Twisted Hobbys Backyard Series User manual

Rev: 2015.04.22.v03a page 1
USA Distributor
Twisted Hobbys
www.twistedhobbys.com
Backyard Series Yak / Slick / Edge / Sbach
MOTOR: 23-30G 50 WATT OUT-RUNNER
ESC: 12 AMP
SERVOS: 2X 5g / 1X 9g
PROP: 8x4.3 OR 9x4.7
BATTERY: 2S/3S 450mAh
RADIO: MIN. 4 CHANNEL
WINGSPAN: 32 INCHES
LENGTH: 30 INCHES
AUW: 7.2 OZ. W/LANDING GEAR

Rev: 2015.04.22.v03a page 2
SAFETY NOTES
 Before assembling and flying this model, read carefully any instructions and warnings of other
manufacturers for all the products you installed or used on your model, especially radio
equipment and power source.
 Check thoroughly before every flight that the airplanes’ components are in good shape and
functioning properly. If you find a fault do not fly the model until you have corrected the
problem.
 Radio interference caused by unknown sources can occur at any time without notice. In such a
case, your model will be uncontrollable and completely unpredictable. Make sure to perform a
range check before every flight. If you detect a control problem or interference during a flight,
immediately land the model to prevent a potential accident.
 Youngsters should only be allowed to assemble and fly these models under the instruction and
supervision of an experienced adult.
 Do not operate this model in a confined area.
 Do not stand in line with, or in front of a spinning propeller and never touch it with any object.
IMPORTANT: PRIOR TO ANY ASSEMBLY
Please Note: after removing kit from shipping box, lay each piece flat on a
hard surface, this will allow the airframe to straighten out if lightly bent
from shipping. Do not worry since EPP is very pliable and can be bent back
if out of shape.

Rev: 2015.04.22.v03a page 3
TWISTED HOBBYS
Website: www.twistedhobbys.com – email: [e-mail]
Thank you for your purchasing a Twisted Hobbys‘ model. Please read through the entire manual before beginni ng to
build this model. If you have any questions please contact us at the above indicated email address.
WARNING INFORMATION
This R/C Aircraft is not a toy! Read and understand the entire manual before assembly. If misused, it can cause serious bodily harm and
property damage. Fly only in open areas, and AMA (Academy of Model Aeronautics) approved flying sites. Do not over look the warnings
and instructions enclosed or those provided by other manufactures’ products. If you are not an experienced pilot and airplane modeler you
must use the help of an experienced pilot or an authorized flight instructor for the building and flying of this model aircraft.
These instructions are suggestions only on how to assemble this model. There are other ways and methods to do so. Twisted Hobbys has
no control over the final assembly, the materials and accessories used when assembling this kit, or the manner in which the assembled
model, installed radio gear and electronic parts are used and maintained. Thus, no liability is assumed or accepted for any damage
resulting from the use of the assembled model aircraft or from this instruction manual including but not limited to direct, indirect,
incidental, special, and consequential damages. By the act of using this user-assembled product, the user accepts all resulting liability. In
no event shall Twisted Hobbys’ liability exceed the original purchase price of the kit.
SHIPPING DAMAGE
Twisted Hobbys checks each plane before shipping to ensure that each kit is in fine condition. We have no bearing on the condition of any
component parts damaged by use, modification, or assembly of the model. Inspect the components of this kit upon receipt. If you find any
parts damaged or missing, contact Twisted Hobbys immediately. We will not accept the return or replacement of parts on which assembly
work has already begun. Twisted Hobbys reserves the right to change this warranty at anytime without notice.
OUR MISSION
To provide the best products and service to our customers at the lowest prices possible. We take great pride in
our company, our commitment to customer service and in the products we sell. Our online store is designed
to provide you with a safe and secure environment to browse our product catalog.
Thank you for shopping with Twisted Hobbys!

