AirWild Hobbies Almost-ready-to-fly 29% Extra 260 User manual

Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 2
Contact Us
AirWild Hobbies
23172 Alcalde Drive, Unit B
Laguna Hills, CA 92653
U. S. A.
[phone]
WWW.AIRWILDHOBBIES.COM
[email protected]
This product is sold with exclusion of all warranty expressed or implied, statutory or
otherwise. Buyer assumes all risks of use.
I
IN NT TE EN ND DE ED D U US SE E
The Extra 260 kit is precisely crafted to produce an airplane that is capable of winning at the
highest levels of precision aerobatic competition. It should only be flown by radio control pilots
experienced with this type of high performance, mid wing airplane at flying sites that comply
with the standards set by the Academy of Model Aeronautics or other nationally recognized
radio control sanctioned organizations.
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WA AR RR RA AN NT TY Y
AirWild will repair or replace individual parts, or all, of the kit for defects in material and / or
manufacturing for a period of thirty (30) days from invoicing. There are no exceptions.
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AB BO OU UT T T TH HI IS S A AS SS SE EM MB BL LY Y M MA AN NU UA AL L
This manual divides the assembly into several sub-assemblies; fuselage, stabilizer, wing,
rudder, landing gear, etc. Please read each section carefully and familiarize yourself with each
step before starting on the particular sub-assembly. Photos and illustrations are provided in
this manual to clarify and detail many sub-assembly steps. The two should be used together to
facilitate your assembling.
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AI IR RP PL LA AN NE E S SP PE EC CI IF FI IC CA AT TI IO ON NS S: :
Wing Span: 87 in. (2210 mm)
Fuse Length: 78 in. (1981 mm)
Wing Area: 1370.5 sq. in. (0.9 sq. m.)
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UL LT TR RA AC CO OT TE E S SP PE EC CI IF FI IC CA AT TI IO ON NS S: :
COLOR MANUFACTURER PART NUMBER DESCRIPTION
White Hanger 9 HANU870 White
Red Hanger 9 HANU866 True Red
Yellow Hanger 9 HANU1884 Cub Yellow
Silver Hanger 9 HANU881 Silver
Purple Hanger 9 HANU847 Pearl Purple

Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 3
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PA AC CK KI IN NG G L LI IS ST T: :
This list is provided for your convenience. Before starting on putting the airplane together, go
through your kit and verify that all parts are present and in good condition. Contact AirWild
Hobbies at [phone] for any discrepancies.
Item # ;Description Qty
1 Fuselage 1
2 Canopy Hatch 1
3 Canopy 1
4 Wing, Left 1
5 Wing, Right 1
6 Aileron, Left 1
7 Aileron, Right 1
8 Wing Tube, Aluminum, O.D. ∅25 MM x 790 MM 1
9 Stabilizer, Left 1
10 Stabilizer, Right 1
11 Stabilizer Tube, Aluminum, O.D. ∅10 MM x 320 MM 1
12 Elevator, Left 1
13 Elevator, Right 1
14 Rudder 1
15 Aluminum Main Landing Gear 1
16 Fiberglass Cowl 1
17 Fiberglass Wheel Pants 2
18 Socket Head Cap Screw, Stainless Steel, M4x20 6
19 Socket Head Cap Screw, Stainless Steel, M3x15 14
20 Blind Nut, Stainless Steel, M3 4
21 Flat Washer, Stainless Steel, M3 16
22 Flat Washer, Stainless Steel, M4 6
23 Pan Head Wood Screw, 3MMx15MM 2
24 EFP Control Horn 10
25 Tail Wheel Bracket 1
26 CA Hinge 21
27 Assembly Manual 1

Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 4
To some of you setting up an airplane of this size may be a first-time experience and can be
confusing. So we thought to provide you a list of items that we personally used to complete our
own prototype airplanes. Hopefully this may serve as a starting point in your quest for the
perfect setup.
Suggested Component List
Functional
Group Description Qty. Mfgr. Mfg. P/N
Wheel Axles, 5/32''x2'" (2/Pk) 1 DuBro DUB248
Wheel Collars, 5/32" (4/Pk) 1 DuBro DUB140
SkyLite Main Wheel, 3" (2/Pk) 1 Sullivan SUL877
Tail Wheel, 1” 1 DuBro DUB100TW
Landing Gear
&
Tail Wheel
Wheel Collars, 3/32” (4/Pk) 1 DuBro DUB138
EFP Control Horn 2 AirWild AW61-112-02
MLP Aluminum Servo Arm, 3” 1 AirWild
Cable Attach Fitting (4/Pk) 1 AirWild AW60-090-01
Pull-Pull Cable, 60 lbs. 1 AirWild 60WNA
4-40 Safety Lock Kwik-Link (2/Pk) 1 DuBro DUB817
Ball Link, 1/4 HD Ball (2/Pk) 1 DuBro DUB899
Rudder
High-Torque Digital Metal Gear Servo, 150 oz.
In. (recommended) 1
EFP Control Horn 4 AirWild AW61-112-02
MLP Aluminum Servo Arms, Half, 1.25" 2 AirWild
Ball Link, 1/4 HD Ball (2/Pk) 2 DuBro DUB899
#4-40 Threaded-End Carbon Fiber Push Rod 2 AirWild AW60-200-01
Twist'd Servo Extensions, 18” 2 AirWild AW80-064-01
Elevators
High-Torque Digital Metal Gear Servo, 120 oz.
In. (recommended) 2
Titanium Pro-Link, 1.5" (2/Pk) 1 Hanger 9 HAN3550
MLP Aluminum Servo Arms, Half, 1.0" 2 AirWild
Twist'd Servo Extensions, 6” (Ailerons) 2 AirWild AW80-060-01
EFP Control Horn 4 AirWild AW61-112-02
Ball Link, 1/4 HD Ball (2/Pk) 2 AirWild DUB899
Ailerons
High-Torque Metal Gear Digital Servo, 120 oz.
In. (recommended) 2
Fuel Tank, 20 oz. 1 Du-Bro DUB420
Fuel Tubing 1 Aerotrend AER1073
Fuel Filler w/ T Coupler 1 Hanger 9 HAN115
Fuel Filter 1 Dynamiite DYN2006
Carbon Fiber Push Rod, Semi Flex (throttle
push rod) 1 Sullivan SUL580
Universal Ball Joint, 2-56 Threaded 2 DuBro DUB181
Fueling &
Engine
Ignition
Mini Digital Metal Gear Servo, 60 oz. In.
(recommended) 1

Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 5
HD On/Off Switches, Ignition 1 Cermark DSC Switch
Optical Kill Switch, Ignition 1 SmartFly SFIC
NiMH 6V/1650mA, Ignition Battery 1 Cermark NIMH6V1650
50 cc. Gasoline engine, DA-50R 1 DA DA50-R
Muffler, DA50-R 1 DA DA50-R Muffler
Extra-Style 4” Spinner, DA50 Back Plate 1 AirWild AW92-400-02D50
NX 22x8 2-blade Prop (Break-in Use) 1 AirWild AW200-2208-02
NX 23x8 2-blade Prop (Normal Use) 1 AirWild AW200-2308-02
Receiver, 7 Channels (minimum), PCM 1
Twist'd Servo Extensions, 6” (Ailerons) 2 AirWild AW80-060-01
NiMH 6V/1650mA Battery Pack 1 Cermark NIMH6V1650
HD On/Off Switch, RX Battery 1 Cermark DSC Switch
Receiver
Electronics
Velcro Strips (Misc. amount)
Accessories WingPAK Pro-Series, 30% 1 AirWild AW80-110-01
•This list contains items that we believe offering the highest quality and reliability for our
particular application. Nevertheless please do not feel restricted to such selections as
many other comparable options are available on the market.
•AirWild Hobbies in no way warrants these products on behalf of the original
manufacturers. All warranty related issue should be addressed with the manufacturer
directly.
Disclaimer:
This list is provided only as a reference. AirWild Hobbies, Inc. does not in any fashion guarantee nor
assumes product liabilities of their uses by customers. Please consult your local hobby shops or contact
manufacturers directly for specific information. Buyer assumes all risks of use.

Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 6
For your convenience we have also put together two very complete hardware packages, each
consists of high-quality, name-brand products. To purchase these packages please contact
AirWild Hobbies directly.
This hardware package is provided as a convenience to end users. AirWild Hobbies, Inc. does not in any
fashion guarantee nor assumes product liabilities of their uses by customers. Buyer assumes all risks of
use.
AirWild 29% Extra 260 Hardware Package (AW80−204−01−F/H/J)
Functional
Group Description Qty. Mfgr. Mfg. P/N
Wheel Axles, 5/32''x2'" (2/Pk) 1 DuBro DUB248
Wheel Collars, 5/32" (4/Pk) 1 DuBro DUB140
SkyLite Main Wheel, 3" (2/Pk) 1 Sullivan SUL877
Tail Wheel, 1” 1 DuBro DUB100TW
Landing
Gear &
Tail Wheel
Wheel Collars, 3/32” (4/Pk) 1 DuBro DUB138
MLP Aluminum Servo Arm, 3” (Specify Servo) 1 AirWild TBD
Cable Attach Fitting (4/Pk) 1 AirWild AW60-090-01
Pull-Pull Cable, 60 lbs. 1 AirWild 60WN
4-40 Safety Lock Kwik-Link (2/Pk) 1 DuBro DUB817
Rudder
Ball Link, 1/4 HD Ball (2/Pk) 1 DuBro DUB899
MLP Aluminum Servo Arm, 1.25"(Specify Servo) 2 AirWild TBD
Ball Link, 1/4 HD Ball (2/Pk) 2 DuBro DUB899
#4-40 Threaded-End Carbon Fiber Push Rod 2 AirWild AW60-200-01
Elevators
Twist'd Servo Extensions, 18” 2 AirWild AW80-064-01
Titanium Pro-Link, 1.5" (2/Pk) 1 Hanger 9 HAN3550
MLP Aluminum Servo Arm, 1" (Specify Servo) 2 AirWild TBD
Twist'd Servo Extensions, 6” (Ailerons) 2 AirWild AW80-060-01
Ailerons
Ball Link, 1/4 HD Ball (2/Pk) 2 AirWild DUB899
Fuel Tank, 20 oz. 1 Du-Bro DUB420
Gas Stopper Conversion Kit 1 Du-Bro DUB400
Fuel Tubing 1 Aerotrend AER1073
Fuel Filler w/ T Coupler 1 Hanger 9 HAN115
Fueling
Fuel Filter 1 Dynamite DYN2006
Receiver Twist'd Servo Extensions, 6” (Ailerons) 2 AirWild AW80-060-01
Recommended Extra 260 Electronics Package (AW80−205−01−F/J)
Functional
Group Description Qty. Mfgr. Mfg. P/N
Optical Kill Switch, Ignition 1 SmartFly SFIC
NiMH 6V/1650mA (Ignition) 1 Cermark NIMH6V1650
Ignition DSC HD On/Off Switches, Ignition
(Specify JR or Futaba type) 1 Cermark DSC Switch
DSC HD On/Off Switches, RX
(Specify JR or Futaba type) 1 Cermark DSC Switch
RX NiMH 6V/1650mA (Ignition) 1 Cermark NIMH6V1650

Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 7
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PR RE EP PA AR RI IN NG G F FU US SE EL LA AG GE E F FO OR R A AS SS SE EM MB BL LI IN NG G: :
Remove fuselage from the shipping box and place it on a flat working surface. Refer to the
following illustration to familiarize yourself with various key features of the fuselage before
attempting to assembly the airplane. A good preparation goes a long way.
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EN NG GI IN NE E
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MO OU UN NT TI IN NG G: :
;Required Parts Qty. ;Required Parts Qty.
Fuselage 1 Cowl 1
Spinner, 4 in., Extra (option) 1 Engine (option) 1
Since there are many excellent choices of engines for this airplane, we can only provide a basic
reference for a typical installation. Use the following dimensional drawings in conjunction with
your engine’s outline specifications to determine the proper setup necessary for your particular
engine. Please carefully review all dimensions before proceeding.
For DA50-R users, we have prepared a very comprehensive guide on installing DA50-R in a
later section. Familiarize yourself with the general guide before skipping to the DA50-R section.
Warning:
Under no circumstances never disassemble, cut into, nor break up engine box structure to
adapt for your particular engine. Failure to comply will void manufacturer warranty.
Dimensional References – Engine Installation

