Bicycle Page

The front fork of my ShockProof at 10000 km. Notice the funny little crack where the fork used to be welded to the steerer. The brake bolt is the only thing now holding them together.

My name is Angus Cameron. I'm a retired science teacher who has been fascinated with the simplicity and elegance of bicycles for many years. My current ride is an M5 Shockproof that I built in 2002.

On these pages I will be archiving useful web resources relating to bicycles and bicycle science, stuff that deserves to be preserved. In fact some of the material on this page had already disappeared from the web by the time I mounted this page on 2004-06-07.

In addition I have included some of my own things for my amusement and I hope your's.
Contact me here if you have any comments or suggestions.

Short Cranks

I have been trying shorter cranks for the last few weeks, in an effort to be show more kindness to my knees. The story will follow shortly.

Selected Papers from Human Power
The Technical Journal of the IHPVA

HUMAN POWER Digital Library This is a link to the entire collection of 25 years of Human Power. Due to some inexplicable posturings by some individuals this valuable archive is currently unavailable. Check back later.
Measuring HPV drag forces using an on-board microcomputer Angus Cameron, Number 41, Fall, 1995 (350 kB pdf)
Measuring drive -train efficiency Angus Cameron, Number 46, Winter 1998-99. (850 kB pdf)

Measuring Aerodynamic Drag

Drag Measurement on HPVs The author, Christian Starkjohann, is a physicist who used a data logger to accurately measure CdA and Cr (html). Christian can be reached through the contact page of his current employer Objective Development

Measurement of Bicycle Drag Coefficients by Simple Means
The author, H.W.Schreuder, cleverly used a Mini-Disk audio recorder to record speed data. He is a retired atomic scientist living in the Netherlands. mirror

Bicycle and Rider Drag Coefficients for All John Lafford's coastdown method using terminal velocity on a uniform hill (17 kB pdf)

Coast Down Test- A Method for Determining Aerodynamic Drag Olaf Slot compares the actual maximum speed on a hill to that of a computer simulation. mirror

Testing for Aerodynamic Drag: A New Method Published in Bike Tech in 1982, Crispin Mount Miller describes how Glen Brown incorporated an accelerometer in his coastdown tests on hills. 250 kB pdf

Rolling resistance testing of 20" bicycle tyres A test commissioned by Inspired Cycle Engineering, comparing the Tioga Comp Pool, Primo Comet, Conti Grand Prix and Schwalbe Stelvio at 80, 100 and 120 psi. 350 kB pdf

Miscellaneous Musings inspired by long bike rides

Effect of a cross wind on bike speed

Effect of a cross wind on bike speed revision 2

Effect of a cross wind on bike speed revision 3

A graphical look at the various models so far

a look at Millikens data