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This the first two piece detachable low wing with gear on wing that i was made .The origine airfoil is NACA 1313 with dehydral angle are 3 degrees . .More light , strong material had been used to contruct this model airplane ;but the wood is usually the good materiel to made it. The main contruction of this airplane is all balsa wooden air-frame renforced by hard-wood and covered by thin silver solar film with some part are PVC covered . Gear are fixed on wing ,sprintable and two piece off wing are attachable to fuselage by two alumium tube and one steel tube ( see on the next )

Wing : Was an 998 square inch and all wooden contructional wing .The wing- airfoil is NACA 1312 and fixed to the fuselage by three metal tube . The two aileron system ( see figures ) .are independable . Each control by one 3,5 Kg servos , installed hide into the wing .The four hinges of the aileron are installed at the rear wing bar . The flap are installed and acted by one servo hide into fuselage . All covered by silver solar film and blue PVC on some part of the wings.

Fuselage :The main contruction of the fuselage is all wooden air-frame with four main bar 7/7 x 120 of epine hard wood ( see plan ) . The standing of nitro engine is alumium standing engine or hard wood standing deck fixed on two layer of plywood ( see pic ). Down 2 to 2.5 degree of the engine axis are require .The fiberglass canopy and wide sufficement opening air intake had given a very good form and firm mouting (see pic ) .

The attachement of the wing to the fuselage is three tube : Two 21 and 16 alumium tube to fixe the wing and one .16 stell tube for the gear . All are fixe to the fuselabe by six screw ( see pic )

Engine : You can use the engine from .91- 108 . The 91 Vmax nitro engine and 3.5 degrees down was choice . To augmente the power of this engine , i had expanded the inner plate and the exhaust tube ( see pic ) , and by this I can use the 14x6 propeller with any trouble

Gear system : This was a fixing gear and which is an new concept sprintable fix gear ( only one in R/C airplane world ..) . All contruction is stainless steel 2x1 cm , sprintable and solder by high plasma argon sold -tech ( see pic ) . More hole on steel bar will reduce it weight , two 10cm wheel are the best choice .

The flaps systeme : I used only one 4.5 kg servos which installe into fuselage , for flaps systeme . Flap are mixing with elevator , full down at 40 degree , elevator slight down 3,2 degree

R/C system , servo & other link installation : Six 3,5kg-servo are installed , two for for elevator ,one for rudder , two for aileron & one mini servo for throttle-valve . By i has nomore time to recharge the lipo polymerase \battery , I use the 11volt nicad cadmium five cellserie AAA battery The battery are fixed fuselage nearby the fuel tank on the rear of engine ( see pic ) . One bec multihead 5Amp each to supply power for the servos and the Turnigy 8channel receiver ( see pic ) , . The receiver was place on the highest of the fuselage in the pilot copit and sticking on the base of a rubber foam-sheet for reduce the vibration of engine and the shock ( see pic ) .

The rudder and elevator's rod are two 2/8 carbone rod tube with two 2/32 steel wire fixed at the end ( see pic ) . These are light , hard and had any trouble in working Rudder , elevator , aileron adjust & flying test : Up 2/3 and down 1/3 inch for elevator . Right 3/4 and lelf 3/4 for rudder and 1/2 inch for the aileron . On the first fly , reduce some in the angle-effect for the aileron an elevator and slight trim down on elevator ( on the first test flight ).

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On a clear and calm sunday morning , I made my first flying test .

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