Mines bigger than yours
Raising compression too high does kick the tar out of bearings but who cares, right?
Makes a good bandaid though.
RPMs beyond 11k in the cut might wear out your piston faster but who cares, right?
Hell the about oh 40%, sounds like a cool number, yes?... isn't in the actual port work but who cares, right?
New stuff is always built better, right?
Math eh
The flow bench is about worthless on a piston ported simple chainsaw cylinder unless your just testing bolt on parts or the intake port or other intake parts. The fact is you can't test dynamic flow and wet flow on a common dry flow bench. Don't believe me go study the facts for yourself. Wet flow occurs from the popoff valve to the transfer port exits and up to a full fresh intake charge is captured then cut off by the piston. Anything before or after is dry flow and maybe or maybe not dynamic flow. The exhaust starts out supersonic and goes sonic shortly after leaving the cylinder exit window. Down stream is only dry flow on the entire exhaust cycle after combustion occurs. Once you have all the wet flow modeling worked out you can try to figure out your sign waves and your dynamic flow on the dry side. Oh one small note the flow bench is about worthless on exhaust port testing because you can not easily recreate supersonic or sonic flow on any bench type apparatus, fact. Most people really have no clue about what is actually going on inside the engine at 6K let alone 10K or more. Even the best will admit you don't know what you don't know unless you have bottomless pockets. Quote that.
Forget all those pesky bits like measuring stuff, lighter parts, bevels, chamfors, pumping losses, burn rates, parts swapping, improving flow, what not to do, stuff not related and a whole host of other interesting facts that may make or break your build commonly overlooked.
Going to port my pocket now, enjoy.
