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Related Manuals for Fox Composites BAe Hawk
Summary of Contents for Fox Composites BAe Hawk
- Page 1 Fox Composites Co., Ltd. Fox Composites BAe Hawk April 2008 version: 1...
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Page 2: Liability Exclusion
Fox Composites Co., Ltd. Instruction Manual for BAe Hawk model airplane kit Thank you for purchasing the BAE Hawk kit (58"/147cm span) manufactured by Fox Composites. These instructions are available as a full-colour freely down-loadable Adobe Acrobat .pdf file from our website (www.fox-composites.com), and also on a CD-Rom in every kit box. - Page 3 240 grit, or red Scotchbrite pad. This will also remove any loose glass strands that might otherwise get into your hands! At Fox Composites we only use 1st quality slow (24hr) laminating epoxy mixed with micro-balloons, ZAP 30 minute epoxy (mixed with micro-balloons) and Hysol 9462 thixotropic epoxy for assembly and important joints, and can highly recommend these types.
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Page 4: Take Care
All control surfaces are now elastic-hinged for your convenience. Fox Composites reserve the right to make changes to the kit for reasons of improvement, or pro- duction reasons, so it is possible that your moulded parts or hardware might not look exactly as... -
Page 5: Equipment And Accessories
(by Paul Gray) on the internet at RCUniverse at: www.rcu- niverse.com/forum/m_5453789/mpage_1/key /tm.htm or just search for “Fox Composites”. Thrust Tube: You will need to supply a suitable thrust tube for your turbine. A good source of lightweight, well-designed, thrust tubes is Wren Turbines (www.wren-turbines.com). -
Page 6: Building Instructions
Fox Composites Co., Ltd. nosegear steering, as the larger gears (preferably metal) can handle any shock-loads better. Retract valves, etc., can normally use any mini servos of at least 2kg torque. Fuel System: A pair of fibreglass moulded conformal main tanks (approx. 875cc each) are in- cluded in the kit, which fit into the fuselage. - Page 7 Fox Composites Co., Ltd. Wing Joining The left and right wing panels are connected to- gether with a rectangular fibreglass rod (10 x 12 x 220mm long) and a Ø 7 x 90mm anti-rotation dowel at the trailing edge. The joined wing is attached to...
- Page 8 Fox Composites Co., Ltd. IMPORTANT: Wait a minute before joining the wing panels together - to make sure that the glue does not slowly push the joiners out of the wing they are glued into. In this case you will...
- Page 9 Fox Composites Co., Ltd. the wing root, in line with the air-flow during flight. This only a few degrees off the ‘ideal’ 90° to the hinge line of the ailerons, and is close enough that there is no noticeable binding or lost movement.
- Page 10 Fox Composites Co., Ltd. the clevise on the servo arm as close to the servo centre as possible, and the clevise on the elevator horn as far out from the elevator as possible - to maximise the mechanical advantage, whilst still ob- taining the maximum necessary aileron throws of 9mm up and down.
- Page 11 Fox Composites Co., Ltd. your transmitter and fit short servo arms now, at 90° to the servo case in the neutral position. Check that the milled mounts fit inside the wing (with the front edge against the spar) without being too tight, sand the U-shaped slots as necessary to fit your servos, and drill the holes for the mounting screws.
- Page 12 Fox Composites Co., Ltd. them into the flaps until the holes for the clevises are 7 - 8mm in front of the leading edge of the flap. Especially if you want to connect the servos together on a Y-lead and use a single channel it is important to have the horns in identical positions on both flaps.
- Page 13 Fox Composites Co., Ltd. Re-install the servos and linkages, not forgetting to ‘Loctite’ one clevise and add a locknut to the other end. The servo hatches can be held closed with small strips of clear tape. Some small triangles of thin ply or fi-...
- Page 14 Fox Composites Co., Ltd. Carefully sand and prepare the ply mounting plates, the fibreglass flanges and the surface of the wing spars where the plates will be glued. Glue in se- curely using a slow epoxy and micro-balloon mixture - making sure of good contact to the fibreglass and the wing spars at the front and back of the retract bays.
- Page 15 Fox Composites Co., Ltd. glued inside the edges of the retract bay keep them flush. You can use clear tape, or small screws, to 97mm hold the covers in position as shown. We have not designed this model to have any gear...
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Page 16: Horizontal Stabilisers
Fox Composites Co., Ltd. rearward-retracting nosegear you will have no problems set- ting the correct Centre of Grav- ity as you can fit the batteries right in the nose. If you chose to fit a more scale forward-re- tracting nosegear you may... - Page 17 Fox Composites Co., Ltd. Sand or file the 6 x 30mm long slot in the top of the raised part 25mm 30mm of the fuselage for access to the clevise connection now. This slot will be hidden by the rudder at neutral when it is in- stalled later.
- Page 18 Fox Composites Co., Ltd. When satisfied with the stab throws, remove the yoke and drill the hole in the top of it for the pin of your chosen clevise, keeping the hole at least 4mm from the edge of the fibreglass horn. We suggest that you use M3 or 4 x 40 UNC hardware for this im- portant control.
- Page 19 Fox Composites Co., Ltd. The stabilisers should be controlled by a full-size servo of minimum 8kg torque (eg: JR8311, 8411, or Futaba equiva- lent). We strongly advise fitting the best servo you can here, and a digital type of at least 8kg gives...
