I did it! the lightest 56cc engine around
Look again at post #3. He picked up the engine for ten bucks, and I bet you could find that engine for sub-$50 if you look.
As far as everyone wanting this to be a DA, I believe you have been the only person trying to compare performance figures. Read post#1. This engine was converted to show it could be built light, not necessarily more powerful than the current $500+ BME engines. I'd call it a major success, not a failure because it turns a few hundred less RPM than the latest and greatest engine of equal weight.