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Items required to complete this model: 

 

 

26-38 cc gas engine with stock or aftermarket 
exhaust system 

 

Appropriate propeller for your engine 

 

All the required engine and exhaust mounting 
hardware 

 

Ignition battery and switch 

 

One quality throttle servo and appropriate 
servo arm 

 

3 high quality metal gear servos of 80 in-oz or 
better for the ailerons and elevators 

 

One high quality rudder servo of 160 in-oz or 
better 

 

Appropriate servo arms for the above 

 

Servo wire extensions. Recommend  KUZA 
Twisted 22 AWG Servo Extensions (Not 
included) 
Two to three 12”(305mm) No. KAG002522                        
Two to three 18”(455mm) No. KAG002523 

 

Switches with charging jacks for the Rx 

 

Rx batteries of significant capacity to power 
your choice of servos.  

 

Receiver of your choice 

 

Required tools 

 

Covering Iron and heat gun 

 

Assortment normal hobby tools such as 
screwdrivers, hobby knife, drill and drill bits, 
pliers, etc.   

 

Thick and thin CA adhesives 

 

30 minute epoxy 

 

Isopropyl alcohol 

 

Ruler or tape measure 

 

Blue thread-lock or equivalent 

 

   

Note:   As  with  all  kits,  it’s  a  good  idea  to  read  all  the  instructions  and  study  the  parts  before  you  begin 
construction.  Handle the parts of this kit with care so you do not damage any of the structure or covering.  
Inspect all the parts for any shipping damage and report any issues to as soon as you can.  Make sure you 
have a flat and sturdy workbench and follow all safety advice for the tools and adhesives you plan to use. 
 

  
AIRCRAFT COVERING 

1.

 

With  all ARFs,  varying temperatures  and storage  delays can cause covering  material  to loosen over  time 
and transportation. We recommend lightly going over all the covering with a covering iron set at medium 
temperatures.  Be sure to use a soft cover over your iron so you do not scratch the covering surface.  Be 
sure  you  go  over  all  seams  and  edges  of  the  covering  to  assure  it  is  secure  to  the  airframe  and  other 
covering.  Be careful not to apply too much heat or you may cause bubbles or damage to the covering.  A 
heat gun  may  also be used along  with a soft  cotton  cloth to  shrink and  adhere the covering.   Again, be 
extremely careful when using a heat gun.   

2.  Be sure to seal any exposed wood with a thin coating of epoxy to prevent engine oil from soaking in.  This 

is especially important around the engine compartment and servo openings with exposed areas.   

3.  Some modelers prefer to seal the hinge gaps using strips of appropriate covering or clear trim tape.  We 

have found this to be helpful with models intended for higher speed flight or models with unusually large 
hinge gaps.  Our aircraft utilize a very tight double beveled hinge line and do not normally require this step.  
Sealing the hinge gaps is therefore left as an option for the modeler.  

Summary of Contents for SBACH342 120E

Page 1: ...GOLDWING RC 73in SBACH342 30CC 120E Giant Scale Aerobatic Aircraft ...

Page 2: ...120E version 3in Painted carbon fiber spinner and KUZA new fuel Tank are included for 30CC version A QUICK WORD ABOUT SAFETY AND RADIO CONTROL FLYING MODELS With radio control aircraft like any hobby or sport there are certain risks The operator of these models is responsible for these risks If misused or abused you may cause serious bodily injury and or damage to property With this in mind you wi...

Page 3: ...er By the act of using the final assembled model the user accepts all resulting liability If you should find any missing or damaged parts or have any questions about this product please contact within 30 days of the purchase in order to be covered by our warranty You may contact us at service goldwingrc com Included Features Improved axles the material of the axle is stainless steel Flat nylon hin...

Page 4: ... Two quick release canopy New KUZA Fuel Tank with alloy tank cap for 30CC version ...