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Page 20: Fin And Rudder
Fox Composites Co., Ltd. Fin and Rudder The vertical fin and elastic- hinged rudder is laminated from a lightweight fibreglass and foam sandwich, cured under vacuum, and painted in the molds in a single colour. It has been fitted to your fuselage... - Page 21 Fox Composites Co., Ltd. of it. Wax or oil the M4 bolt thread, and pass the bolt thru’ the hole in the ply. Apply a little 5 minute epoxy to the edges of the ply plate, and then screw the bolt up into the T-nut in the fin from inside the fuselage.
- Page 22 Fox Composites Co., Ltd. Turbine, Fuel Tank & Thrust Tube Installation These 3 items are inter-depen- dant on each other and need to be installed together. The Hawk is designed for tur- bines of between 4.5 and 7kg thrust. We flew the prototype...
- Page 23 Fox Composites Co., Ltd. may need additional packers to centre it. We recommend that you sand the front of the mounting plates to fit the fuel tanks first, then fit and secure the thrust-tube, and finally adjust the spac- ing between the mounting plates and drill thru’ for the bolts to set the turbine position &...
- Page 24 Fox Composites Co., Ltd. model and therefore affect the safety during flight. When satisfied, drill for the 4 mounting bolts and 5 - 6mm glue the T-nuts to the top surface of the fibreglass flanges with the spikes pointing upwards, using epoxy and micro-balloons mixture.
- Page 25 Fox Composites Co., Ltd. All tanks are leak-tested at the factory, but we strongly recommend that you double-check them (below) Close-up of stopper assembly, before installing in your plane! Block one of the tubes with barbs soldered onto brass tubes.
- Page 26 Fox Composites Co., Ltd. Engine Hatch and Cockpit Canopy The main engine hatch and the internal canopy frame are both trimmed for you at the factory, and the balsa baseplate is fitted in the hatch, so you only need to complete the fixings.
- Page 27 Fox Composites Co., Ltd. and tape in place. With the fuselage upside down you can now mark the position of the slots you need to cut in the bot- tom surface of the hatch, and file them so that the milled 3mm plywood hooks fit in.
- Page 28 Fox Composites Co., Ltd. frame and tape/clamp firmly in position again, and drill thru’ the rear face of the canopy and the front face of the hatch to suit the pin diameter of your favourite style of hatch-catch. File the slot in the top...
- Page 29 Fox Composites Co., Ltd. very small countersunk self-tappers (eg: BVM ‘Poly- ply’ screws) so that the canopy is rigid, and cannot twist. Then you can carefully remove it from the fuse- lage and glue the edges from the inside. Carefully sand a narrow 5 - 6mm wide border all...
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Page 30: Nose Gear Installation
Fox Composites Co., Ltd. Nose Gear Installation These instructions describe the fitting of a rearward-retracting nosegear unit, which seems to be what most customers prefer, as it is much easier to install the steering mechanism - and also leaves the nose of the fuselage free to install batteries, air tanks etc.. In this case the supplied nosegear door is used as a hatch cover for the opening that is factory-cut in the fuselage. - Page 31 Fox Composites Co., Ltd. around the sides and back of the opening, projecting about 3mm inside the opening for the door to sit on, so that it will be flush with the outside surface of the fuselage. The door can be secured with a small ply-...
- Page 32 Fox Composites Co., Ltd. bulkheads. We temporarily tack-glued two 55mm long balsa spacers in between the rails to keep them square and parallel, while permanently gluing the rails in place with epoxy and micro-balloons. This gives enough space in between them for the nose...
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Page 33: Radio Installation
Cockpit Detail Set An optional cockpit detail set is available for the Hawk, consisting of vacuum-formed ABS parts. Please contact your dealer, or Fox Composites, for more information and availability. Radio Installation There is lots of space under the cockpit to fit any R/C system you wish - even if you chose to fit a cockpit detailing set. -
Page 34: Centre Of Gravity
Fox Composites Co., Ltd. have an air leak in the fuel system that needs to be resolved. Remember that it should always be full of fuel during flight, and so will have an affect on the CG position. Therefore make sure that it is at least 90% full of fuel when you make your final Centre of Gravity checks. - Page 35 Fox Composites Co., Ltd. No gyro is needed, but of course it’s always nice to have one on the rudder and nose-steering for cross-wind take-offs and landings. Ground angle: With the main and noseleg lengths shown in the manual, and same diameter wheels, the Hawk should have the close to the correct angle of incidence when fully fuelled on the ground.
- Page 36 My original ducted-fan Hawk had over 350 flights, and only crashed because of my own stupidity! I hope that your new Fox Composites Hawk has at least as long and happy life, and gives you as much fun as mine did.
- Page 37 Fox Composites Co., Ltd. Kit Contents Fuselage Hatch Cockpit frame (internal) Clear cockpit canopy Nose gear door Vertical Fin and Rudder Stabiliser (left) Stabiliser (right) Wing panel (left) Wing panel (right) Retract Cover (left) Retract Cover (right) Fuel tank (left) - included in Turbine version only...
- Page 38 Fox Composites Co., Ltd. Contents of Wood Parts bag Contents of Hardware bag Top and bottom views of the EDF version Hawk, show- ing the factory-fitted inlets, which suit standard 5 ” ducted-fan units, and EDF units such as ‘Turbax-E’ etc.
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