Related Manuals for Carf-Models Composite-ARF Extra 300L
Summary of Contents for Carf-Models Composite-ARF Extra 300L
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Page 1: Instruction Manual
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Instruction Manual Composite-ARF Extra 300L, 2.12m (84”) TAVS Technology version 1.0... -
Page 2: Liability Exclusion And Damages
Instructions for Extra 300L IMAC-Airplane Thank you very much for purchasing our Composite-ARF Extra 300L 2.12m (84” span) all com- posite aircraft, made with the revolutionary Total Area Vacuum Sandwich (TAVS) technology Please note that some photos in these instructions show our 2 x 2 Extra, which has almost iden- tical assembly in many areas (especially wings and stabs), but of course the colour scheme is different - so don’t get confused by this ! - Page 3 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Important Supplementary Notes Pre-Assembly Checks: At Composite-ARF we take every possible precaution to make sure that all our products are carefully checked before they leave the factory - but of course it is always possible that human error creeps in occasionally with high-volume production, and that an important part has been incorrectly installed or glued into position.
- Page 4 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com flying in the country of use. NO !!! The engine, servos and control surfaces have to be attached properly. Please use only the recommended engines, servos, propellers, and accessories. Make sure that the ‘Centre of Gravity’...
- Page 5 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com cloth, sandwiched between the outer skin and the foam. This nylon hinge is 100% safe and durable. You will never Centreline of hinge axis have to worry about breaking it, or wearing it out. There is...
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Page 6: Tools And Adhesives
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com the kit, not the standard screws normally supplied with ser- vos by the servo manufacturer. This is because all the holes in our milled servo mounts are 2mm diameter, due to our CNC manufacturing process, and this is too big for the normal screws. - Page 7 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com We take great care during production and Quality Control at the factory to ensure that all joints are properly glued, but strongly recommend that you double-check these yourself and re-glue any that might just have been missed. See ‘Pre-assembly’ notes on page 3.
- Page 8 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com A view of the complete Extra 2.12m (84”) kit contents - Product #721000 About the Extra 2.12m (84”) The Composite-ARF Extra 2.12m is far more pre-fabricated than our original 2 x 2 Extra. The fin post, rudder hinging, composite firewall and exhaust tunnel, wing and stab anti-rotation pins, wing fixing bolts, landing gear support..
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Page 9: Building Instructions
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Building Instructions General Tips: We recommend that you follow the order of construction shown in this manual for the fuselage, as it makes access to everything easier and saves time in the end. The first thing to do is protect the finished paint on the outside of the model from scratches and dents during building - so cover your work table with a piece of soft carpet, cloth or bubble-plas- tic. - Page 10 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Remove the carbon legs and open up the holes in the fuselage and ply supports to Ø 5.5mm. Refit the legs with the washers and M4 bolts, and install the T-nuts inside the fuselage. Secure the T-nuts to the ply mount with a little 30 min epoxy.
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Page 11: Cockpit Canopy
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Cockpit Canopy A painted moulded fibreglass canopy frame and clear cockpit canopy are provided in the kit. Fitting is quite simple, as the canopy is quite small and rigid. Complete all the canopy frame fixings before gluing in the clear canopy. - Page 12 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com with a little thick CA. Finally glue the phenolic ‘U- shaped’ plate under the slot in the fuselage ply plate and use this to adjust the final canopy fit at the front. Filing the slot at a slight angle to match the phenolic hook gives the final fine adjustment to make sure the front of the frame cannot lift up from the fuselage.
- Page 13 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com edges of the plate if necessary for a good fit in the fusleage. Mill and file the slot on the fuselage centerline, behind the canopy frame, for the handle of hatch catch. The slot should be 2.5mm wide x 15mm long, and the front of the slot about 20 - 22mm behind the front edge of the fuselage moulding.
- Page 14 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com overlap outside the line all around. Unless you are in a warm room, we recommend that the canopy is slightly warmed up with a hair dryer to prevent cracking - but be careful not to melt or...
- Page 15 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com position against the flange, with the flat side against the flange. Apply one drop of thick CA to each T-nut to hold in position, then remove the cowl carefully and secure properly with some 30 min.
- Page 16 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com the torque of a standard servo is not enough - it is the play in the gears which could cause prob- lems centering, and might result in high speed flutter. IMPORTANT - Servo Output Discs:...
- Page 17 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com horns are in identical positions in rela- tion to the hinge axis to give equal ele- vator movements. Put a layer of plastic parcel tape over the area of one of the the milled slots,...
