Copyright © 2012 Ron Marston all rights reserved rev. D 7/12 5
Covering and Assembly
23. Cover all parts before nal assembly. Ultracote/Oracover Lite
is recommended, but any good lightweight covering will work.
When covering the wing halves ensure there is no twist or warp.
Use a heat gun or covering iron to carefully remove any twist or
warp after covering (g. V, W).
24. Tape the control surfaces (ailerons, rudder and elevator) to the
wing halves and stabilizers with 1/2” clear tape. Glue control
horns into slots. Aileron horns should be on bottom side and
elevator horn should be on top. Rudder horn should be on side
opposite elevator horn. Use short horns for elevator/rudder.
25. Glue the horizontal stab to the body, ensuring it is square to the
vertical rudder and wing. Sand if necessary to ensure a good t.
26. Install the motor, ensuring there is clearance with the body sides
and lower battery hatch. Wires should run through the vent hole
in the rewall, and speed control will need to be attached to
wires on inside of body.
27. Install the elevator and rudder servos into the rear of the body,
and aileron servos into rectangle holes in body. Note orientation in
picture. Glue in place with CA or use screws (g. X).
28. Glue 2” steel wing joiner half way into one side of the wing spar.
Sand steel rst to get a good bond with CA (g. Y).
29. The wing can be left un-glued if you wish it to be removable, but
for increased strength the wings should be glued to the body.
30. Install receiver in main hatch area above wing and test t the
battery, which should lay on the belly plate doubler. Use a 2S-3S
LiPoly 400 - 800 mah.
31. Attach control rods to servo horns and control surfaces. Use
Z-bend .040 piano wire for ailerons and .050 carbon rods with
.040 piano wire glued to each end (g. Z).
32. Check Center of Gravity against the plans and ensure you are
within 1/8”. Position the battery to adjust the C/G, and mark the
battery’s position. Use velcro to hold the battery in place.
33. Program radio and adjust control surface throws. High rates:
Elevator should be about 5/8” up and down; ailerons should be
3/4” up and 3/4” down. Rudder throw should be about 1” left and
right. Low rates should be 60%-70% of high rates. Exponential is
recommended.
34. Always perform a radio check before ying the 3D Guppy. Use
low rated for first flight! The Guppy is designed to take off with
a gentle toss of your hand and belly land on grass. Spoilerons
(raised ailerons) can be programmed for shorter landings.
Experiment at a safe height!
35. Have fun!
V
W
X
Y
Z
