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Soaring USA Erwin Building Instructions

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Erwin building instruction
www.pcm.at
Tecnical data:
Wing span [mm]:
Weight [g]:
Wing loading [g/dm
Airfoill:
Aspect ratio:
Controls:
Construction:
Fuselage
Wing / V-tail
2
]:
strengthened with carbon rovings
CFR/GFR–shell-construction without support
spar made of CFR-rovings and GFR-hoses
BUILDING INSTRUCTION
November 2006
2000
1100-1600
37,3-54,2
HQW/1,5/7mod-gestrakt
13,54
H/S/Q/W
CFR/GFR
material
ERWIN
1

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  • Page 1 Erwin building instruction November 2006 Tecnical data: Wing span [mm]: 2000 Weight [g]: 1100-1600 Wing loading [g/dm 37,3-54,2 Airfoill: HQW/1,5/7mod-gestrakt Aspect ratio: 13,54 Controls: H/S/Q/W Construction: Fuselage CFR/GFR strengthened with carbon rovings Wing / V-tail CFR/GFR–shell-construction without support material spar made of CFR-rovings and GFR-hoses...

  • Page 2: Table Of Contents

    Erwin building instruction November 2006 CONTENTS DATA 1. Kit – Contents 2. What else do you need? 3. Electronical equipment 4. Settings for the first flight ASSEMBLING THE MODEL 5. V-Tail 6. Fuselage 7. Installation of electronical components 8. Wing 9.

  • Page 3: Data

    Erwin building instruction November 2006 DATA 1. Kit – contents Kit with kitparts: Fuselage, in two parts Wing, in two parts V-Tail Steel-connector, 2 piece Carbon-connector, 1 piece Covers for servos on wing, 4 pieces Push rods, aluminium, for the elevator...

  • Page 4: Settings For The First Flight

    You should be able to switch the flaps to the ailerons: When thermaling you should use only ailerons, when doing aerobatics Erwin flies best with flaps and ailerons together. For nice rolls switch off differential (controls should make the same way in both directions, up and down).

  • Page 5: Assembling The Model

    Erwin building instruction November 2006 ASSEMBLING THE MODEL 5. V-tail The V-tail is ready prepared with holes for screws to be fixed on the fuselage. Controlling of the elevator: Bend two levers as shown below and glue the ball connectors to one end each. Then glue the levers to the control surfaces of the elevator.

  • Page 6: Fuselage

    To do this, mount V-tail and wing on the fuselage. Look at Erwin from the front and slowly lower the tail, until the ends of the elevator disappear behind the wing. If both ends of the elevator disappear at the same time, the V-tail is aligned correctly.

  • Page 7: Installation Of Electronical Components

    Erwin building instruction November 2006 7. Installation of electronical components First you have to glue the fixing board inside the fuselage, as the servoboard is fixed to this board. Drill one or two congruent holes in both boards and knock a nut into the hole of the fixing board.
  • Page 8 Erwin building instruction November 2006 Mount everything on the board and then thread it inside the fuselage. To make the aluminium pushrods move easier, you can bend the rods slightly according to the outline of the fuselage. By this way you will also gain some space on the servoboard.
  • Page 9 Erwin building instruction November 2006 Ready installed switch and socket on the outside of the fuselage. www.pcm.at...

  • Page 10: Wing

    Erwin building instruction November 2006 8. Wing The connection to the levers on the rudder goes crosswise through the wing. For easy putting in and out of the servos you can make a mounting with two pieces of plywood. Before you glue the lever to the rudder, mill a slit of about 10- 15mm in the control surface as shown on the picture to the right.
  • Page 11 Erwin building instruction November 2006 For glueing the lever use epoxy-glue with cotton flocks. When fitting the lever in the correct position, notice that the hole in the lever should be situated vertically above the hinge line. To connect the servos to the levers use two connectors M2,5mm.
  • Page 12 Erwin building instruction November 2006 Cut the covers of the servos to the correct size and glue them with a double-sided adhesive. In order to move the triangular ends of the ailerons, you can bend a piece of steel wire (1mm) and glue it into the end of the aileron as shown.

  • Page 13: Installation Of Antenna

    Erwin building instruction November 2006 9. Installation of antenna As Erwin is completely made of carbon, a part of the antenna must be situated outside the model. One possiblity is to „extend“ the fuselage at the rear end with a steel wire of about 450mm. Fix the end of the antenna to this steel wire.

  • Page 14: Before The First Flight

    10. Ballast system You can easily change the weight by varying between the different connectors. In smooth conditions you can fly Erwin with one carbon connector. Additionally to the two steel connectors you can add ballast inside the hose between the aluminium pipes. You have to remove the foam first.

  • Page 15: Fixing Of The Wing

    To avoid heating of the carbon surface, Erwin (without paint on the upper side) should not lie in the sun. During flight heating by the sun is no problem, as Erwin is cooled by the wind. On ground Erwin should be kept inside protective bags or in the shade.

  • Page 16: Erwin Building Instruction November

    Erwin building instruction November 2006 www.pcm.at...

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