Chainsaw Repair

above reference was from georgia state university.  great site.  search >sound waves>resonance>cavity resonance ......and you will find it.

plodding along, some motor books and magizines and other things use this formula to find resonance in intakes and such.

the delivery ratio paper i noted for 2 strokes uses this as well.

cool feature on the georgia state U site, it can calculate all this for you if you just plug in your motor measurements.  it also has a temperature correction feature if you decide to add that in as well.  just make sure you use the same units of measure.

since i am using the paper, if you plug in the values they list on page 11.......you will also find out that they made a boo boo.  enough about that. <edit: will look into that again, has got to be something i missed.>

paper is great info.