See The Whole Road With Transparent A-Pillar In Tommykaira ZZ EV

3 months ago by Chris Bruce 6

Tommykaira ZZ EV

Not only does this design allow for better visibility, but it also is lighter than a traditional windshield and A-pillar.

Japan’s Tommykaira has a larger reputation as a tuner than as an automaker, but the firm’s ZZ roadster is a quirky entry into the vast segment of boutique sports cars. Now the company is giving the little model a unique feature by making the ZZ EV the world’s first vehicle with a polycarbonate-resin pillar-less windshield. The option should be available on the electric roadster this fall. You can see a comparison between the standard part, and the transparent version below.

Small, practically vestigial, pillar-less windshields were common on classic race cars, but modern rollover standards have made them too weak for modern machines. However, Teijin’s, the material’s supplier, design is thicker around the perimeter and is strong enough to eliminate needing a traditional metal A-pillar. The part on the ZZ EV “meets new Japanese standards that will become effective in July,” according to the company’s announcement.

Tommykaira ZZ EV With No Pillar On Right

The ZZ EV features a rear-mounted electric motor 302 horsepower (225 kilowatts) and 306 pound-feet (415 Newton-meters) of torque with a single-speed transmission. The roadster has a central aluminum monocoque with subframes at the front and rear. An adjustable double-wishbone suspension is at each corner and allows for tweaks to the ride height, toe, and camber.

By making the A-pillar transparent, drivers have even better visibility out the windshield. It’s potentially great for safety and would make the driving experience more immersive – fantastic attributes for a roadster. The other performance benefit is that the completely polycarbonate-resin front window is 36 percent lighter than conventional parts.

While the polycarbonate-resin is exclusive to the low-production ZZ EV for now, Teijin is looking for possible clients in the United States and Europe. This design seems useful in practically any vehicle, so we are curious to see where the fully transparent windshield might show up first.

Source: Teijin, TommyKaira

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6 responses to "See The Whole Road With Transparent A-Pillar In Tommykaira ZZ EV"

  1. Priusmaniac says:

    That is fantastic. I have always wanted to get rid of those two opaque pillars and be able to get a true panoramic front view. Not especially on a roofless roadster but just on a normal roof car. Having a panoramic view enhance safety but would also create a more spacious impression.

    1. Priusmaniac says:

      That is a latticed-shaped “A-pillar”, it has the same objective but is quite different than a completly transparent polycarbonate one.

      It would also be possible to use a transparent Aluminum compond, the Aluminium oxynitride, also called ALON. It is an extremely strong cubic spinel structure.

  2. CLIVE says:

    That thing is to small.

  3. Roy_H says:

    Is it as hard as glass? Does it scratch?

    1. alohart says:

      Not as hard as glass, so it scratches and potentially fogs over time. It’s likely the same material used for headlight covers which don’t remain clear and pristine forever.

      It would be better, although heavier, if the windshield were glass and the A-pillars clear polycarbonate.

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