Extreme Flight RC 61 Extra 330 LT User manual

Assembly Manual / Airframe – 61” Extra 330 LT
Thank you for purchasing this 3DHobbyShop by Extreme Flight ARF RC aircraft If you have
any issues, questions, concerns or problems during assembly, please contact our tech
department at: [email protected] or 770-887-1794 10am-5pm Eastern Monday thru
Friday
SAFETY in Assembly
During assembly of this aircraft, you will be asked to use sharp knives and hobby adhesives
Please follow all safety procedures recommended by the manufacturers of the products you use,
and always follow these important guidelines:
ALWAYS protect your eyes when working with adhesives, knives, or tools, especially power
tools Safety glasses are the best way to protect your eyes
ALWAYS protect your body, especially your hands and fingers when using adhesives, knives,
or tools, especially power tools Do not cut toward exposed skin with hobby knives Do not
place hobby knives on tables or benches where they can roll off or be knocked off
ALWAYS have a first-aid kit handy when working with adhesives, knives, or tools, especially
power tools ALWAYS keep hobby equipment and supplies out of the reach of children
SAFETY in Flying
This is NOT a toy! It is a very high-performance RC airplane capable of high speeds and
extreme maneuvers It should only be operated by a competent pilot in a safe area with proper
supervision
•ONLY fly your aircraft in a safe, open area, away from spectators and vehicles and
where it is legal to fly NEVER fly over an unsafe area, such as a road or street
•NEVER fly near overhead power or utility lines If your airplane ever becomes stuck in
a line or a tree DO NOT attempt to retrieve it yourself Contact the authorities for
assistance in retrieving your aircraft Power lines are DANGEROUS and falls from
ladders and trees CAN KILL!
•Never fly too close to yourself or spectators
•Spinning propellers are DANGEROUS!
Never run your motor inside a house or building with the propeller attached Remove the
prop for safety Always fly within your control
•Always follow manufacturers instructions for your radio system
•Always preform a pre-flight check of your aircraft to be certain of the aircraft's
airworthiness
• for more information
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Limits f Resp nsibility
Extreme Flight provides high-quality aircraft and components to it's
customers and end users. These aircraft and components are assembled
by the end user to produce a flying model. It is beyond Extreme Flight's
control to monitor the end user's completed aircraft. Therefore, Extreme
Flight in no ay accepts or assumes responsibility or liability for damages
resulting from the end user assembled product. The end user assumes all
responsibility and liability in use of Extreme Flight aircraft and components
and agreeing to hold harmless Extreme Flight, it's distributors and dealers.
Required Items
Hobby Knife
Small Phillips Screwdriver
Set Metric Allen Wrenches
Scissors
Small Pliers
Wire Cutters
Adjustable wrench
Masking tape
Drill and drill bits
Threadlocker (Blue Loctite)
Optional:
Heat gun and covering iron
Dremel tool
Assembly Instructi ns – Read c mpletely bef re starting assembly!
UNPACK :
Unpack your airplane and examine the components Check for damage of any kind If you have
damage, please contact Extreme Flight to discuss Contact info listed above
WRINKLES :
Your airplane was packed in plastic at the factory without any wrinkles in the covering You may
notice some wrinkles now; more likely, you will notice a few in a day or two or the first time you take
the plane out to the flying field These wrinkles are the result of wood shrinkage and/or expansion
Balsa wood changes size and shape slightly as it is exposed to varying humidity in the air This is a
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natural property of balsa wood As your airplane adjusts to the weather in your part of the world,
wrinkles may appear and disappear Wrinkles may be removed with the gentle application of heat to
the covering material on your airplane The best tools to use are a heat gun and covering iron Apply
the heat gently: the covering material will shrink as you apply the heat, and this will remove the
wrinkles BE CAREFUL! Too much heat applied too quickly can damage the covering, either by
causing it to pull away from the wood at seams and corners or even by melting it The covering will
shrink at low temperature with patient application of heat Wrinkles in the covering DO NOT affect
flight performance If you must shrink on a color-seam, use the iron and go slowly and carefully to
avoid any pulling or lifting at the seam
Remove the canopy before attempting to use heat on your covering! The canopy is made of thermo-
activated plastic and WILL deform with the application of heat Do not apply heat to the canopy
PAINT:
If you need to clean your airplane, we recommend using a damp towel The paint used on the canopy
and cowl is not safe for all cleaners In particular, DO NOT use alcohol on these parts, it will remove
the paint
Let’s get started!
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61" Extra Hardware Apply threadlock to wheel collar set screw.
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Slide one wheel/axle assembly into a wheel pant, and install the wheel assembly on the
landing gear leg. Tighten the locknut as shown to secure the assembly onto the gear leg.
Repeat for other side. Install wood screw through drilled hole in gear leg into pant.
Install the wheels onto the axles and secure with the wheel collars, as shown.
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Attach the gear to the fuselage with
short 3mm screws, use loctite.
Install gear cover plate as shown, with
clear tape, thick CA or epoxy glue.
Remove covering over horizontal
stabilizer slot on both sides of fuselage
as shown. Remove covering over
elevator servo opening on LEFT side of
the fuselage as shown.
Builders tip: A hot knife or old soldering
iron tip make quick work of opening
covering.
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Remove covering over wing tube, wing bolt,
aileron servo extension and anti-rotation pin
hole as shown. Repeat for opposite side.
Insert horizontal stabilizer in slot. Install carbon wing tube in fuselage. Compare
horizontal stabilizer with the wing tube. Sand or shim slot so stabilizer is
parrallel with wing tube.
