ORIGINAL: Flypaper 2
As RCIGN says, do away with the speed limiter. If it's rich in the midrange, let me know.
Interesting, I guess I'll just replace that with a plug. Although I don't think that is the limiting factor in this case, since the top RPM was almost identical with all carbs I tried. After examining the intake manifold some more, there is a molded in "bump" down in the intake. It's big on the carb side, and on the engine side, but necks down in the middle, I assume this is some sort of "rev limiter" just to keep the airflow down. I enlarged it, so I have a constant diameter all the way through. Although it will be a while till I can run it again, I am having a prop hub made, and in the meantime I'm grinding and sand blasting on the crankcase.
