RC Factory Flash 3D aerobatic EPP Building Instructions

Flash 3D/aerobatic EPP model
Building instructions
Please refer to the Diagram sheet
Diagrams A, B
Press 2 carbon strips (3x0,5x800 mm) into the grooves in the sides of the fuselage central part (the „backbone").
Position the backbone on your workbench on its side, gently press if necessary and make sure that the sides are
perfectly straight. Apply thin CA glue over the carbon strips and saw off their overhanging ends.
Diagram C
Use thin or medium CA to attach the wing halves to the backbone. Note the little tabs that should help you position
the wing halves correctly. (put some down pressure on the thickest part of the root of the wing first to set the wing
at 0° incidence).
Diagram D
Locate two 670 mm carbon strips. Use sharp hobby knife to cut shallow (3-5mm) slits into the upper and lower
surface of the wing as indicated. Press the two 670 mm carbon strips into the slits. Make sure that the wing is
perfectly straight (press gently down on the workbench) and apply thin CA glue over the carbon strips.
Diagram E
Cut shallow slits into the elevator upper and lower surface as indicated. Press in two 100 mm carbon strips. Make
sure that the elevator is straight and apply thin CA glue over the carbon strips.
Diagram F
Glue (using thin or medium CA) the canopy (made of black EPP) into place. Use sharp hobby knife to separate the
fuselage upper and lower parts, cutting through the center of the little tabs.
Diagram G
Put the backbone on your workbench in inverted position (the stabilizer cutout is facing down). Use the slot in the
lower fuselage part to position the landing gear mount correctly on the backbone. Use thin CA to glue the mount to
the backbone.
Diagram H
Connect the lower fuselage part to the bacbone using thin or medium CA. Install the stab/elevator into the assembly
using thin or medium CA (control its proper alignment first).
Diagram I
Drill holes into the landing gear as indicated.
Diagram J
Use the two little screws to secure the landing gear to the backbone mount. Assemble the landing gear as indicated.
Gluing the EPP wheel pants to their mounting tabs is the last step of the LG assembly.
Diagram K
Now is the convenient time to install aileron servos. Cut appropriate slots into the wing lower surface using sharp
hobby knife. Make the slot somewhat smaller, for a tight fit. Use hot glue or thick CA to install the servos. Cut into
the ailerons and press in the aileron control horns. Make sure your servos are centered (with zero trim).
Use the pushrods, the Z-bend goes into the control horn. You may use your favourite method to connect the
pushrods to the servo arms. Making another Z-bend is the easy solution, in such case make sure that the aileron is in
neutral position and glue the control horn into the aileron as the last step. In any case, make sure that the hole in the
control horn is approximately above the hinge center line.
Diagram L
Cut into the rear bottom part of the fuselage and install the tailskid using thin CA, as indicated. Attach the upper
fuselage part to the backbone using thin or medium CA.
Diagram M
Cut appropriate slits into the fuselage rear part and the rudder, as indicated. Install the rudder using the two plastic
hinges. Make sure that the rudder throws are sufficient and apply some thin CA glue into the hinges.
Diagram N
Attach your motor to the motor mount, using appropriate screws. If necessary drill holes into the motor mount as
required by your motor.
Diagram O
Locate the 4 pointed toothpicks. Cut each of them in half. Use the 8 pieces to „pin" the motor/mount assembly to
the fuselage front end. Drive the toothpicks as deep as possible into the foam, leaving only some 6 mm of their ends
protruding. Use wire nippers to cut the protruding ends, some 2 mm