Extreme Flight EXTRA 300EXP v2 Bedienungsanleitung
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EXTRA 300EXP v2
Electric ARF
Copyright Extreme Flight 2020
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Greetings and congratulations on your purchase of the version 2 of the Extreme Flight RC
Extra 300EXP ARF
.
Loosely based on our favorite variant of the Extra, the mid-wing
Extra 300, we have taken numerous liberties with this design to produce an aircraft that is
both unique in appearance and flight ability. The designation 300EXP does not belong to
a full scale Extra, but stands for Experimental Progressive. This name was chosen due to
the fact that from its inception the Extra 300EXP was developed as a test bed for several
new forward thinking design and aerodynamic concepts. This new V2 version further
refines the original concept with additional use of composites resulting in a stiffer,
stronger airframe and a slight reduction in weight.
The Extra 300EXP incorporates carbon fiber and G10 composites into the structure of the
airframe, resulting in a lightweight, yet twist free structure capable of handling extreme
aerodynamic loads. Carbon and G10 are used in high stress areas such as motor box
support, landing gear mounting structure and fuselage longerons to provide enormous
strength and durability. A true piece of carbon fiber art, the landing gear is airfoiled and
has just enough "give" to cushion those not so perfect landings. The removable wing
panels are mounted on a carbon fiber wing tube and are fastened to the fuselage with
nylon thumbscrews. The large canopy (which is retained by a spring loaded hatch latch)
has been moved forward to place the tallest portion of the aircraft at the center of gravity,
resulting in the best knife edge performance of any aircraft we've flown to date. All
control surfaces are pushrod driven with short linkages and use ball links for slop free
actuation with no binding. Optional Side Force Generators are included and add to the
already generous side area, increasing yaw axis authority and adding stability in all angles
of sideslip. Expertly painted fiberglass cowl and wheel pants and 2 gorgeous high
visibility Ultracote color schemes add the finishing touches and make this an airplane that
you will be proud to show up at the flying field with. The combination of these unique
elements add up to an aircraft that pushes the boundaries of modern aerobatic flight.
If repairs become necessary, the Ultracote colors used on the Extra 300EXP are as
follows:
Yellow/Red/Blue/Silver color scheme: Cub Yellow. Midnight Blue, Silver, True Red
Orange/White/Blue color scheme: Orange, White, Midnight Blue, Sky Blue, Silver
Extreme Flight R/C reserves the right to alter the assembly process at any time. While we
do our best to update the manuals, sometimes there are minor changes in the process of
the build. If you have any questions regarding assembly please contact us before moving
forward.
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Tips for Success:
1. Before starting assembly, take a few minutes to read the entire instruction manual to
familiarize yourself with the assembly process.
2. Please take a few minutes and go over all the seams on the aircraft with a covering iron
on a medium heat setting.
3. Use a fresh bottle of thin CA with a fine glue tip when attaching the CA hinges. This
will ensure that the proper amount of CA wicks into the hinge and surrounding balsa
wood and creates a proper bond between the wood and hinges. We are big fans of the
Mercury line of adhesives as well as the glue tips provided by them.
4. Apply a couple drops of CA to high stress areas such as anti-rotation pins, landing gear
mounts, servo trays and motor box support mounts.
5. All of the G10 control horns are the same with the exception of the elevator horn. Its
base has been shortened to fit the depth of the elevator.
6. When applying decals, first clean the area where the decal will be applied with alcohol.
Mist the area lightly with Rapid Tac or Windex before applying the decal which will allow
you to properly position it, then use a rubber squeegee to push all of the liquid from under
the decal. This will result in very few air pockets trapped under the decal.
7. Take the time to properly balance and trim your aircraft and set up rates and
exponential values. Your flying experience will be greatly enhanced by doing this.
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Items needed for completion
-masking tape
-Thin and medium CA. We highly recommend Mercury M5T thin and M100XF medium
formulas as well as the Mercury glue tips.
-Blue Loctite.
-Electric drill with an assortment of small drill bits.
-Small flat head and Phillips head screw drivers.
-Standard and needle nose pliers.
-Metric balldriver or allen key set.
