http://www.guardian.co.uk/environment/2 ... intcmp=122
A fuel-saving flywheel first developed for use in Formula One racing cars, but abandoned before it could be used due to a regulation change by the sport's administrators, will soon be retrofitted to a handful of London buses.
Six prototype buses owned by Go-Ahead, one of the UK's largest buses operators, are currently being fitted with the flywheels for a trial beginning later this year in and around Putney, south-west London.
Williams F1, the Oxfordshire-based racing team behind the technology, predicts that its carbon-composite flywheel could help a city bus reduce its fuel use by as much as 30%.
If successful, and contingent on raising the funding, Go-Ahead says it will consider fitting the flywheels across its 4,000-strong fleet of buses.
"The fuel consumption savings being predicted are attractive even at the lower estimates of around 10%-15%," said Phil Margrave, Go-Ahead's group engineering director.
"Within three months of the trail starting, we'll know if this technology is right for us. There have been lots of flywheel trials over the years, but for various reasons they have failed. Twenty years ago, one came on the market, but it was too noisy and this concerned passengers.
They have failed before but one day someone will get one right.