THE ULTIMATE WHEELIE BIKE
The bike started life as a Vertigo Combat Ice Hell 300, a 300cc fuelinjected two-stroke trials bike. It produces 31bhp and has a six-speed gearbox. This fuel injection will help with the wheelie because there is no need to get the tilt right for the carb in order for the bike to run.
A bigger fuel tank has been designed to hold an extra four litres of fuel over the standard 2.7-litre item, which would not be capable of getting Lampkin all the way round the 37.73-mile course.
There are pedal-like footpegs on the rear axle so that he can stand comfortably during the wheelie attempt, developed by Hope Tech – one of Lampkin’s sponsors – which are floating, rather than fixed. There are two rear brake levers – one at the rear and one on the handlebars where the front lever should be. These lead to two calipers, allowing him to switch between them to stop the fluid boiling.
There is an electric motor on the front wheel to keep it spinning for the entire lap. This continuous spin helps keep the bike in a straight line. However, this spin of the wheel is also constantly trying to pull the front wheel down.
The gearing has also been altered, with two teeth added to the back sprocket and one less on the front.
The bike also has a small cartridge gearbox, which means no risk of oil starvation mid-wheelie.
Lampkin has also been testing a brake cable attached to a harness, which will stop the front wheel if he adds tension, and allow it to spin again when the tension is released.