Twisted Hobbys Sbach 342 User manual

Rev: 2012.09.16.v001a 1
1.2m Sbach 342
By RC Factory
Specifications
Wing span – 48” / length – 48” / AUW 24oz
2 0 - 4 0w outrunner motor (70g – 100g)
30 - 4 amp ESC / 3s 1600 – 2 00mAh battery
4 ch radio / 4x Metal Gear 14g – 18g servos
11 x 4.7 – 12 x prop
USA Distributor
Twisted Hobbys
www.twistedhobbys.com

Rev: 2012.09.16.v001a 2
TABLE OF CONTENTS
Page
WARNING INFORMATION...................................................................................................................................................3
SHIPPING DAMAGE...............................................................................................................................................................3
OUR MISSION ..........................................................................................................................................................................3
SAFETY NOTES .......................................................................................................................................................................4
IMPORTANT: PRIOR TO ANY ASSEMBLY ..............................................................................................................4
KIT CONTENTS .......................................................................................................................................................................5
OPTIONAL PARTS..................................................................................................................................................................6
TOOLS & ADHESIVES NEEDED..........................................................................................................................................7
THE BUILD ...............................................................................................................................................................................8
MOTOR & ESC.......................................................................................................................................................................28
RECEIVER ..............................................................................................................................................................................28
CENTER OF GRAVITY ........................................................................................................................................................29
CONTROL THROWS ............................................................................................................................................................29
3D Flight ..........................................................................................................................................................................29
Sport.................................................................................................................................................................................29
PRE-FLIGHT & TESTING ...................................................................................................................................................30
PREFLIGHT CHECKS ...............................................................................................................................................................30
Motor................................................................................................................................................................................30
Flight Controls .................................................................................................................................................................30
Batteries ...........................................................................................................................................................................30
Radio ................................................................................................................................................................................30
Range Check.....................................................................................................................................................................30
FLIGHT TESTING ....................................................................................................................................................................30
STORAGE ...............................................................................................................................................................................30
NOTES & S/U SHEET ............................................................................................................................................................31

Rev: 2012.09.16.v001a 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
beginning to build this model. If you have any questions please contact us at the above indicated email address.
WARNING INFORMATION
WARNING INFORMATIONWARNING INFORMATION
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
SHIPPING DAMAGESHIPPING DAMAGE
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
OUR OUR
OUR MISSION
MISSIONMISSION
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!
Thank you for shopping with Twisted Hobbys!Thank you for shopping with Twisted Hobbys!
Thank you for shopping with Twisted Hobbys!

Rev: 2012.09.16.v001a 4
SAFETY NOTES
SAFETY NOTESSAFETY NOTES
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 ever 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: 2012.09.16.v001a 5
kit contents
kit contentskit contents
kit contents
some items shown are optional
R C F a c t o r y 1 . 2 m S b a c h
standard parts list: hardware packet:
1x - fuselage
1x - canopy
1x - backbone
1x – elevator and rudder
2x – side force generators
1x – each left & right wing w ailerons
1x – each left & right landing gear strut
2x – wheel pants
2x – fuselage stiffening truss
2x – 1x3x1000 fuselage carbon strip
2x – 1x5x1000 wing carbon strip
1x – elevator control rod support tube
1x – 1x5x245 elevator carbon strip
1x – 1x3x245 elevator carbon strip

Rev: 2012.09.16.v001a 6
OPTIONAL PARTS
OPTIONAL PARTSOPTIONAL PARTS
OPTIONAL PARTS
Power Combo Kit
(Matched by Twisted Hobbys)
includes:
1x
1x1x
1x – 78-100g 1000-1100kv Outrunner Motor
1x
1x1x
1x – ESC 45A Twisted Hobbys’ Series
4
44
4x
xx
x – Metal gear MG65 14g Servos
1x
1x1x
1x – thin electric prop 11x5.5 (similar to APC)
Micro
MicroMicro
Micro Receiver
Receiver Receiver
Receiver
Max Recommended Weight: 9.8g
Minimum of 4 channels required
Perfect choice for building and repairing your
Twisted Hobbys EPP planes! This is the only
adhesive you will ever need. Welder virtually bonds
anything to anything! Clear, heavy-duty, flexible
and water-proof when dry. Use indoors or out. (1) 1
oz tube
CA and Kicker
Various thickness CA glues and
Activator available from Twisted
Hobbys’
Carbon Fiber Extension Arm Kit
Carbon Fiber Extension Arm KitCarbon Fiber Extension Arm Kit
Carbon Fiber Extension Arm Kit
High-Strength Light Weight Rigid Carbon Fiber
Extension Arm Kit. Excellent tensile strength and
rigidity properties you can count on. Perfect choice
for maxiumzing control surfaces deflection with out
the added weight and looking good while doing so.
Easy to install, each horn matches perfectly with
Twisted Hobbys and TowerPro servo arms.
Note: many of these “optional parts” shown or
similar items, may be available from the
Twisted Hobbys’ web store.

