Inevitably, there came the talk that "That center cylinder there, she runs real hot." That was not our experience; a properly set up engine ran fine on all three. And on the H1-R road racer, the center cylinder always ended up jetted leaner than the outers. Why? 120-degree Triples don't shake vertically, but they do have a strong rocking couple. In fact, the crank moves just like a double-bladed kayak paddle. That means that its center cylinder pretty much sits still, while the #1 and #3 cylinders whip around in orbits. That, by somewhat frothing the fuel in their carb float bowls, made them run a couple of jet sizes leaner than the center.