Rev: 2015.04.22.v03a page 4
kit contents
HARDWARE KIT DETAIL
Double check that you have all the
above pictured items. There are two
extra snap links included and the use
of the shrink tubing is optional. If any
of the airframe or hardware items are
missing, contact Twisted Hobbys
before starting your build
MAIN AIRFRAME COMPONENTS AND KITS
Double check that you have all the
above pictured items. The Carbon
Bundle includes tail push rods and
wing spars. Also pictured above is
the bag with all the small hardware
items, see the detail to the right for
items in should contain.

Rev: 2015.04.22.v03a page 5
TOOL AND ADHESIVES NEEDED
Tools shown and listed are suggestions only.
Depending on your building technique you may not
need everything indicated – and/or – you may find that
other tools available to yourself may be of benefit to
your Build.
It is also recommended that you have a flat building
surface, one that will accept stick pins and push pins.
An Acrostic Ceiling panel from your local hardware
store fits this bill nicely, and will lay flat on your work
table. Over size / long push pins are available at your
local craft store. These two items are by no means
required, but will aid in the building process, and can
be used for future projects
Lighter
Small Drill Bits
Tape Measure and Ruler
Black Sewing Thread
Welders Glue
Hobby Knife w/new Blade
Needle Nose Pliers
Wire Cutters
Low Temp Hot Glue Gun
Course Sand Paper
Scissors
Small Phillips Screw Driver
Thin and Medium CA
CA Applicator Tips
Activator

Rev: 2015.04.22.v03a page 6
the build
CONSTRUCTION METHODS:
Building surface should be at least 2ft x 4ft and at. Weights or some small heavy objects will be handy for holding things in place
during the time glue is setting.
Welders glue is used for FOAM TO FOAM joints. Thin and Medium CA are used on the PLASTIC TO FOAM and CARBON TO FOAM
joints. When using the Welders glue for a butt joint, apply a thin lm to each surface, allow to sit for approx ve minutes and
then assemble. Note that this method will create a nearly instant bond, so locate carefully when bringing the two pieces together. If
alignment is necessary or a slip joint, do not allow the glue to tack up, simple apply and join immediately, you will have several
minutes to locate the two parts before the glue sets up. In most cases the parts being glued can be handled with care in 30 minutes,
full cure is approx 24 hours.
Locate the hinged items as shown above, bend them back
onto each other as shown and let set for an hour or so. this
process will help to loosen up the movement of the control
surfaces, and is necessary to prevent servo damage
Gluing the snap links onto the ends of the control rods is
important to do at this time.... the glue will need to cure for
at least 24 hours in order to achieve it’s full strength.
Locate the rods and snap links as shown above

Rev: 2015.04.22.v03a page 7
A quick link will be glued to the end of
the 4 control rods. Hold the rod with
your ngers....
.... dunk it approx 1/2” into the nozzle
of the Welders tube as shown and twist
a time or two
Pull the rod out and check that you
have a nice, even coat of glue as shown,
if not, repeat the process
Multiple power combos are available
through Twisted Hobbys. Each will
operate the model per recommended
spec’s, different components vary and
are shown in the manual.
Multiple power combos are available
through Twisted Hobbys. Each will
operate the model per recommended
spec’s, different components vary and
are shown in the manual.
Attach a snap link as shown. Notice
that the snap link has a “saddled” area,
this should be where you rest the
control rod, repeat for the other rods
and set aside to dry for 24 hours

Rev: 2015.04.22.v03a page 8
Read all the warnings and misc
included instructions from the various
electronic items
Create a model prole in your radio and
bind the receiver per the manufactures
instructions
Hook up all the items as shown and
center the servos with sub-trims so that
the arms are 90 degrees to the servo
case. Ice Power Combo shown above.
See back of manual for servo horn
options.
Locate the airframe components
pictured above
Notice that the tabs are of different
conguration to aid in proper assembly.
Coat each of the mating surfaces with a
thin coat of Welders and let tack up for
approx. 5 minutes
The elevator is also keyed to help with
proper orientation during assembly, as
with the wings, coat the mating
surfaces with a thin coat of Welders
and set aside to tack up

