Chainsaw Repair

graph is motor A from paper

top blue line is crankcase volume.
black is Vc/Vs
red is crankcase comp ratio.

idea is, that you can see what volume/CCR value needed for a particular rpm.

wanted to include the time area delivery ratio and crankcase delivery ratio graphs on this plot.  when i added a 5th range, the graph went to crap.
liking this spreadsheet software, but the graphing functionality needs some work.  going to have to show the delivery ratio stuff on separate graph.

as far as saw motors go, it is a little off.  does not seem to account for straight line, non changing situations, because of the way it is set up.
delivery ratio of a saw is pretty well close to flat.  think it could be tweaked using bsfc's, not sure.  will throw some photos up of the saw graphs later.