
Geneva Motor Show Porsche 911 GT3R Hybrid Racer and kinetic drive
Not content to launch a new Cayenne in hybrid form and a stonking 918 hybrid concept at Geneva, Porsche showed a hybrid version of its new GT3R racing car. Set to race for real at the Nürburgring, this is no concept but a fully fledged 911 endurance racer. What sets it apart from the competition, particularly in the hybrid sense, is that it runs a flywheel type energy recovery, storage and power plant to supplement the 4 litre flat-six petrol engine engine in the tail rather than a battery pack.

Geneva Motor Show - Porsche 911 GT3R Hybrid racer
Electrically spun, the flywheel stores kinetic energy and transfers it back to twin front electric drive motors, effectively giving 4 wheel drive on demand. Braking electrically respins the flywheel for a 6-8 second burst of extra power and traction. No word from Porsche as to whether there are any negative gyroscopic effects in the corners (or at all), but it should be more stable at high speed if the flywheel mass is sufficient. The system appears to rely on its high rotation speed rather than pure spinning weight. And anyway most cars have four spinning gyroscopes covered in rubber; one at each corner
So how would you feel about sitting next to what looks like a personal nuclear fusion reactor ? Should be fine really as it’s just a disc spinning at, err, 40,000rpm….but at least it has been developed by Williams Hybrid Power Ltd and Torotrak so does have some F1 technology built in.
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