Ok Guys, Here is the scoop on what I have on the Ellison carb so far. I was running a 32mm Aerocarb and having poor results. Why did I choose the 32mm? It was recommended by William and also by Aeroconversions. Aeroconversions said the 32 was running 0-200s with no problems. I simply could not get smooth performance from the 32mm Aerocarb either as a gravity fed carb or a pressure fed carb. It would idle fine but badly hesitated when I applied throttle. After many trial and error test, I decided to ditch the Aerocarb. I have now acquired an Ellison EFS-2. That's right, an EFS-2. I know William recommends a EFS-3A for the Corvair engine but I had a chance on this carb so I took it. So far, I am extremely pleased with the performance I am getting. The Ellison EFS-2 is a 35mm which is larger than the Aerocarb I had. I have it being fed by a Facet pump with no header tank. I am achieving a 600 rpm idle. The engine simply purrs like a sewing machine at idle through full throttle. There is absolutely no hesitation when I advance the throttle. The mixture gives me close to a 50 rpm difference between full rich and full lean. I am turning a Sterba 56x64 wood prop at 2750 static. I can cycle the engine up and down repeatedly with no hesitation or vibrations. The Ellison, in my opinion, outperforms the Aerocarb on my Corvair set up. All of the testing I have done so far with the Ellison has been brief due to the extreme cold temps up here in the last few weekends. I hope soon I can fine tune the mixtures, re-set the engine timing, tweak a few other things and see if I can get more static rpm. I think I can.
Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html
