I think the EV1 had a drag coefficient of 0.19. Does not make the CD = 0.24 for a Prius build in 2016 look very good.
________________________________ From: EV <ev-boun...@lists.evdl.org> on behalf of brucedp5 via EV <ev@lists.evdl.org> Sent: Tuesday, October 17, 2017 3:59 AM To: ev@lists.evdl.org Cc: brucedp5 Subject: [EVDL] EVLN: EV Question #19: why do electric vehicles have to look so ... silly? https://www.stuff.co.nz/motoring/97760520/car-question-19-why-do-electric-vehicles-have-to-look-so-silly Car Question #19: why do electric vehicles have to look so ...<https://www.stuff.co.nz/motoring/97760520/car-question-19-why-do-electric-vehicles-have-to-look-so-silly> www.stuff.co.nz OPINION: If you're ambivalent about electric vehicles (EVs), odds-on it's down to one of two things: range anxiety or the fact they always seem to look a bit silly ... Car Question #19: why do electric vehicles have to look so silly? October 12 2017 DAVID LINKLATER [images https://resources.stuff.co.nz/content/dam/images/1/m/7/f/e/u/image.related.StuffLandscapeSixteenByNine.620x349.1m7ci0.png/1507768530182.jpg [https://resources.stuff.co.nz/content/dam/images/1/m/7/f/e/u/image.related.StuffLandscapeSixteenByNine.620x349.1m7ci0.png/1507768530182.jpg] You know Nissan Leaf is an EV because it looks silly. But it's less aerodynamic than a Mazda3 or Toyota Corolla https://resources.stuff.co.nz/content/dam/images/1/m/7/f/e/t/image.related.StuffLandscapeSixteenByNine.620x349.1m7ci0.png/1507768530182.jpg [https://resources.stuff.co.nz/content/dam/images/1/m/7/f/e/t/image.related.StuffLandscapeSixteenByNine.620x349.1m7ci0.png/1507768530182.jpg] Expect future pure-EVs to look no different to conventional cars. VW is doing it already with the e-Golf ] [image] Toyota Prius popularised the Kamm-tail body shape for eco-cars: smooth lines, chopped-off tail. OPINION: If you're ambivalent about electric vehicles (EVs), odds-on it's down to one of two things: range anxiety or the fact they always seem to look a bit silly. Or perhaps both. To many, electric vehicles are a turn-off because they lack a certain visual dignity. But are there good reasons for EVs to look like transportation pods from the planet Smorth? Yes, of course. But not all are entirely scientific. The most obvious one is aerodynamic efficiency. EVs are all about extracting the maximum distance from the limited battery power available, so it makes complete sense to have a slippery body shape. Aerodynamics really ony became a thing for cars in the 1930s, and the work of German brainbox Wunibald Kamm from that era is still very influential today. The so-called "Kamm tail" combines long, smooth body contours with an abruptly cut-off tail. The best-known Kamm-tail car is also one of the most recognisable production-car shapes of modern times: the Toyota Prius. Which did not start out as an EV, but its electrified hybrid technology did help send the automotive industry down that path two decades ago. That's why so many eco-friendly cars have looked so much like the Prius over the years. It's a very clean profile. Automotive aerodynamics are generally measured by something called drag coefficient, represented by a "Cd" number. As a point of reference, a modern family car might be in the 0.30-0.35 range. Something quite brick-like, such as a Ford Territory SUV, is more like 0.38. The latest Prius is considered extremely smooth for a series-production car, with a figure of 0.24. Even the previous (taxi, anybody?) model was 0.25. The new Hyundai Ioniq EV, which looks very Prius-like, is also 0.24. These are very impressive numbers. Simple, really. A silly shape equals smooth windflow. End of story? Not quite. The thing about the Prius and its ilk looking so idiosyncratic is that silly body shapes have become synonymous with cutting-edge eco-automobiles, which has in turn made them handy marketing tools for makers of EVs. While weird styling might turn off the EV-undecided, it'll certainly attract the early adopters who want to make a statement. So while many plug-in hybrid EVs are simply