PDF User Manual

  1. Home
  2. Manuals
  3. Extreme Flight EXTRA 300 Instruction Manual

Extreme Flight EXTRA 300 Instruction Manual

Made by: Extreme Flight
Type: Instruction Manual
Category: Toy
Pages: 12
Size: 0.57 MB


Download PDF User Manual

Full Text Searchable PDF User Manual

background image


EXTRA 300 


Instruction Manual 






©Copyright 2006 EXTREME FLIGHT RC, Ltd.




background image




Thank you for your purchase of the Extreme Flight RC 45” Extra 300 Electric ARF.  This 
aircraft was designed to provide maximum performance and fun in a realistic looking, 
lightweight, fully aerobatic park flyer.  Using an inexpensive and efficient brushless 
outrunner motor and speed controller and a single high discharge 3S1P Lithium Polymer 
battery, the Extra 300 provides unlimited performance capability. 
Great care was taken to design a light weight yet robust airframe.  Expert engineering and 
modern laser cutting methods in conjunction with a carbon fiber wing tube and composite 
control horns keep weight to a minimum.  Unique features such as the ram air equipped 
motor box, 2 piece plug in wings, and magnetically retained canopy/hatch make for quick 
easy assembly and instantaneous access to the interior of the plane and battery tray.  The 
Extra 300 can truly be assembled in an evening-buy it one day, fly it the next! 
As with all Extreme Flight RC airplanes, the proof is in the flying!  Due to the close 
proximity of the wing and stab to the thrust line, the Extra 300 is a very neutral flying 
aircraft.  It flies precision aerobatics remarkably well and allows you to practice your 
IMAC sequence almost anywhere.  The slightly stretched fuselage makes for a plane that 
tracks like a pattern ship and the lightweight wings minimize over rotation in snaps.  On a 
calm day you’ll be amazed at how well this thing flies the sequences. 
If 3D is your thing then strap in!  The Extra 300 does it all with ease.  Beautiful, slow 
high alpha knife edge passes. FLAT spins both upright and inverted, rock solid elevators 
and harriers.  Tremendous aileron authority and insane roll rate from the massive 
ailerons.  The Extra does beautiful waterfalls and is capable of performing large round 
knife edge loops.  You won’t believe how much fun this thing is to fly! 
Sport flyers fear not!  Just because you’re not a 3D hot dogger or IMAC flyer doesn’t 
mean you can’t enjoy the Extra 300.  With reduced rates the Extra 300 is a very easy 
plane to fly.  Its super light wing loading allows it to land at a walk.  It will instill 
confidence and allow you to improve your flying skills.  When you’re ready for more 
advanced aerobatics, flip the dual rate switch and hang on! 
As with any high performance aerobatic aircraft, great care must be taken to avoid excess 
speed.  Excess speed will lead to control surface flutter and quite possibly the complete 
destruction of your aircraft.  Don’t let this happen to you!  Always have the motor at idle 
when the airplane is pointed down and reserve full throttle for vertical climbs.  Make sure 
you have adequate mechanical advantage in your control linkage set-up.  If you are 
unsure about this, have a more experienced flyer look over your set-up before flying.  
Extreme Flight RC, Ltd. in no way warranties its aircraft against flutter.  As with all of 
our planes, we put the Extra through a rigorous flight testing regime and have not 
experienced any control surface flutter. 
The Extra was designed around the Torque 2818T/900 Brushless Outrunner motor and 
Airboss 35 AMP ESC.  This is the best choice for powering the Extra, providing plenty 
of power for any maneuver imaginable.  Other outrunner motors in this class will work as 
well but may require slight modification to the motor mount. 
The Extra is very easy to assemble.  Take a few minutes to read this manual before 
beginning assembly to get familiar with the process. 

Let’s get started! 



background image


Wing assembly 



Locate a wing panel.  Check to see that all hinges are centered between the wing 
and aileron.  Hold the aileron fully deflected and apply a drop of thin CA to each 
hinge.  Flip the wing over and repeat.   