The following procedures is a non-brand specific guide to install your particular engine. This by
no means is the ONLY way NOR does it apply to all engines across the board. This is simply
one user’s general approach, written for you information only.
General Guideline for Installation of Radial-Mount Engine:
Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 8
1. Determine the full length of your engine, from
base of engine mount to the prop hub. Let’s call
this dimension X. For the purpose of discussion
we use DA50-R’s dimension for illustration.
2. Now refer to the “dimensional reference – engine
installation” in the previous section, take the
Diagonal Distance (170.25 mm) and subtract X
from it.
Y = 170.25mm – X
3. Dimension Y is the thickness of spacer you need to fabricate to position the engine for the
proper clearance. Use a 3/4” ~ 1” wooden dowel which you can easily find at your local
hardware supply, ie. Home Depot, and then cut to length.
STAND-OFF FABRICATION
Cut dowel to the desired length. Make sure they are all of even length. Use a drill press to do the next step.
Drill a center hole of the appropriate diameter for the engine mounting bolt to run through the dowel. Next,
saturate the through hole and two ends of the dowel with thin CA. Harden with CA Kicker. This will
prevent the dowel from splitting under pressure. Repeat same steps to fabricate the remaining pieces.
4. Next you need to locate and drill the mounting pattern for your radial-mount engine. A set
of offset center lines has been laser scored onto the front of firewall. Refer to your engine
manual in conjunction with the center line references to locate the bolt pattern. Drill and
mount your engine accordingly.
DA50-R Engine Installation Guide
1. Make sure your DA aluminum stand-offs is the standard-size, 2.5” set.
2. Fabricate four (4) 0.25” (6.35mm) thick spacers out of 5-layer, 0.25” thick plywood.
3. Install spacer between stand-off and fire wall.

For your convenience we have created a sheet of DA50-R mounting bolt pattern template to
simplify your work. Simply cut out the template, superimpose it onto the firewall and locate the
mounting holes that way.
Mounting Holes Located & Drilled DA Standoffs Installed
(0.25” plywood spacers not shown) DA50-R Installed (0.25” plywood spacers not shown)
Installing the DA ignition module is the next thing to do. The ideal place for ignition module is
on the bottom surface of the engine box, as shown in the illustration below
DA50-R Ignition Installation Guide
1. Turn the airplane upside down to have the bottom of the
engine box facing up.
2. Place ignition module in the middle of the surface. Mark
and cut two slots to be used for strapping down the ignition
module. We prefer using Velcro strip to for this application.
3. Apply thin CA to the perimeter of the slot. This will reduce
chances of plywood splitting. Harden with CA Kicker.
4. Use Velcro strip to secure ignition module as illustrated.
Cushion the module with a piece of foam.
5. Drill a hole through the bottom surface to route the battery
connector of the ignition module to the inside of the engine
box where the ignition battery will situate.
Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 9

The block diagram below illustrates how we completed the rest of the ignition power distribution
setup. Refer to our “Suggested Component List” for the specifics on individual components.
6. Your ignition battery can be strapped down using the same
Velcro strip or you can use a second Velcro strip to secure
the ignition battery. Make sure to also cushion the ignition
battery pack.
7. Cutout for the ignition battery switch has been precut and is
located in front of former #2 as illustrated. Cutout is
dimensioned to fit a DSC Super Switch. Cut away Ultracote
to reveal cutout and mount switch accordingly.
8. An optical ignition kill switch is not required but highly
recommended for safety as it allows you to remotely turn off
engine in case of emergency, not to mention the fact that it
is also a convenience. Our preferred device is the SmartFly
Optical Kill Switch as it is extremely compact and proven
over the years to be very reliable, and also offers a
detachable and highly visible LED for status display of
ignition power.
Before mounting the optical kill switch you do have to make one modification; change
SmartFly Optical Kill Switch’s ignition side connector from a standard 3A rated servo
connector to a 10A-rating Anderson Power Poles (APP) connector provided in your
DA50-R ignition package. Unfortunately this is inevitable as there is no set standard for
interconnecting engine related devices in the RC hobby industry. Get your soldering iron out.
Find some heat shrink tubing and get started. Refer to photos below for BEFORE and AFTER.
Mount optical kill switch with a
double-sided foam tape. Stock SmartFly optical kill switch shown with a servo-type connector
for ignition.
Modified SmartFly optical kills
switch with an APP connector for
DA50 ignition.
When done, find a spot to mount your SmartFly optical ignition kill switch. Use adhesive back
foam tape or Velcro tapes to secure it. You are done with this part of installation.
Doc. No.# AW70-105-01, Rev. 3 Copy Right 2006, AirWild Hobbies, Inc. Page 10