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This the bigest R/C airplane I was build . The super Chance Vought F4U Corsair with some modified in 3D view plan was been to choice . More light , strong material had been used to contruct this model airplane ;but the balsa wood and flywood are is usually the good materiel to made its . The contruction of this aiplane is all balsa and fly wooden air-frame; covered by thin light silver PVC and some part was contruc by composit fiberglass . I thing this the bigest scale wooden R/C model airplane , with 64 cc gas engine DLA this is the best low wing R/C airplane which I can do .

Wing : Was an 7296 square inch W form wing and all wooden contructional wing .The wing- airfoil is NACA 1312 ..and this a one piece W form wing . The wing is attached with the fuselage , fixed by eight aluminium screw installe inside the fuselage . The two aileron system ( see pigures ) .are independable . Each control by one 10,5Kg servos , installed hide into the wing .The hinges of the aileron are four plastic hinges installed at the middle of the rear wing bar . More hole in the wing foil lamina was reduce more the total weight of the wing . All covered by silver color PVC

The flap are installe in 03 piece each and movable up and down synchronized

Fuselage :The main contruction of the fuselage is all wooden air-frame with four main bar 10/7 x 170 of eine hard wood ( see plan ) and covered by 3mm balsa wood .This is the strongest , lightest and finished fuselage I was build . The standing of 64cc gas engine is four standing engine or hard wood standing deck fixed on two layer of plywood ( see pic ). Down 1.5 to 2.5 degree and 1,5-1,7 degree to the right 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 ) .

Engine : You can use the gas engine from .52-.64cc. The 64cc gas engine had been choise foe this airplane . I change the standard muffler by an new exhaust tube muffler ( see pic ) , more noisy but by this the power can up to 5% and I can change the normal 18x10 by the 23x8 propeller which this has any trouble ( see pic ) . The engine fixed on the mounting -desk by four steel tube and renforced by four triangle 3mm steel plate for reduce the horizontal vibrating of the engine ( see pic )

Gear system : The system retractable F4u gear are up and rotary 90degree into the wing . An steel tube 10mm fixe on two perpendicular tooth wheel ( see pic ) get it can retracted and rotary smootly. Springtable system of this gear to reduce the force landing and get this airplane on good sweet and safe landing ( see pic ) . The rear gear fixed with rudder servos and sprintable

R/C system , servo & other link installation : Fourt 10,5kg-servo for elevator , aileron & one standar 3,5kg servo for throttle-valve . An 11,5kg servo was using for rudder and tail wheel , two servos 10,5kg for flap . . The battery are fixed in lower , on front of the fuselage and adjust for the CG ( Center of gravity ) at 25%-27% from the front of the wing cross section . The receiver was place on the highest of the fuselage nearby the CG and sticking on the base of a rubber foam-sheet for reduce the vibration of engine and the shock .

The elevators are connect with two 6mm carbone fiber rod tube with two 3mm steel wire fixed at the end and fiixed on two 10,5kg servos ( see pic ) . These are light , hard and had any trouble in working .The rudder was intalle directly to the rudder servos and fixed with rear tail wheel ( see pic )

Rudder , elevator , aileron adjust & flying test : Up 1 inch and down 2/3 inch for elevator . Right 1 - 2/4 and lelf 1-2/4 for rudder and 2/3 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 ).

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

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