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F3A CONTRAST LT, Instruction Manual

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F3A CONTRAST LT Instruction Manual Download Page 3

3

 

 

Table of Contents 

 

 
Warning 

 

 

 

 

 

 

4  

1. Available options 

 

 

 

 

 

5 

 

1.1. White Series 

 

 

 

 

 

5 

 

1.2. Painted in Molds Series 

 

 

 

 

6 

 

1.3. Custom Series

 

 

 

  

 

8 

 

1.4. RTF Series

   

 

 

 

 

11 

2. Kit Contents

   

 

 

 

 

14 

3. Items Needed To Complete

 

 

 

 

15 

 

3.1. Required Tools and Adhesiv 

   

 

 

15 

 

3.2. Power System Selection 

 

 

 

 

16 

 

3.3. Servos Selection

 

 

 

 

 

18 

 

3.4. Radio Selection 

 

 

 

 

18  

4. Warranty Information   

 

 

 

19  

5. Model Assembly Process 

 

 

 

20  

5.1. Wings 

 

 

 

 

 

20 

 

5.1.1. Aileron control Horn Installation 

 

 

21 

 

5.1.2. Wing Servo Installation 

 

 

 

29 

 

5.2. Elevator 

 

 

 

 

 

31 

 

5.2.1. Elevator control Horn Installation 

 

 

32 

 

5.2.2. Elevator Servo Installation   

 

 

37 

 

5.3. Fuselage 

 

 

 

 

 

41 

 

5.3.1. Rudder and Rudder control Horn Installation  

41  

5.3.2.1 Canalizer installation 

 

 

 

45

 

5.3.2. Tail Wheel Installation 

 

 

 

47 

 

5.3.3. Landing Gear Installation 

 

 

 

50 

 

5.3.4. Engine mounting 

 

 

 

 

55 

 

5.3.5. Battery Tray Installation 

 

 

 

66 

 

5.3.6. Radio Equipment Installation 

 

 

74  

6. Balancing the Model/Control Throws 

 

 

77  

7. Mixing the Model 

 

 

 

 

77 

 

8. Preflight 

 

 

 

 

 

78 

 

Summary of Contents for CONTRAST LT

Page 1: ...1 F3A CONTRAST LT INSTRUCTION MANUAL Wing Span 1870 mm Lenght 1980 mm Wing area 60 dm Fly weight 4850 4950 g ...

Page 2: ...sional CONTRAST LT kit is the result of Sergey s 25 years experience in F3A world and his research in best F3A performances This innovative design combined with the extremely lightweight structure the full composite fuselage wings and stabs give the CONTRAST LT an impressive precision and smoothness at any airspeed and flight condition Before you get started building and setting up your aircraft p...

Page 3: ...Process 20 5 1 Wings 20 5 1 1 Aileron control Horn Installation 21 5 1 2 Wing Servo Installation 29 5 2 Elevator 31 5 2 1 Elevator control Horn Installation 32 5 2 2 Elevator Servo Installation 37 5 3 Fuselage 41 5 3 1 Rudder and Rudder control Horn Installation 41 5 3 2 1 Canalizer installation 45 5 3 2 Tail Wheel Installation 47 5 3 3 Landing Gear Installation 50 5 3 4 Engine mounting 55 5 3 5 B...

Page 4: ...ar safety goggles a particle mask and rubber gloves when grinding drilling and sanding this parts Vacuum the parts and the work area thoroughly after working with fiberglass and carbon fiber parts It is important to understand that RC Compositus Company is unable to monitor whether you follow the instructions contained in this instruction manual regarding the construction operation and maintenance...

Page 5: ...rsion of this high performance F3A plane The all white CONTRAST LT is the most economical version of this high performance F3A plane Kit includes Fuselage Chin Cowl Canopy Preinstalled Removable Rudder with installed Rudder gap Cover Preinstalled wings with cut Ailerons and installed Aileron gap Covers Preinstalled Stabilizers with hinged Elevators and installed Elevator gap Covers Preinstalled Co...

Page 6: ...t looks great in the air We kept the style similar to other typical F3A planes paint schemes but we paid attention really well not to overload it with too much colors and shapes Painted in Molds Series is highly prefabricated for you Only few hours of work will be needed to get Contrast LT ready to fly ...

Page 7: ...opy Preinstalled Removable Rudder Preinstalled wings with hinged Ailerons and installed Aileron gap Covers Preinstalled Stabilizers with hinged Elevators and installed Elevator gap Covers Preinstalled Composite Landing gears Preinstalled compost canalizer Wheel pants Carbon fiber Wing tube 25 mm Ø x 600 mm Hardware bag CNC milled carbon fiber parts bag Instruction manual English Decal set ...

