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top speed competition.(1 post)

top speed competition.ishmael
Mar 8, 2003 10:35 AM
The traditional Cycling World Hour Record is the most famous in cycling, with records being kept as far back as 1876 when Frank Dodds of England pedaled 25.506 km (15.8 mph) on a high wheeler. In the past some of the best professional racing cyclists in the World have held the hour record including Marcel Berthet, Oscar Egg, Fausto Coppi, Eddy Merckx, and Miguel Indurain. The current hour record for traditional cycling is 56.137 km (34.882 mph), set by English professional Chris Boardman in 1996 on a conventional aero track racing bicycle. However, streamlined HPV's are more than 20 kph faster than Boardman, and they are powered by amateur racing cyclists. Using the sleek streamlined HPV "Varna", designed and built by George Georgiev of Canada, Canadian amateur Sam Whittingham holds the current unlimited HPV record of 79.136 kph (49.173 mph), set in 1998.

A computer model of the HPV hour race, indicates it will take a combination of a national caliber racing cyclist, riding a World class HPV such as the Varna, along with an excellent course and ideal conditions to claim the Dempsey - MacCready Prize. It will be difficult, but it can be done. The required human power is formidable. Only top competitive cyclists can manage the more than 400 watts necessary to cover 90 km in one hour (0.54 horsepower).

Briefly, the simple prize rules require a single rider HPV on a circuit course closed to automobile traffic. The HPV can be no larger than 1.5 meters high, 1 meter wide and 3.1 meters long. The size limits are to minimize the effect of wind on propulsion. Any number of wheels are legal. There are no elevation, wind or grade restrictions.

The Dempsey - MacCready prize was created to inspire innovation in human powered vehicles and to promote ultra light, low energy consumption, high speed human powered transportation.