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Model aircraft section - Aileron equipped Junior 60 model plane conversion page 2
Pictures and information of the converted model aircraft.
The aircraft ready for an early test flight at the flying field. Early flights used a helicopter engine.
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Sheep mown flying field, pity they leave the tough bits of grass which get tangled around the propellor.
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Flying time for the old red bird and it's new wing.
The new heli motor fired up very easily with the first application of the starter. A very rich setting was used for the first 4oz tank of fuel and the engine allowed to burn through this on the ground.
Once refueled the engine was leaned out a bit and a take off attempted, still too rich. The engine was running cool so a leaner needle setting was applied, enough to get sufficient power to get the plane off the t1^d field (sorry flying field).
Into the considerable wind, lined up to avoid most of the sheep's black markers full throttle is applied and after 20 yards or so she unsticks herself from the ground. The engine is still running rich but has plenty of power to gain height quickly.
Some aileron trim is required and a little down elevator trim is set, this gets the plane flying straight and level with not much more than a fast tickover from the engine.
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Successful flight of the modified model aircraft
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The fuselage and tail plane on this aircraft are the thick end of two decades old as I write this, I remember watching Stay Tooned on TV as I soldered the closed loop linkages for the rudder control of the model.
A frightening thought, where the heck does it go?!?!.
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This Super Junior one and a half as it's now called flies just like the last one of these I made. Positive aileron and elevator response and very forgiving handling. The aircraft coped extremely well with the rather turbulent weather conditions, better than the standard heavily dihedralled Junior 60 would.
The tank was run dry on this running in flight and a glide approach landing made into wind, easy job.
For the next flight the engine was again leaned out some more to a higher power setting.
Take off run for the plane this time was much shorter, the climb out steep and fast. This time some aerobatic manouvers were flown with the model. Inside loops big and small, rolls and combinations of these were performed easily and smoothly. The aircraft flies much like a biplane scale aircraft, able to perform tight manouvers nearing the stall point without control authority being lost.
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The model will later be fitted with a SC25 2stroke engine when the heli engine is fitted to the Century Hawk.
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The climb rate of the model is very good, even with the new engine being run in while flying. When this motor is run in properly and giving full power the climb rate should be terrific. It's meant for a new model helicopter but will be well and truelly run in by the time it leaves this aircraft.
A very successful conversion of the old Junior 60 radio control vintage aircraft. The free flight Junior 60 was designed I believe in the 1930s, I wonder what the designer would reckon to this version of his creation?
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Model plane article page one
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