Actually there is a spreadsheet that has the program built into it to calculate acceleration and velocity of the piston for any stroke, rod length and rpm. I have it on my computer, don't know how to attach it, maybe I'll figure it out.

R.

Note in the spreadsheet the max acceleration numbers are always at the top, where velocity = zero. These numbers have units of ft/sec^2. To convert to Gs we divide by 32.2.

60,085 / 32.2 = 1,866 Gs. At that point a 500 gram piston is exerting an outward pull of 933kg or 2,055 lb.