Technology behind GB's track cycling success


Great Britain have taken their gold medal tally at London 2012 to 22 - their best Olympic gold medal haul in 104 years, eclipsing the 19 they won in Beijing.

Laura Trott won the omnium before Hoy took his sixth gold of a glittering Olympics career with victory in the keirin.

Britain had won gold earlier in the day thanks to triathlete Alistair Brownlee and the dressage team.

So how have they done it? It's been a triumph not just for the athletes, but for the technology driving their success.

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