Joel Dirnberger's HBluO
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The Latest Version is Available
Online at http://www.racores.com/H-Blu-O-Instructions.htm (click on the pictures to
expand) We suggest that you read through
the instructions once before starting building to become familiar with the
sequence of steps and the flow of construction |
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Items required to build
the plane:
A
Hobby Knife and replacement blades or Snap Knife
A
cork backed metal ruler, 18” recommended
CA
Glue (regular or foam safe) and kicker
EPP
Contact Glue (UHU por, Beacon Foam-Tac or Welders)
A
piece of fine sandpaper to roughen the pushrod pieces for gluing
Velcro
for attaching the ESC, Rx and battery.
Optional: four .032” EZ-Connectors for your pushrod
attachments
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1)
The
wing platform will be assembled from the following Depron parts: Wing 1, Wing
2, Wing 3 (2) & Elevon (2). |
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2)
The
leading edges of the Elevons and the trailing edges of the Wing 3s are
beveled prior to hinging. Be sure to bevel the right and left sides as mirror
images. |
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3)
Hinge
the Elevons to the Wing 3s using your favorite method. I have used Foam-Tac
hinges in this photo. |
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4)
The
forward carbon spar is glued to Wing 1. |
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5)
Check
the fit of Wing 2 to Wing 1 and the forward spar. Sand the tabs on Wing 1 if
required to insure a tight fit between Wing 2 and the spar. |
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6)
Wing
2 is then glued to Wing 1 & the forward spar. |
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7)
Glue
the rear spar to the Wing 2/Wing 1 assembly. Check the fit of the Wing
3/Elevon assemblies to Wing 2 and the rear spar. Sand the tabs on the Wing 3s
if required to insure a tight fit. |
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8)
And
glue the Wing 3/Elevon assemblies to the Wing 2/Wing 1 assembly. |
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9)
The
hatch is assembled from the Depron parts Hatch 1 through Hatch 3. |
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10)
Gently
preshape the part Hatch 1 to match the upper curve of the fuselage. Repeat
with parts Hatch 2 matching them to the curve of the fuselage sides. |
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11)
Test
fit the Hatch 2s to Hatch 1. When you are satisfied with the fit, glue them
in place. |
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12)
Test
fit part Hatch 3 between parts Hatch 2. When you are satisfied with the fit,
glue part Hatch 3 in place. Set the hatch assembly aside to dry. |
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13)
Cleaning
out the slots with an emery board or sanding stick. |
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14)
In
order to get parts to fit initially you may find it best to bevel the tab
sides so they self align in the slots. |
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15)
Gently
pre-form the fuselage sides to match the curve of the slots in the wing assembly. |
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16)
Test
fit the fuselage sides into the slots in the top of the wing assembly. Do not
glue them in yet. (The top of the wing assembly is the side without the
bevels at the hinge lines) |
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17)
With
your radio or a servo tester, center the servos and mount the arms, making a
left and right elevon servos and a rudder servo. |
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18)
Test
fit the rudder servo into the Fuse side. Enlarge the servo hole if necessary.
Mark the location where the servo arm will pass through the wing. |
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19)
Cut
the slot for the rudder servo arm through the wing. |
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20)
On
the bottom of the wing, bevel the ends of the slot to provide clearance at
the ends of the servo travel. |
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21)
Check
the size of the servo opening in the Dorsal Fins and enlarge if
necessary. |
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22)
Test
fit the Dorsal Fins and servos to the wing assembly. |
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23)
Establish
where the servo leads need to enter the fuselage, and cut a small notch in
the Fuse Sides to allow the servo leads to pass through. |
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24)
Mark
the locations for the Elevon servos on the wing. |
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25)
Remove
the dorsal fins and glue the elevon servos in place. |
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26)
Then
glue the Dorsal Fins in place. Be sure they are perpendicular to the
wing. |
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27)
Test
fit the nose Former to the front of the fuselage. |
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28)
Bevel
the edges as necessary to get the best fit. |
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29)
Glue
the Fuse Sides, Nose Former and rudder servo in place. Be sure the Fuselage
Sides are perpendicular to the wing. After the glue has dried, use an emery
board or a sanding stick to square up the top edges of the Fuse Sides. |
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30)
The
motor mount pylon will be assembled from the Depron parts Pylon 1 through
Pylon 4 and the 1/32” plywood sheet. Remove the control horns from the pylon
pieces before the next step. |
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31)
Glue
one of the plywood pieces to one of the Pylon 3s. Align and glue parts Pylon
1 and Pylon 2 to this plywood. Glue the remaining plywood piece to the
exposed sides of Pylon 1 and Pylon 2 creating a channel for the motor wires
to run through the pylon into the fuselage. Complete the sandwich by gluing
the remaining Pylon 3 to the plywood. |
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32)
Align
and glue the Pylon 4s to the upper sides of the pylon. Glue the plywood motor
mount to the pylon. Sand the pylon to round the edges and streamline the
pylon to suit your taste. |
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33)
Test
fit the pylon to the slots in the wing. Glue the pylon in place. Make sure it
is perpendicular to the wing. |
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34)
Glue
a rare earth magnet into the hole in the Depron part labeled Magnet. |
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35)
Check
the fit of the Magnet mount in the fuselage. Sand it to fit if necessary the
glue in place. |
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36)