Page 8: ... gear wheel pants and tail wheel assembly are already installed On fuselage seams on top and bottom are filled and repainted Every Custom Series design is airbrushed on white base airplane in very thin layer after it is clear coated sanded and polished On average there is about 1 1 5 20 30 grams weight increase in comparison to mold painted airplane Bottom of the wings and stabs will be also airbr...

Page 9: ...d preinstalled Fuselage Airbrushed and preinstalled Chin Cowl Airbrushed and preinstalled Canopy Airbrushed and preinstalled Removable Rudder Airbrushed and preinstalled wings with hinged Ailerons and installed Aileron gap Covers ...

Page 10: ...nstalled Elevator gap Covers Preinstalled Composite Landing gears Airbrushed Wheel pants Carbon fiber Wing tube 25 mm Ø x 600 mm Hardware bag Custom made protection bag set fuselage wings stabs CNC milled carbon fiber parts bag Instruction manual English Custom Decal set ...

Page 11: ...dwich parts are extremely strong but fragile at the same time Always keep in mind that Contrast LT designed for minimum weight and maximum strength in flight Please take care of it especially during transport to make sure that none of the critical parts and linkages are damaged Always handle your airplane with great care especially on the ground and during transport so we offer to you custom made ...

Page 12: ...led Stab with hinged Elevator right 1 Preinstalled Stab with hinged Elevator left 1 Preinstalled Composite Landing gear right 1 Preinstalled Composite Landing gear left 1 Preinstalled composit canalizer 1 Wheel pant right 1 Wheel pant left 1 Carbon fiber Wing tube 25 mm Ø x 600 mm 1 Aluminum Stab tube 10 mm Ø x 200 mm 1 Custom made protection bag set 1 CNC milled carbon fiber parts bag 1 Instructi...

Page 13: ...d Darbon fiber or composit fiber elevator control horn 4 Ball Link M2 4 Bolts M2x15 4 Nuts M2 4 Threaded coupler M2 Rudder Pack Pcs Description 2 CNC milled carbon fiber or composit fiber rudder control horn 2 Pull Pull Cables 0 6 mm Ø 2 metres each 4 Brass swag tube 2 mm Ø 4 Ball Link M2 4 Bolts M2x15 4 Nuts M2 Landing gear Pack Pcs Description 2 Main wheels 65 mm Ø 1 Tail wheel 28 mm Ø assembly ...

Page 14: ...ll blow back into your eyes Always wear safety goggles or safety shield a particle mask and rubber gloves when grinding drilling and sanding this parts Wear safety goggles or safety shield Wear particle mask Wear rubber gloves Vacuum the parts and the work area thoroughly after working with fiberglass and carbon fiber parts Tools Felt tip Marker or Pencil Sander Ruler Metric and Standard Course an...

Page 15: ...oxy filler Thread Locker Acetone Alcohol swabs or Rubbing alcohol Paper or plastic caps Wooden coffee spoons Cotton buds Required Hardwares Main LiPo pack Receiver LiPo pack Receiver Speed controller Brushless motor Carbon Propeller Receiver voltage regulator Servo arms Servo Extension leads Servos ...

Page 16: ...to speed controller or Castle Creations 110 PT model 20 x 12 WE Carbon Propeller One 1 10 S 40C 4000 mAh H Energy LiPo pack or two 2 5 S 40C 4000 mAh H Energy LiPos Lightweight Setup Lightweight Setup allows reach total weight of RTF plane in range below 4600 4700 grams AXI model motors AXI 5325 18 GOLD LINE brushless motor Jeti Spin 99 Opto speed controller or Castle Creations 110 PT model 20 x 1...

Page 17: ...17 Lightweight setup Power Box System Digi Switch up to 12 A One 1 2 S 25C H Energy LiPo with capacity from 450 mAh to 600 mAh ...

Page 18: ... Gear Servo 8 9 5 kg cm Rudder one 1 Digital High Torque Servo 18 24 kg cm Make sure you use same or equivalent torque servos that are digital Please do not risk your plane by using low torque or analog servos Using of weak servos will increase chance of flutter and will reduce the accuracy of the airplane flight 3 4 Radio Selection For Contrast LT we recommend use minimum 6 channel 2 4 GHz comput...

Page 19: ...s with the model within 30 days of receiving your airplane to be covered under warranty If you wish to return this aircraft for any reason a 20 restock fee will be charged to the customer In addition the customer is responsible for all return shipping cost and all prior shipping cost will not be refunded Parts will be exchanged or replaced once the original item is returned at the owner s expense ...

