Ofna Racing 1/8 SCALE OFF-ROAD BUGGY Instruction Manual
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Ofna Racing 1/8 SCALE OFF-ROAD BUGGY Instruction Manual

Ofna Racing 1/8 SCALE OFF-ROAD BUGGY Instruction Manual

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Strong Front and Rear chassis braces.
Tuned Polished Dual Chamber racing pipe.
INSTRUCTION MANUAL
Unique adjustable chassis width of 310mm or 330mm.
High performance .26 engine with Shaft Start Motor handle.
Full race Offset King Pin aluminum steering knuckle.
Three sealed differentials with 6 steel gears.
Racing X-Equal tires and V-spoke wheels.
Adjustable Front and Rear roll bars.
Multi disc brakes with adjustable bias.
Hard Coated Threaded body oil fill shocks.
5 Degree hard coated 3mm chassis.
Racing 3 shoe clutch with Aluminum CNC flywheel.
Steel main spur gear and center differential.
Adjustable servo saver.
Front CVA joint and 8mm axles.
140+cc fuel tank with inside stone filter.

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Summary of Contents for Ofna Racing 1/8 SCALE OFF-ROAD BUGGY

  • Page 1 Strong Front and Rear chassis braces. Tuned Polished Dual Chamber racing pipe. INSTRUCTION MANUAL Unique adjustable chassis width of 310mm or 330mm. High performance .26 engine with Shaft Start Motor handle. Full race Offset King Pin aluminum steering knuckle. Three sealed differentials with 6 steel gears. Racing X-Equal tires and V-spoke wheels.
  • Page 2 RTR KITS - REQUIRED FOR OPERATION You will need to buy a few items to start the engine and run the car. THINGS NEEDED • Use 20% nitro CAR fuel. Do not use airplane or heli fuels, they will over heat engine. •...
  • Page 3 MUST READ THIS BEFORE RUNNING Running a nitro kit is fun and easy, but to make this a safe • Clean oil and dirt from chassis with a degreaser. and good experience you must observe a few rules. This Precautions kit is extremely fast, easily over 40MPH, and can seriously •...
  • Page 4 NON-RTR OR PRO KITS - REQUIRED FOR OPERATION THINGS NEED BESIDES THE KIT 3.5 cc (21 Class) ENGINE REAR EXHAUST OFNA/Picco O-1 bp #51217 Glow Plug Heat with Battery & Charger Glow Fuel # 10227..$$19.95 (please note OFNA Glow Heats available) Bottle’s with spout # 10160 - large 500cc # 10161 - large 500 ccAuto Stop...
  • Page 5 PLASTIC PARTS 40017 40003 GEAR BOX PLASTIC PARTS DIFF. CASE PLASTIC PARTS 40015 ARM HOLDER PLASTIC PARTS 40027 40013 & 40048 WING SUPPORT PLASTIC PARTS FRONT BUMPER & BATTERY HOLDER PLASTIC PARTS...
  • Page 6 PLASTIC PARTS 40031 40047 SERVO SAVER PLASTIC PARTS RECEIVER BOX PLASTIC PARTS 40040 CENTER DIFF. MOUNT PLASTIC PARTS 40018/40029 40046 CHASSIS BRACE PLASTIC PARTS STONE GUARD PLASTIC PARTS 40029 40029 40019 40065 40065 40018 40056 SHOCK ABSORBER PLASTIC PARTS...
  • Page 7 ASSEMBLY OF THE THROTTLE LINKAGE SYSTEM #30800 #30530 Plastic Throttle Plastic Throttle * Snap On. Ball Joint 3X3mm 3X3mm 2mm Rod Set Screw Set Screw Throttle Spring #10300 3X3mm Set Screw Alum.Stopper Fuel Tube ( 6mm ) #10300 Alum.Stopper * Align throttle servo same Plastic Collar as shown.

  • Page 8: 36053 8X16Mm Ball Bearing

    ASSEMBLY OF THE DIFFERENTIAL GEAR 30779 4x4mm 4 x 10mm Set Screw 40004 washer Diff. Gear 40006 30779 (Small) Cap Joint 4 x 10mm 40010 40004 washer 30773 2.5x13.8mm Diff. Gear (Small) Cross pin 40003 Diff. Case 30773 36053 8x16mm 40004 Cross pin Ball bearing...

