2018年7月26日木曜日

25 class stunt model on the way

The main wing of 25 class stunt for competition was completed as frame works and the horizontal stabilizer and vertical one were fabricated this morning, the areas are same as those of TETRA 20 4C, the airfoil is 18% symmetric. As I made effort to reduce the weight as less as possible, the weight was limited to 110 gr for main wing, 22 gr for H stabilizer and 10 gr for V stabilizer.
The designing of it's fuselage is not decided yet even now, probably the saggital view would be US Candy with tear drop style canopy.
Motor is OS 25 LA, not a normal model but the main schnurle port was dug on the cylinder surface and case portion, all the finger works was done by myself. The performance is remarkable as if it should be mistaken as 25 AX for pylon racing. In addition, YS fuel pressurized regulating system is invited as usual. But for this YS regulator it is difficult to keep the motor rotation in stable condition especially in up rising phase.
I'm looking forward to see it's maneuver capability ASAP.
I'm sure to aim at the top, it would not be an easy task to exceed the 60 class pure stunt models by means of the minimum size airplane powered by small 25 class motor.
Let's see what will happen in the competition scenery in future.

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