80mph on a bicycle!

For cycling enthusiast Tom Donhou, there has only ever been one mission. To ride as fast as he possibly can on two wheels.

In a bid to prove what can be achieved through backyard engineering, he has custom-built a bike which reached speeds of up to 80mph.

A London-based bicycle frame builder by trade, Donhou invented a 104-tooth chainring to achieve the goal. And in another tribute to British engineering, he wanted to use a car to block the wind to reduce wind traction.

The current land speed record for a bike (not bycycle) is 167mph which was set by Fred Rompelberg using a dragster in the Salt Flats.[via]