Use a #11 hobby blade to remove the covering over the servo bay.  Install the 
aileron servo using the manufacturer supplied mounting screws. Route the servo 
lead out of the root of the wing. 






background image



Locate the composite aileron control horn, aileron pushrod with z-bend and ez-
connector.  Remove the covering over the mounting hole for the control horn with 
your #11 blade.  Glue the control horn in place with medium CA.  Electronically 
center your servo and mount the ez-connector to the servo arm.  Place the z-bend 
in the aileron control horn and the other end of the wire into the hole in the ez-
connector.  Center the aileron and tighten the screw in the top of the ez-connector 
to retain the aileron pushrod wire.  See picture.  




Repeat for the other wing. 

That’s it!  You are done with the wings! 




background image

Fuselage Assembly 



Lets mount the landing gear first.  Locate the aluminum landing gear, (4) 3mm 
machine screws ( 2 long, 2 short), (4) wheel collars, the two wheel pants and 
wheels and the 2 small plywood squares.  Use medium CA to glue the plywood 
square to the inside of each wheel pant, centered in the wheel pant opening.  You 
may need to open the hole in the wheel pant slightly to allow plenty of clearance 
for the wheel.  Use a drum sanding wheel for this with your moto-tool. 




Locate the 2 longest 3mm screws and hex nuts.  These are the wheel axles.  Insert 
the screw through the pre-drilled hole in the landing gear and retain with the hex 
nut.  It would be a good idea to use a drop of blue loc-tite here.  Slide one of the 
wheel collars onto the axle, followed by the wheel, followed by another wheel 
collar.  Slide the wheel pant over this assembly before tightening the set screws in 
the wheel collars to make sure the wheel is positioned so that it fits in the opening 
in the pants.  When satisfied, tighten the setscrews in the wheel collars.  Position 
the wheel pants over the wheels (you will need to slot the wheel pant so that it 
will slide down over the axle, again quick work with a moto-tool and proper 
attachment).  Drill a small hole in the landing gear and into the ply square you 
glued into the wheel pants and use one of the small machine screws to secure.  
You may also want to put a drop of med CA between the wheel pant and 
aluminum gear.  The picture below will make this much clearer. 





background image




 3.  Apply a drop of loc-tite to each screw and insert it through the landing gear and     
into the pre-installed blind nut in the landing gear plate. 




background image


4.   Locate the motor box assembly and the 2 laser cut triangular motor box supports.  
Place the tabs in the motor mount assembly into the firewall and push down so that 
they lock into place.  Install the triangular supports as shown.  Wick thin and medium 
CA into all joints and allow to cure.  Locate the 2 clear plastic air scoops and glue 
them into place as shown. 





Use the manufacturer supplied mounting hardware and mount the motor and ESC 
as shown.  The hole for the prop shaft may need to be reamed slightly to clear the 
C-clip on the motor. 





background image





 Position the canopy/hatch in place and slide the cowl over the first former.  Use 
your spinner (a 2” spinner is the proper size) on the prop shaft to make sure the 
cowl is aligned properly.  View the cowl from the side and top view to insure it is 
positioned properly.  When satisfied, secure the cowl in place with a few pieces of 
masking tape.  Use a small drill bit to drill through the cowl and into the 4 
mounting tabs.  Secure the cowl with 4 small wood screws included in the 
hardware package.  

I highly recommend that you soak the cowl mounting tabs 

with thin CA before drilling.




Locate the horizontal stabilizer.  Viewing the bottom of the stabilizer, use a #11     
blade to remove the covering from the two notches at the leading edge of the 
stabilizer.  Also remove the covering from the slot for the horizontal stabilizer in 
the fuselage.  Slide the stabilizer into place and measure from several angles to 
insure that it is square to the fuselage and wing.  Sand or shim the slot as needed 
to insure proper alignment.  Use a fine felt tipped marker to make some reference 
marks and remove the stabilizer from the plane.  Use a hobby knife to remove the 
covering from the stab where it will attach to the fuselage to insure a wood to 
wood bond.  Be very careful not to score the wood which could potentially 
weaken the stabilizer.  DO NOT GLUE THE STABILIZER IN PLACE YET!!!!  
Locate the elevator halves and the carbon fiber joiner tube.  Place the elevator 
halves on a flat surface and tack glue the carbon tube in place.  Check the 
alignment, then mix up some 30 minute epoxy and form a fillet between the 
carbon tube and elevator halves.  This joint is crucial so take your time here.     






