The definitive handbook on DIY electric vehicle design and construction — now completely revised and expanded to cover the latest technologies and enhanced with exclusive online content
Custom-built for environmentalists, engineers, students, hobbyists, and mechanics, Build Your Own Electric Vehicle, Third Edition is the guide to making or retrofitting an electric vehicle. Written by one of today’s top authorities on EVs, and featuring contributions from an internationally recognized team of engineers and educators, this new edition details all the latest breakthroughs in electric vehicle (EV) technologies, including AC propulsion and regenerative braking systems, intelligent controllers, batteries, and charging technologies—all presented in simple, clear, and easy-to-understand language. A new web feature provides online supplier and dealer lists, which the author will continue to update throughout the life of the book.
Features automatic conversions instead of complex mathematical equations
Expansion on global electric car information, with data from the Electric Auto Association of Europe, which was begun in July, 2008, and specific information from around the world, particularly from Australia, England, India, Korea, Japan, and South Africa
Equal coverage of AC and DC systems
Covers:
Electric Vehicle Benefits; Electric Vehicle History; Drive Systems, Chassis, and Designs; Sources, Parts, Conversion Companies, and Experts; Calculating Torque Curves; Electric Motors; Controllers; Batteries; Chargers; AC/DC Drive and Controller Packages; Visions for Future Electric Cars and Electric Car Conversions
About the Author
Seth Leitman is the Managing Member for ETS Energy Store, LLC, a green living and renewable energy consulting company. Prior to this, he worked for the State of New York where he was instrumental in adding more than 3,500 alternative-fueled vehicles and buses to fleets statewide. Leitman also served as the Market Development and Policy Specialist for the New York Power Authority, where he helped create, roll out, and run electric and hybrid vehicle programs serving the New York City metropolitan area. He has a large following on his blog, greenguruguy.com, Discovery’s PlanetGreen.com, Mother Earth News, and other media
Build Your Own Electric Vehicle 
In the new edition, page 126, Table 5-1, the expression of a’ is introduced into the equation, but there is no explaination of how the quantity of a/21.95 is derived. Can an explaination be provided?
Thanks,
Thomas Boyd