CURTISS JN-4 “JENNY” INSTRUCTION MANUAL Shown with optional gasoline engine, propeller and spinner. Specifications:* Wingspan ............................................................................. Upper wing – 1 0 5 inches (This is 20% of the original Jenny’s 43 feet 7¾ inch wingspan) Wing Area ..................................................................................... 1 , 7 6 0 square inches Length ..........................................................................................
Congratulations on your acquisition of Maxford USA’s version of the Curtiss JN-4 “Jenny” from World War I. The Curtiss JN-4 "Jenny" two-seat biplane was one of the most popular airplanes of all time. It was the first mass-produced airplane and was manufactured in larger numbers than any previous American airplane. By the time of the Armistice in 1918, well over 6,000 JN-4s had been built.
4. Check the operation of this model airplane before every flight to ensure that all equipment is still operating correctly and that the model has remained structurally sound. Also, before every flight check the clevises and other connectors; replace any found damaged or defective. 5. If you are not an experienced R/C pilot or have not flown this type of model before, we recommend that you get the assistance of an experienced R/C pilot. 6.
postage payable upon delivery.) Returned merchandise must be in its original condition as received from Maxford USA, with no assembly or modification, in the original packing materials, complete with all manuals and accessories. Return shipping and insurance charges must be prepaid by you, the buyer. 3. Returned merchandise that is accepted by Maxford USA for credit is subject to a 10% to 20% restocking fee.
ASSEMBLY INSTRUCTIONS NOTE: Numbers within brackets are the starting points for viewing the CD-ROM’s computer-video in [Minutes:Seconds]. 1. Unlatch, lift out and set aside the two(2) radio-compartment hatch covers. Remove and discard the wire ties at the bottom of the fuselage, then pull out from the fuselage and set aside the wooden engine-mounting box and the cardbaord box containing the cabanes and struts. 2.
9. Sight along the vertical stabilizer to the rudder and from the horizontal stabilizer to both elevators and make any necessary adjustments to the length and tension of each pull-pull cable to center the control surfaces and to ensure the rudder and both halves of the elevator are all at their ‘neutral’ position with their servos centered [06:22].
17. Pull the wire up through the control horn’s hole and bring it around the control horn; then insert the end of this wire into the predrilled hole at the bottom of the right side of the rudder [09:04]. 18. Bring together the wire’s two ends at the left side of the rudder, and slide a crimp tube onto these two loose ends. Insert the wire’s ends into opposite sides of the hole in the rudder’s left control horn.
23. Tie the open female end of each extension to the preinstalled string at each of the aileron servo openings in the top wing panels. Guide the end of each extension to the root rib of each wing panel [13:11]. 24. Using the servo manufacturer’s hardware, mount the aileron servos with their output shafts furthest away from the aileron hinge-line. 25.
32. Sharpen both ends of two(2) 54 cm (21¼-inch) carbon-fibre rods with sandpaper. Bend each rod and insert its ends into the two predrilled holes in the bottom of each lower wing panel roughly 7inches from the wing tips. Secure both ends of each “wing skid” with a few drops of CA adhesive [22:52]. 33. Identify and set aside the “22 mm dia. by 665 mm long” UPPER wing-joiner tube [23:32]. 34. Using care to not damage either windshield or the rudder, place the Jenny’s fuselage on its back.
40. Secure the landing gear to the fuselage using the preinstalled T-nuts, two supplied metal straps with 12 mm (7/16-inch) bolts in front of the wing, and three supplied straps with 15 mm (5/8-inch) bolts behind the wing. Place the Jenny right side up on its landing gear [27:41]. 41.
55. Attach four(4) large L-shaped wing-wire anchors to the top of the lower wing near each side of the fuselage by inserting two(2) 12 mm (7/16-inch) wood screws through each wing anchor and driving them securely into the predrilled holes. Apply CA adhesive to harden the holes in the wood where the screws are inserted. [32:31]. 20 mm (13/16-inch) Approximate hole locations as viewed at the right side of the fuselage.
61. Secure the lower ends of the four(4) cabanes to the fuselage by tightening each of the eight(8) self-locking nuts inside the fuselage. 62. Pointing the shanks of four(4) 12 mm (7/16-inch) bolts toward the center of the fuselage, insert each bolt fully through the top of each of the four(4) cabanes and the wing center section’s wooden cabane mounts. Tighten a self-locking nut onto each of the four(4) bolts at the top of each of the four(4) cabanes [34:57]. 63.
68. Prepare places to mount four(4) small L-brackets on the upper surface of the top wing by boring two(2) 1/16-inch holes approx. 3/16 inch apart and 3/16 inch deep in each of the upper wing’s four(4) preinstalled “hardwood islands” [38:45]. 69. Apply CA adhesive to harden the holes you bored in the wood where the small L-brackets are to be mounted. 70.
76. Install an approx.
78. Install an approx.
(Note: Adjust the following final steps in accordance with your engine & radio equipment setup preferences.) 80. The factory-installed firewall mounting-bolt pattern is 2 7/16-inch high by 3 1/32-inch wide. If this pattern 3 1/32 matches your engine, using the four(4) pre-installed inch blind-nuts inside the engine-mounting box, mount your engine (with its cylinder head and carburetor positioned 2 7/16 to fit inside the cowl) [56:24].
86. Install, connect and adjust the engine’s throttle and choke control linkages. 87. Connect the rudder and elevator servos to your radio’s receiver; attach an 18-inch servo extension to the radio receiver’s aileron channel; route the servo extension up through a cockpit, and connect the aileron extension to the aileron’s Y-cable. 88. Make any necessary additional engine access, exhaust and/or cooling openings in the cowl. 89. Install and attach your radio’s battery to the radio’s ON/OFF switch. 90.
Pre-Flight Checks: 1. Double-check the security of the engine-mounting box and firewall, and make certain that all screws, clevises and other connections throughout the air fram are secure. 2. Double-check the control directions of the, throttle, ailerons, elevator and rudder. 3. As with all radio-controlled model airplanes, this model must pass the radio range ground check recommended by your radio’s manufacturer, or you may not safely fly. 4.
