40 class shoulder wing stunt trainer model is now under construction, 20 ribs for a main wing were molded yesterday, also fuselage plate imitated "Tauri" by Ed Kazmirsuki enlarging to 40 size. Tail stabilizers, vertical & horizontal ones would be prepared today, parts for landing gears are in my junk box news.
Several side exhaust port type motors, OS, ENYA, YS, OPS, Super Tigre and Webra would be tested on this airplane soon. Also, YS fuel pressure regulator would be burdened with some confidence because the way to adjust it is well experienced and the technology is established already.
The normal conditioned carburetor under natural aspiration and fuel pressurized speed controlling are different from each other, the change of fuel supply amount while the flight is the most inconvenient phenomena and the difference is mystified with the best betting, on the other hand, under fuel pressurized condition with crank case the first pressure, the flyer will not be distracted by the gambling main needle valve setting, of course the amount of fuel supply is stable whatever posture the airplane might take while maneuver. Without any argument, this tiny regulator valve module has great capability and potential incomparable with other devices such as diaphragm pump and gear pomp systems.
40 class size stunt model is the most suitable and appropriate for me, because the recent 40 class motors has enough power & torque comparable to old 60 motors, especially under the use with Tuned Pipe the capability exceeds 60.
Though I have prepared for going out with pleasure, I determined to stay at home and continue new model construction.
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