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Originally Posted by knighty
If I remember correctly this Williams flywheel KERS system is shockingly heavy, 47Kg for the flywheel, 10Kg for the power electronics plus another 20Kg (approx) for the front axle based motor/generator, so approx 77Kg......... consider an F1 style KERS system weighs about 20-30Kg and its a real difference
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If I do a search, I find slightly different numbers for the weight.
- 911 hybrid 1.0: 45 kg for flywheel, 68 kg for front axle motor/generator, 130 kg in total
- 911 hybrid 2.0: 20% less than previous version, 105 kg in total
The solutions of the Flybrid and Zytek that raced last year at Le Mans have the following specifications:
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The complete Flybrid CFT KERS pictured above and as used in LMP1 sportscar racing is capable of 100 kW and 540 kJ of storage but weighs less than 40 kg. This is a full wet weight including the hardware shown, the electro hydraulic control system, KERS control unit, wiring loom, all fluids and the oil cooler.
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source:
http://www.cftkers.com
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ZPH will weigh c.50kg and produce c.40kW of power.
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source:
http://www.zytekmotorsport.co.uk/zyt...%20_system.pdf