T-34 Mentor 25 ePTS Assembly Manual Specifications Wingspan: Length: Wing Area: Weight w/ Battery: Weight w/o Battery: 55 in (1575mm) 44 in (1110mm) 545 sq in 34.9 sq dm) 4.4–4.5 lb (1.9–2.0 kg) 5.0–5.2 oz (2.2–2.
Table of Contents Specifications....................................................................... 1 Introduction.......................................................................... 2 Using the Manual................................................................. 2 Contents of Kit/Parts Layout.................................................. 3 Required Tools and Adhesives............................................... 3 Optional Accessories......................................................
Contents of Kit/Parts Layout Large Parts: EFL4801 EFL4802 EFL4803 EFL4804 EFL4805 EFL4806 EFL4807 EFL4808 EFL4809 EFLP12080E Wing Set w/Ailerons Fuselage Tail Set Cowling Fuselage Hatch Pushrod Set Landing Gear Spinner Tail Cone 12x8 Electric Propeller Required Tools and Adhesives Tools & Equipment EFLA250 Park Flyer Tool Assortment, 5-piece Or Purchase Separately EFLA257 Screwdriver, #1 and #2 Phillips (or included with EFLA250) Covering iron Adjustable wrench Pin drill Drill bit: 1/16-inch (1.
Warranty Information Warranty Period Horizon Hobby, Inc., (Horizon) warranties that the Products purchased (the “Product”) will be free from defects in materials and workmanship at the date of purchase by the Purchaser. Limited Warranty (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.
Questions, Assistance, and 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 877.504.0233 toll free to speak to a service technician.
Note on Lithium Polymer Batteries Safety, Precautions, and Warnings 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.
Wing and Landing Gear Assembly 2. Connect the clevis to the flap control horn. You will note the flap is driven down when you connect the clevis. We will adjust this position in a few steps. 3. Slice the aluminum anti-rotation pin into the wing. It is suggested to use medium CA to glue the pin in place to prevent it from falling out and getting lost.
4. Slide the wing tube into the wing panel at this time. 6. Slide the two wing panels tightly together. Once together install the wing securing strap with two screws using a #2 Phillips screwdriver. m 5. Attach the landing gear to the bottom of the wing using two landing gear straps, four 3mm x 10mm sheet metal screws and a #2 Phillips screwdriver. Attach both main gears at this time.
7. Slide the lead from the wing panel through the connector stay as shown. The stay will prevent the lead from being unplugged accidentally. E-flite T-34 Mentor ARF Assembly Manual 8. Rotate the lead in the stay so the colors align with those of the lead already installed. Plug the two connectors together and slide them tight against the stay. 9. Connect the flap linkage to the flap control horn.
Tail Installation Required Parts Fuselage assembly Fin/rudder 3mm locknut (2) Tail cone Stabilizer/elevator 3mm washer (2) 2mm x 8mm sheet metal screw (2) Required Tools and Adhesives Phillips screwdriver: #1, #2 Threadlock Adjustable wrench 10 2. Use a #2 Phillips screwdriver to remove the rudder control horn. You will need to loosen both the short black screw and control horn screw to remove the control horn. 3. Slide the rudder partially into the fuselage.
4. Slide the fin fully into position. Use two 3mm washers and two 3mm locknuts to secure the fin. Tighten these nuts down using an adjustable wrench. 5. Align the control horn so it is 90 degrees to the rudder as shown. E-flite T-34 Mentor ARF Assembly Manual 6. Center the control horn vertically in the slot on the side of the fuselage. Use a #2 Phillips screwdriver to tighten the black screw against the rudder control rod. Use threadlock on the screw to prevent it from vibrating loose.
7. Use a #2 Phillips screwdriver to tighten the control horn screw. Again, the use of threadlock is necessary to prevent the screw from vibrating loose. 8. Screw the nylon control horn in 1/4-inch (6mm). Connect the clevis from the rudder pushrod to the rudder control horn. 9. Attach the tail cone to the fuselage using two 2mm x 8mm sheet metal screws and a #1 Phillips screwdriver.
Battery and Wing Installation Required Parts Fuselage assembly Motor battery Wing assembly Nylon wing bolt (2) 2. Use the hook and loop straps to secure the motor battery in the fuselage. The position of the battery can be adjusted inside the fuselage to correctly balance the aircraft. For your initial flights, position the battery as far forward in the fuselage as possible. Required Tools and Adhesives Flat screwdriver: 1/4-inch 1.
3. Pass the leads for the ailerons (and flap) through the cross bracing in the fuselage. Guide the tab at the front of the wing into the slot in the fuselage. 4. Use two nylon wing bolts and a flat screwdriver to secure the wing to the fuselage. 5. Plug the aileron lead into the receiver in the slot marked AILE. (The flap servo is plugged into the AUX1 slot of the receiver when the optional flaps have been installed.) Replace the canopy back onto the fuselage.
