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154 Build Your Own Electric VehicleFi g u r e 6-11 WarP ImPulse 9" motor for front-wheel-drive car s.This motor has a “shorty” tail shaft housing from a Chevrolet Turbo 400 transmissionfitted to the drive end-bell. The drive end-shaft is not the typical 1.125" single-keyedtype, but rather a hefty 1.370", 32-tooth involute spline that is identical to the tail shaftspline of a Turbo 400 transmission. In other words, this motor was designed to replacea transmission and couple directly to a drive shaft!The Advance FB1-4001Another option, the Advance FB1-4001, shown in Figure 6-12, was designed to propelEVs. One of its big advantages that should not be underestimated is that you can acquireit new from a reputable vendor. A used compound wound DC aircraft starter motor for$200 might sound great, but powering EVs was never intended to be its true mission inlife, and how much use has it seen already? With the FBI-4001 you get a motor that youcan return if it doesn’t work. In a reputable vendor you have someone to turn to foranswers to questions, technical data, and more. A surplus dealer is rarely able to offerthis capability.As I researched for this edition of the book, I noticed that the electric vehicle calledthe Tango from Commuter Cars Corporation used the FB1-4001. When I spoke withRick Woodbury, creator of the Tango and president of the company, we talked for overan hour about the state of electric cars. One of the greatest things that I had heard fromhim was that the first edition of this book helped him to create the vehicle. To paraphrase,“If it wasn’t for this book, the Tango would not have been built.” I am glad this bookmade such a contribution to the electric vehicle industry.One of the more popular riders of the Tango is George Clooney, as pictured with hisTango in Figure 6-13. Hopefully his involvement and the wonderful aspects of theTango will allow Rick to Build More Of His Own Electric Vehicles. Keep it up, Rick!!! Wayto go!Figure 6-14 shows the performance curves used in deriving Chapter 5’s data, thistime shown for values of 72 through 120 volts. Table 6-1 gives you the data from its S-2DIN and ISO thermal tests. Another advantage to buying a new motor from a reputable