Over the roar from a 110-cc, two-cylinder engine, Pinnacle Engines founder James Cleeves (nicknamed Monty), pointed out a window in the block.
"You can see the cylinder sleeve moving for the intake stroke," he yelled over the din. Mostly what I could see was oil bubbling in the tiny window, hidden behind the spinning bands driving the camshafts. On the other side of the block was a bigger belt, joining the engine's two crankshafts and spinning at 4,000rpm, the current test speed. The safety glasses I was issued on entering the test room would be little … Read more