standard cars with extra batteries and a socket (think Mitsubishi Outlander PHEV), the trend for pure-EVs that run solely on battery power has been standalone/super-weird styling. The Nissan Leaf is perhaps the prime example. It looks extremely silly but it's only moderately slippery by modern standards, with a Cd of 0.28. That's still really good, but also inferior to a Mazda3 hatchback (0.26), Mercedes-Benz C-class (which actually equals the eco-champs with a figure of 0.24) or Audi A4, which achieves a remarkable 0.23. Or consider the BMW i3 EV, which is super-strange looking but only manages a Cd of 0.29. Indeed, modern aerodynamic design allows carmakers to produce very slippery shapes that are still quite classic and elegant. Tesla's Model S sedan is 0.24 and the forthcoming Model 3 is claimed to achieve 0.23 (the original goal was 0.21, which would have been astonishing). Even the next-generation Leaf looks a lot more sporty and conventional than the current model. As EV technology becomes more mainstream and carmakers start to design new generations of cars to suit a variety of powertrain options, expect pure-electric cars to become less silly looking. Or at least a lot less self-conscious. The humble Volkswagen Golf has a Cd of just 0.27 even in standard form. Little wonder that the just-launched e-Golf, which is a pure-electric model, uses exactly the same body shape. [© 2017 Fairfax New Zealand] https://electrek.co/2017/10/11/weird-ev-turns-humans-into-self-driving-cars/ [https://electrek.files.wordpress.com/2017/10/17c820_02.jpg?quality=82&strip=all&w=250&h=140]<https://electrek.co/2017/10/11/weird-ev-turns-humans-into-self-driving-cars/> A weird new EV platform ‘turns humans into self-driving ...<https://electrek.co/2017/10/11/weird-ev-turns-humans-into-self-driving-cars/> electrek.co Self-driving cars face a broad acceptance problem. People are used to cars always having been driven by humans, which has been the case for over a century, and some ... A weird new EV platform ‘turns humans into self-driving cars’ 2017/10/11 I’m aware that the headline is pretty much an oxymoron and it looks like the stupidest thing from the picture above, but please bear with me for a second … https://electrek.files.wordpress.com/2017/10/17c820_02.jpg?quality=82&strip=all&w=1024 For EVLN EV-newswire posts use: http://evdl.org/evln/ EVDL EV News Archive - Electric Vehicle Discussion List<http://evdl.org/evln/> evdl.org EVLN - EV News Archive Edited by Bruce {EVangel} Parmenter: EVLN: home | help | archive | news | privacy policy | terms of service {brucedp.neocities.org} -- Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/ Electric Vehicle Discussion List | Mailing List Archive<http://electric-vehicle-discussion-list.413529.n4.nabble.com/> electric-vehicle-discussion-list.413529.n4.nabble.com Electric Vehicle Discussion List forum and mailing list archive. Welcome to the EVDL! This forum is a web "front end" and archive for an email discussion list. If you post here and... _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub [http://www.evdl.org/images/evdl.jpg]<http://www.evdl.org/help/index.html#usub> EVDL Subscription Information and Help<http://www.evdl.org/help/index.html#usub> www.evdl.org About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by EV enthusiast Clyde Visser, is an active and vital source of information and help for people ... http://lists.evdl.org/listinfo.cgi/ev-evdl.org EV -- Electric Vehicle Discussion List - lists.evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> lists.evdl.org The Electric Vehicle Discussion List is a forum for discussing the current state of the art and future direction of electric vehicles (EVs). We define an EV as a ... Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) [https://s1.yimg.com/dh/ap/default/130909/y_200_a.png]<http://groups.yahoo.com/group/NEDRA> Yahoo! Groups<http://groups.yahoo.com/group/NEDRA> groups.yahoo.com / -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20171017/8f5174bc/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