Centering the Control Surfaces and Checking Control Direction Required Parts Assembled airframe Radio system 2. Turn the radio on and check that the sticks and trims have been centered. The transmitter should display "T-34EPTS" on the screen. Motor battery Required Tools and Adhesives AA battery (4) Note: This section is designed to help you become acquainted with the operation of the radio in correlation to the model.
3. Plug the motor battery into the speed control. Set the throttle stick to low throttle and turn on the speed control. You will hear a series of beeps or tones when you plug the battery in. During this process it is normal for the prop to pulse slightly as the ESC powers up. Please ensure you are not in line with the prop or in front of it during power up. 4. Your transmitter should still be on and the battery plugged in. Now turn the switch on inside the model.
Note: The following steps will ensure your flight controls are centered for the first flight. In the instructional DVD included with your T-34, we have shown you how to adjust the clevises and also servo arms if necessary. Use both of these instructions to accomplish the following steps. 6. Check the movement of the elevator with the radio system. Pulling the elevator/aileron stick (right stick on the transmitter) back will make the airplane elevator move up. Checking the Elevator 5.
18 7. Check the movement of the elevator with the radio system. Pushing the elevator/aileron stick forward will make the airplane elevator move down. Checking the Rudder 8. Center the rudder stick and trim. Thread the clevis in or out on the rudder pushrod until the rudder is aligned with the fin as shown.
9. Check the movement of the rudder using the transmitter. When the rudder/throttle stick (left side of the transmitter) is moved right, the rudder should also move right. E-flite T-34 Mentor ARF Assembly Manual 10. Check the movement of the rudder using the transmitter. When the left stick is moved left, the rudder should also move left.
Checking the Ailerons 20 11. Center the aileron stick and trim. Thread the clevis in or out on the aileron pushrod until the ailerons are aligned with the wing as shown. 12. Check the movement of the aileron using the transmitter. When the elevator/aileron stick is moved right, the right aileron will move up and the left aileron will move down.
13. Check the movement of the aileron using the transmitter. When the aileron/elevator stick is moved left, the left aileron will move up and the right aileron will move down. E-flite T-34 Mentor ARF Assembly Manual Reversing Direction of Flight Controls If you find any of the control surfaces moving in the opposite direction (example shown below), you will need to use the Servo Reversing feature of your radio system.
Setting the Control Throws Required Parts Assembled airframe Radio system Motor battery 2. Plug the motor battery into the speed control. Set the throttle stick to low throttle and turn on the speed control. Required Tools and Adhesives Ruler Your transmitter and model come out of the box set up and ready to fly. Should you need to replace your fuselage or wing due to a mishap or such, this section will help you reset your control throws to the factory settings.
Elevator Throw Rudder Throw 3. Use a ruler to check the amount of throw for the elevator. Move the elevator stick fully and check the measurements. Adjust the radio as necessary following the instructions provided with the radio to achieve the following measurements. Low Rate: 3/8-inch (9.5mm) (Up/Down) 4. Use a ruler to check the amount of throw for the rudder. Move the rudder stick fully and check the measurements.
Aileron Throw 5. Use a ruler to check the amount of throw for the ailerons. Move the aileron stick fully and check the measurements. Adjust the radio as necessary following the instructions provided with the radio to achieve the following measurements. Low Rate: 6. Once all the control throws have been set, make sure to slide the clevis retainers over the clevises to prevent them from opening accidentally.
General Maintenance 2. Check that the propeller adapter is tight using a hex wrench or screwdriver that fits into the hole in the adapter. You will turn this nut counterclockwise to loosen or clockwise to tighten. 3. To check that the motor is secure to the firewall, you will first need to remove the spinner. Use a 2.5mm hex wrench to remove the four screws that secure the cowling to the fuselage. Required Parts Fuselage Required Tools and Adhesives Phillips screwdriver: #1 Hex wrench: 2.5mm 1.
26 4. Use the same 2.5mm hex wrench to check the four screws that secure the motor to the firewall. Once the motor screws are tight, reverse the previous steps to install the cowling, propeller and spinner. 5. If your aircraft does not track straight during taxi, use the screw at the rudder servo and a #1 Phillips screwdriver to correct the trim. Do not use the radio trim for ground tracking. The rudder trim at the radio is only used to trim the rudder in flight.
Positioning the Flaps Required Parts Wing assembly Initial Training Flap Settings 1. Setting the linkage to the third hole back from the front of the stay sets the flaps to the position for initial flight training. This will allow the plane to fly at its slowest speed and will be slowest during landing as well. The setting for the flaps in this position is 1/2-inch (13mm) when measured from the trailing edge of the wing to the trailing edge of the flap.
