3D Hobby Shop Extra 330LT User manual

Assembly Manual / Airframe – 108” Extra 330LT
Thank you for purchasing this 3DHobbyShop ARF RC aircraft. If you have any issues,
uestions, concerns or problems during assembly, please contact our tech department
at: [email protected] or 717-814-5316 10am-4pm Eastern Monday thru
Thursday.
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 e uipment 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.
Always obtain proper insurance before flying. Alway fly model aircraft in
accordance with the Academy of Model Aeronautics (AMA) Safety Code.
Visit the AMA's website at .modelaircraft.org for more information.
Limits of Responsibility
3D Hobby Shop 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 3D
Hobby Shop's control to monitor the end user's completed aircraft.
Therefore 3D Hobby Shop in no way 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 3D Hobby Shop aircraft and components and
agreeing to hold harmless 3D Hobby Shop 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)
Polyurethane and/or 30min epoxy glue
Rubbing alcohol
Optional – Heat gun and covering iron
Dremel tool
Assembly Instructions – Read completely before starting assembly!
UNPACK :
Unpack your airplane and examine the components. Check for damage of any kind. If you have
damage, please contact 3DHobbyShop 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 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 uickly 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!

Using a soldering iron or hobby knife, remove covering from forward fuselage areas.
1. Front Anti-rotation pin
2. Wing Safety Pin
3. Wingtip( Factory Cut)
4. Aileron servo leads.
5. Wing bolt
6. Rear Anti-rotation pin

Next remove covering for the front stab carbon tube.
Remove tail wheel assembly set screws one at a time and re torque using blue loctite.

Install tail wheel assembly using 3x 4 40 bolts and washers. Use blue loctite on the bolts.

Contents of landing gear hardware bag.
The axles come pre drilled and the pin is included in the hardware bag. To get the proper
spacing you will need 1 collar and one washer on the inside of the axle and then one
washer on the outside of the axle as shown.

Take note of the washer and wheel collar as discussed above.
Remember to slide the landing gear cuffs on before attaching both wheel pants as well.
The screws holes should face towards the ground. The picture above shows the front of

the gear towards the left of the page. The thicker portion of the cuffs should be towards
the rear of the plane as shown above.
Insert wheel into wheel pant as shown here.
Now attach the assembled wheel and pant to the landing gear with the included #4 40
bolts and nylon lock nut.

Make sure the wheel is centered in the pant. If adjustment is needed, you can rearrange
the washers and collar to achieve it.

Next attach the landing gear to the plane with the included 4mm bolts, washers, and
nylon lock nuts.

Use the Phillips head 3mm screw to attack the cuffs to the landing gear. The cuffs can
also be used to hold the landing gear cover plate in place.
Using a 3 32 allen wrench, be sure to make the already installed #4 40 bolts are tight.

The 108” Extra has a long tunnel suitable for canisters or tuned pipes. We provide the
parts for a variety of setups. Vented covers are included for the tunnel which can be
installed if desired. If using stock mufflers, the covering over the tunnel can be left intact
if desired.
First, if desired, the entire tunnel can be blocked off with this blockoff plate. Install with
epoxy glue and wood screws.

Here are the included panels. There are various canister/pipe mounts included, drilling
template, throttle servo box, and covers for various places on the airframe.
Remove the covering over the vent holes on the cover plates as shown.

Install the cover plates over the canister/pipe tunnel as shown using wood screws. This
is a picture from the 104” Slick so the panels may look slightly different.

Your kit includes two different kinds of ball links. The top one is used in between the
phenolic control horns. The bottom one, with the integrated spacer, is used on the servo
arm end.
Pushrods on the 108” Extra are assembled in this way, with a ball link on each end of a
stainless steel link. Note that the links have left hand threads on one end and right hand
threads on the other. Look very carefully to determine left and right before screwing on
your links.

Because the links are opposite threaded on each end, you can use the included link
wrench in your kit to change the pushrod length after they are installed on the airplane.
The control horns on the 108” Extra are the double phenolic fiberglass style. The horns
for the elevators and ailerons are identical. The rudder horns are longer, double sided.

Elevator and Aileron horns are installed as follows:
Using sand paper or something similar, rough up the areas that will be glued as shown.

Locate the two slots and use a single control horn to make sure each of the two slots are
cleaned out. Doing so will make installing the fully assembled horn much easier.
Assemble the control horn as shown. Temporarily install in the control horn and cut out
around the base of it as shown. You can use tape to keep glue from getting on the