[serialk11r]

Okay so now that I finished my midterm and BSed my stat homework, I'll plug some stuff into Wolfram Alpha for you...

So 138mm rod, 86mm stroke gives 56.3986 mm/t^2 where 2pi t=1 revolution. 7000rpm=700/6 revolutions/second, so t= 6/700s/2pi=0.001364185s. So the acceleration is 30305m/s^2...does that look right? 3000g? :O

155mm rod, 86mm stroke would be 29516m/s^2.
130mm rod, 86mm stroke would be 30749m/s^2.

At 8500rpm, 155mm rod: 43521m/s^2 138mm rod: 44684m/s^2 130mm rod: 45339m/s^2

Just a note though, if you saw the picture of the crank+pistons in the other thread, there is no way the rod:stroke is >=1.6...
What would be ways of lengthening the rod without changing the block? Can you move the wrist pin up relative to the piston?