MS: SEA 71 ASSEMBLY MANUAL “Graphics and specfications may change without notice”. Item code : 71 Specifications Wingspan------------------------------------- 70.9 in---------------------------- 180cm. Wing area-------------------------------------945.5 sq.in------------------- 61 sq.dm. Approximate flying weight-------------- 10.6 - 11.5 lbs----------------4.8-5.2kg. Length-------------------------------------------- 61.3 in------------------------- 155cm. Recommended engine size--------------1.6 cu.
SPARROW HAWK Instruction Manual INTRODUCTION. Thank you for choosing the SPARROW HAWK ARTF by SEAGULL MODELS. The SPARROW HAWK was designed with the intermediate/advanced sport flyer in mind. It is a scale airplane which is easy to fly and quick to assemble. The airframe is conventionally built using balsa, plywood to make it stronger than the average ARTF , yet the design allows the aeroplane to be kept light. You will find that most of the work has been done for you already.
www.seagullmodels.com NOTE: To avoid scratching your new aeroplane we suggest that you cover your workbench with an old towel. Keep a couple of jars or bowls handy to hold the small parts after you open the bags. Please trial fit all parts. Make sure you have the correct parts and that they fit and are aligned properly before gluing! This will ensure proper assembly as the SPARROW HAWK is made from natural materials and minor adjustments may have to be made.
SPARROW HAWK Instruction Manual 5) Turn the wing panel over and deflect the aileron in the opposite direction from the opposite side. Apply thin C/A glue to each hinge, making sure that the C/A penetrates into both the aileron and wing panel. 6) Using C/A remover/debonder and a paper towel, remove any excess C/A glue that may have accumulated on the wing or in the aileron hinge area. 7) Repeat this process with the other wing panel, securely hinging the aileron in place.
www.seagullmodels.com Thread locker glue. Balsa wood. Silicon tubing not inclued. Vent tube. INSTALLING THE STOPPER ASSEMBLY. 1) Using a modeling knife, carefully cut off the rear portion of one of the 3 nylon tubes leaving 1/2” protruding from the rear of the stopper. This will be the fuel pick up tube. 2) Using a modeling knife, cut one length of silicon fuel line. Connect one end of the line to the weighted fuel pick up and the other end to the nylon pick up tube.
SPARROW HAWK Instruction Manual INSTALLING THE BATTERY. Battery. Attach the silicone fuel and pressure pipes to the tank. The lower pipe is the ‘feed’ and the upper two the ‘pressure and fill’. The fill pipe is the next pipe. You should mark which tube is the vent and which is the fuel pickup when you attach fuel tubing to the tubes in the stopper. Once the tank is installed inside the fuselage, it may be difficult to determine which is which. THROTTLE SERVO ARM INSTALLATION.
www.seagullmodels.com 4) Remove the engine. Using an drill bit, drill the mounting holes through the engine mount at the four locations marked. Trim and cut. 3 x 15mm. 150mm. Trim and cut. 5.2mm. Trim and cut. Pushrod wire. Machine Screw 5x35mm. 5) Bolt the engine to the engine mount using the four machine screws. Double check that all the screws are tight before proceeding. 2) While keeping the back edge of the cowl flush with the marks, align the front of the cowl with the crankshaft of the engine.
SPARROW HAWK Instruction Manual THROTTLE-ELEVETOR-RUDDER SERVO INSTALLING. Because the size of servos differ, you may need to adjust the size of the precut opening in the mount. The notch in the sides of the mount allow the servo lead to pass through. 1) Install the rubber grommets and brass collets onto the throttle servo. Test fit the servo into the aileron servo mount. 3) Install the muffler and muffler extension onto the engine and make the cut out in the cowl for muffler clearance.
www.seagullmodels.com INSTALLING THE SWITCH. Install the switch into the precut hole in the side of the fuselage. Using a small weight (Weighted fuel pick-up works well) and string, feed the string through the wing as indicated. Small weight. Small weight. String. String. Switch. Attach the string to the servo lead and carefully thread it though the wing. Once you have string the lead throught the wing, remove the string so it can use for the other servo lead.
SPARROW HAWK Instruction Manual 1) Aileron control horn: Mix a small amount of 30 minute epoxy and lightly coat the inside of the hole in the aileron and the 3x45mm control horn screw. String. Wing. Aileron. 2) Thread the screw (insert the washer) into the hole from the top of surface. Wipe away any excess epoxy on the wing and screw with rubbing alcohol and a paper towel. Screw the M3 nut (insert the washer) in place as shown. Alllow the epoxy to fully cure. Pull. Electric wire. Pre-drill at factory.
www.seagullmodels.com AILERON PUSHROD INSTALLATION. Aileron pushrods assembly follow pictures below. INSTALLING THE MAIN GEAR WIRES. 3 x 15mm. Pushrod L= 114mm. M3 lock Metal Levis. Center the servo using the radio system. Support mounting block. 1) Using a modeling knife, remove the covering from over the two main gear mounting slots located in the bottom of the wing. 2) Insert the 90º bend of one main gear wire and support mounting block into the predrilled hole in one mounting slot. Pen.
