Extra 260 3D Profile Assembly Manual
Table of Contents Introduction.................................................................3 Specifications..............................................................3 Using the Manual........................................................3 Contents of Kit/Parts Layout..........................................4 Outrunner Setup..........................................................4 Variable Prop Outrunner Setup......................................4 Optional Accessories...........................
Introduction The Extra 260 3D Profile was designed by Aerodynamicist and E-TOC champ George Hicks to give profile 3D foamie fans a great-looking, lightweight plane with competitionlevel performance. At the heart of its superb flight characteristics is a rigid, carbon reinforced Depron foam airframe. This unique design eliminates flex so control response is crisp and precise.
Contents of Kit/Parts Layout Small Replacement Parts EFL2305 Wheel Pants EFL2306 Firewall Mount w/Hardware EFL2307 Aileron Rods EFL2308 Carbon Fiber Stiffeners EFL2309 Landing Gear EFLA200 Micro Control Horns FLA203 Micro Control Connectors EFLA221 Foam Park Wheels, 1.5" Outrunner Setup EFLM1150 Park 300 Brushless Outrunner Motor, 1380Kv EFLA1010 10-Amp Pro Brushless ESC APC08038SF 8x3.8 Slow Flyer Prop THP4803SJPL 480mAh 3-Cell 11.
Required Radio Equipment You will need a minimum 6-channel transmitter (for proper mixing and dual rate capabilities), crystals, micro receiver, and three sub-micro servos. You can choose to purchase a complete radio system that includes all of these items or, if you are using an existing transmitter, just purchase the other required equipment separately. We recommend the crystal-free, interference-free Spektrum® DX6 2.4GHz DSM® 6-channel system, which includes a micro receiver and 4 sub-micro 7.
Warning An RC aircraft is not a toy! If misused, it can cause serious bodily harm and damage to property. Fly only in open areas, preferably at AMA (Academy of Model Aeronautics) approved flying sites, following all instructions included with your radio. Keep loose items that can get entangled in the propeller away from the prop, including loose clothing, or other objects such as pencils and screwdrivers. Especially keep your hands away from the propeller.
Note on Lithium Polymer Batteries Lithium Polymer batteries are significantly more volatile than alkaline or Ni-Cd/ Ni-MH batteries used in RC applications. All manufacturer’s instructions and warnings must be followed closely. Mishandling of Li-Po batteries can result in fire. Always follow the manufacturer’s instructions when disposing of Lithium Polymer batteries. Limited Warranty Period Horizon Hobby, Inc.
Limited Warranty & Limits of Liability Pursuant to this Limited Warranty, Horizon Hobby, Inc. will, at its option, (i) repair or (ii) replace, any product determined by Horizon Hobby, Inc. to be defective. In the event of a defect, these are your exclusive remedies. This warranty does not cover cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or modification of or to any part of the product.
Safety Precautions This is a sophisticated hobby product and not a toy. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children without direct adult supervision. The product manual contains instructions for safety, operation and maintenance.
Warranty Inspection and Repairs To receive warranty service, you must include your original sales receipt verifying the proof-of-purchase date. Providing warranty conditions have been met, your product will be repaired or replaced free of charge. Repair or replacement decisions are at the sole discretion of Horizon Hobby.
Safety, Precautions, and Warnings As the user of this product, you are solely responsible for operating it in a manner that does not endanger yourself and others or result in damage to the product or the property of others. Carefully follow the directions and warnings for this and any optional support equipment (chargers, rechargeable battery packs, etc.) that you use. This model is controlled by a radio signal that is subject to interference from many sources outside your control.
Airframe Assembly Required Parts Vertical fuselage Horizontal fuselage Wing w/ailerons Stabilizer w/elevators Motor mount Required Tools and Adhesives Foam-safe CA, Medium Foam-safe accelerator (can be used to speed up cure time) Square 12 1. Locate the vertical and horizontal fuselage pieces. Slide the horizontal fuselage into the vertical fuselage starting at the opening for the wing/radio equipment. Use care not to damage any of the alignment tabs on the vertical fuselage.
2. Locate the wing and slide it into the vertical fuselage underneath the horizontal fuselage. Use care not to damage either the vertical or horizontal fuselage pieces. 3. Slide the horizontal stabilizer into the fuselage, being careful not to damage any of the alignment tabs. You may need to move the horizontal fuselage out of the vertical fuselage slightly to get the stabilizer into position. Hint: Fold one of the ailerons up and onto .
4. Align the stabilizer with the horizontal fuselage. Use foam-safe CA to glue the stabilizer to ONLY the horizontal fuselage. 5. Align the wing with the horizontal fuselage. Use foam-safe CA to glue the wing to ONLY the horizontal fuselage. Hint: Use the holes for the aileron servos to aid in the alignment between the horizontal fuselage and wing. Note: There are slots at the front and rear of the wing. Lightly lift the area and apply CA underneath for a greater gluing area.
