Huskybill
Addicted to ArboristSite
I often wondered why the two stroke chain saw engines don’t follow the dirtbike engines. The dirtbike engines use a rotating or gillitine valve on the upper exhaust port to raise the exhaust port starting at mid throttle to the high end on the throttle. I figured a cable like the throttle cable can be run to a rotating exhaust port. Not to load the engine with a mechanical governor. It would be a increase in power at the high end and still have torque starting off the bottom.