No one is going to ride a Ducati sportbike with giant cylinders on full throttle at 1,300 rpm (Ducati got up to 112mm in its World Superbike V-twins before switching to the V4 R with four 81mm cylinders). There are two good reasons for this: First, in general, the bigger the cylinder bore, the longer combustion takes, so lugging it down to 1,300 rpm is just asking for detonation. Second, with its longer valve timings aimed at making higher-rpm power, that Ducati is weak as a kitten at 1,300 rpm. To make power at higher revs, it’s necessary to leave the intake valves open for quite a while after bottom center to let the high-speed intake flow keep coasting into the cylinders. But when we try to ride with such late intake closing at 1,300 rpm, the intake flow is moving too slowly to keep coasting into the cylinders. So the rising piston stops the flow and reverses it, pushing mixture back out of the cylinder. What is trapped in the cylinder when the intake valves finally close is not a full charge, making torque weak.