Rev: 2015.04.22.v03a page 9
Locate the Side Force Generator Tree
and free all the parts from each other
While waiting for the Welders to tack
up, clean out the small scrap from the
cut out near the end of the wing as
shown
Once free from one another, remove all
the little tabs so that the edges are
smooth
In the center of the rear of each SFG,
split the foam as shown
This slit will be used later to install the
SFG onto the wing... repeat this with
the other three pieces
By now the Welders should be tacked
up. Carefully bring the pieces together
making sure that alignment is
maintained. With the tack up method,
you have to get it right the rst time.

Rev: 2015.04.22.v03a page 10
Installing the main spar is next, locate
the wood spar as shown above.
Repeat the previous process as
mentioned to the fuselage and elevator
connection.
Notice that there are some webbed
areas that will need to be removed prior
to installing the main spar
With a straight edge and sharp hobby
knife remove the webbed areas as
required
When complete, you should have a nice
consistent slot in which to install the
main spar
Test t the spar. It is not likely that any
additional trimming will be necessary,
but it is good to know how it will t
prior to adding glue

Rev: 2015.04.22.v03a page 11
If everything is correct, the spar should
t tight from wing tip to wing tip...
.... and be ush or slightly below ush
with the upper and lower surfaces of
the wing
Once satised with the t of the spar,
remove it and lay down a nice bead of
Welders
Squeeze the spar area together as
shown, do this several times along the
length of the spar to ensure a good sold
glue joint. Wipe away any extra glue
with a paper towel
Spread the area of the wing that
receives the spar wide enough to get the
spar in with out scraping too much of
the glue off during the process
Bead of Welders should look something
like what is pictured above... repeat for
the other side of the spar

Rev: 2015.04.22.v03a page 12
Use some weights to hold everything in
position while the glue dries. You
should let this sit for an hour or two,
and then handle carefully.
While the spar is drying, put a skim
coat of Welders on the black canopy
and mating fuselage part, let the glue
tack up
Once the glue has tacked, bring the two
pieces together as shown.
Make sure that there is no interference
with where the servos t.
Test t the lower fuselage section.Install the aileron and elevator servos
as shown. NOTE - DO NOT GLUE
THEM IN AT THIS TIME. ALSO SERVO
ARMS CAN BE INSTALLED NOW, JUST
MAKE SURE THEY ARE CENTERED

Rev: 2015.04.22.v03a page 13
Lay down a medium bead of Welder’s
along the mating surface of the
horizontal section of the fuselage, avoid
the servo areas and make sure to put a
little in the appropriate tab slots
Assembly the two pieces while the glue
is fresh and wet
Push all along the length of the lower
fuselage piece to make sure all the tabs
and slots are fulling engaged. Do this a
couple time over a couple minutes, this
will help ensure a good glue joint
While the fuselage is drying, locate the
aileron horns and remove them from
the plastic tree, they are the ones with
the larger holes.
Sight down the length from the nose of
the aircraft to veriify that there are no
waves in the vertical sections. let this
dry for about an hour
Use a small builder square or other
item to check that your airframe is
going together nice and square

Rev: 2015.04.22.v03a page 14
There is a pre-cut slot located approx
where shown. It will need to be cut all
the way thru to accommodate the
aileron horn properly
Test t the horn Make sure the hole of the horn is
directly above the hinge line of the
control surface
Apply a thin coat of Welder’s to the area
of the horn that gets buried in the wing
With the tip of the Welder’s tube, force
some glue into the slot
The horn should also be full seated into
the slot so that the back area is ush
with the surface of the wing

