Eratix 3D 25e Assembly Manual Specifications Wingspan: Fuselage Length: Wing Area: Weight of Model w/o Battery: Weight of Model with Battery: Radio: 54 in (1370 mm) 53 in (1350 mm) 695 sq in (44.9 sq dm) 3–3.25 lb (1.4–1.5 kg) 3.75–4 lb (1.7–1.
Introduction Table of Contents Specifications............................................................................... 1 Introduction................................................................................. 2 Using the Manual......................................................................... 2 Trim Scheme................................................................................ 2 Contents of Kit/Parts Layout..........................................................
Contents of Kit/Parts Layout Large Replacement Parts: EFL4076 Wing Set w/Ailerons EFL4077 Fuselage EFL4078 Tail Set EFL4080 Main Landing Gear EFL4083 Fuse Hatch EFL4085 Canopy EFL4079 Cowling EFL4081 Wheel Pants EFL4084 Wing Tube Small Replacement Parts HAN305 Pro-Lite Wheels, 2 3/4-inch (70mm) EFL4082 Pushrod Set EFLA213 E-flite/JR/Horizon Decals Required Tools and Adhesives Tools & Equipment EFLA258 EFLA257 EFLA251 Screwdriver, #1 Phillips Screwdriver, #0 Phillips (Both included with EFLA250) Hex Wren
Required Radio Equipment You will need a minimum 6-channel transmitter, receiver, and four mini 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. Note: We recommend the crystal-free, interference-free Spektrum™ DX7 2.4GHz DSM2™ 7-channel radio. The complete system includes standard servos, which are not required for the Eratix 3D 25e.
Recommended High Power Precision Aerobatic Setup EFLM4032A EFLA1060 APC13065E EFLAEC303 THP42004S2PPL Or THP38504SX Power 32 BL Outrunner, 770Kv 60A Pro Switching BEC Brushless ESC Electric Propeller, 13x6.5E EC3 Dev & Batt, Male/Female 4200mAh 4S2P 14.8V Li-Po, 13GA 3850mAh 4S 14.8V Li-Po, 13 GA This is a high power 3D/Aerobatic setup with very strong aggressive performance.
Limited Warranty Damage Limits (a) This warranty is limited to the original Purchaser ("Purchaser") and is not transferable. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This warranty covers only those Products purchased from an authorized Horizon dealer. Third party transactions are not covered by this warranty. Proof of purchase is required for warranty claims.
Questions, Assistance, and Repairs Non-Warranty Repairs Your local hobby store and/or place of purchase cannot provide warranty support or repair. Once assembly, setup or use of the Product has been started, you must contact Horizon directly. This will enable Horizon to better answer your questions and service you in the event that you may need any assistance. For questions or assistance, please direct your email to productsupport@horizonhobby.com, or call 877.504.
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.
Landing Gear Installation Required Parts • Fuselage • Main landing gear • Wheel pant (left & right) • 2 3/4-inch (70mm) wheel (2) • 4-40 x 1/2-inch socket head screw (2) • #4 washers (6) • 4mm locknut (4) • 4mm x 35mm machine screw (2) • 2mm x 8mm wood screws (4) 1. Place the landing gear onto the bottom of the fuselage. Attach with two 4-40 x 1/2-inch socket head screws and two #4 washers.
2. Slide the 4mm x 35mm machine screw through one of the 2 3/4-inch wheels. Secure a 4mm lock nut against the wheel. Make sure the wheel still spins freely. 4. Slide the wheel pant over the wheel. The 4mm washer will be inside the wheel pant. Use two 2mm x 8mm sheet metal screws threaded into the pre-drilled holes to attach the wheel pant to the landing gear. Tighten the 4mm lock nut using a 7mm nut driver to complete the assembly. 3.
Motor Installation 2. Attach the mount to the motor using the hardware provided with the motor. 3. Use four 4-40 x 3/8-inch socket head screws to secure the motor to the firewall. The blind nuts installed behind the firewall can be moved to allow for the mounting of various sizes of motors.
