Silicon Productions 
The MGB Electric Sports Car
Analysis by Warren Winovich
Page 9
An MGB electric sports car conversion
(home built design)
| curb weight | 2530 pounds |
| cross section area | 16.6 square feet |
| drag coefficient | 0.602 |
| rolling force | 0.0075[1 + (V, mph/90)2] #/lbm |
| motor | 15-kW, 3-phase, 4-pole, induction |
| 14 #-ft @6000rpm @ rating | |
| 70V @ 48 A per phase, continuous | |
| 50 kW, short-term (150A per phase) | |
| battery pack | eight lead-acid AGM, sealed units |
| 96V @ 100 A-hrs; 9.6 kW-hrs | |
| 65 milliOhms pack resistance | |
| 0.845 Peukert number: I x tP = const. | |
| Controller | Curtis three-phase inverter; 120 Volts |
| 0 – 200 Hz (4-pole stator) | |
| 20 kW continuous, 50 A per phase | |
| 60 kW short-term, 150 A per phase | |
| 95% efficiency | |
| drivetrain | direct-drive; gear ratio 8.00:1 |
| 90% power transmission efficiency | |
| top speed | 55 mph (set by motor speed) |
Figure 2. Specifications of the MGB sports car used in a performance analysis as an electric-powered car.
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