Grinnall Scorpion III is a reverse trike with two wheels at the front and one at the rear which gives a better-handling configuration than a single wheel at the front.

The engine, gearbox and final drive from the motorcycle are utilised with a special rear wheel which is fitted with a car tyre, as are the front wheels.

It has a good power-to-weight ratio which endows it with excellent performance.

The rear wheel is of a smaller circumference than the bike's wheel so the gearing is optimised for a lower top speed of around 125mph with 0-60mph taking around six seconds when using the K1100 engine.

The brake, accelerator and clutch operate as per a car and are adjustable for reach to accommodate drivers of different size.

The seat and steering wheel are fixed in position.

Handling is generally considered to be good due to the low centre of gravity and wide front track.

This two seater machine also has provision above the engine to accommodate some luggage which is roughly equivalen...