RE: BME G.90 gas
The concensus of opinion a couple of years ago was that if the model would fly satisfactorily with a glow .60, then the BME G90 would be perfect, assuming the extra weight of the ignition system wasn't a problem. Lighter fuel load of the BME G90 will make up for some of the weight of the battery/ignition module versus the glow G90's large fuel load.
Keith was saying, I think, that the BME G90 ran pretty even with the glow G90. But the glow G90, being made in a smaller than normal 90 size glow crankcase wasn't as strong as the old dedicated .90 sized glow engines such as the Webra and the OS .90 glow two-strokes. Not .91 OS, the .90 OS of some years back. It was a good deal stronger than the modern OS .91FX engines run.
It gets really confusing. I understand why everyone wants to learn the results of how the BME G90 actually flew. Me too.
Ed Cregger