Test
fit the Fuse Tail pieces to either side of the pylon. Sand them to fit if
necessary then glue them in place |
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37)
Gently
bend the air intake portion of part Hatch 1 down until the outside surface of
the air intake matches the inside surface of the hatch. Use a sharp hobby
knife to trim away a wedge of Depron from the inside surface of the hatch to
open up the rear opening |
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38)
Use
a gap filling adhesive to secure the sides of the air intake. |
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39)
Test
fit the hatch to the fuselage. |
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40)
Place
a second magnet on top of the first. Use a dab of paint or a felt tip marker
to transfer the location of the magnet to the inside surface of the
hatch. |
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41)
Use
a hobby knife or a rotary tool to create a pocket in the hatch for the second
magnet. |
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42)
Glue
the second magnet into the hatch. Make sure the magnet polarity is correct or
it will not hold the hatch closed. |
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43)
With
the hatch in place, preform the Depron part labeled Nose to fit the front of
the fuselage. There needs to be a bit of a bevel at the front of the Nose
piece. |
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44)
It
should fit like this. |
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45)
Before
gluing the Nose piece in place, make sure the hatch can be opened and
removed. You may need to trim the tab at the front of the hatch slightly for
the hatch to be removed completely. Once the Nose is glued in place,
remove the hatch so it doesn’t get stuck. |
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46)
Each
float consists of 5 Depron parts: Float Top, Float Inside, Float Outside,
Float Rear & Float Bottom. |
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47)
Preform
the Float Inside & Float Outside to match the curves of Float Top. |
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48)
Glue
the Float Outside to the Float Top. Make sure the side is perpendicular to
the top. |
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49)
Also,
be sure to assemble a Left and a Right float. |
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50)
Glue
the Float Outside to the float assembly, making sure the side is
perpendicular to the top. When the glue joint has dried, bevel the rear edge
of Float Top to match the sides. |
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51)
Glue
the Float Rear to the float assembly. When the glue joint has dried, bevel
the edges of the Float Top & Float Rear to match the float sides. |
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52)
Use
an emery board or a sanding stick to square up the lower edges of the float
sides. |
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53)
Preform
the Float Bottom to match the curve of the float sides. |
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54)
Glue
the Float Bottom to the float assembly. When the glue joint has dried, bevel
the rear edge of the Float Bottom and round the tip of the float
assembly. |
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55)
Test
fit the float assemblies to the bottom of the wing using the tabs for
alignment. When satisfied with the fit, glue the float assemblies to the
bottom of the wing. |
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56)
Prepare
the Rudder and Vertical Stab for hinging by beveling the leading edge of the
rudder and the trailing edge of the Vertical Stab. |
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57)
Test
fit the Vertical Stab to the wing. Enlarge the slots in the wing if necessary
for proper fit. Glue the vertical stab in place. Make sure it is
perpendicular to the wing. |
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58)
Hinge
the rudder to the Vertical Stab. |
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59)
Test
fit the Ventral Fins to the slots in the bottom of the wing. When satisfied
with the fit, glue them in to place. Make sure they are perpendicular to the
wing. |
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60)
Assemble
the wing tips by gluing 2 Tip Floats to each Tip Plate. |
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61)
Be
sure to assemble a Right and a Left wing tip. |
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62)
Test
fit the wing tips to the wing. Glue them in place when you are satisfied with
the fit. |
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63)
Make
sure the wing tips are perpendicular to the wing. |
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64)
Test
fit the elevon control horns to the elevons and measure the required length
for the pushrods. Assemble the elevon pushrods to the required length. Fit
the pushrods to the servo arm and the control horn then glue the control horn
in to place. |
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65)
Repeat
the previous process for the rudder pushrod. |
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66)
You
may want to cover the bottom surface of the floats for durability. Iron on
film covering can work well for this. Packing tape can be used as well.
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67)
Don’t
forget to tape down the elevon servo leads. |
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68)
The
motor leads may require extensions to reach the ESC through the channel in
the pylon. I extended the leads on my motor by about 2 inches . |
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69)
With
a pylon mounted motor, the slightest vibrations can become amplified to
destructive levels. It is important to run a correctly balanced propeller. I
shortened the shaft on the motor about 1/4 inch to lessen the effect of any
propeller vibration. |
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70)
The
ESC location in the fuselage. |
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71)
Install
the receiver into the plane and connect the servos and ESC connections to it.
72)
Install
a prop (APC 7x5E or 7x6E suggested) on the motor (so the prop is facing the
front of the plane) with the prop saver supplied with the completer kit.
73)
Test
the motor direction to make sure the propeller is pushing air towards the back.
If not, swap any two motor/ESC connectors.
74)
The
CG (center of gravity) should be set to the location of the hatch magnet
initially.
75)
The
recommended control throws are as follows:
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Suggested starting throws: Set your radio to use an elevon
or delta mix Trim the elevons to have a
slight bit of up reflex Rudder Full available deflection
and 30% expo |