3. Plug the motor into the speed control. Use hook and loop tape to secure the speed control inside the fuselage out of the way of the battery. 4. Use the two hook and loop straps included with your plane to secure the battery inside the fuselage. Note: If the battery slides forward or backward, use hook and loop tape on the battery and inside the fuselage to prevent the battery from moving.
7. Slide the cowling onto the fuselage. Use the propeller adapter to attach the propeller and spinner backplate temporarily onto the motor. Position the cowling so it lines up with the spinner backplate, and has a small gap between the spinner backplate and cowling. 8. With the cowl aligned with the spinner, use a drill and 1/16-inch (1.5mm) drill bit to drill through the cowl and into the fuselage using the holes in the cowling. E-flite Eratix 3D 25e ARF Assembly Manual 9.
Aileron Installation Required Parts • Wing • Receiver • Servo w/hardware (2) • Long servo arm (2) • CA hinge (8) • Clevis (2) • Clevis retainer (2) • Nylon control horn (2) • 3mm x 30mm machine screw (2) • Control horn standoff (2) • Control horn washer (2) 7 • 2 /8-inch (73mm) pushrod wire (2) • Pushrod wire connector (2) Required Tools and Adhesives • Rotary tool • T-pins • Felt-tipped pen • Threadlock • #1 Phillips screwdriver • • • • 2. Use a rotary tool and a 1/16-inch (1.
4. Slide the aileron into position on the wing. The T-pins installed in the hinges will help in keeping equal amounts in the wing and aileron. 6. Gently pull the aileron from the wing once the CA has fully cured. This is to verify the hinges are glued securely. 5. Align the aileron with the wing tip. Apply a few drops onto each hinge. Make sure to apply the CA on both the top and bottom of the hinge. Important: Do not use accelerator on the hinges.
7. Flex the aileron through its range of motion a few times to break in the hinges. 8. Repeat Steps 1 through 7 to complete the aileron installation. 9. Place the servo into the opening in the wing. Use a felt-tipped pen to mark the locations for the servo mounting screws.
10. Use a pen drill and 1/16-inch (1.5mm) drill bit to drill the four locations for the servo mounting screws. 12. Secure the servo in the wing using the screws provided with the servo. Note the servo horn faces towards the aileron. 11. Apply a few drops of thin CA to each of the four holes. This will harden the underlying wood and help in preventing the screws from pulling out.
13. Use a hobby knife to pierce the covering for the 3mm x 30mm machine screw. Slide the screw into the hole from the top of the wing. Slide a control horn washer onto the screw, then thread the control horn standoff onto the screw. Use a #1 Phillips screwdriver to tighten the assembly. 14. Thread the nylon control horn onto the control horn screw until the top of the horn is flush with the top of the screw. 15. Slide a clevis retainer onto a nylon clevis.
16. Use a pushrod wire connector to secure the wire to the servo arm. Trim any excess wire using side cutters. Wing Installation Required Parts • Fuselage • Wing (right and left) • Wing tube •#4 washer (2) 1/ -inch machine screw (2) • 4-40 x 2 Required Tools and Adhesives • Hex wrench: 3/32-inch 1. Slide the wing tube into a wing panel. 17. Repeat Steps 9 through 16 to complete the aileron servo installation.
2. Remove the hatch from the fuselage. Slide the wing panel with tube into position on the fuselage. Stabilizer and Elevator Required Parts • Fuselage w/wing installed • Stabilizer • CA hinge (4) Required Tools and Adhesives • Hobby knife • Ruler • Thin CA • 30-minute epoxy • Elevator • Elevator joiner wire • Felt-tipped pen • T-pins • Sandpaper 1. Position the stabilizer into the slot in the aft end of the fuselage. Check that the stabilizer is centered in the fuselage. 3.
2. Measure from the stab tip to the wing tip. Adjust the stab until the measurements are equal. A 4. Double-check the adjustments from Steps 1 through 3. Use a felt-tipped pen to trace the outline of the fuselage onto the top and bottom of the stabilizer. A A=A 3. View the airframe from the rear and make sure the wing and stab are parallel. If not, lightly sand the stab saddle until they are.
