CARL GOLDBERG 120 ARF Instructions Manual Download Page 28

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Bolt the main gear in place using the 4mm x

25mm screws.

Mount the axle to the landing gears.

Install the blind nut in the wheel pant using the

4-40 bolt to pull it into the hole.

Wheel Collars

Wheel Pant

Wheel

Landing Gear

Mount the wheel pant on the landing gear

along with the wheel collars and wheels.

Center the wheel on the axle.

Use the 4-40 x 1/2” bolt to hold the wheel

pant to the gear.

Be sure to use thread lock on the bolts.

TAIL WHEEL INSTALLATION

Tail wheel package includes mounting hard-

ware.

Mount the bracket on the rear of the fuselage

using the #4 x 1/2” screws. Install only the

rear on first.

Summary of Contents for 120 ARF

Page 1: ...s 5151 Memorial Drive Muncie IN 47302 1 800 435 9262 We suggest you join the AMA and become prop erly insured prior to flying this model Also consult with the AMA or your local hobby dealer to find an experienced instructor in your area Per the Federal Communications Commission you are required to use only those radio frequencies specified for Model Aircraft LIMITED WARRANTY Carl Goldberg Products...

Page 2: ...oam rubber 1 2 x8 x12 1 3 Spinner TOOLS AND SUPPLIES FOR ASSEMBLY MODELING OR UTILITY KNIFE WORK SURFACE 24 X70 ELECTRIC DRILL 1 16 5 64 3 32 1 8 5 32 1 4 DRILL BITS SMALL STANDARD PHILLIPS SCREW DRIVERS MASKING TAPE NEEDLE NOSE PLIERS 36 RULER OR TAPE MEASURE FLEXIBLE STRAIGHT EDGE T SQUARE 30 60 90 x 6 TRIANGLE SOFT PENCIL A FEW STRAIGHT OR T PINS ADJUSTABLE WRENCH WIRE CUTTER OPTIONAL HEAT GUN ...

Page 3: ...re One of the great advantages of film is that it can be applied over itself without causing gas bubbles This allows you to repair your aircraft as well as to customize it in a number of ways If due to a flight mishap you get a hole or similar covering damage simply trim away the ragged edges and then apply a patch following the direc tions that come with replacement film which is available at you...

Page 4: ...ory or an author ized service center should be done AT LEAST ONCE A YEAR as well as any time something unusual occurs dur ing usage A malfunction or glitch is the first sign of an impending failure it should not be ignored The checkup should include tuning and alignment of the system as well as battery testing ENGINE PROPELLER SELECTION When selecting an engine it is important to stay within the m...

Page 5: ... ommended Although they cost more initially they are more economical in the long run than frequently replac ing dry cell batteries FUEL For best engine performance use the fuel rec ommended by your engine s manufacturer 2 and 4 cycle engines require different fuel blends Ask your dealer to recommend a good quality fuel FUEL PUMP Needed to transfer fuel from the fuel can to the model s fuel tank A ...

Page 6: ...connects the servo with the control horn RTF Ready to Fly RIB the airfoil shaped piece that connects the leading edge spars and trailing edge of the wing together and holds them in shape RETRACTS devices for extending and retracting the wheels on command ROLL tilting of the plane as viewed from the front con trolled by the ailerons RUDDER the moveable vertical tail of the plane which controls yaw ...

Page 7: ...the aileron and the wing Install the flap in the same manner Align the stripes on the wing and make sure the aileron clears the tip and the flap 5 When satisfied with the alignment remove the straight pins being sure to keep the aileron and flap tight to the wing You may wish to apply a few pieces of masking tape to keep the pieces in place 6 Keeping the aileron flap and wing in posi tion apply 3 ...

Page 8: ...PORTANT To ensure that any connections located inside the wing will not come loose either when the wires are pulled and during flying always tape them securely together with electrical tape 3 Repeat these steps for the other half of the wing so that both servo extensions are exit ing the holes in the center of the wing 4 Mount the aileron and flap servos using the hardware supplied with the radio ...