Removing the NACA Wing Droops Advanced Setting 28 3. Setting the linkage in the forward hole will place the flap in the full "UP" position. This is the preferred position for those with flight experience, as the plane will fly more like a sport aircraft and will require the greatest amount of skill (for this type of aircraft) during landing. Required Parts Wing panel (left and right) 1. Carefully remove the tape from the wing on both the top and bottom of the wing droop.
2. Once the wing droop has been removed, use a cleaner to remove the tape residue from the wing. Operational Flap Installation (Optional) Required Parts Wing panel (left and right) Flap servo w/hardware Flap linkage (operational flap) Required Tools and Adhesives Phillips screwdriver: #1 Pin drill Thin CA Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm) 1. Carefully remove the flap stay from the wing panel as shown.
2. Position the flap servo in the wing. Use a felt-tipped pen to mark the locations for the four servo mounting screws. 3. Use a pin drill and 1/16-inch (1.5mm) drill bit to drill the four holes in the wing to mount the flap servo. 4. Apply a few drops of thin CA into each hole. This will harden the surrounding wood, making the screws more secure when they are installed.
5. Install the flap servo in the wing using hardware provided with the servo. The lead from the servo will pass through the wing and out of the same hole the aileron lead exits. 6. Use the radio system to center the flap servo. Install the servo arm so it is perpendicular to the servo. You will want equal throw in both directions from this position to operate the flaps. E-flite T-34 Mentor ARF Assembly Manual 7.
32 9. Slide the linkage connector on the wire, then rotate it so it snaps on the wire. 10. Use the radio to move the flap servo to the "UP" position. The servo arm will face toward the leading edge of the wing. Connect the clevis to the flap control horn. Check that the flap is aligned with the wing. If not, thread the clevis in or out until the flap is aligned with the wing.
11. Slide the wing panels together. Connect the linkage to the remaining flap control horn and adjust the linkage to set the neutral position for the remaining flap. Secure the wing panels together as outlined in the first section of the manual; Wing and Landing Gear Installation beginning on page 7. E-flite T-34 Mentor ARF Assembly Manual 12. Use the radio system to set the position for the flap.
Center of Gravity An important part of preparing the aircraft for flight is properly balancing the model. Caution: Do not inadvertently skip this step! The recommended Center of Gravity (CG) location for the T-34 Mentor ARF is 4 3/4– 4 7/8-inch (120–124mm) back from the leading edge of the wing. Mark the location of the CG on the top of the wing. Please balance your model while it is inverted with the battery installed.
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.
The Intermediate Flap Setting is set up for gentle flight with easy landing characteristics. This setting uses the flaps in their half down position and the NACA droops installed. In this setting, you will notice a slightly faster landing speed and still very gentle flight characteristics. A very slight amount of down elevator trim is required for level flight due to the flap position. Use this setting for flight once you have mastered the basic flight parameters.
The final setting is to remove the NACA droops. With these removed, you will find the T-34 very lively in its flight abilities while maintaining a very docile flight profile. Stalls in this configuration will routinely fall straight ahead and recover almost instantly. Inverted flight, loops, and rolls all are easily accomplished while maintaining the model’s quality scale appearance.
Usage Guidelines, Warnings and Safety Precautions • Li-Po batteries may explode if damaged or if disposed of improperly. • Lithium batteries can still ignite after at least 45 minutes due to a delayed chemical reaction. If battery is damaged or overheats, observe the battery in a safe area outside of any building or vehicle and away from combustible material. • Always inspect batteries before charging. • Do not allow children to charge Li-Po battery packs.
Swollen Batteries Immediately stop using or charging. If the battery is not warm to the touch, move it to an open safe area and observe it for at least 15 minutes. Be VERY CAREFUL when moving the batteries. Do NOT put ANY pressure on the batteries or covering as this may cause fire. Additional Information & Guidelines 1. Battery temperature the best indicator for safety.
Optional Items for Your T-34 Mentor Thunder Power 610 Charger As you have selected the world of electric power to begin your RC experience, we thought it would be good to show you some optional equipment that will help you grow and enjoy the world of electric flight. The equipment included with your T-34 ePTS works very well and will serve your needs without hesitation. All of the items shown in this section are available from your local hobby dealer.
Thunder Power 33003S battery The Thunder Power Extreme V2 battery is the highest quality, strongest power density battery in its class. This battery requires the Thunder Power 610 Charger listed in this section. Ask for part number #THP33003SXV2 at your local hobby dealer. E-flite T-34 Mentor ARF Assembly Manual E-flite 32003S battery The E-flite battery is a high quality replacement battery that can use either of the chargers listed in this section.
2008 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.
Building and Flying Notes E-flite T-34 Mentor ARF Assembly Manual 43
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