5. Use a sharp hobby knife to cut the covering slightly inside the lines drawn. Be very careful not to cut into the underlying wood, as this will weaken the stab and cause it to fail in flight. Note: You can use a soldering iron instead of a knife. This will eliminate the chances of cutting into the wood. 22 6. Slide the elevator jointer into position, then the stabilizer. 7 . Check the alignment and make sure everything lines up. Wick thin CA into the joint between the fuselage and stabilizer.
8. Prepare two CA hinges by placing a T-pin in the center of each hinge. Test fit the elevator against the stabilizer. Make sure the joiner wire fits into the elevator as well. 10. Follow the same procedure for hinging the ailerons to hinge the stabilizer/elevator. 9. Rougher the joiner wire using medium grit sandpaper. Apply 30-minute epoxy to the joiner wire and in the hole in the elevator as well. E-flite Eratix 3D 25e ARF Assembly Manual 11.
Rudder and Fin Required Parts • Fuselage • Fin • Tail wheel assembly • Wheel collar w/setscrew • Rudder • CA hinge (3) • Tailwheel Required Tools and Adhesives • Hobby knife • 30-minute epoxy • Hex wrench: 1.5mm • Thin CA • Medium grit sandpaper 24 2. Hinge the rudder and fin, using the same process as described in Aileron Hinging. Use three hinges for this process. Make sure to install the tail wheel into the rudder as well, gluing it with 30-minute epoxy. 3.
Rudder and Elevator Servos Required Parts • Fuselage • Long servo arm (2) • Servo (2) • Clevis (2) • Clevis retainer (2) • Nylon control horn (2) • 3mm x 30mm machine screw (2) • Control horn standoff (2) • Control horn washer (2) • 4-inch (102mm) pushrod wire • 5 1/2-inch (140mm) pushrod wire • 12-inch (305mm) servo extension (2) • Pushrod wire connector (2) Required Tools and Adhesives • Phillips screwdriver (small) • 30-minute epoxy • String or dental floss 2.
4. Assemble the elevator linkage using the 4-inch (102mm) pushrod wire. Attach the linkage to a long servo arm with a pushrod connector. 26 5. Repeat Steps 1 through 4 for the rudder servo and linkage using the 5 1/2-inch (140mm) pushrod wire.
6. Plug the elevator servo, rudder servo and ESC into the receiver. Mount the receiver to the inside of the fuselage using hook and loop material. Route the antenna wire through the bottom of the fuselage to the rear, or as directed by your radio instruction manual. Note: Do not cut or change the length of the antenna wire, as this will reduce the range of your radio system. E-flite Eratix 3D 25e ARF Assembly Manual Control Throws 1. Turn on the transmitter and receiver of your aircraft.
The control throw measurements are taken at the widest point on the surface. Low Rate High Rate Ailerons: Up Down 1-inch (25mm) 1-inch (25mm) 3-inch (76mm) 3-inch (76mm) Elevator: Up Down 1-inch (25mm) 1-inch (25mm) 3 1/2-inch (90mm) 3 1/2-inch (90mm) Rudder: Right Left 2-inch (51mm) 2-inch (51mm) 4 1/2-inch (114mm) 4 1/2-inch (114mm) Center of Gravity An important part of preparing the aircraft for flight is properly balancing the model.
Range Test Your Radio 1. Before each flying session, be sure to range check your radio. This is accomplished by turning on your transmitter with the antenna collapsed. Turn on the receiver in your airplane. With your airplane on the ground and the engine running, you should be able to walk 30 paces (approximately 100 feet) away from your airplane and still have complete control of all functions. If not, don’t attempt to fly! Have your radio equipment checked out by the manufacturer. 2.
Flying Your Eratix 3D 25e Flying the Eratix 3D 25e is about as fun as it can get at the field. A very light wing loading and extreme control throws make for some exciting 3D flying. Verify that your CG is at the correct location as per the manual and that you have your rates set up to your liking. Verify all control throws are in the correct direction and the motor spins in the correct direction as well. Point the model into the wind and add some throttle trim until the motor begins to turn.
2007 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.
© 2007 Horizon Hobby, Inc. 4105 Fieldstone Road Champaign, Illinois 61822 (877) 504-0233 10344 horizonhobby.com E-fliteRC.