Rev: 2012.09.16.v001a 7
Tools
Tools Tools
Tools &
&&
& Adhesi es Needed
Adhesi es Needed Adhesi es Needed
Adhesi es Needed
•Tape Measure and
Tape Measure and Tape Measure and
Tape Measure and Ruler
RulerRuler
Ruler
•Lighter
LighterLighter
Lighter
•Small drill bits
Small drill bitsSmall drill bits
Small drill bits
•Welders Glue
Welders GlueWelders Glue
Welders Glue
•Hobby Knife w new Blad
Hobby Knife w new BladHobby Knife w new Blad
Hobby Knife w new Blade
ee
e
•Needle Nose Pliers
Needle Nose PliersNeedle Nose Pliers
Needle Nose Pliers
•Wire Cutters
Wire CuttersWire Cutters
Wire Cutters
•Low Temp Hot Glue Gun
Low Temp Hot Glue GunLow Temp Hot Glue Gun
Low Temp Hot Glue Gun
•Course Sand Paper
Course Sand PaperCourse Sand Paper
Course Sand Paper
•Scissors
ScissorsScissors
Scissors
•S
SS
Small Phillips Screw Driver
mall Phillips Screw Drivermall Phillips Screw Driver
mall Phillips Screw Driver
•CA
CACA
CA and Activator
and Activator and Activator
and Activator

Rev: 2012.09.16.v001a 8
THE BUILD
THE BUILDTHE BUILD
THE BUILD
CONSTRUCTION METHODS:
Building surface should be at least 2ft x 4ft and flat. Weights or some small heavy objects will be
handy for holding things in place during the time glue is setting.
Three types of glue are used for the build, Welders glue is use for most areas, Hot Glue for the
electronics and CA in the construction of the control rods and stiffners. When using the Welders
When using the Welders When using the Welders
When using the Welders
glue, apply
glue, apply glue, apply
glue, apply a thin film to each surface
a thin film to each surfacea thin film to each surface
a thin film to each surface, allow to sit for approx
, allow to sit for approx , allow to sit for approx
, allow to sit for approx five
fivefive
five minute
minute minute
minutes
ss
s and then assemble
and then assemble and then assemble
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 while gluing the two pieces together, 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.
Any Carbon to Foam parts should be gluded with CA. Carbon parts should be sanded and wiped
clean prior to gluing. Welders is best for Foam to Foam joints.
STEP
STEP STEP
STEP –
––
– A
A A
A –
––
–
Locate the fuselage and the two carbon
strips that are 3x1x1000. Lightly sand
and wipe clean.
STEP
STEP STEP
STEP –
––
– B
B B
B –
––
–
Insert the strips into the pre-cut slots.
Make sure they are flush with the outer
surface and extend a little beyond the
nose and tail sections of the fuselage.
Once satisfied with the location and fit,
and while the carbon is in position apply
CA to the area so that it wicks in and
bonds the fuselage to the carbon strip.
Use Activator if necessary.

Rev: 2012.09.16.v001a 9
STEP
STEP STEP
STEP –
––
– C
CC
C –
––
–
Locate the wing the wing halves and
the fuseslage backbone. Note that
there are little tabs that help to
position the wing halves correctly.
You should be looking at the bottom
of the wings, and the cutout for the
elevator should be facing down, this
this this
this
orientation is paramount
orientation is paramountorientation is paramount
orientation is paramount, double
check to make sure you have the
items located properly.
Make a reference mark as shown at
the center of the inside root of the
wing. This in conjunction with the
tip of the leading edge will be used to
line up with the carbon strip in the
fuselage backbone to aid in aligning
the two pieces for 0 degrees of
incidence.
Mark with tape or a marker the area
of the fuselage backbone that will
come into contact with the wing
roots. Also at this time check that
when fully seated against each other
that the wing halves are located
symetrical in relationship to the
fuselage backbone.