Important: If you plan on using CA accelerator, make sure it is foam compatible. Many accelerators will destroy the foam used on this model. 6. Place the motor mount in position to aid in 7. Apply foam-safe CA to the joint between the vertical and horizontal fuselage pieces from the leading edge of the wing to the front of the fuselage. Use a square to make sure the two pieces are aligned. Apply CA to both the top and bottom of the vertical fuselage.
8. Complete gluing the vertical and horizontal fuselage pieces together. Continue to use a square to keep both pieces in alignment.
Installing the Bracing Required Parts Assembled airframe Carbon rod, 9 7/8" (250mm) Carbon rod, 9 1/2" (240mm) Carbon rod, 4 3/4" (120mm) Carbon rod, 4 1/2" (113mm) Carbon rod, 4 1/8" (105mm) (2) (2) (2) (4) (4) 1. Locate the two 4 3/4" (120mm) carbon rods. Pass the rods through the fin and stabilizer. Use foam-safe CA to glue the rods to the fin ONLY at this time. Required Tools and Adhesives Foam-safe CA, Medium Sandpaper Hobby knife Note: It is important that each carbon .
2. Place the 4 1/2" (113mm) carbon rods on the bottom of the stabilizer to the bottom of the vertical fuselage. There is a notch in the fuselage for the rods to rest in. Make sure the rods are touching each other as well as the carbon blade spar. Use foam-safe CA to glue the rods at the fuselage ONLY. 18 3. Check the alignment of the fin to the stabilizer. They should be perpendicular to each other. Check that the rods in the stabilizer are touching.
4. Locate two of the 4 1/8" (105mm) carbon rods. Install these rods, like the rods installed in Step 3, to the horizontal fuselage. Again, there are notches for the carbon rods. Make sure the rods are touching the previously installed rods and the pre-installed carbon blade spars on the edges of the foam. 5. The next rod to install is the 4 1/2" (113mm) rod from the rod in Step 4 to the bottom of the vertical fuselage.
6. To complete the fuselage bracing, install a 4 1/8" (105mm) rod from the previous rod back down to the horizontal fuselage. You will need to trim the fuselage to expose the carbon support so the rod can be glued securely to the brace. 7. Check the joints in Steps 1 through 6 to ensure you have a nice fillet of CA at every junction where you have glued the carbon rods to each other and the fuselage. Apply additional CA if necessary to create this fillet. 20 8.
Radio Installation Required Parts Airframe Servos (4) Micro control connector (4) Control connector backplate (4) Micro control horn (4) Control horn backplate (4) 2mm x 4mm screw (4) Aileron pushrods, 4 1/2" (115mm) (2) Rudder pushrod, 12" (305mm) Elevator pushrod, 12 1/2" (320mm) Hook and loop material Required Tools and Adhesives Foam-safe CA, Medium Low-temperature hot glue Drill bit: 1/16" (1.5mm) Screwdriver, #0 Phillips 22 1.
2. Install the rudder and elevator micro control horns at this time as well. Make sure the rudder horn extends opposite of the elevator horn. 3. Remove the servo arms from the four servos. Drill a 1/16" (1.5mm) hole in the end of all four of the servo arms. Note: We then suggest using the longest servo arms available for your servo to help achieve maximum control throws for 3D flying.
4. Slide a micro control connector into the hole drilled in the previous step. Secure the connector using a control connector backplate from the opposite side of the connector. Repeat for all four servo arms. Note: The connectors will face out away from the servo when installed. Remove any unused sides or portions of the servo arms. 24 5. Plug the servos into the receiver. Turn on the transmitter and receiver and check the operation of the servos.
6. Use hot glue to install the aileron servos. Note: The servo arms face toward the tips of the wing and the output shaft of the servo is toward the leading edge of the wing. 7. Install the rudder and elevator servos using hot glue. The output shafts of both servos face the front of the aircraft.
8. Locate the 4 1/2" (115mm) pushrod. Install the “Z” bend into the hole of the control horn that is one away from the aileron. This will provide for 3D throws of the aileron. Pass the pushrod through the connector. Check that the aileron servo is centered using the radio. Hold the aileron parallel to the wing and use the 2mm x 4mm screw in the connector to secure the pushrod wire. Repeat this for the other aileron pushrod.
9. Install the 12" (305mm) pushrod for the rudder, and the 12 1/2" (320mm) pushrod for the elevator. Don’t forget to check to make sure the servos and control surfaces are centered before tightening the 2mm x 4mm screws. 10. Install the receiver using hook and loop material. The exact position of the receiver may change, depending on how your aircraft balances.
Motor and Battery Installation Required Parts Airframe Plywood motor mount Motor w/hardware Electronic speed control Propeller #2 x 8mm or #3 x 8mm wood screw (included with motor) Hook and loop material 1. Locate the plywood motor mount and aluminum X-mount for your particular motor. Center the motor mount on the plywood and mark the holes for the mounting screws using a felt-tipped pen making sure the holes you mark do not interfere with the carbon spars the mount will glue into.
2. Drill pilot holes for the mounting holes marked 3. Attach the mount to your particular motor. on the plywood mount using a 1/16" (1.5mm) drill bit. Note: If you are using a variable pitch propeller for your Extra, you should prepare the motor as instructed in the instructions included with your propeller system.
