Saturday, June 28, 2008

Tesla Roadster - Electric Car Without Gearbox





Tesla Motors abandoned two speed gear boxes - replaced with single speed transmission. Getting rid of clutch, oil pump and, of course, from the gearshift, engeneers managed to save as much as eight kilograms. The gear ratio transmission changed as well - from 7.4: 1 to 8.27: 1. Transition to one speed gearbox has hit the target - 100 km/h in less than 4 seconds.

The car speed exceeds 200 km/h. Mileage until re-charge - more than 400 km. A full charge of all 6850 batteries takes 3.5 hours only!