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Install the carbon wing spar tube into the fuselage (Note – never glue the carbon
wing spar tube to the airplane, it is designed to be removable). Install the wings
temporarily. Measure as shown in the illustration. Make sure this measurement is
the same on both sides.
Center the stabilizer side-to-side in the slot using a ruler.
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When stabilizer is centered and aligned, drip Thin CA glue onto the stab-to-fuselage joint top and
bottom. NOTE: We do not remove any covering form the horizontal stabilizer. This keeps the
stabilizer strong, and thin CA makes an excellent joint to covering material. If your stab joint is not
tight enough for thin CA glue, or if you have to trim the opening to align the stab, you can use
thick CA glue as well.
Elevator halves and hardware.
Open elevator control horn slot on
bottom LEFT elevator half as
shown. Test fit control horn and
elevator joiner. Sand these for
better glue adhesion.
Builders tip: test fit elevator halves to be sure
elevators parallel each other. If not, adjust
joiner slot so both halves lay flat on a table.
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Install both elevator halfs.
Make sure elevator is
centered and counter-
balances do not touch
horizontal stabilizer.
Apply two large drops of thin CA to
each hinge in ELEVATOR HALF
WITH JOINER. Make sure elevator
flexes 45º up and down.
Place a generous amount of medium or thick
CA into the joiner slot on the remaining elevator,
and slide the elevator into place on the
stabilizer. Make sure it is aligned and flexes
easily at least 45 degrees up and down. Glue
the hinges with thin CA as above.
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Install elevator control horn into elevator as shown using a generous amount of
medium or thick CA glue. Install elevator pushrod onto horn as shown after
installing the elevator servo with wood screws included with servo. Tighten the
ball-link to the elevator horn and servo arm using a 2mm bolt, washer, and
locknut. Here we use the longest single arm provided with the Hitec HS-5245
servo.
Locate rudder hardware. Open covering on both sides for rudder control horn.
Sand both sides of rudder control horn for better glue adhesion.
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Glue rudder control horn with medium or thick CA and center.
Install rudder using two generous drops of thin CA on each hinge
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Use threadlock on tailwheel assembly set screws.
Install tailwheel as shown using included
wood screws. Make certain tailwheel
and rudder flex freely.
Builders tip: Install wood screws
once then remove. Use thin CA
to harden screw holes. Let CA
cure and reinstall wood screws.
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The rudder pull-pull cables are assembled as shown in the above diagram.
Assemble the pull-pull wires onto the rudder horn as shown, double-looping the wire
through the brass crimp sleeve before crimping. Crimp the brass crimp sleeve tightly
with pliers and apply a drop of thin CA to the crimp. Be SURE to use medium or thick
CA to lock the 2mm nuts on the rudder control horn. Feed the wires into the fuselage
slots and forward to the front of the fuselage. Cross the wires once so they make an X
inside the fuselage.
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Mount the rudder servo and assemble the connectors onto the rudder servo arm as
shown. Note that the connectors must be free to rotate on the servo arm. We use CA
to lock the nut on the bottom of the connector for this reason.
Assemble the front ends of the pull-pull cables as shown, double looping the wire
through the crimp sleeve. NOTE: the pull-pull cables cross over once inside the
fuselage, forming an “X”. Adjust your pull-pull cables to be snug, with no sag, but not
too tight. “Banjo-string-tight” pull-pull cables only sap the power from your rudder servo
and cause poor handling. Just snug is all you need.
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Align the ailerons on the wing. Be sure the graphics line up. This is easiest working with the bottom up. Glue the aileron hinges with 2 drops each of thin CA. Flex aileron to achieve at least 30º travel up and down. Reapeat for other wing. Cut openings for aileron servo and control horn. Install aileron control horn with medium or thick CA. Be sure to sand the base of control horn as before. Repeat for other wing.Use attached string to route aileron servo extension through the wing.
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Mount the aileron servo with wood screws include with the servo. Assemble the aileron
pushrod as shown. Tighten the ball-link to the aileron control horn and servo arm using
a 2mm bolt, washer, and locknut. Repeat for other wing. Mount the wings to the
fuselage using the nylon thumbscrews.
Locate the two pre-drilled holes in the wingtip for the Side-Force-Generators (SFG). The SFG spacer may be used as a guide to locate the holes.
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Your Extra includes optional Side-Force-Generators (SFG’s) for the wingtips. Install them as shown with the spacers in-between the SFG and the wing. The wing tip is mounted outside of the SFG. It is a good idea to use thin CA glue to harden the screw holes in the wingtips, this will allow you to remove and insert the SFG screws many times.
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The firewall of the Extra is arranged to allow the widest possible selection of motors to fit. Extra space has been provided for long motors and long prop adaptors. For this reason, if your motor is compact, you will need to supply spacers to extend the motor forward as shown. Attach the motor using the included 4mms screws and blind nuts, using loctite. Mount your ESC to the side of the motor-mounting box. Use the X-mount for your motor to mark the firewall for drilling. Drill the 4 mounting holes.
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The cowl is mounted onto the fuselage with 4 wood screws. These screws go into
the small plywood squares on the front inside of the fuselage. Soak these squares in
thin CA glue to harden them before proceeding.
The following procedure is helpful to be sure the wood screws hit the plywood
squares.
First, make small holes into the plywood
squares through the covering, with the cowl
and canopy off. Tape small pieces of paper
over these holes, as shown, and mark the
hole locations on these pieces of paper.
Install motor and Electronic Speed Control as shown.
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