PART TWO
Last month we made a bit of a start on the frame, but it ain't no good without summat to make it go, and I chose BSA's mighty B50 motor. I'll expand a little on why.The A65 is great, and at 270lb it's as light as an A65 can be. But not as light as a race bike can be. And it's a twin; twins don't find grip as well as singles. Singles find more grip due to the spacing in the power pulses - it's the opposite of cadence braking, and the reason the four-cylinder GP