Rev: 2012.09.16.v001a 10
STEP
STEP STEP
STEP –
––
– C
C C
C –
––
– (con’t)
Apply welder glue to the wing root
and mating area of the fuselage
backbone. Spread the bead of glue to
create a nice even coat. Use and old
credit card or business card to
prevent your fingers from becoming
full of glue. Let the parts stand for
approx 5 to 10 minutes to allow the
glue to tack up.
Carefully bring the parts together,
making sure that the center of the
wing lines up with the center of the
fuselage backbone. Use the carbon
strip in the backbone and the marks
you made on the wing for reference.
This is very important for a true
flying aircraft.
STEP
STEP STEP
STEP –
––
– D
DD
D –
––
–
Locate the 1x5x1000 carbon strips,
sand with medium grit sand paper
and wipe clean. Cut a slit in the
wing deep enough to accommodate
the carbon strip, perpendicular to the
fuselage backbone and approx
100mm back from the wing’s leading
edge where it meets the fuselage back
bone. Note you should consider at
this time where you want to locate
your aileron servos so that the spar
does note interfere.

Rev: 2012.09.16.v001a 11
STEP
STEP STEP
STEP –
––
– D
DD
D –
––
– (con’t)
Press the spar into the slit you just
cut insuring that is fully contained.
Make sure the wing is perfectly flat
on the workbench by slightly pressing
down on everything. Apply thin CA
over the carbon strips, using enough
so that it wicks in. Apply Accelerator
if necessary
Repeat the process for the top side
carbon spar.
STEP
STEP STEP
STEP –
––
– E
EE
E –
––
–
Locate the Elevator and the carbon
stips use for stiffening. There should
be one piece of 1x3x245, one piece of
1x5x245 and two pieces of 1x3x100.
Sand them with medium sand paper
and wipe clean

Rev: 2012.09.16.v001a 12
STEP
STEP STEP
STEP –
––
– E
E E
E –
––
– (con’t)
From the underside of the Elevator
install the 1x5x245 strip into the
precut slot of the fixed part of the
elevator so the spar will be flush with
the surface. Repeat with the 1x3x245
spar on the moveable part of the
Elevator. Make sure the Elevator is
flat and apply CA to spars, letting it
wick into and around the spars and
the groove that it is in. Hit with
Accelerator.
Flip the Elevator over to the top side
and install the 1x3x100 strips as
above, into their respective pre-cut
slots.
STEP
STEP STEP
STEP –
––
– F
FF
F –
––
–
Locate the Fuselage and Canopy
parts, lay down a bead of Welders
onto both mating surfaces, spread
thin and allow to tack up.

Rev: 2012.09.16.v001a 13
STEP
STEP STEP
STEP –
––
– F
FF
F – (con’t)
Once the Welders has tacked up, lay
both pieces on a piece of either wax or
parchment paper, and slide the two
pieces together. Use the extreme front
and rear of the Canopy corners as a
guide to line up with the corners of
the cut outs in the Fuselage.
Use a sharp hobby knife to separate
the Fuselage upper and lower parts,
cutting through the center of the
tabs.
STEP
STEP STEP
STEP –
––
– G
GG
G –
Position the airframe belly side up.
Locate the Landing Gear Plate the
ane Stirrups. Notice that there are
two pre-exsiting holes for the legs of
the Sturrups (in the area of the red
arrows). With a straight edge and
sharp hobby knife, create a cut
between them as indicated by the red
lines to the left, these will allow the
Stirrups to set flush when gluing.

Rev: 2012.09.16.v001a 14
STEP
STEP STEP
STEP –
––
– G
GG
G – (con’t)
Notice that the Stirrups are keyed to
the plate and all three parts should
fit nicely into the exisitng holes and
slot you just made. Also notice that
the slot in the Stirrup should be
toward the rear of the plane. Slot in
the Stirrup may need to be enlarged
to allow passage of the LG Strut,
once satisfied with the fit, make a
mental note of all the areas that will
be glued, roughen them up with
medium grit sand paper and wipe
clean.
Glue the LG Plate and Stirrups to
the bottom of the airframe as shown.
It is important for this assembly to
have a minimal amount of slop. In
order to get the proper depth of the
Strirrups, use the LG and some
clamps to hold everything accurately
in place while the glue dries. The LG
needs to be removeble, so make sure
that there is no glue that squishes out
and creates a bond to the LG Plate or
Stirrups. Do not over tighten the
clamps.

Rev: 2012.09.16.v001a 15
STEP
STEP STEP
STEP –
––
– H
HH
H –
Locate the lower part of the Fuselage
and test fit into the slots of the belly
side of the backbone.
Apply a thin layer of Welders to the
contact areas of both pieces, and
smooth to a thin layer and allow to
tack up. Do not put any glue on the
sides of the tabs at this time, as those
areas will need to “slide” together,
glue will be added to this area just
before assembling the lower Fuselage
to the Backbone.
Once the glue on flat surfaces has
tacked up, apply Welders to the sides
of the tabs and assembly. Check for
squareness and tweek from side to
side if necessary.

