ORIGINAL: flyingagin
I think many people thought poorly of them, but it was simply a lack of knowledge. The right kinds of oil and right amount, make all the defference.
I prop them more like a 4 stroke. And the fuel burn is very low compared to other 2 strokes. I have had my .65 go for more than 30 minutes on 1 tank (16 ounce) of fuel doing touch and go practice.
For oil I go for 22% with 1/2 being castor.
I was running mine on 5% nitro 20% oil SIG champion (oil is 50/50 cas/syn) but I have since converted to ALL castor in ALL of my engines. My sportsters get 5% nitro 25% castor, but they still dont idle or transition for poo. I quit using muffler pressure which gave better rpm but still a lousy idle (wont idle) and horrible transition (rich).... Grr..
If anyone has 2 good/working carbs that will fit the .65 (.622" neck) I will buy them in a heartbeat.