- Page 18 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com inside the carbon tube. There is a small plywood reinforcing plate inside the stab that the bolts will pass thru’, and the centre of this is 100mm from the root. Apply some masking tape to the bottom of the stabs and mark the centre line of the stab tube on it.
- Page 19 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com least 86mm above the bottom of the fuselage to make sure that the pull-pull cables will clear the top of the stab servos. NB: We recommend that this servo mount is finally glued into the fuselage after completing the motor and fuel tank base installation, form easier access.
- Page 20 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Wings The wings are 95% finished at the factory, and have already been installed on your fuselage to check alignment. They fit on a 30mm Ø alumini- um alloy spar tube, with 6mm Ø fibreglass rod anti-rotation pins at the front and back, which are all completed for you.
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Page 21: Motor Installation
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com forget to allow for the extra thickness of the C- ARF servo horns that will be fixed onto the servo discs. You may need to make the slots in the servo hatch covers a little wider, by 1mm or so. - Page 22 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com one could possibly want ... and it has lots of ver- tical performance! There are many other gas engines that would be suitable, for example the Zenoah 38 or ZDZ 40, and ready-to-fly weight with these will be in the range of 6.7 - 7kg (15.5...
- Page 23 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com a horizontal line, 25mm from the bottom of the firewall, which is the centreline for the lower 2 bolts of the 2.5” (65mm) long standoffs. The DA-50 has vertical mount- ing centres of 66mm, and horizontal centres of 78mm, so mark another line 66mm above and parallel to the 1st line.
- Page 24 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com glass bulkhead sandwiched in between them, using the M6 bolts and T-nuts included in the kit, while the glue cures. This ensures that there are no air pockets in the firewall - especially where the standoffs will be positioned. Use a slow (at...
- Page 25 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com lage, the length is 175 - 180mm (7”) and the width should be 70mm (2.75”). Radius both ends of the cutout as shown. The dimensions of this slot can be adjusted to fit your chosen exhaust system as needed, within the overall size of the molded exhaust tunnel.
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Page 26: Glow Engine Installation
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Glow Engine Installation If fitting a 2-stroke or 4-stroke glow/methanol engine, for example OS140/160 or YS140/160, you can generally use the same techniques as shown above for the DA-50 (gas engine) set- up. Of course you will need to install either a solid F3A type ‘beam’ engine mount, or a ‘Hyde’... - Page 27 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com port is glued to top surface of the exhaust tunnel with a short piece of 1” glassfibre tape and lam- inating resin. The tank base is designed for fitting a Dubro 24 oz tank/700 ml (Part #424) and this is more than big enough, even for a DA-50.
- Page 28 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com ance and flying characteristics. The DA-50 pow- ered version shown here is about 7.1kg, dry. Of course, the final weight of your model will depend a lot on the power plant used, and if you decide to add any trim or paint to the model.
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Page 29: Final Check
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com ‘plane to achieve the correct Centre of Gravity, it is better to install a larger Nicad - rather then add lead. When using a gas engine we highly recommend a ‘Powerswitch’ for the ignition cut-off, which is available from C-ARF. - Page 30 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Have you put clear tape over the end of the rudder hinge wires and on the stab bolts ? Don’t forget to tighten the large Plastic M6 wing retaining nuts before flying! For added security add one small drop of loctite/thread locking compound on all engine mounting bolts, and those that hold the servo arms to the servos, especially important with digital types.
- Page 31 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Elevator high rate: 90mm (max.) Low rate should be no more than 30mm low rate: 30mm (1.25") both sides. This is the perfect throw for nice and crisp snaps. If you like you can add about 20% exponential to the low rate setting.
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Page 32: Hardware Pack
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com We hope that you enjoyed building your Extra 300L. Also let us know, if you think that any hard- ware is missing or inadequate. We have tried to make this airplane as complete as possible, and with good feedback from customers you will help us to continue making good things even bet- ter. -
Page 33: Available Accessories
Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com U-shaped plate for hook - phenolic (to attach canopy frame + 1 spare) Phenolic plate 15mm x 60mm (for canopy/cowling alignment tabs) Spring, Ø 4mm x 70mm long (to secure muffler to rear mount) Wing bag... - Page 34 Composite-ARF Extra 300L (2.12m/84”) techsupport@composite-arf.com Standard Wood parts included in the kit Fuselage hardware pack Wing hardware pack Stabilisers hardware pack Rudder hardware pack Standard Hardware included in the kit Version 1.0 - Mike C (18 May 2007) Mac...