Page 9: ...irst Run the tap through the control horn fitting also and screw into place Leave it flush with the top of the screw or one thread down 1 32 to provide the mechanical leverage needed Control Horn Fitting Bolt Nylon Nut Nylon Washer 6 Repeat for the other aileron and both flaps 6 Locate the 4 40 pushrods and thread a nut and a clevis with silicone keeper on one end The aileron pushrods are 1 4 long...

Page 10: ... dowel 1 Large aluminum tube 1 Small aluminum Tube 2 1 4 20 x 2 nylon bolts 2 Plywood reinforcement plate 2 Using epoxy mount the 8mm x 36mm alu minum dowels into the holes in the leading edge of the wing Make sure to leave about 1 2 of dowel sticking out of the front of the wing You may wish to slightly taper the exposed dowel ends for ease of insertion into the fuse holes 4 Insert the wing into ...

Page 11: ...centerline and make a mark on the masking tape 4 Place masking tape on the tip of the fuse just in front of the stab 5 Measure and mark the center point on the tape 6 Place a piece of masking tape on each wing tip just above the aileron hinge line Measure 35 out from the fuselage side to the wing tip and mark the spot on the tape on both the left and the right side of the wing CENTER JOINT CENTERL...

Page 12: ...gain checking the alignment of the stab to the wing allow the epoxy to dry thoroughly 11 As with the installation of the ailerons insert a straight pin in the center of each CA hinge Slide the hinges halfway into the elevator and then slide the entire assembly into the hinge slots in the stabilizer Allow the elevator stab assembly to dry for at least 10 minutes before flexing the elevator 12 Keepi...

Page 13: ...couple of spoonfuls of epoxy Apply a THIN even coat of epoxy on the bot tom of the fin and along both sides of the fin mounting posts Avoid too much glue which will squeeze out from underneath the fin Mount the fin on the fuse and place the trian gle against the fin to make sure it is perpen dicular Use masking tape to secure the fin and trian gle in position until the epoxy is thoroughly dry Make...

Page 14: ...f the fin along the leading edge 1 1 8 up from the bottom Measure carefully because if you get it too high on the rudder it will interfere with the elevator control horns It should be lined up with the exit holes in the side of the fuse lage Measure back from the leading edge 5 8 on this mark and drill a 9 64 hole Install the 3 1 2 threaded rod through the hole 3 Install a nylon flat washer on eac...

Page 15: ...rol horn on the end flush with the end of the bolt Screw the elevator pushrods into the control horn fittings Flying wire installation 1 Collect the following items 1 Braided cable 4 2 56 rigging couplers 4 2 56 clevis 4 Silicone clevis keepers 8 cable swages 8 metal cable brackets 3 2mm x 13mm bolts 3 2mm nuts 2 Take 6 of the metal brackets and grip 1 4 of the end with a pair of pliers and make a...

Page 16: ...hrough the swage Crimp the swage to lock the cable in place Repeat this for one end of each of the four cables 6 Put the silicone keeper on the clevis and screw the clevis onto the rigging coupler Screw in into the clevis until the coupler is flush with the opening in the center of the clevis Repeat for the other three cables 7 Attach the clevis of the two 14 1 2 cables onto the brackets on the to...

Page 17: ...nd fit through the bottom fuselage couplers and crimp in place Set up shown is for tail wheel 10 After all wires are in place adjust the tension using the clevises Adjust equally so as not to warp the surfaces The don t need to be guitar string tight just snug ...

Page 18: ...e end of the tube almost touches the top of the tank when installed 4 Install the 4mm silicone tube to the short brass tube and install the clunk to the other end of the silicone tube This is the fuel pick up and must be free to flop around in the tank so it can pick up fuel in any attitude Decide if you want to use a two line or a three line tank Most two strokes use a two line one to the carb an...

Page 19: ...ose gear blocks to the firewall with the 4 40 x 5 8 screws and the 4 washers Don t tighten the bolts until both blocks are in place and the nose gear is inserted in the holes This will hold the blocks in alignment while you tighten down the bolts Be sure to use locktite on the bolts 1 Gather the following items 4 4 40 x 5 8 socket head screw 4 4 washer 1 Nylon nose gear block 1 Nose Gear Wire 2 5m...

