Osman Isvan is an engineer specializing in electroacoustics and an avid recreational, touring and utility cyclist. He lived in the Boston, Massachusetts, USA area for many years before moving to Nashville, Tennessee and then to California. While in Massachusetts, he was an active member of the Charles River Wheelmen now Wheelers) bicycle club, and he still has many friends here. His articles here describe a noted bicycle tour, the Tour of New England, which touched on six states in three days, as well as theory and experiments on bicycle propulsion.
-- John Allen
The Tour of New England is an iconic bicycle tour which touched on all six New England states over a three-day weekend. Osman describes its origin and history.
This is an introduction to Osman's series of articles on power production, wind and speed.
This article, which appeared in the June, 1984 issue of Bike Tech, examined how the ground speed of a bicycle would change in response to winds at different speeds and from different directions, with the same propulsion power.
The idea of modeling the cyclist as a source of constant power is rooted in the principles of biomechanics and exercise physiology. Electric vehicles, in total contrast, are constrained mainly by the amount of energy contained in a battery...
Development of wind sensors for bicycles would make power meters accessible to more cyclists, and wind-aware cycling computers would spawn new concepts such as crowd-sourced wind maps and more.
Big data as it applies to bike rides; the value of statistical analysis: Osman analyzes data from over 1000 of his own bicycle rides to see what they show, and describes what might be discovered by mining the huge troves of data held by Strava, RidewithGPS and other GPS-based mapping services. Osman makes a particularly trenchant suggestion for e-bike design based on his analysis, and discusses issues of data privacy.
Osman takes another deeper look into hills and winds.
Last Updated: by John Allen