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When it comes to gearboxes in battery-electric vehicles, the more may be the merrier. That's one theory, and Plug In Cars says that the standard, single-gear EV configuration may eventually go by the wayside as engineers figure out how to better use multi-gear configurations to improve performance and range. It's an argument we've heard time and time and time again, but the added weight and complexity of a transmission means it's not been a popular choice in real-world used.

UK-based transmission engineering and control specialist Vocis wants to take electric vehicles in another direction, one with dual clutch transmissions. Vocis says its dual clutch transmissions provide seamless shifting and up to 15 percent improvement in EV efficiency. Vocis' DCT is currently on display in a Mercedes-Benz Vito minibus demonstration vehicle.

German transmission specialist Getrag used the floor of the 2011 Frankfurt Motor Show to reveal its groundbreaking, dual-clutch transmission for electric-drive vehicles.

UK transmission engineering and control specialist Vocis will show off its electric vehicle-specific, two-speed transmission during the Low Carbon Vehicle Event 2011 at Rockingham Motor Speedway over in the UK.

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