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Michelin moves the motor to the tyre

Michelin moves the motor to the tyre

It might sound counterintuitive but if the future of the car is electric, then we could well see the motor move from the front of the car to the wheels. Well, that's what Michelin, Heuliez and Orange have in mind.

Issues with battery tech aside, electric motors allow for the creation of much simpler vehicles, without the need for exhausts, cooling systems, or complex lubrication schemes. The next logical step for electric vehicles is to move the electric motors into the wheel hubs themselves, replacing driveshafts, transmissions, and differentials with a much lighter set of wires and switches. The primary problem with this configuration is the huge jump in unsprung weight - basically sprung weight is the everything carried by the suspension, so unsprung weight is the weight of the wheels, tyres, suspension and, possibly, the brakes - that comes with mounting heavy electric motors inside of the wheels. Michelin thinks it may be a step closer to solving this problem with its Active Wheel technology, unveiled at the 2008 Paris Motor Show.

The Active Wheel system consists of the wheel and tyre combination, an electric motor, an active suspension system, and disc braking system all integrated into a 43kg package. Essentially, every element of the powertrain and suspension has been compacted. Smaller 6.5kg electric motors can be used because there will be two to four of them sharing the load. Use of an electronically controlled active suspension system allows for a smaller, shorter travel suspension that can be optimised for road conditions.

The Heuliez Will is, basically, an Opel/Vauxhall Agila fitted with Michelin Active Wheels
Photo credit: Michelin

The Heuliez Will - a prototype based on the European-market Vauxhall/Opel Agila - has been built in a partnership between Michelin, coachbuilder Heuliez, and the telecommunications company Orange. This front-wheel drive prototype features an unsprung weight of 35kg per wheel on the front axle and 24kg per wheel on the rear axle, thanks to the omission of rear wheel motors. Michelin points out that a conventional but similarly sized Renault Clio features an unsprung weight of about 38kg at all axles, so the Active Wheel has already saved weight there. Offsetting the weight gained by the addition of the battery pack with the weight saved by the removal of the engine, fluids, differentials, transmission, and full fuel tank, and the final tally is a Heuliez Will that's 75kg lighter than the Opel Agila upon which it is based.

The Heuliez Will also seats five, features two boots - one in the back and one in the front where the petrol engine used to live - and, thanks to the contribution of Orange, also features in-car high speed internet, as well as live traffic monitoring and navigation. The two in-wheel electric motors deliver 31 kilowatts to the front axle (if you can even still call it an axle?) and up to 61kW for short sprints and merging. The Heuliez Will should hit 100km/h from a dead stop in 10 seconds and will have a max speed of 140km/h. Three lithium-ion battery configurations are available, offering ranges of 150, 300, and 400km. Based on these specifications it should be pretty clear that the Heuliez Will is designed for urban living and commuting, not long road trips or performance driving.

Venturi's Volage is a slightly more thrilling application of Active Wheel
Photo credit: Venturi

The first batch of Heuliez Wills are testing now on the streets of France. Heuliez anticipates that they will be able to make the vehicle available in Europe, with the Active Wheel tech in place, for a limited release in 2010 and to the public by 2011 for an estimated price of between €20,000 to €25,000 (AU$39,400 to AU$49,250).

Those looking for a few more thrills, a few more kilowatts, and a much more exotic aesthetic should look for the Venturi Volage, which also features Michelin's Active Wheel system, but with a 0-100km/h time of about five seconds and a top speed of 150km/h. The Volage will see a limited production run - also in Europe only - in 2012 for an as yet unnamed price.

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So, I read today that the designer of Mattel's Barbie doll was obsessed with sex. Seriously? We need a book-length study to tell us that?

We in the land of feminist academics have been teaching the pernicious sexual politics of Barbie for years. The breasts that defy gravity, the hair, the long, long legs and of course the cruel, nipped in waist. Oh, don't forget the tiny clothes, the f*ck-me pumps, not to mention the well-equipped kitchens in every Barbie Dream House. The message of Barbie seems unambiguous to me.

Still, many students (and not a few colleagues) consistently resist seeing Barbie as a miniature sex toy, claiming instead that the doll was a good role model for little girls. (One could, after all, purchase a Barbie doll dressed as a doctor.) Or claiming, equally untenably, that toys had no impact on their ideas about gender roles or their own sexuality.

These students, mostly women, want to rescue Barbie, to protect their own childhoods from academic interrogations of pop culture and what those interrogations might reveal. That's understandable. Yet, many of these same students sit in my class pouring out of tank tops, squeezed into low-rise jeans, or tugging on mini-skirts so short they are nearly impossible to sit down in. That is, dressed like Barbie.

It's an experience I regularly have as a feminist critic of popular culture: a media event, book or news story demonstrates that I'm not wrong, my ideology is not based in "over analyzing," "hyper sensitivity," or "reading too much into things" (the three most common criticisms feminists tend to encounter). It's disappointing, frankly, to stumble so often upon evidence of society's sexism and to keep having to explain that it's there. Disappointing that Barbie was so obviously a sexed-up, misogynist, bad idea for little girls and to realize how thoroughly our culture embraced the toy anyway.

So, here we are again. Feminists were right: no one but a sex-obsessed man with a perverse idea of female anatomy would create a female toy like Barbie. And, as is too too often the case for feminists, being right isn't something to celebrate.

Dr. Bean is an Associate Professor of English at Marshall University, specializing in Gender Studies, Film and Drama. She is the author of "Post-Backlash Feminism: Women and the Media Since Reagan/Bush" (McFarland & Co. 2007). She hosts a blog on mid-life and feminism at kelliebean.com.
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Re: The Dead Piled on Top of Each Other By Sami Abdel-Shafi in Gaza City

I think it's sad... The leaders of the 2 nations should think of the innocent people that they are killing. The war that is going on should be a boxing match between the two leaders, shouldnt have to kill innocent children for other peoples mistakes. I say, "Peace to 2 great nations Ps: think of others then yourself" God Bless - Pati

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Thanks for featuring our "100 Movie Spoilers" video

Hey Homepage Daily, Wanted to thank you for featuring our "100 Movie Spoilers" video! Wanted to let you know that we're going to be releasing another spoiler video around Oscar season and we actually just released a trailer for the second season of our popular LOST parody series (first five episodes from first season was viewed over 4 million times). Check it out.

Thanks again and we'll be in touch! Benny & Rafi Fine The Fine Brothers

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Re: Pope against homosexuals

The pope is such a cunt; we must stand up against him and the thousands of child abusers on his payroll - Gerald Glover