background image






After it is dry,  flip the elevator over so that the counterbalances are facing the 
rear of the plane.  Insert the elevator into the slot.  Once it is in position, insert the 
horizontal stab into place.  Re-check alignment and when satisfied, glue the 
stabilizer in place with CA or a small amount of epoxy.  Once this is dry, slide the 
elevator into position and glue the hinges in place with thin CA.  Be sure to leave 
enough space between the stab and elevator for maximum deflection.  Seal the 
hinge line on the bottom with Blenderm tape. (DO NOT OMIT THIS STEP!!!) 





Locate the vertical fin and rudder.  Remove the covering from the vertical fin 
where it will be glued into the fuselage.  Glue the vertical fin in place, making 
sure that the trailing edge of the fin is aligned with the rear of the fuselage. 



Locate the phenolic double rudder control horn.  Remove the covering from the 
slot near the bottom of the rudder and insert he control horn into the slot.  Glue in 
place with medium CA or epoxy.  Attach the tailwheel assembly as shown in the  





background image

 picture and secure with a small piece of strapping tape.  Slide the rudder into       
position and glue the hinges in place with thin CA. 





 Locate the elevator control horn and glue in place with medium CA or epoxy.  
Use a #11 blade to remove the covering from the elevator servo slot and install 
the servo using the manufacturer supplied mounting hardware.  Place an ez-
connector on the servo arm.  Locate the elevator pushrod and insert the z-bend 
into the phenolic control horn and the other end into the ez connector.  
Electronically center the servo and then tighten the screw in the ez connector to 
clamp down on the pushrod, while making sure the elevator is in the neutral 
position.  You may need to put a small bend in the pushrod. Pictured is the Hitec 
HS-55 sub-micro servo, however we strongly recommend using a stronger servo 
if you intend to set-up the Extra for 3D flying.  We have had great success with 
the Hitec HS-56 and the JR 281. 







background image



 Mount the rudder servo as shown inside the fuselage.  We highly recommend 
using a more powerful servo for the rudder such as the Hitec HS-56, HS-65 or JR 
281 to prevent control surface blow back.  Use the supplied hardware to assemble 
the pull-pull cable system.  At the rudder control horn end, the cable will be 
threaded through the control horn and secured with a small aluminum tube which 
is crimped around the cable.  At the servo end, the cable is threaded through the 
hole in the connector as shown and then inserted into the ez connector.  Center the 
servo electronically and make sure the rudder is in the neutral position.  Tighten 
the screw in the ez connector.  Make sure the cables are taut, but not overly tight, 
which may cause the servo to bind.   









background image



Install the receiver as shown using Velcro.  Use Velcro to secure the battery to 
the battery tray and use a Velcro strap around the battery. 





Use the supplied nylon bolts to secure the wings to the fuselage. 

This concludes the assembly of the Extra 300. 
Radio Set-up and flight tips. 

CG range for the Extra is from 3.50”- 4.00” from the leading edge of the wing 
measured at the wing root.  CG should be easy to achieve by moving the battery 
along the length of the battery tray.  Adjust to fit your flying style. 
Control surface recommendations are as follows: 
Elevator- 10 degrees low rates, 45+ degrees high rates. 
Rudder- 20 degrees low rates,  45+ degrees high rates. 
Aileron- 20 degrees low rates, 45+ degrees high rates. 
Use exponential function to achieve the best “feel” for your particular flying style.  I 
highly recommend that you take the time to set up rates for precision flying and 
separate rates for 3D.  The Extra is capable of flying very precise maneuvers, and 
proper rates and CG will allow you to experience this to the fullest extent.  Trying to 
fly precision aerobatics with 3D rates is an exercise in futility.  Spend some time 
dialing in and trimming your plane and you will be rewarded with a great flying 
Thanks again for your business! 
See you at the flying field!