Extreme Flight 60 EXTRA 300 EXP Manual de usuario
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EXTRA 300 EXP
60 inch electric ARF assembly manual
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Greetings and congratulations on your purchase of the Extreme Flight RC 60 inch EXTRA
300 EXP ARF. Loosely based on our favorite variant of the Extra, the 2 seat 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 EXP does not belong to a full
scale Extra, but rather stands for Experimental Progressive. This name was chosen due to
the fact that the Extra 300 EXP incorporates several new forward thinking design and
aerodynamic concepts. Having spent several months in development, flight testing and
refinement, we are very excited about the end result of our quest.
The Extra 300 EXP 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 the 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 near the center of gravity, resulting in superior knife edge
performance.
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:
Blue/white/red color scheme: Midnight Blue, White, True Red
Red/white/black color scheme: True Red, White, Black
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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Box contents
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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 joints .
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 Windex or Rapid Tack 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.
*Please note: The Extra assembles in the exact same manner as the 60 inch Edge. As a
result some of the photos in this manual will be of the Edge if we determined they better
illustrated the assembly step.
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Items needed for completion
-Masking tape.
-Hobby knife with #11 blades.
-Razor saw.
-Hobby sealing iron.
-Thin and medium CA. We highly recommend Mercury M5T thin and M100XF medium
formulas as well as the Mercury glue tips.
-30 minute epoxy. The new Mercury Adhesives Epoxies have worked very well for us.
-Denatured alcohol.
-Paper towels.
-Blue Loctite.
-Electric drill with an assortment of small drill bits.
-Small flat head and Phillip's head screw drivers.
-Standard and needle nose pliers.
-Metric balldriver or allen key set.
-Sanding block and sandpaper.
-4 mini metal geared servos. All flight testing was performed with Hitec HS-5245MGs and
we strongly recommend the use of these high quality servos.
-Dubro Long Super Strength servo arm set. (Dubro part #670 for Futaba, #671 for JR and
#672 for Hitec).
-Torque 4016T/500 Brushless Outrunner or Hacker A50-14XS v2 Outrunner motor.
-Airboss Elite 80 Amp ESC.
-5S-6S 3300-5000 mah LiPo battery.
- 16x8 prop for 5S operation, 15x6 for 6S operation.
-2-24" extensions for the 2 rear servos and 2-6"extensions to go between the receiver and
the aileron servo leads.
-Adhesive backed Velcro and Velcro strap for battery retention.
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Let's begin!
1. Locate the 2 wing panels with ailerons as well as the 2 G10 aileron control horns and
base plates. Remove the covering over the slot for the aileron horn on the bottom of the
aileron with a sharp hobby blade. Make sure you are doing this on the bottom of the
aileron! Insert the horn into the base plate and into the slot in the aileron. Use a fine
tipped felt marker to trace the base plate.
2. Remove the control horn and scuff the portion that will be glued into the aileron with
sandpaper.
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3. Use a sharp hobby blade to remove the covering 1/16 of an inch inside the line you
traced around the control horn base.
4. Mix up a batch of 30 minute epoxy and apply liberally to the slot in the aileron and to
the scuffed portion of the control horn that will insert into the aileron. Install the aileron
horn and base plate onto the aileron and wipe away any excess epoxy with a paper towel
soaked in denatured alcohol.
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5. Remove the covering from the aileron servo location and make sure the hinges are
centered in their slots. Slide the aileron into position making sure the outer tip of the
aileron is flush with the wing tip. Apply a drop of CA at each hinge location on both the
top and bottom side of the wing. Use a fresh bottle of thin CA and a fine glue tip for best
results.
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6. Before installing the aileron servo take a minute and apply some CA to the servo tray
and the anti-rotation pins.
7. Use the screws provided by the servo manufacturer to secure the aileron servo in the
designated location.
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8. Locate the 2 threaded metal pushrods that are the same length and 4 ball links along
with 4-2mm screws, nuts and washers. Thread the ball links onto each end of the pushrods
and secure to the servo arm and control horn using the supplied hardware as shown in the
picture. Use the second longest set of servo arms included with the Dubro Long Super
Strength servo arm kit for the aileron linkages. (Dubro part #670 for Futaba, #671 for JR
and #672 for Hitec).
9. Repeat this process for the other wing half. When finished take a few minutes to go over
all of the seams in the covering with a sealing iron on a medium heat setting paying special
attention to stripe edges and ends. Clean the wing panels with a soft cloth and put them
away in their wing bags.
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