This bike started life as a stock 1972 Norton Combat. Since rolling out of the factory its undergone a transformation into a pure race bike. Starting with the chassis. The frame has been de-ranked, this enables the bike steer faster and strategic frame bracing optimizes torsional and flexural rigidity for racing. Front forks from a Suzuki katana were chosen offering greater valving, spring-rates, rigidity and adjustment over stock. A custom swingarm was made that’s lighter and stronger than the stock unit. Custom wheels were built using aluminium rims and hubs that allow the use of dual oversized disks up front and single in the rear. A pair of adjustable dual spring-rate Progressive shocks keep the rear well dampened.
The engine (750cc) has been completely rebuilt to race specs using rods, hi comp pistons, and high lift cam from C.R.Axtell. The crank, also from Axtell was lightened and balanced allowing the engine to rev faster with reduced vibration at high rpms. The cam has much higher lift than stock with a powerband between 5k-7k. A custom high capacity aluminum oil tank ensures the motor is supplied with plenty of clean oil. The hydraulically actuated dry clutch is connected via a primary belt drive conversion, this saves on weight and the belt transmits less shock which is gentler on the engine. A 5 speed transmission was chosen to allow for higher/longer gearing needed while racing. An electronic tachometer from Scitsu makes it easy to glance at the revs while roaring around the track.
The bike is shroud in lightweight JPS bodywork for improved aerodynamics and a lightweight 3.5 gal aluminum fuel tank from Nrovil is a quality part and looks great.