Cars > ARROW

Posted on Nov 19, 2013

The Arrow is a concept car I created in partnership with the Globe & Mail. It was published in their ‘Drive‘ section on November 15 2013. It’s a small electric vehicle with a narrow body, and a cockpit that opens up like a fighter jet to reveal tandem seats.

The Arrow is powered by a 30-kilowatt, liquid-cooled, double-sided synchronous motor located in the rear. The motor drives a limited slip differential that powers each rear wheel. It could become a four-wheel-drive vehicle or three-wheel-drive, but for now, I’m keeping things light and simple. Fenders have been added to the torpedo-shaped body, but we haven’t tested the airflow in a fluid dynamic software. The goal is to lower the drag coefficient as much as possible because energy will come from lithium-air batteries and the range target is to exceed 600 kilometres. I like the power-to-weight ratio ‘promised’ by this type of battery, which also releases oxygen when it’s charging.

The Arrow was conceived as a cool alternative for commuting to work, for running errands or for weekend trips to the cottage. I love to ride motorcycles, but I also hate it when it starts to rain on a ride, which is why I opted for a closed cockpit that can also be heated or cooled.

The images of the Arrow prototype were conceived by Sebastian Campos, who is based in Mexico, he also designed the Surfout concept, a motorized surfboard. A prototype of the Arrow could be built in a short period of time since a company in California already has a full cockpit sub-assembly. It coud also be possible to build a gasoline powered version first.

23 Comments

  1. Great design Charles, nicely refined. Could you possibly share the California company you mentioned that have the cockpit sub assembly? I think they could be very helpful for a one-off project I’m working on…

    Cheers & Happy New Year,
    Jay.

    • Yes no problem contact Rob Innes from SeaBreacher.com. Rob and I discussed about using his Seabreacher hull to create the Arrow. Keep me posted on your progress and good luck!

  2. Ezekiel

    I would be interested in how much it would cost or put these in production for the mainstream and the price of an individual unit. It must be noted this would be widely accepted for public use if given the chance. I would be one of the first to purchase it.

    • It all depends on the volume of production, the quality of the materials, the technology, the amount of R&D and the country we build it in. Probably 10 000$ per unit would be a realistic target if it uses a combustion engine.

  3. jerry dycus

    Sorry but the aero on this is terrible, far higher than even normal cars, much less an aero one.
    You can’t have front wheels hanging out like this on an EV as at sixty mph they will cut range by half from the increased drag. Putting an aero body behind them doesn’t do much good.Nor will wheel pants help that much as suspension and intersection drags stays high.If that want a practical EV they’ll have to cover them with an aero body.Next I hope it has a lot of battery weight very low or it’ll roll over in a hard turns.

    • I agree with you about the aerodynamic (it was also mentionned in my post). I will work on a second version with an enclosed third wheel in the middle, remove the side foilers, lower the vehicle etc. It would also be good to optimise the body shape on a fluid dynamic software, maybe a group of students would have some time for that.

      • jerry dycus

        Cool, glad to hear it. We really need lightweight EV’s that are aero as it cuts battery pack, etc size and cost making them affordable.

        As for computer design isn’t needed if one knows aerodynamics. I do it far faster, better in my Mk 1 wetware system as it has many decades of input to work from.

        When I saw the first computer simulations it struck me is I’d been doing it in my mind since I was 7 yrs old!!

        I should mention I’m doing about the same thing and already have the composite unibody/chassis/tooling built 2 seat side by side sportwagon. The body, doors, hood, etc composite parts at about 2x’s the strength of steel only weighs 230lbs in medium tech composites.

        Please don’t get caught in the Carbon fiber hype. Medium tech composites like biaxial FG, Kevlar, etc are far more cost effective and crashworthy designed right have little to no weight gain vs CF.

        Contact me off list if you like as we really need lightweight safe EV’s for our future for some cost, labor saving, etc details.

  4. When I saw that price I was thrilled I guess because I am working on a Velomobile (pedal car) and many of them coming into the country are about your est. price without the style you are bringing to the table. Probably seems a little crazy to offer a pedal version as well but if the weight without the drive train isn’t too much than some interesting transmission work like with the Nuvinci hub and some front crank works could be interesting addition without much retooling. Very cool in any form. Was the choice to go three wheel because of bike designation over “Auto”? Legislative clean up seems to be in order. JR

Trackbacks/Pingbacks

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