Page 20: ...ge cloth sandwiched between the outer skin and the foam This nylon hinge is 100 safe and durable You will never have to worry about breaking it or wearing it out There is no gap at all on the top wing surface From the bottom of the aileron aileron gap are covered with glass fiber seal Because the axis of the hinge is not at the centerline of the aileron so it moves slightly in and out when operate...

Page 21: ...21 5 1 1 Aileron control Horn Installation Use 15 30 minute epoxy to ensure adequate working and cleanup time ...

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Page 29: ...5 1 2 Wing Servo Installation There are two options for mounting the servos inside the wing outside the wing To achieve better aerodynamic quality and model look we recommend that you use the first option ...

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Page 31: ...rocess with a 3 mm carbon or aluminum anti rotation axis at the front In order to increase the stability of inverted flight also to offer more finite control in rolling maneuvers the model can be equipped with downward dihedral with any angle from 1 to 5 degree or straight stabilizer Negative angle dihedral stabilizer 5 degree Because the axis of the hinge is not at the centerline of the elevator ...

Page 32: ...32 5 2 1 Elevator control Horn Installation Use 15 30 minute epoxy to ensure adequate working and cleanup time ...

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Page 37: ...s inside the elevator halves 2 servos on fuselage sides 1 servo Inside the fuselage with common elevator shaft and one servo In order to reduce the weight of the model also to reduce the inertia of the tail and achieve best model flight characteristics we recommend that you use the last option ...

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Page 41: ...irex foam sandwich form a hard and durable outer skin The complete front of the fuselage is reinforced with an additional layer of carbon cloth from the LG supports forward to the nose ring 5 3 1 Rudder and Rudder control Horn Installation The rudder is hinged with a 2 mm steel wire fitted through factory installed bearing plates for perfect alignment ...

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Page 45: ...45 5 3 2 1 Canalizer installation ...

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Page 47: ...47 5 3 2 Tail Wheel Installation There is a balsa plate already glued into the fuselage floor ...

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Page 50: ...ry installed carbon reinforced plywood mount Landing gear comes drilled and ready to install but you still need to drill the holes for the axles and wheel pants If you have any problems inserting the bolts through the landing gear to the mount please re drill through the existing holes to make sure that there is no debris in the holes Assemble the gear using provided axles or equivalent to keep th...

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Page 55: ...s AXI 5325 24 GOLD LINE brushless motor If fitting a gas or glow motor with a short header and muffler without tuned pipe it is most likely that the completed aircraft will be nose heavy so plan to mount all the other items batteries receiver elevator servos etc as far back as possible Included in the kit is a carbon firewall for AXI model motors 5330 F3A AXI 5325 24 and AXI 5325 18GOLD LINE brush...

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Page 66: ...66 5 3 5 Battery Tray Installation ...

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Page 74: ...74 5 3 6 Radio Equipment Installation The plane can be ordered with two types of servo trays One servo version ...

Page 75: ...75 Two servo version ...

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Page 77: ...andard angle of attack Left wing 0 0 degree Rigts wing 0 0 degrees Left stabilizer 0 0 degree Rigts stabilizer 0 0 degree Rekomend setup Rudder High 12 7 cm each direction 48 expo I use this for all flying Rudder Medium 88 each direction 36 expo I use this for some snaps Rudder Low 80 each direction 33 expo I rarely use this rate mostly from friends that fly the plane and do not like sensitive rud...

Page 78: ...xpo I use this for all normal flying and most snaps Stabilizer angle adjustment Wing angle adjustment 8 Mixing the Model For best performance we recommend to use a linear mixing Aileron and elevator throws measured in degrees and mm at widest point of the aileron rudder and elevator Mixing Throttle to Elevator Idle 2 down elevator approximately 0 7mm 10 0 91 0 Full 1 down elevator approximately 0 ...

Page 79: ...ron 0 full right rudder 6 right aileron 9 Preflight Pre Flight checks are just as important for any RC airplanes as they are for full scale airplanes There are very much things that could go wrong during a flight It is critical that you check everything twice to minimize the risk of crashing your expensive and carefully constructed airplane Step 1 Check CG is set properly It is always a good idea ...

Page 80: ...st be rigid and tight and have no slop Step 6 The engine vibrations during flight sometimes cause bolts to vibrate loose Make sure the bolts holding the wing to the fuselage are in place and are tight Make sure all engine mounting bolts and servo screws are tight Also make sure the propeller nut is tight Check all control horn bolts wheel collars are tight and secure Use Thread Locker where necess...

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