SPARROW HAWK Instruction Manual Support mounting block possition. Remove covering. 1.5mm. 1.5mm. Epoxy glue. 3) The landing gear wire is held in place using two nylon landing gear straps and four 3mm x 15mm wood screws. The straps should be located equal distance from the inside and outside ends of the wire. 4) Using the two landing gear straps as a guide, mark the locations of the four 3 x 15mm mounting screws onto the wing surface. 5) Remove the two straps and the gear wire. Drill four 1.
www.seagullmodels.com WING ASSEMBLY. NOTE: We highly recommend using 30 minute epoxy as it is stronger and provides more working time, allowing the builder to properly align the parts. Using fast cure epoxy when joining the wing halves could result in the glue drying before the wing halves are aligned properly which may result in failure of the wing centre section during flight. 1) Test fit the wing tube into each wing half. The brace should slide in easily up to the centreline that you drew.
SPARROW HAWK Carefully slide the two wing halves together and firmly press them together, allowing the excess epoxy to run out. There should not be any gap in the wing halves. Use rubbing alcohol and a paper tower to clean up any excess epoxy. Instruction Manual Remove the covering. Apply masking tape at the wing join to hold the wing halves together securely. Fill epoxy. Remove the covering. Masking tape. 3) Peel off the backing from the self adhesive covering strip.
www.seagullmodels.com 4) Slide the two horizontal fin halves together and carefully align them at the possition on the fuselage. Wipe away any excess epoxy using paper towels. Hinge. C/A glue. Hinge. Covering strip. C/A glue. Epoxy. Epoxy. INSTALLING HORIZONTAL FIN. 1) Remove the covering as same as pictures shown below. 2) Sand the aluminium tube using sandpaper. This will improve the bond of the epoxy to the cardboard horizontal fin.
SPARROW HAWK Instruction Manual 2) Elevator pushrods assembly follow pictures below. Right side. Pushrod L= 210mm. 3.2mm. Elevator control horn. M3 lock Metal Levis. RUDDER CONTROL HORN INSTALLATION. Rudder control horn: Using the same tectniques used aileron control horn. See picture below. control horn. Elevator pushrod. RUDDER PULL - PULL CABLE SYSTEM. See pictures below. ELEVATOR PUSHROD INSTALLATION. 1) Thread one clevis and M3 lock nut on to each elevator control rod.
www.seagullmodels.com MOUNTING THE TAIL WHEEL. See picture below. M3 lock nut. Cable wire. M3 x10 mm. 3x25mm. 3x25mm. With the radio on, check the operation of the rudder. Adjust the cables so when the rudder servo is centered, the rudder is centered as well. There will be tension on the cables. Adjustments can be made at the rudder control horn and at the servo arm.Once adjustments are made, secure the servo arm to the rudder arm servo using the screw that came with the servo. Spring. Right side.
SPARROW HAWK Instruction Manual INSTALLATION PILOT. Receiver. Tie Wrap. 2 x8 mm. 10 mm. Silicon glue. Antenna. ATTACHMENT WING - FUSELAGE. Machine screw 2 x 8mm. Bolt the wing to fuselage. Wing bolt. Silicon glue. INSTALLING THE RECEIVER. 1) Plug the servo leads and the switch lead into the receiver. Plug the battery pack lead into the switch also. 2) Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration.
www.seagullmodels.com 2) If the nose of the plane falls, the plane is nose heavy. To correct this first move the battery pack further back in the fuselage. If this is not possible or does not correct it, stick small amounts of lead weight on the fuselage sides under the horizontal stabilizer. If the tail of the plane falls, the plane is tail heavy. To correct this, move the battery and receiver forward or if this is not possible, stick weight onto the firewall or use a brass heavy hub spinner hub.
SPARROW HAWK 6) Check to ensure the control surfaces are moving the proper amount for both low and high rate settings. 7) Check the receiver antenna. It should be fully extended and not coiled up inside the fuselage. Instruction Manual 8) Properly balance the propeller. An out of balance propeller will cause excessive vibration which could lead to engine and/or airframe failure. We wish you many safe and enjoyable flights with your SPARROW HAWK . FOR USA MARKET ONLYLY.
www.seagullmodels.com Inspection or Repairs If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA). Pack the Product securely using a shipping carton. Please note that original boxes may be included, but are not designed to withstand the rigors of shipping without additional protection.