4. Attach the motor to the plywood mount using two #2 x 8mm wood screws or two #3 x 8mm wood screws. 30 5. Use a hobby knife to remove the fuselage material from the variable pitch servo pushrod slot opening mount to the front of the fuselage.
6. Use foam-safe CA to glue the plywood mount to the fuselage. Make sure the mount is pressed fully against the fuselage, with each carbon support in each slot, to make sure it is aligned properly. Note: Steps 7 and 8 cover the installation of the servo and linkage for a variable pitch propeller. Skip to Step 9 if you are not using a variable pitch propeller. Note: Be sure to consult the manual for your chosen variable pitch prop unit before proceeding with installation of the pitch servo and linkage.
8. Install the pitch servo as shown. Take your time to make sure the servo horn and linkage does not bind against the fuselage. Also check that the linkage is not being put under a load when connected. Use a hobby knife to remove any portions of the fuselage that cause binding. Use foam-safe CA or hot glue to secure the servo to the fuselage.
9. Solder any necessary connectors to your speed control. Plug the speed control into the throttle channel of the receiver and to the motor. Use hook and loop to secure the speed control to the fuselage. 10. Attach the battery under the wing using hook and loop material. The location shown is an approximate location and can be repositioned as necessary to achieve the correct balance for your Extra.
11. Turn on the transmitter and bring the throttle trim and stick to the low throttle position. Plug the battery into the speed control and check the operation of the motor. It should rotate counterclockwise when viewed from the front of the aircraft. Use the instructions provided with your ESC to make corrections to the direction of rotation of the motor if necessary. 12. Install the propeller using the instructions provided with your motor or propeller system.
Landing Gear Installation Required Parts Airframe Landing gear strut (2) Wheel retainer (4) Wheel pant (2) 1 1/2" (38mm) foam wheel (2) Landing gear support disk (2) 1. Locate the landing gear strut, two wheel retainers and the wheel. Use foam-safe CA to install the wheel retainer onto the strut. The retainers will sandwich the wheel in position. Required Tools and Adhesives Foam-safe CA The landing gear is optional.
2. Pass the landing gear through the opening in the fuselage and wing. DO NOT use glue until instructed to do so. 3. Repeat Steps 1 and 2 for the remaining strut. 36 4. The struts should extend roughly 3/32" (2.5mm) through the top of the wing. This will give the landing gear support disks plenty of strut to attach to. Hint: You can just drop the disks into position and check to make sure the strut extends beyond the disk instead of measuring it.
5. Check that the wheels are parallel or have slight 7. Use foam-safe CA to glue the wheel pants to toe-in. Use foam-safe CA to glue the struts to the fuselage and each other. Make sure the wing is sitting parallel to the ground so the wheels are located at the same height. the wheel retainers. Make sure the pants are positioned so they won’t drag on the ground during takeoff and landing before applying the CA. 6. Install the landing gear support disks using foam-safe CA.
Control Throws Turn on the transmitter and receiver of your Extra 260. Check the movement of the rudder, elevator and ailerons using the transmitter. Reverse the direction of the servos at the transmitter if necessary. Use a ruler to adjust the throw of the elevator, ailerons and rudder. Adjust the position of the pushrod at the control horn to achieve the following measurements when moving the sticks to their endpoints. Measurements are taken at the widest point on the surface.
Center of Gravity Caution: Do not inadvertently skip this step! The recommended Center of Gravity (CG) location for the Extra 260 is 3 1/2" (90mm) behind the leading edge of the wing against the fuselage. After the first flights, the CG position can be adjusted for your personal preference. Range Testing the Radio 1. Be sure to range check your radio before each flying session. This is accomplished by turning on your transmitter with the antenna collapsed. Turn on the receiver in your airplane.
Preflight Check Your Radio Before going to the field, be sure that your batteries are fully charged per the instructions included with your radio. Charge both the transmitter and receiver pack for your airplane. Use the recommended charger supplied with your particular radio system, following the instructions provided with the radio. In most cases, the radio should be charged the night before going out flying. Before each flying session, be sure to range check your radio.
Notes 41
2006 Official AMA National Model Aircraft Safety Code GENERAL 1) I will not fly my model aircraft in sanctioned events, air shows or model flying demonstrations until it has been proven to be airworthy by having been previously, successfully flight tested. 2) I will not fly my model higher than approximately 400 feet within 3 miles of an airport without notifying the airport operator. I will give right-of-way and avoid flying in the proximity of full-scale aircraft.
2006 Official AMA National Model Aircraft Safety Code 4) I will operate my model using only radio control frequencies currently allowed by the Federal Communications Commission. (Only properly licensed Amateurs are authorized to operate equipment on Amateur Band frequencies.) 5) Flying sites separated by three miles or more are considered safe from site-to-site interference, even when both sites use the same frequencies.
® © 2006 Horizon Hobby, Inc. 4105 Fieldstone Road Champaign, Illinois 61822 (877) 504-0233 horizonhobby.com E-fliteRC.
