T-34 Mentor 25e ARF Assembly Manual Specifications Wingspan: Length: Wing Area: Weight w/o Battery: Weight w/Battery: 55.0 in (1575mm) 44.0 in (1110mm) 545 sq in (34.9 sq dm) 4.40–4.50 lb (1.90–2.00 kg) 5.00–5.25 lb (2.20–2.
Table of Contents Introduction............................................................ 2 Important Warranty Information............................... 2 Using the Manual.................................................... 2 Product Registration................................................ 2 Contents of Kit/Parts Layout..................................... 2 Covering Colors...................................................... 2 Note on Lithium Polymer Batteries............................
Recommended Radio Equipment You will need a minimum of a 4-channel transmitter, receiver and four servos. You can choose to purchase a complete radio system. If you are using an existing transmitter, just purchase the other required equipment separately. We recommend the crystalfree, interference-free Spektrum™ DX6i 2.4GHz DSM® 6-channel system. If using your own transmitter, we recommend the JR SPORT™ ST47 servos.
Horizontal and Vertical Fin Installation Required Parts Fuselage assembly Horizontal stabilizer Vertical stabilizer Nylon control horn (2) 4-40 locknut (2) #4 washer (2) #2 x 1/2-inch self-tapping screw (2) Aft tail cone 2. Break in the hinges for the stabilizer by flexing it through its range of motion a few times. This will make it easier for the servo to operate for your first flights. 3. Thread a nylon control horn on the threaded control horn screw of the elevator.
5. Use a #1 Phillips screwdriver to remove the rudder control horn. 6. Using a #1 Phillips screwdriver, remove the long silver screw from the control horn collar. Thread a nylon control horn on the screw until it is 1/4-inch (6mm) from the head of the screw head as shown. Thread the screw back in the collar. 7. Insert the threaded rods from the fin through the holes in the fuselage and stabilizer. You may need to position the stabilizer to accomplish this step. 8.
11. Use a #1 Phillips screwdriver to tighten the control horn screw. Reposition the nylon control horn if necessary so it faces the front of the fuselage so the rudder pushrod can be connected. 13. Use a #1 Phillips screwdriver to install the two #2 x 1/2-inch self-tapping screws that secure the aft tail cone to the rear of the fuselage.
2. Use medium CA to glue the plywood servo plates in position for the rudder and elevator servos. Make sure to align the plates with the openings before the CA can cure. The servo openings in the servo tray are designed to fit the E-flite servos that come with the RTF version of the model. The plywood plates are necessary for the installation of standard servos. 3. Use a #1 Phillips screwdriver to thread a servo mounting screw into each of the eight holes in the servo tray.
8. Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the holes in the servo arm that are 1/2inch (14mm) and 3/4-inch (20mm) from the center of the HD servo horn. 9. Insert the brass pushrod connector in the hole that is 1/2-inch (14mm) from the center of the servo horn. Use a nylon pushrod connector backplate to secure the connector. 11. Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the hole on the elevator servo horn that is 1/2-inch (13mm) from the center of the horn. 12.
13. Slide a pushrod keeper on the wire from the underside of the servo arm. Swing the connector around and snap it on the pushrod wire to secure the wire and servo horn. You may need to use pliers to snap the keeper on the wire. 15. Slide a silicone keeper on the clevis and thread the clevis on the elevator pushrod wire. With the elevator servo centered, connect the clevis to the nylon control horn. The elevator must align with the stabilizer. If not, adjust the clevis so it does.
2. Attach the nylon steering arm to the nose gear wire. Insert the bend in the wire through the middle hole of the steering arm. 4. The nose gear assembly has a flat area where the screw in the steering arm will rest. Make sure this faces forward when the nose gear assembly is installed. Always use threadlock on metal-to-metal fasteners to prevent them from vibrating loose. 6. With the rudder servo centered, align the nose wheel parallel to the fuselage center line.
Motor and Speed Controller Installation Required Parts Fuselage assembly Motor with hardware Speed control Hook and loop tape Radio system Battery 3mm x 15mm socket head screw (4) Motor standoff, 3/8-inch (5mm) 2. Attach the motor to the firewall using four 3mm x 15mm socket head screws. Use a 2.5mm hex wrench or ball driver to tighten the screws. Note the different position of the mount in relationship to the firewall for the Power 25 and Power 32. 3.
Cowling and Spinner Installation 5. Use hook and loop tape to secure the speed control to the side of the fuselage. 2. Slide the propeller adapter on the motor shaft. 3. Slide the spinner backplate on the propeller adapter. It may be necessary to enlarge the hole in the spinner backplate using a tapered reamer if it does not fit on the propeller adapter.
4. Slide the propeller on the adapter. It may be necessary to enlarge the hole in the propeller using a tapered reamer if it does not fit on the propeller adapter. Before tightening the spinner nut, make sure there is a gap between the backplate and cowl so they do not rub when the motor is running. 6. Check the fit of the spinner cone on the backplate. There should be an equal gap between the propeller and the opening for the propeller in the spinner backplate.
Aileron Servo Installation B. Slide the propeller on the adapter. It may be necessary to enlarge the hole in the propeller using a tapered reamer if it does not fit on the propeller adapter. Before tightening the spinner nut, make sure there is a gap between the backplate and cowl so they do not rub when the motor is running. D. Use the screw provided with the spinner to secure the spinner cone. Use a 3/32-inch hex wrench or ball driver to tighten the screw.
