©2019 Moustache Model Works, LLC
3
20cc DHC
-
2 Beaver Instruction Manual
Required to Complete (continued)
Wheels: Standard size is 3
3/4”
dia (95
-
100mm) with 5mm axle hole
Tundra size is 4
1/2”
-
5 1/2”
dia (115
-
140mm) with 5mm axle hole
5mm Wheel Collars x 4
Battery strap, hook
-
and
-
loop (Velcro),
12”
-
15”
long (30
-
38cm) (used for either battery or fuel tank)
Hook
-
and
-
Loop material for battery mounting
Sponge rubber,
1/4”
-
1/2”
thick (6mm
-
13mm) for isolating fuel tank
1/8”
(3mm) Black heat shrink tubing,
2”
long (50mm) for door handles
Adhesives
4
-
6, 1
-
oz bottles of medium CA
1, 1
-
oz bottle of thin CA
1 can CA accelerator
5
-
15 minute epoxy
30 minute epoxy
Blue thread lock
Epoxy finishing resin (for gas or glow engines only)
Milled fiber (available from BVM, item number PA
-
SR
-
1905)
Microballoons (Top Flite TOPR1090 or Deluxe Materials DLMBD15)
Liquid cement for plastic models (TES3507AT)
4 Rolls covering material
(6’
or 2m rolls)
Spray Paint (suggest Krylon primer and paint for most applications)
Craft paint for interior of fuselage,
Options
Besides the choice of power system, the Beaver offers two primary ways to customize your model. First,
you may choose either the upper carb intake or the lower carb intake (chin scoop). The chin scoop was
used on the earlier airplanes, but most Beavers we see today use the upper carb intake. Second, we
have provided both round and rectangular windows for the aft fuselage. You may choose to use one
round, one rectangular, or two rectangular windows per side, depending on the aircraft you choose to
model. If you choose a single rear window, the aft window bay is simply covered with the covering materi-
al. If you choose the rectangular window(s), the pre
-
cut forward window bay will need to separated from
the fuselage side to accommodate.
Building Notes
The 20cc Beaver was designed to minimize the need for plans during construction. The tail surfaces and
fuselage can be built on a flat surface, separate from the plans. The wings are built over the plans simply
to aid in placing the lower cap strips and the sheeting. NOTE: IF THE WOOD PARTS DO NOT MATCH
THE PLANS, BELIEVE THE WOOD! Paper plans can stretch and shrink considerably with humidity and
temperature variations, but wood is much more stable.
Use medium CA for most of the assembly. When gluing lite
-
ply parts, note that the lite
-
ply is VERY
THIRSTY, meaning it will suck
-
up and absorb a large amount of glue, especially on the edges. To ensure
the integrity of your glue joints, apply a coat of glue to the edge, wait about 30 seconds for it to soak in,
then apply more glue. Keep doing this until the medium CA stops soaking into the wood, then press the
parts together to complete the joint. Usually 2
-
3 coats are sufficient. For best strength, try to minimize
your use of CA accelerator.
The recommended build order is tail surfaces, wings, fuselage. It
’
s helpful to have the wings done when
you fit the windshield hatch in place, and it helps to have the horizontal tail done when you glue the aft fu-
selage together. There are many small details, however, especially as you
’
re completing final assembly,
that do not need to be completed in any particular order.