Rev: 2012.09.16.v001a 16
STEP
STEP STEP
STEP –
––
– H
HH
H – (con’t)
With the belly of the plane facing up,
test fit the Elevator. Check with a
tape measure that when all butted up
flush that the tips of the Elevator
from both sides are the same distance
to the wing tips. Also, if you have not
already done so, now is a good time
to trim off and sand smooth the ends
of the carbon strips that were glued
into the Backbone.
Apply Welders to the contact areas,
spread smooth and allow to tack up.
Carefully attach the Elevator so that
it is square and true, apply a little
weight and allow the glue a little time
to fully set up.

Rev: 2012.09.16.v001a 17
STEP
STEP STEP
STEP –
––
– H
HH
H – (con’t)
Locate the Anti-Torsional strips. For
a more streamlined look you can trim
and bevel one end of each strip as
shown.
Tack gluing method will be used to
attach the Strips, but in order to get
the glue in the right spots, do the
followning; Lay down a medium bead
of Welders on the beveled area of the
Strip. Carefully and Gently lower the
Strip into position, trying to get the
exact postion, allowing both parts to
come into contact with each other,
thus transfering some of the glue to
the Fuselage. Separate the two, and
allow the glue to tack up. No glue
near the nose of the plane will allow
you to hide some wires when
installing the radio gear.
Strips should form a 45 degree angle
between the Backbone and lower
Fuselage. Confirm at this time that
every thing is square.

Rev: 2012.09.16.v001a 18
STEP
STEP STEP
STEP –
––
– I
II
I –
Drill a 3mm hole in the end of each
Landing Gear Strut for the wheel
axle. Also enlarge the hole in the
wheel.
STEP
STEP STEP
STEP –
––
– J
JJ
J –
Assemble in the following order - the
M3x15 landing gear shaft, wheel, M3
nut, flat washer, wheel pan tab,
landing gear strut, washer and M3
Acron nut. Tighten up the nuts as
required in such a way that the wheel
still spins freely. Hold the screw and
tighten the nut to avoid the whole
assembly from tighening up and
preventing the wheel from spinning
Locate and glue the Wheel Pants to
the Wheel pan tabs. The included
2.9x6mm wood screws are used to
attach the strut assemblies to the
Fuselage. Landing Gear can be
installed or removed easily by simply
loosening and or tightening. MAKE
SURE WHEN GLUING ON THE
WHEEL PANTS THAT YOU
MAKE A LEFT AND RIGHT
ASSEMBLY.

Rev: 2012.09.16.v001a 19
RADIO GEAR
RADIO GEARRADIO GEAR
RADIO GEAR
In the next step you will start
installing the radio gear, it is
strongly suggested that before doing
so that all the electronics are hooked
up and tested. Start with a fresh
Model Program on your Transmitter
if appropriate, make sure all the
trims and sub trims are zero, and
that all the travels are `100%. Mark
the servos with their assigned
channel and note their neutral
positions. Program the ESC per
MFG if necessary.
STEP
STEP STEP
STEP –
––
– K
KK
K –
Install the Aileron Servos. They can
be installed flat or upright. Locate
them close enough to the Fuselage so
that the wires will reach the Receiver
location. Use caution to not locate
the Servo in such a position that it
interfers with the Wing Spars. Use
shown dimensions for location
reference.
Mark and remove the necessary foam
needed to mount the servo. Make the
recess slightly smaller than the Servo
so that it is a snug fit, but is still
allowed to sit flush. Standing the
servo up is an option if wanted.

Rev: 2012.09.16.v001a 20
STEP
STEP STEP
STEP –
––
– K
KK
K – (con’t)
Locate the Aileron Control Horn so
that it lines up with the Servo horn
and forms a 90 degree angle when
compared to the hinge line as shown
to the left. Locate the horn, from
front to back, by matching up the
profile of the receesed part of the
horn with the profile of the relief cut
in the wing for the hinge.
Locate the ball links, associated ball
link hardware and screws. In order to
get a satisfactory amount of aileron
throw, you will need to have a servo
arm that is approx 1” long from the
center to where the link attaches. If
your servo horn is not that long there
is an OPTIONAL part avaible from
Twisted Hobbys made specifically for
the servos in the power sets. Center
the Servo and the Aileron. Aileron
center will be when the trailing edge
lines up with the carbon strip in the
backbone.
Attach the horn in such a way that it
forms a 90 deg angle with the control
rod as shown to the left. With the
Servo and Aileron at their neutral
positions, attach the ball links with
the included hardware, and cut the
rods to the required length. Sand the
ends of the rod so that they will slide
freely into the links, wipe clean,
apply a drop of thin CA and
assemble. The closer to the right
length the better, small adjustments
can be made with subtrim if
necessary.
e
nlarge
screw hole
F
lange
side
Of threaded
ball