Construction Manual
www.oldschoolmodels.com
Page 15
in-line with the pushrods,
and that the line of holes
where the clevises attach
are positioned over the
hinge line.
For the average pilot, we
recommend that clevises
are attached to the
second outermost hole
on each control horn.
On the plans you’ll see a
callout suggesting a spot
where a hole needs to be
cut in the wing’s bottom
sheeting. This hole allows the
aileron servo wires to pass
through the sheeting and exit
the wing. Make these roughly
1/2” to 3/4” in diameter.
Cut into LP4 are SM3’s
(elevator, rudder and throttle,
servo mounts).
As we provided with the
aileron mounts, there are two
slightly different sizes to help
accommodate the slightly
different sized servos. The
pieces that are slightly larger
are designed with the etched
circle.
You’ll need glue two SM3’s on top of each other to form a single
mount. Then mount your servo to the SM3 assembly. Now slip this
in place as shown here for the elevator and rudder servo locations.
There is a bit of extra room in the TR1 cutouts to allow for precise
positioning of these mounts. Once you’ve figured out the correct
spot, mark where they should go, then remove the SM3, apply
glue and fasten it in place. Do this for both the elevator and rudder
servos. If using a throttle servo, mount it further forward on TR1,
closer to F3.
Finish the installation of your radio gear by adding the receiver,
• Now remove the canopy and cut
along the marks you just made
to separate the canopy into two
sections.
• Remove the canopy assemblies
and paint them to match your
Mambo’s color scheme.
• Once the paint has dried (and
after the airframe has been covered, permanently attach the
canopy assemblies to the airframe with glue.
• If you’re going to add a pilot figure (not included), now is the
time to test-fit, then glue it in place. You can pickup a pilot at
your local hobby shop and for a few bucks you can add a nice
look to that front cockpit area.
• Give both pieces of the canopy a quick wash in warm, soapy
water.
• Use a bit of canopy glue to attach both canopy piece in place to
the fuselage, and the canopy assemblies. So they won’t move
while the glue cures, hold them in place with a bit of low-tack
masking tape.
Step 82 - Attach the Control Surfaces
Now is the time to attach the rest the control surfaces to the
airframe, by gluing the hinges in position with thin C/A, just as you
did with the elevator.
Step 83 - Landing Gear (main gear, straps)
The pre-bent landing gear (or
landing gear from Horizon’s
Apprentice) slides into the
pre-cut slot on in LG3. Slide
it all the way, then position a
landing gear strap on each
side as shown in this photo.
Using a 1/16” drill bit, drill
through the holes in each strap, then use four of the included 2-56
x 3/4” self-tapping screws to attach the straps to the fuselage.
Use the included 1/8” i.d. wheel collars to hold each wheel (not
included) on the axles. For a maintenance free installation, file
a small flat on the axle where the set screw of the wheel collar
touches. Also use a touch of thread-locking compound to keep the
screw from loosening over time.
The following steps will show various pieces and parts which
are not included in your Mambo. These are some of the parts
we referenced as “needed to purchase” towards the front of
this manual.
The parts shown in the photos were those we had on hand.
Please pay no attention to the brand names of these parts as
aren’t recommending any particular brand.
Step 84 - Radio and pushrod installation
Shown here a few photos of the pushrods and radio gear installation
in one of our Mambo prototypes. These are shown only for a guide,
as each installation is unique, and the radio system you have might
require adjustments from what you see here.
Make sure that when installing the control horns, they are placed