Page 20: ...eering arm and slide the rod into the nylon tube Insert the nose gear into the bottom block then into a wheel collar then into the steering arm and finally into the top block Push the nose gear flush with the top of the top block Tighten the set screw on the wheel collar and the steering arm 5 Install the nose wheel and secure with the other wheel collar 2 Install the mounts in the fuselage using ...

Page 21: ... location of the mounting holes and drill a 1 8 hole at each location Mount the engine using the 6 32 sheet metal screws Be careful and don t over tighten the screws they will break easily 4 Place the fuel tank in the fuselage and through the opening in the bulkhead and into the tank compartment and place the second 1 1 2 piece of foam on top of the tank 5 5 Cut the fuel tubing to reach the engine...

Page 22: ...n such as to fit a spinner It is equally important to use a correctly sized spin ner The CGP 4 pin spinner 3 1 2 for the Tiger 120 ARF is a rugged precision molded spinner which does not require any special mounting nuts or screws CAREFULLY READ THE SPINNER INSTRUCTIONS AND WARNINGS INCLUDED WITH THE SPINNER And remember although a spinner helps reduce the chance of injury from a rotating prop ext...

Page 23: ...vator pushrods to pull the rudder cable out the hole in the rear Insert the pushrod in the cable outlet and push for ward into the servo compartment Tape the rudder cable to the end and pull out the rear The cables will need to cross to make the nose gear work in the proper direction Repeat for the other side 6 Thread the other two 4 40 rigging couplers into the rudder control horns on the rear Ce...

Page 24: ...es and screw into the elevator horn brackets They should screw all the way into the clevis 3 Mount the two elevator servos using the hardware supplied with the radio The output arm should be forward 4 Install the silicone clevis keeper on the cle vis Screw a 4 40 nut on the pushrod then the clevis Attach the clevis to the servo arm Center the servo with the radio and adjust the clevis till the ele...

Page 25: ... throttle and open the throttle barrel fully Tighten the set screw to lock pushrod in place RECEIVER AND BATTERY INSTALLATION 1 Insert the Y harness into the the aileron plug in the receiver and then wrap both the receiver and the battery in the 1 2 foam 2 Push the receiver antenna into the nylon tube at the front of the servo tray antenna tube 3 The switch can be mounted on the side of the fusela...

Page 26: ...esire the tail dragger configuration go the the Landing Gear Installation in the Tail dragger Option section 4 Install the wheels on the axles as shown The wheel goes on first followed by the wheel collar and the set screw BALANCING THE MODEL IMPORTANT NEVER NEGLECT THIS STEP WITH ANY AIRPLANE If you try to fly a plane with the balance point behind the recommended range you run the risk of having ...

Page 27: ...as possible Fasten the weight per manently in place TAIL DRAGGER OPTION NOTE The tail dragger option is not recommended for novice pilots It is best to get plenty of practice with a tri gear before converting your Tiger 120 ARF into a tail dragger This option might require additional weight added to the nose of the plane to achieve the correct CG Balance The amount of weight you have to add depend...

Page 28: ...nt Wheel Landing Gear 5 Mount the wheel pant on the landing gear along with the wheel collars and wheels Center the wheel on the axle Use the 4 40 x 1 2 bolt to hold the wheel pant to the gear Be sure to use thread lock on the bolts TAIL WHEEL INSTALLATION 1 Tail wheel package includes mounting hard ware 2 Mount the bracket on the rear of the fuselage using the 4 x 1 2 screws Install only the rear...

Page 29: ...sides of the other wheel collar Install the assembly on the top of the axle bracket and tighten the set screw Make sure the threaded rods are parallel with the axle 5 Place the wheel on the axle and secure with the wheel collar spring fitting 6 If you have not installed the pushrod fitting for the tiller springs you will need to remove the rudder cables and screw them in place 7 Install the spring...

Page 30: ...ower take off for a short 2 to 3 minute first flight Before the second flight take off the wing and check all screws radio equipment engine mounting muffler etc to make sure that nothing has come loose Spend the following flights getting famil iar with your model and making sure it is properly trimmed for straight and level flight When you feel comfortable with your model it s time to try aerobati...

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