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  1. #1
    Bike ≠ Car ≠ Ped. BarracksSi's Avatar
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    New electric bike wheel - "Copenhagen wheel"

    http://www.nytimes.com/2009/12/15/sc...th/15bike.html

    The Senseable City Laboratory at M.I.T. has designed a wheel that captures the kinetic energy released when a rider brakes and saves it for when the rider needs a boost. While technically sound, the wheel’s true challenge may be in winning over cyclists. For centuries, bikes have been beloved for their simplicity, not their bells and whistles.

    But, said Carlo Ratti, the laboratory’s director, “biking can become even more effective than what it was.” What the lab is working on, he said, is “Biking 2.0.”

    The new wheel uses a kinetic energy recovery system, the same technology used by hybrid cars, like the Toyota Prius, to harvest otherwise wasted energy when a cyclist brakes or speeds down a hill. With that energy, it charges up a battery inside the wheel’s hub.

    The sleek red hub, called the Copenhagen Wheel, was to be unveiled Tuesday morning in Copenhagen. It can be retrofitted to any bike’s rear wheel, and it includes sensors that track air quality, a meter that logs miles and a GPS unit to track routes. All that data can be sent via Bluetooth to a rider’s smartphone and shared with others.
    Steve Hed was asked about it, too.

  2. #2
    AEO
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    so... how much does it cost?

    one of the biggest problems with the prius, even with all its technology, is that it is so heavy, that it doesn't really get any better mileage than a comparable diesel that's much cheaper.
    now, since all this is applied to the bike wheel... just how heavy is it?

    sounds better if they just called it a 'light electric scooter'
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  3. #3
    I am a caffine girl colleen c's Avatar
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    Quote Originally Posted by AEO View Post
    so... how much does it cost?

    one of the biggest problems with the prius, even with all its technology, is that it is so heavy, that it doesn't really get any better mileage than a comparable diesel that's much cheaper.
    now, since all this is applied to the bike wheel... just how heavy is it?

    sounds better if they just called it a 'light electric scooter'
    Good point.

    Just like everything else in the bike marketing world, eventually the cost will be inversley proportional to the weight.

    It does sound interesting though, therfore I'll put it on my Christmas wish list.
    "Difference between a well dressed cyclist riding a two wheeled bicycle and a badly dressed cyclist riding a Recumbent is only a-tire"
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    Some people got their head so far up their butt such that the only thing they hear is muffle when trying to explain anything to them! I only wish they take it out sometimes to smell the roses.

  4. #4
    Senior Member dynodonn's Avatar
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    Pretty scary, I was just thinking of this very type of setup while riding my bike yesterday. Lo and behold, in the papers the very next day.

  5. #5
    The Professor akohekohe's Avatar
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    The Bionx already does this so I don't know why these people claim it is such a new innovation.
    The more you drive the less intelligent you are. - Tracy Walter as Miller in Repo Man.

  6. #6
    Que CERA, CERA jefferee's Avatar
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    Quote Originally Posted by akohekohe View Post
    The Bionx already does this so I don't know why these people claim it is such a new innovation.
    The major differences are:
    -The battery is integrated with the hub motor/generator
    -Gear shifting and changing the power assist configurations are done from a smart phone via bluetooth

    Here's a picture... why do I get the sense that there's not a lot of participation in this project from bike enthusiasts?
    (hint: look closely at where the chain meets the hub)



    The website, apart from that picture, seems pretty well done-up.
    http://senseable.mit.edu/copenhagenwheel/index.html
    Quote Originally Posted by MajorMantra View Post
    Cycling (taken to the typical roadie extreme) causes you to cough up your own soul as every fibre of your worthless being sings in choral agony. Once you embrace the pain everything is dandy.

  7. #7
    Bike ≠ Car ≠ Ped. BarracksSi's Avatar
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    Quote Originally Posted by jefferee View Post
    -Gear shifting and changing the power assist configurations are done from a smart phone via bluetooth
    That's probably the dumbest part of the whole design. Yeah, I could use my iPhone, but not everyone has one, and of those who do, they don't want to be sucking down the battery with an app running in the foreground during the ride.

  8. #8
    AEO
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    Quote Originally Posted by jefferee View Post
    The major differences are:
    -The battery is integrated with the hub motor/generator
    -Gear shifting and changing the power assist configurations are done from a smart phone via bluetooth

    Here's a picture... why do I get the sense that there's not a lot of participation in this project from bike enthusiasts?
    (hint: look closely at where the chain meets the hub)



    The website, apart from that picture, seems pretty well done-up.
    http://senseable.mit.edu/copenhagenwheel/index.html
    I was about to say the bike image is flipped...
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  9. #9
    I STILL miss East Hill :) Rollfast's Avatar
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    Quote Originally Posted by akohekohe View Post
    The Bionx already does this so I don't know why these people claim it is such a new innovation.
    So far I can't see HOW this helps a 270lb guy take 40lbs of groceries, etc home any better than said 270lb guy.

    Mein gott, I so love cruisers.

  10. #10
    Senior Member nwmtnbkr's Avatar
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    I'm not sure this will ever make it to market, despite the hype. I believe it will be hard for them to compete with lower-priced hub and non-hub motors that have good torque. They might get excited in the flat lands of Denmark, but if you have any hills, you know that you need torque, which requires power.

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