Zeroshift

Currently, none of the conventional transmission designs provide an ideal option for electric vehicles. Conventional manual transmissions interrupt the drive to the wheels during gear shifting and require a clutch, adding cost and bulk to the tightly packaged powertrain of an EV. Conventional automatic transmissions, meanwhile, add bulk and also introduce a significant efficiency loss. British transmission specialist Zeroshift has now devised a multi-speed gearbox for EVs that needs no clutch--a damper inside the gear hubs and electronic control of the motor make ratio changes seamless...