COMPARED with the leviathans of Small Heath, Plumstead and Meriden in their heydays, it isn't much, a tiny factor and jumble of out-buildings, Portakabin and steel stock tucked behind a quiet Kent village. But small is, as they say, beautiful, this tranquil spot is the only place in England you can go to and expect to wheel away a machine to beat all comers. The firm is called Godden Engineering, and it makes possibly the best long-track and speedway bikes in the world.