Chainsaw Repair

This is a graph of the pressure volume relationship from https://en.wikipedia.org/wiki/Boyle's_law: 



If you define the volume as the ratio of Vc/Vs as in the paper, the graph is even more extreme/less linear:

^^.......this graph, if volume was on the y-axis, rpm on the x......

so close.  since volume changes with piston movement........

set it up so that it's sqrt vc /rpm and you got it.  (like in the paper)

(you will need a need to pick a known example case volume, and a certain peak value for rpm).

.......from there a simple ratio will get you case volumes and crankcase compression ratios for all other rpm points.

i did not think it beneficial to post this info yet, because it is useless without porting to a certain similar rpm point using time*areas?