Large energy and heavy batteries, that is what EVs are, proper? Properly perhaps they do not need to be. Caterham has constructed a pair of prototype electrical vehicles, merely referred to as EV Sevens, to see if it might probably make an electrical automotive that delivers what its fuel vehicles present: light-weight, minimalist enjoyable.
The numbers are severely spectacular, beginning with crucial statistic with Caterhams: weight. The corporate says the EV Seven weights rather less than 150 kilos greater than a Seven 485, placing it at someplace beneath 1,543 kilos (700 kg). That is much more spectacular contemplating that it contains a battery pack with 40 kWh of usable battery capability (51 kWh whole). No vary estimates got, however the entry-level Nissan Leaf options the identical quantity of capability, and delivers round 150 miles of vary. Every thing matches within the giant model of the Caterham chassis that is at the moment in manufacturing as an providing with a bit extra inside room. Particularly, the batteries refill the engine bay and transmission tunnels.
The batteries themselves are fascinating. Caterham says that the cells are submerged straight in a dielectric resolution created by Motul with a purpose to present most cooling. We would not be shocked if this extra direct cooling system additionally helps with area and weight. The cooling is necessary, since Caterham’s objective is to make the EV Seven very observe succesful. It needs to have the ability to ship 20 minutes of full-speed observe use, adopted by quarter-hour of charging, which might in flip permit for 20 extra minutes of observe driving. That is exhausting work for batteries, which can generate plenty of warmth. Caterham has fitted a DC quick charger able to charging as much as 152 kW, which will even generate a good bit of warmth.
Moreover having endurance similar to a fuel Caterham, the EV Seven could have uncooked efficiency numbers proper on the right track, too. The motor and gearbox come from Swinden Powertrain. It is rear-mounted and makes 240 horsepower and 184 pound-feet of torque. The only-speed gearbox and limited-slip differential ship that energy to the rear, and propel the EV Seven to 60 mph in an estimated 4 seconds, on to a 130 mph estimated prime pace. That places it simply behind the Seven 420 and 485, essentially the most highly effective naturally aspirated road vehicles Caterham makes. And to match the facility, the EV Seven will get the 420 Cup’s adjustable Bilstein shocks and a set of four-piston brake calipers.
The Caterham EV Seven feels like a near-perfect little electrical sports activities automotive. Aside from the truth that it is likely to be some time earlier than we will get our fingers on one. Caterham CEO Bob Laishley stated within the press launch, “We’re going to carry this to market on the proper time when the long run technology of battery expertise permits it, and that’s why now could be the time for us to trial the idea.”
So the automotive proven right here is not occurring sale any time quickly. However the public will get to see it in particular person in July when it makes its debut on the Goodwood Pageant of Pace. And Caterham will undoubtedly carry one thing to market sooner or later as soon as it has its EV tech dialed in.