KC's speculation on the new HD.
Harley has historically worked with peak-power piston speeds of 3,500 feet per minute. Piston speed is just twice the stroke in feet, multiplied by rpm. Its engines, when bikes are tested on rear wheel dynamometers, tend to produce stroke-averaged net combustion pressures of 120–130 psi at peak power, and 130–140 psi at peak torque.
https://www.cycleworld.com/closer-look-at-harley-davidsons-new-975-and-1250cc-v-twin
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Jeffrey Tucker
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