3. Tie the string located inside the wing to the end of the servo lead. Pull the servo lead through the wing and out the hole in the top sheeting. 4. Use a pin vise and 1/16-inch (1.5mm) drill bit to drill the four holes for the servo mounting screws. E-flite T-34 Mentor 25e ARF Assembly Manual 5. Use 2–3 drops of thin CA to harden the holes drilled in the previous step. 6. Use the screws provided with the servo and a #1 Phillips screwdriver to secure the servo in the wing.
9. Slide a silicone keeper on the clevis, then thread the clevis on the linkage wire. With the aileron servo centered, attach the clevis to a hole on the servo horn that is 1/2-inch (13mm) from the center of the horn. Adjust the linkage so the aileron is aligned with the wing tip when the aileron servo is centered. Fixed Flap Installation 3. Slide on two silicone keepers and thread the two nylon clevises on the flap linkage. Thread each clevis 10 turns as a start. 4.
5. Connect the linkage to the nylon control horn. Adjust the clevis so the flap is aligned with the trailing edge of the wing as shown. Flap Servo Installation Required Parts Wing panel (left) Flap linkage Pushrod keeper Radio system Battery Nylon control horn Nylon clevis (2) Servo with hardware Silicone keeper (2) 3. Prepare the flap servo by installing the grommets and brass eyelets. Pass the servo lead through the hole inside the wing, then through the hole in the top of the sheeting.
3. Place the servo in the opening. Use a pin vise and 1/16-inch (1.5mm) drill bit to drill the four holes for the servo mounting screws. 4. Place 2–3 drops of thin CA into each of the holes to harden the surrounding wood. 18 5. Use the screws provided with the servo and a #1 Phillips screwdriver to secure the flap servo in the wing. Make sure the output of the servo faces to the leading edge of the wing. 6. Slide a silicone keeper on and thread the two nylon clevises on the flap linkage.
9. Use the flap adjustment of your radio system to set the FULL FLAP position. The measurement for full flap is 1/2-inch (13mm). Joining the Wing Panels 3. Slide the 5/32 x 13/16-inch (4mm x 30mm) aluminum pin in the wing panel in the socket near the trailing edge of the wing as shown. 4. Slide the wing panels together. They will fit tightly together as shown in the second photo.
5. Use two 3mm x 12mm self-tapping screws and a nylon strap to secure the panels together. Holes have been pre-drilled for the screws. Make sure to place 2–3 drops of thin CA into the holes before starting the screws. Use a #1 Phillips screwdriver to tighten the screws. Main Landing Gear Installation Required Parts Wing assembly Nylon strap (4) Main landing gear (2) 3mm x 12mm self-tapping screw (8) 2.
Final Assembly Control Throws Required Parts Fuselage assembly Canopy hatch Wing assembly Nylon wing bolt (2) 1. Turn on the transmitter and receiver of your model. Check the movement of the rudder using the transmitter. When the stick is moved right, the rudder should also move right. Reverse the direction of the servo at the transmitter if necessary. 2. Check the movement of the elevator with the radio system.
Aileron Low Rate Up 1/4-inch Down 1/4-inch (6mm) (6mm) Aileron High Rate Up 1/2-inch Down 1/2-inch (13mm) (13mm) Elevator Low Rate Up 3/8-inch Down 3/8-inch (9.5mm) (9.5mm) Elevator High Rate Up 3/4-inch Down 3/4-inch (20mm) (20mm) Rudder Low Rate Left 3/4-inch Right 3/4-inch (20mm) (20mm) Rudder High Rate Left 3/4-inch Right 3/4-inch (20mm) (20mm) Center of Gravity An important part of preparing the aircraft for flight is properly balancing the model.
Flying Your T-34 Mentor Age Requirements Your T-34 Mentor 25e ARF has been designed with Age Recommendation: 14 years or over. This is not performance in mind for spirited aerobatics while still a toy. This product is not intended for use by children without direct adult supervision. maintaining gentle stall characteristics in slow flight. After plugging in your battery taxi out onto the runway Safety Do’s and Don’ts for Pilots and line up on the center line.
Glossary of Terms Ailerons: Each side of this airplane has a hinged control surface (aileron), located on the trailing edge of the wing. Move the aileron stick on the transmitter left, the left aileron moves up and the right aileron moves down. Moving the left aileron up causes more drag and less lift, causing the left wing to drop down. When the right aileron moves down, more lift is created, causing the right wing to rise. This interaction causes the airplane to turn or roll to the left.
Damage Limits HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. Further, in no event shall the liability of Horizon exceed the individual price of the Product on which liability is asserted.
United Kingdom: Electronics and engines requiring inspection or repair should be shipped to the following address: Horizon Hobby UK Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS United Kingdom Please call +44 (0) 1279 641 097 or e-mail us at sales@horizonhobby.co.uk with any questions or concerns regarding this product or warranty.
8. I will not operate model aircraft carrying pyrotechnic devices which explode burn, or propel a projectile of any kind. Exceptions include Free Flight fuses or devices that burn producing smoke and are securely attached to the model aircraft during flight. Rocket motors up to a G-series size may be used, provided they remain firmly attached to the model aircraft during flight.
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