Page 5: ...ollowed out Electric Spinner included for 120E version Excellent cooling effect for brushless motor Including POM ALU motor washers for 120E version Carbon Fiber accessories version Extra strength carbon fiber control horns ...

Page 6: ... One piece air foiled carbon fiber landing gear Carbon fiber tail wheel assembly with CNC machined metal parts including the aluminium tail wheel hub 3in Painted carbon fiber spinner for 30CC version ...

Page 7: ... Increased diameter carbon fiber wing tube over previous versions Scheme A White red black ...

Page 8: ...Scheme B White Red blue ...

Page 9: ...Scheme C Yellow red black ...

Page 10: ...ing damage and report any issues to as soon as you can Make sure you have a flat and sturdy workbench and follow all safety advice for the tools and adhesives you plan to use AIRCRAFT COVERING 1 With all ARFs varying temperatures and storage delays can cause covering material to loosen over time and transportation We recommend lightly going over all the covering with a covering iron set at medium ...

Page 11: ...r control Horns Bag No KA03CA4 8 single horns for ailerons and elevator and rudder Sand the area of the horn that will be glued to help adhesion KUZA 3 Aluminium Backplate Hollowed out Electric Spinner for 120E version Bag No KAG0205 Color Scheme A B C is red ...

Page 12: ...C version including Aluminum fuel cap Push rod kits Bag No KA03CB3 Two 2 5x60mm Pushrods for aileron Two 2 5x130mm Pushrods for elevator One 2 5x130mm for rudder Pull push style Ball link assembly Bag No KAG00122 8 for ailerons elevator rudder ...

Page 13: ... Alu long arm kits 4 single arms for ailerons and elevator and rudder Servo lead safety clips 5 pcs Bag No KAG0021 Alu Main wheels 2pcs Bag No KAG0157 ...

Page 14: ... New axle kits Bag No KA03CH Carbon fibre tail wheel assembly with CNC machined metal parts including the aluminium tail wheel hub Bag No KAGC103 Extra covering provided for small repairs ...

Page 15: ... 4 allen key wrench Bag No KA03CE Side force generators 2 x 3x12mm hex bolts 2 x 3mm stainless steel self locking nuts 2 x washers Screews for landing gear 4 4x20mm hexagon bolts and 4 washers ...

Page 16: ... Bolts washers for cowl 4 3x14mm Hexagon bolts and 2 10mm PTFE washers and 2 wsahers 20 POM ALU washers for 120E motor Gas engine washers for 30CC version 12 20mm POM washers ...

Page 17: ...ing away from the slots in the rudder and trial fit the two control horns 2 Mix up some 30 minute epoxy and coat the inside of the slots and the center of the control horns Hint a scrap piece of 1 16 ply tooth pick or old hobby blade can be used to coat the inside of the rudder slots Slide the control horns in place and make sure they are centered perfectly by using a ruler to measure between the ...

Page 18: ...dder with masking tapes then allow the epoxy to dry 4 The SBACH can use either closed loop or a rear push pull servo for the rudder We recommend that you balance the model assembled before choosing your servo placement 5 The SBACH is supplied with a high quality set of pull pull cables and ball links ...

Page 19: ... on the servo Set up your radio accordingly and center the rudder servo 7 Aluminum dual servo arm are include in the kit enlarge the control holes with 2 5mm drill bit 8 The SBACH has the closed loop pre installed and crimped at the rudder end These can be connected with the M2 5 bolts and nut The wire will be left looped inside the fuselage and will need to be connected to the servo arm ...

Page 20: ...crimp the brass tube three times just tight enough not to cut the brass tube but enough to securely hold the wire in place Cut off the excess cable with wire cutters Wick thin CA into the brass tube to help hold the cable secure Repeat for the other cable Hint Once you have established the position of the threaded coupler on the cable you can remove the ball link from the rudder horn to give you m...