-4 sub micro metal geared servos. All flight testing was performed with Hitec HS-70MG
-Torque 2814T/820 Brushless Outrunner motor.
-Airboss Elite 45 Amp ESC.
-4S 2100-2700 mah LiPo battery.
-Falcon or APC 12x6 E prop (NOT the slow fly version!).
-52mm Extreme Flight spinner.
-2 18" extensions for the 2 rear servos and 2 6" extensions to go between the receiver and
the aileron servo leads. We recommend the Extreme Flight 28 AWG servo extensions to
save weight.
-Adhesive backed Velcro and Velcro strap for battery retention.
Please note: The Extreme Flight 4 in 1 airplane stand is invaluable when assembling our
aircraft, from the 48" size models right up to our 50cc models. I can't imagine assembling
all of the aircraft I do without the aid of this inexpensive yet handy tool!
https://extremeflightrc.com/4-in-1-Airplane-Stand_p_1892.html
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1. Gather the components for the landing gear assembly.
2. Insert the threaded portion of the axle into the carbon fiber landing gear. Slide a
washer onto the axle followed by a nylon insert lock nut. Do not tighten yet.
3. Slide a wheel onto one of the axles and secure with a wheel collar. For best results file a
small flat spot on the axle for the wheel collar's set screw to seat against. Repeat the
process for the other wheel. Be sure to place a drop of blue thread lock on the setscrew.
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4. Slide the wheel pant into position. Tighten the nut on the axle so that the wheel pant is
pinched between the axle and the landing gear leg. The recessed area of the wheel pant
will align with the gear and prevent it from rotating. Repeat for the other wheel pant.
5. Mount the landing gear assembly to the fuselage using the provided 3mm socket head
cap bolts and washers. Make sure to apply a drop of blue thread lock compound to the
bolts.
6. Next lets assemble the Torque 2814/820 and install it and the ESC onto the fuselage.
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7. Secure the radial mount to the motor with the 4 supplied Phillips taper head screws.
8. Secure the prop adapter to the other side of the motor with the supplied socket head
cap bolts. Remember to use blue thread lock compound on all bolts!
9. Attach the motor to the front of the motor box with the supplied 3mm socket head cap
bolts.
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10. Mount the ESC to the bottom of the motor box with Velcro or a nylon cable tie. I like
to place a piece of shock absorbing foam under the ESC to protect the components from
vibration. Now is a good time to verify proper motor rotation direction. Plug the ESC
lead into the throttle port on your receiver and attach a battery to the ESC. Arm the
system (without a propeller attached) and verify direction. If the motor rotates in reverse
swap any two motor wires and verify rotation direction. Secure the motor wires using
nylon cable ties to prevent them from unplugging or getting chafed.
11. For quick, easy and accurate mounting of the cowl we recommend the following
method. Tear 4 short pieces of masking tape from a roll. Place each piece of tape on the
side of the fuselage so that each piece corresponds with one of the 4 cowl mounting tabs.
Use a fine tipped marker to mark the location of the center of each mounting tab. Roll the
tape back and slide the cowl into position. Install an Extreme Flight 52mm spinner onto
the motor shaft for reference and once satisfied with the cowl position roll the tape back
into place and secure the cowl. Use a 1/16" drill bit to drill a hole at the location of the dot
on each piece of tape. Remove the tape and secure the cowl with 4 of the included small
wood screws with integrated washers. Very simple!
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12. Locate the horizontal stabilizer/elevator assembly along with the elevator control horn. Verify the fit
of the control horn and make sure it does not protrude through the top of the surface. Trim if necessary.
Once satisfied scuff the portion of the horn that will be inserted into the elevator with sandpaper. Glue
the horn into position in the precut slot with medium CA.
13. Center the hinges in their slots and secure with a couple drops of fresh thin CA on each side of the
hinge. Strive for the smallest hinge gap possible.
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14. Insert the stab into the rear of the fuselage and push as far forward as possible. Slide the main wing
tube into its sleeve to check alignment with the stab. Measure side to side as well. When satisfied secure
the stab assembly to the fuselage with thin and medium CA.
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