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Thread: Ex-7 - Electric RX-7 conversion

  1. #101
    Maximum Bitrate Crinos's Avatar
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    Familiar sight, atleast from where I live... Norway..

    Been that much snow since beginning of December here...

  2. #102
    Low Bitrate no_hazmats's Avatar
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    Quote Originally Posted by Crinos View Post
    Familiar sight, atleast from where I live... Norway..

    Been that much snow since beginning of December here...
    I've been to Bod (In the summer) and drove to the polarcirkelen at Rognan. There was still LOT'S of snow in late June - nearly the solstice. I am amazed at how mild Denmark was and Norway was not so far away, but much colder. Note the bright blue sky - Typical around here after a big winter storm to have very clear air. And we get lot's of sunlight at this time of year - unlike you....
    Shep

  3. #103
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    The shortest readily available stock rear end I know of for the Rx-7 (I own one), is 4.30. The manual is 4.10, I think the automatics are taller.

  4. #104
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    Quote Originally Posted by Crinos View Post
    Out of electric vehicles, the Tesla is the only one I know of that have an engine to each wheel.
    These guys successfully mod'd a Mini with 4 pancake in wheel motors a couple years back.
    It looks like they've split and formed a 'electric car wheel motor company'.



    http://www.pmlflightlink.com/archive/news_mini.html

    http://www.treehugger.com/files/2006...ybrid_mini.php

    http://www.proteanelectric.com/

  5. #105
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    Welcome to every winter I've ever lived through. Except the one year I lived in Atlanta.
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  6. #106
    Maximum Bitrate Crinos's Avatar
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    Sorry for linking to a Norwegian page, but since this is a Norwegian product, it where the only place I found infromation about this.
    http://www.digi.no/836851/her-er-linux-motorsykkelen
    El motorcycle with linux (bike-pc).
    This is the prototype with a range to 100km and top speed of 125Km/t.
    In the onboard computer there is GPS and a system that can point you to the nearest power station for filling up the batteries.
    They are working on a production line that hopefully will be ready in 2011 and the going price would be aprox 120.000,- NOK
    The prototype have a prototype network designed by Telenor, this new device is designed for automotive connectivity.
    The finished bike shall have features like "record my driving", "publish to YouTube/Facebook/Twitter/MyBike" and so on.

    I know I want one!

  7. #107
    Low Bitrate no_hazmats's Avatar
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    Quote Originally Posted by Zaphod View Post
    It looks like they've split and formed a 'electric car wheel motor company'.
    They don't tell the weight of the motor. Car companies and racing teams go to great lengths to reduce the weight of the wheels & tires for a good reason. Every tiny bump has to move all the mass in the wheel, which kills energy and causes wheel motion that's transmitted to the car. (Newton's first law...) and requires more suspension action to handle it. The more 'unsprung' weight, the greater the effect.

    I wouldn't want a heavy motor in each wheel.
    Shep

  8. #108
    Low Bitrate no_hazmats's Avatar
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    Quote Originally Posted by crinos View Post
    i know i want one!
    i like it!
    Shep

  9. #109
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    Quote Originally Posted by no_hazmats View Post
    They don't tell the weight of the motor. Car companies and racing teams go to great lengths to reduce the weight of the wheels & tires for a good reason. Every tiny bump has to move all the mass in the wheel, which kills energy and causes wheel motion that's transmitted to the car. (Newton's first law...) and requires more suspension action to handle it. The more 'unsprung' weight, the greater the effect.

    I wouldn't want a heavy motor in each wheel.
    Depends on the motor weight, I guess. With regen braking, couldn't you substitute motor weight for brake weight? Maybe just have a single disc for sudden stops?

    Alternately, you could hang the motor on the body/frame to keep weight on the sprung portion of the suspension.
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    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
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  10. #110
    Low Bitrate no_hazmats's Avatar
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    Quote Originally Posted by Bugbyte View Post
    With regen braking, couldn't you substitute motor weight for brake weight? Maybe just have a single disc for sudden stops?
    Generally speaking with the added weight of batteries, I'd want more brake, not less. And I reckon Disks + Rotors weigh 10-15 Lbs per wheel. I cannot imagine a motor making 20 HP or more, designed to have sufficient torque or starting from a stand-still; weighing less than 100Lbs. That's a lot of unsprung weight. (To get a lot of torque, it takes one of two things - either gear reduction, or a LOT of windings in the motor => A lot of copper => a lot of weight, either way.


    Quote Originally Posted by Bugbyte View Post
    Alternately, you could hang the motor on the body/frame to keep weight on the sprung portion of the suspension.
    Exactly! In fact that's what my RX-7, a Prius, Chevy Volt, Nissan Leaf,etc. etc. all have in common. As well as every ICE auto out there too.
    Shep

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