Hi Paul/Rolf;

I was taking another look at the chamber volume as a function of intake
close angle for porting.
I was using the formulas from the 1981 edition of the Rotary Engine and
my results do not appear to be correct.

Can someone run through the formula/calculation for an intake close
angle of say 45 degrees?
Assuming a 13b:
e=15mm
R=105mm
b=80mm

Thanks
Cary


What page number are you looking at Cary?