Rev: 2015.04.22.v03a page 15
Install into the slot, wipe away any
extra glue and repeat for the other side
Once the glue of the partially
assembled airframe has set up enough
to handle, install the rudder servo.
NOTE - DO NOT GLUE THE SERVO AT
THIS TIME
Make sure that the servo sits nice a
ush in the provided hole
Check the areas around the servos,
they should not interfere with the
fuselage sections meeting up nice a
ush
Test t the upper fuselage section and
make sure that all tabs and slots are
able to fully engage
For ease of wiring later make sure all
the servo wires are on the same side of
the fuselage

Rev: 2015.04.22.v03a page 16
Lay down a medium bead of Welder’s
like you did when attaching the lower
fuselage section. Making sure to get all
the tabs and slots and AVOID THE
SERVO AREAS
Bring the two pieces together while the
glue is fresh and wet, press along the
length a couple time over a few minutes
to make sure everything is fully
engaged
The nose pieces should be ush with
one another
Locate the rudder as shown above and
apply a medium skim coat to both of
the mating surface and allow the glue
to tack up
Airframe assembly as shown should be
dry before moving on to the next steps.
During this process also check for
squareness all along the upper fuselage
section

Rev: 2015.04.22.v03a page 17
2.00"
Once the glue has tacked up, assemble
the two pieces. Use the slot on the
rudder to line up with the n on the
fuselage
Next up are the fuselage trusses. To
install these, apply a medium bead of
Welder’s to the beveled areas. Do one
at a time, keep an area of one free of
glue as shown two steps down
Do the truss for the electronics side
next, keep the area shown free of glue
for now, this will help to provide an
area to tuck the wires into later on.
Apply Welder’s to the mating surface of
the aircraft and allow to tack up.
Locate the motor mount, rough up one
side with sand paper or the edge of a
le and apply an even medium coat of
Welder’s to the roughed up side.
While the glue is fresh and wet, bring
the pieces together. Apply a little
pressure along the glue joint a couple
times to ensure a solid bond. Repeat for
the other side.

Rev: 2015.04.22.v03a page 18
While the Motor mount is tacking up,
locate the remaining plastic hardware
pieces shown.
There should be two equal size horns,
one for the elevator and one for the
rudder, along with 10 push rod guides
By now the glue for the motor mount
should be tacked up, locate as shown
above...
With the tip of the Welder’s nozzle, force
some glue into the slot
Install the tail surface horns, starting
with the elevator horn, locate the pre-
cut slot and with a sharp hobby knife
make the cut all the way through
.... bring the two pieces together and
rmly press together for a strong and
solid bond
While the glue is fresh and wet, bring
the pieces together, then immediately
remove and allow the glue to tack up.
This technique transfers glue to the
fuselage.

Rev: 2015.04.22.v03a page 19
Install the horn into the slot, should be
all the way thru and ush with both
surfaces.
When properly installed the hole of the
horn should be directly above the hinge
line ush with both the top and bottom
surfaces..... as well as....
Repeat the process for the rudder and
wipe away any extra glue, pay attention
to the rudder horn direction, should be
as shown in photo
Secure the horns with the retaining
screw, since the servos are not yet
glued in, you can move them slightly in
the direction needed to reach the screw
with a screwdriver.
... the arms should be pointing forward
as pictured above. Repeat for the tail
servos. Rudder Horn pokes out the left
side of the fuselage and the elevator
horn thru the top of the right side.
It is now time to install the aileron
differential horn, you will need to t
assembly as shown. The EPP foam can
be bent easily in order to get the horn
in....

Rev: 2015.04.22.v03a page 20
Locate the Side Force Generators that
you worked on earlier
Spread as shown and test t each of
the four pieces
Apply a small bead of Welder’s to the
mating area on the wing
Next steps are optional, but will help to
reinforce weak areas and increase
durability. Four places around the
nose/motor mount and ten places at
the end of hinge lines and fuse stress
Before the glue dries, make sure the
SFG’s are square to the wing
Install the SFG and repeat for the other
three pieces