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Piwoslaw · 11-09-2010, 02:28 AM

I added data for the following 75 cars:

Audi A3, A4, A6, A8
BMW Compact, 3-, 5-, 7-series
Citroën C8, Saxo, Xantia, XM, ZX
Chrysler Voyager
Daewoo Espero, Nexia
Fiat Bravo, Cinquecento, Punto, Ulysse
Ford Escort, Explorer II, Fiesta, Galaxy, Ka, Mondeo, Mondeo Turnier, Scorpio, Windstar I
Hyundai Accent
Jeep Cherokee, Grand Cherokee
Lancia Delta HPE
Lexus LS 400
Mazda 323 C, 626, Xedos 6, Xedos 9
Mercedes-Benz C-, E-, G-, S-, V-series
Mitsubishi Colt, Pajero
Nissan Almera, Micra, Patrol GR, Primera, Terrano II
Opel Astra, Astra Caravan, Corsa, Omega, Sintra, Vectra
Peugeot 106, 306, 406, 806
Renault Clio, Espace II, Espace III, Laguna, Megane, Twingo
Saab 9000 CS
Seat Cordoba, Ibiza, Toledo
Škoda Felicja, Octavia
Subaru Legacy
Toyota Camry, Carina
Volkswagen Caravelle, Golf, Golf Variant, Polo, Sharan, Vento
Volvo 850, 940

They are all listed in the back of Piechna's book. These are all vehicles available in Europe in the late 1990's (may differ from American versions, for example the European Mazda 626 has higher suspension). The drag coefficient, frontal area and CdA are given in the book, though the Cd is usually listed as a few numbers. The author told me that he found them in different sources. Since I didn't know which number is closest to being correct, I used Cd = CdA/A. This gave a few numbers that don't look right, like Cd=0.27 for a '90's BMW, Mercedes or VW. Use at your own risk. If anyone is willing to verify any of these, please do so.

Not only did I calculate each Cd from CdA and A, I also searched the Internet for the height and width of each vehicle, plus I painstakingly converted each and every number from metric to the old-fashioned, backward units called inches and square feet. Words cannot describe how strenuous and time consuming this was, but I was driven by the faith that the fruit of my hard work will be of help to fellow ecomodders. I do hope that this forum will finally open up to metric units. Please.

I will add that I asked the author, mr.Piechna, for his permission to publish this data in EcoModder's CdA list. He replied that the rights to the book are actually the publisher's property, but personally he has nothing against it.

I wrote to the publisher 13 months ago, but since he still hasn't replied, then I assume the he also has no objections.

11-09-2010, 02:28 AM	#86 (permalink)
Piwoslaw aero guerrilla Join Date: Oct 2008 Location: Warsaw, Poland Posts: 3,701 Svietlana II - '13 Peugeot 308SW e-HDI 6sp 90 day: 58.1 mpg (US) Thanks: 1,275 Thanked 731 Times in 464 Posts	I added data for the following 75 cars: Audi A3, A4, A6, A8 BMW Compact, 3-, 5-, 7-series Citroën C8, Saxo, Xantia, XM, ZX Chrysler Voyager Daewoo Espero, Nexia Fiat Bravo, Cinquecento, Punto, Ulysse Ford Escort, Explorer II, Fiesta, Galaxy, Ka, Mondeo, Mondeo Turnier, Scorpio, Windstar I Hyundai Accent Jeep Cherokee, Grand Cherokee Lancia Delta HPE Lexus LS 400 Mazda 323 C, 626, Xedos 6, Xedos 9 Mercedes-Benz C-, E-, G-, S-, V-series Mitsubishi Colt, Pajero Nissan Almera, Micra, Patrol GR, Primera, Terrano II Opel Astra, Astra Caravan, Corsa, Omega, Sintra, Vectra Peugeot 106, 306, 406, 806 Renault Clio, Espace II, Espace III, Laguna, Megane, Twingo Saab 9000 CS Seat Cordoba, Ibiza, Toledo Škoda Felicja, Octavia Subaru Legacy Toyota Camry, Carina Volkswagen Caravelle, Golf, Golf Variant, Polo, Sharan, Vento Volvo 850, 940 They are all listed in the back of Piechna's book. These are all vehicles available in Europe in the late 1990's (may differ from American versions, for example the European Mazda 626 has higher suspension). The drag coefficient, frontal area and CdA are given in the book, though the Cd is usually listed as a few numbers. The author told me that he found them in different sources. Since I didn't know which number is closest to being correct, I used Cd = CdA/A. This gave a few numbers that don't look right, like Cd=0.27 for a '90's BMW, Mercedes or VW. Use at your own risk. If anyone is willing to verify any of these, please do so. Not only did I calculate each Cd from CdA and A, I also searched the Internet for the height and width of each vehicle, plus I painstakingly converted each and every number from metric to the old-fashioned, backward units called inches and square feet. Words cannot describe how strenuous and time consuming this was, but I was driven by the faith that the fruit of my hard work will be of help to fellow ecomodders. I do hope that this forum will finally open up to metric units. Please. I will add that I asked the author, mr.Piechna, for his permission to publish this data in EcoModder's CdA list. He replied that the rights to the book are actually the publisher's property, but personally he has nothing against it. I wrote to the publisher 13 months ago, but since he still hasn't replied, then I assume the he also has no objections. __________________ e·co·mod·ding: the art of turning vehicles into what they should be What matters is where you're going, not how fast. "... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell [Old] Piwoslaw's Peugeot 307sw modding thread