Chainsaw Repair

i will post up the basic res program up in a bit. it varies a slight bit from what was presented in the K&W paper, because i not not going to spend 3 hours
working out the difference in case volume between 90 and 120 degrees for this in a program, nobody is going to use anyway.
there are no motor secrets.  all this kind of thing was figured out 30 to 60 years ago.
(it is not a big difference at all, you will find this out when you plug in differing volume values).

side note:  it will help to approximately determine a case size for rpm.

imagine, that it would get folks close enough, but just like exhaust, would need some cut and try....just like every exhaust formula i have tried,
there is not pressure variable within the formula, and approximated by sound waves.

think some other formulas that make corrections and such would get closer with less cut and try. will be looking into that shortly.