from what I've read there's little or no power advantage with EFI but if its injected into the combustion chamber after the exhaust port is closed then you fix the problem of unburned gasoline going out the exhaust. But then where are the crank bearings going to get their oil?
yep, agreed. efi is simply for EFFICIENCY.
and remember that jennings guy again... two strokes are partially COOLED by using excess fuel...running them too lean not only produces less power, but will overheat them....EVERYTHING ELSE BEING CORRECT FOR MAX POWER! which it is not in a standard HT.
yeah, ive read that book, and bells book at least 30 times and keep finding lil bits i skipped previously
just like some movies can be watched over and over again. only reason i hang around here is that rewriting the books truly assists with retention and understanding
(notice im not on other forums simply because i couldnt handle repeating myself that much and i do have a separate life outside!)
butre...putting oil in the crank WOULD lube the wrist pin, just like it does on every splash lubed fourstroke. but.... getting the air in there does pose a serious challenge, unless one uses the diesel method, ie, forced induction, which actually uses more power than the engine would normally produce unassisted. (well ok, it uses more power when trying to achieve BOOST, not simply scavenging. but there is added friction etc.)
only two strokes that allow for this sort of ridiculousness are BIG or are split cylinder singles, that can be timed to have the exhaust port close FIRST, due to there being two cylinders and some serious DESAXE. (google boy, google.)
note that companies like puch gave up on the "twingles" due to the extra complexity and the fact that the tuned exhaust system was vastly superior...and wouldnt work on a twingle...
people, stop being silly and concentrate on PORTS. AIR FLOW. IGNITION. EXHAUSTS. more bang equals more power and seeing as theres a billion and one twostrokes out there that make HT engines look pathetic, stock standard off the shelf... such as a "baby" stihl ms170... only 27 cc but still more power... they pay engineers to redesign them. HT just copied a 1940's design and im surprised they even used schnurle porting, rather than a deflector piston!
oh well, no use casting pearls before swine
... i got a workshop to go sort out... cant work with all my tools in a bucket!