwatsuki and Noriyuki Oda. -- HTML (condensed article with further files), PDF (full article)

12. A Basic Data Logger for Recording a Bicycle's Wheel Rotation,
John Snyder. -- HTML (article)

  Human Power eJournal Issue 3 2006  


11. Power levels during stair climbing,
Theo Schmidt. -- HTML (article)

10. Determination of Cycling Speed Using a Closed-form Solution from Nonlinear Dynamic Equations,
Junghsen Lieh. -- HTML (condensed article with further files), PDF (full article)

  Human Power eJournal Issue 2 2005  


9. Analysis and Visualisation of Data Collected from Human-Electric Hybrid Bicycle-Tests,
Andreas Fuchs. -- HTML (article)

8. On Measuring Airspeed on a Bicycle,
Julian Gordon. -- HTML (article)

  Human Power eJournal Issue 1 2004  


7. Resistance on Snow or Ice,
Theo Schmidt. -- HTML (article)

6. Ventilation of Streamlined HPVs,
John Nobile. -- HTML (article)

5. Determination of Drag Parameters Utilizing a Bicycle Power Meter,
John Snyder and Theo Schmidt. -- HTML (article),  XLS (spreadsheet)

4. Numerically Controlled Routing,
Stephen Nurse. -- HTML (article), PDF (drawing), DXF (CAD file)

3. Human Powered Juice Making,
Theo Schmidt. -- HTML (article)

2. The Ventilation of Streamlined Human Powered Vehicles,
Ben Wichers Schreur. -- HTML (condensed article), PDF (full article), XLS (spreadsheet)

1. Algebraic Determination of Land HPV Velocity,
John Snyder. -- HTML (article), XLS (spreadsheet)

from the editors

The Launch of HPeJ -- HTML (article)

Human Power eJournal