Supercharged Velocette

I became interested in HC Lamacraft after doing some research on racing Velocettes at Brooklands, and came across these two photographs of his ca.1935 mkV KTT, to which he added a blower in 1938. Supercharging a single-cylinder motorcycle isn't easy, as the intake comes in pulses - by contrast, multi-cylinder engines draw more evenly from a forced-air chamber. They work best when a chamber