Before that, there was a madness among amateur riders in the Isle of Man TT races for 2) having their combustion chambers "coppered." Just pull your head, take it to the platers, pay a few bob, and get it back looking like a new penny. Copper is a much better conductor of heat than the iron of that era, but copper plate, being only a thou or two thick, had zero effect on cooling. How did this one get started? Maybe it was Granville Bradshaw, an engineer of the early 20th century, who imagined that copper plating the cylinders of his nearly finless engine designs would magically fix their cooling problems.