Page 21: ...ovides pull push style for rudder Below is picture of pull push style linkage set 13 Cut off excess carbon fiber rudder horn and use sandpaper to rough the parts needed to inlay and use epoxy glue to glue the horn in place ...

Page 22: ...14 Use 2 5X130mm push rod between the servo and the rudder horn 15 We recommend using KUZA 1 5 aluminium CNC servo arm sold separately for rudder control LANDING GEAR ASSEMBLY ...

Page 23: ...sort them out on your workbench 2 Bolt the main gear to the bottom of the fuselage using the supplied screws and stainless steel Self locking nuts Place the bolts in through the can tunnel opening with appropriate size spanner Remember the gear will rake forward 3 Loosen out the inner nut then apply thread lock to the axle Tighten the nut back in place allow the thread locker to dry ...

Page 24: ...e to leave a gap on the inboard of the axle Use a small drop of thread lock and tighten in place Slide the wheel onto the axle and install a second wheel collar also using thread lock on the set screw 5 Fit the wheel pant in place and install using the two supplied bolts and washers Use thread lock to secure the bolts in place Repeat the above steps for the other main gear ...

Page 25: ...the accessories see the below picture 7 Line up the caron fiber assembly onto the body of the aircrtaft and use the holes as a drill guide Use a 2mm drill bit as a pilot hole then apply thin CA to harden the wood Use the three self tapping screws and secure the assembly into place ...

Page 26: ...nd apply thin CA It needs to be in a position where the spring is tensioned Use a self tapping screw to secure in place 9 The below is a picture of correctly installed tail wheel assembly NOTE One spare tail wheel spring is included in the spare hardware pack ...

Page 27: ...wings is assembled the same way 1 Aileron push rod linkage set 2 The aileron control surfaces is Pre hingeds Locate the slots for the aileron control horn and remove the covering with a sharp knife Place the horns into position and the cover over the top to work out the area needing to be removed ...

Page 28: ...3 Rough the area of the horn that will be glued in place 4 Using 30 minute epoxy glue the horn and plate into the aileron ...

Page 29: ...rvo with 4 self threading screws Fit a metal servo arm centering with your radio 6 Locate the included aluminum long servo arm enlarge control holes with 2 5mm drill bit 7 Using the pushrods connect the servo arm to the horn Remember that on the pushrod one end is reverse threaded ...

Page 30: ...el when the arm is at 90 degrees REPEAT FOR THE OTHER SIDE 8 We recommend using KUZA 1 5 aluminium CNC servo arm sold separately for wing control ELEVATOR ASSEMBLY NOTE There are pictures of different planes in this manual however this plane s elevator is assembled the same way ...

Page 31: ...vators and remove the covering where the horns are inserted and the area for the plate 3 Sand the area on the horn that will be glued inside the elevator 4 Using plenty of 30 minute epoxy fit the horn and plate into place Use a ball joint and bolt to hold the horn in place while drying ...

Page 32: ...rea that will be glued to fuselage It is essential that this is checked for alignment Place the wing tube in and then look down the fuselage to make sure it is in line Then measure to ensure the same amount is sticking out each side Once happy check again Then glue it to the slot with 30 minute epoxy allow to dry ...

Page 33: ... elevator is flat Choose the holes depending on how much deflection you require 8 There is an option to use one servo or two servos for the elevator If using one servo the 2 parts of the elevator need to be connected by the fiberglass block with glue as shown below The picture is for illustration only The connection of the 2 parts needs to be performed inside the fuselage Glue the ...

Page 34: ... trim as required to ensure that they are level then glue 9 We recommend using KUZA 1 5 aluminium CNC servo arm sold separately for elevator control For 30CC version Engine Exhaust Fuel System Installation Engine Installation NOTE There are pictures of different planes in this manual however this plane s engine is assembled the same way ...

Page 35: ...pprox 2 3mm for the back plate and this is the length that your engine should be set Using the correct length stand offs mount your engine securely using bolts washers and locknuts The use of thread lock is also highly essential for the engine bolts 3 Mount the ignition module according to the manufacturer s instructions The best place to mount it is on the side of the engine box Secure the pickup...

Page 36: ... or there is a servo cutout in the bottom of the engine box for 28cc 38cc engines Mount your throttle servo and complete your linkage setup A hole will need to be drilled on the firewall to allow the pushrod to connect to the throttle arm on the carb 6 An extra servo can be fitted for choke or a mechanical linkage can be used ...

Page 37: ... the fuselage side opposite your ignition switch Make sure your vent line does not come close to any hot exhaust part such as the muffler or canister We recommend the use of small zip ties or fuel line clamps to secure the lines to the tank A barb on the bottom of the fuselage can be fitted for the vent Installation of KUZA Fuel Dot and Fuel Vent Line Plug Not included 1 From June 2015 and on all ...

Page 38: ... installation are pre cut on both sides of the fuselage you may install it on either side Use shape knife to remove the covering Secure the housing of fuel dot with supplied 2 5 mm self tapping screws then plug and install the fuel line to complete the setup of fuel dot ...

Page 39: ... of KUZA CNC Aluminum Fuel Vent Line Plug Similarly two sites for vent line plug installation are available at the bottom of the fuselage Secure KUZA vent line plug with four 2 5 mm self tapping screws as shown below ...

Page 40: ...stallation in the 120E version hardware package There are 8 POM washers and 16 ALU washers 2 Blind nuts are pre installed behind the firewall Since the position of cowl is fixed and length of motors varies you may need to use provided washers to position you motor properly ...

Page 41: ...N NOTE There are pictures of different planes in this manual however this plane s cowling is assembled the same way 1 The cowl is secured with four 3 X 14mm bolts and washers Apply nutlock onto the bolts as the vibration from the gas engine will shake them come loose ...

Page 42: ...2 Labels are provided for aligning the drill holes for the cowl Stick then on without the cowl mark the hole Fit the cowl then press back down The hole will then show the area to drill Sere below ...

Page 43: ...ervo clips can even be glued to the wood structure using CA if desired 5 Check all radio programming and control surface operations thoroughly before your initial flight Check your radio range according to the radio manufacturer s instructions both with the engine off and running Balancing and Pre Flight Checks Most state of the art aerobatic aircraft allow for a wide margin for balancing dependin...

Page 44: ... tube with the wings and not force it The wing tube may be initially tight but will loosen after some with use Guide your servo wires into the fuselage openings and connect to the correct aileron channels Servo clips are recommended Once you have the wings fully seated in the fuselage tighten the wing bolts inside the fuselage 3 Side force generators Assembly Cut the wing film needed to be install...

Page 45: ...nd perform a range check once again with the engine off and running Be sure all surfaces are moving in the correct direction and the correct amount for your flying setup 7 You are now ready for your maiden flight Good luck and enjoy your new aircraft If you have any comments or questions about this manual or the aircraft please email service goldwingrc com Recommend Accessories Not included KUZA T...

Page 46: ...KUZA CNC Aluminum Fuel Dot 3 color to choose black blue red No KAG0231B or KAG0231U or KAG0231R KUZA CNC Aluminum Fuel Vent Line Plug 3 color to choose black blue red No KAG0232B or KAG0232U or KAG0232R ...

Page 47: ... KUZA Fuel line clips 10PCS No KAG02454 KUZA Heavy duty 7075 aluminum Servo Arm For Futaba servo 25T 39mm 1 5in Single No KAG0S72F ...

Page 48: ...For Hitec servo 24T 39mm 1 5in Single No KAG0S72H For JR servo 23T 39mm 1 5in Single No KAG0S72J KUZA new Wingbag for 73in SBACH Two color to choose red black blue silver No KAG0093 ...

Page 49: ...GOLDWING RC www goldwingrc com ...

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