  • Page 9: Table Of Contents

    ASSEMBLY OF THE FRONT GEAR BOX OPTION: #49012 PINION GEAR 36053 13TOOTH 8X16mm 40017 Ball bearing Gear Box 36053 8X16mm Ball bearing 40021 14TSmall 36053 Bevel Gear 8X16mm Ball bearing..4 40017 Gear Box 40024 13x16x0.2mm Shim....2 40024 13x16x0.2mm Shim Use shims to adjust gear 40021 mesh.
  • Page 10 ASSEMBLY OF THE FRONT SHOCK TOWER OPTION: 49003 CNC 7075 Alum. Shock Tower Nylon Nut 40014 Front Shock Tower M4x15 TP Screw 94004 M3x12 TP Screw ASSEMBLY OF THE FRONT KNUCKLE ARMS Assembly of the left and gight hand side are the same.
  • Page 11 ASSEMBLY OF THE FRONT UPPER ARMS (Right) 40101 Front Upper Arm (Left) 40101 Front 36860 5x40mm Upper Arm Turnbuckle Ball End 10mm ASSEMBLY OF THE FRONT LOWER ARMS Assembly of the right and left hand side are the same. 90020 36170 2.5mm Arm Shalf...
  • Page 12 ASSEMBLY OF THE FRONT STABILIZER 94007 3x20mm Screw 30341 40029 Stabilizer Ball Stabilizer Ball End (Long) 94007 3x8mm 3x20mm Set Screw 40029 Screw Stabilizer Ball End 30401 94033 Ball End Set Screw 94033 Set Screw 30341 A34B Stabilizer Ball..2 94007 40018 3 x 20mm Stabilizer...

  • Page 13: 4X15Mm Tapping Screw

    ASSEMBLY OF THE WING STAY ( Take the plastic part from #40027Rear Win Stay Set. ) 40027 Wing Mount 49038 Rear 40027 Shock Tower, Orange Wing Mount 40027 Rear 35313 Body Mount *Insert the 3mm nylon nut before assembly. Nylon Nut 94007 3x12mm 3x20...

  • Page 14: Set Screw

    ASSEMBLY OF THE REAR GEAR BOX ONTO CHASSIS Assembly of the right and left hand side 36082 are the same. Rear 36053 Wheel Shaft 8x16x5mm 36055 36081 Ball bearing 2.5x17mm Rear * A 4 x 10mm set screw is used Upper Right to adjust the ride height.
  • Page 15 ASSEMBLY OF THE REAR AND ANTI-ROLL BAR Assembly of the right and left hand side 35313 are the same. Nylon Nut Rear Upper Arm Assembly 30341 Stabilizer Ball..2 3 x 25mm 94007 Cap Screw 3 x 20mm Screw ......2 94033 35313 3 x 3mm Set Screw....2...

  • Page 16: X 16Mm Flat Head Tapping Screw

    94027 4 x 16mm Flat Head Tapping Screw..4 40064 Chassis 94027 4 x 16mm Flat Head Tapping Screw ASSEMBLY OF THE SERVO SAVER 40037 Steering Plate Hex Screw 40037 Option: Steering Plate 40073 Hex Screw 4x8mm Ball bearing flange 4x8mm Plastic flange 40035 Bushing...
  • Page 17 ASSEMBLY OF THE SERVO SAVER ONTO THE CHASSIS 4x15mm Tapping Screw 4x10mm Screw 40027 Front Body Post * Assembly the front body post 94009 40030 before assembly the Front Plate. 4x10mm Front Plate Screw..2 94004 3 x 12mm Tapping Screw..1 3x12mm Screw 94011...
  • Page 18 ASSEMBLY OF THE BRAKE AND SPLIT CENTER DIFF. MOUNT * Make brake pads for each side. * Take off the double sided paper before assembly. 36660 Brake Pad 36661 Brake Pad linings 40045 40040 Brake Pad Center Diff. Adjustment Screw 40044 Mount 40044...
  • Page 19 ASSEMBLY OF THE CENTER DIFF. INTO CENTER DIFF. MOUNT Center Diff. Assembly 40042 Brake Disk 40042 Brake Disk 40042 40042 Brake Disk Brake Disk OPTION: #49008 GRAPHITE BRAKE DISKS, 2PCS. 94003 3x10mm Screw..4 94033 3 x 3mm Set Screw....2 30171 Brake Lever..2 3x10mm Screw...
  • Page 20 ASSEMBLY OF THE CENTER DIFF. ONTO CHASSIS 40028 Center Drive Shaft (93mm) 40028 Center Drive Shaft (93mm) 94026 4x12mm 4 x 12mm Flat Head Flat Head Screw..2 Screw ASSEMBLY OF THE CENTER STIFFENER ONTO CHASSIS OPTION: 49015 CNC Alum. Chassis Brace Set 40018 Center Chassis Brace...
  • Page 21 ASSEMBLY OF THE STONE GUIDE Assembly of the right and left hand side are the same. OPTION: Stone Guard Yellow . 40078 Red . 40079 Lime . 40080 Blue . 40081 Black . 40046 40046 Stone Guard 3x10mm Screw 3x10mm Screw 40046 Stone Guard...
  • Page 22 ASSEMBLY OF THE RADIO TRAY 3x10 Tapping Screw 3x10mm Tapping Screw 3x10 Tapping Screw 3x10mm Tapping Screw 49039 Alum. Throttle Radio Tray, Orange Servo Steering Servo 3x12mm Tapping Screw 40027 Radio Tray 40027 Post Radio Tray ( Plastic ) Post ( Plastic ) 10274 OPTION:...

  • Page 23: Cap Screw

    ASSEMBLY OF THE CLUTCH INTO ENGINE Notes: 3 x 5mm Screw Non-Pull Start Engines... • Alum. Washer behind the flywheel is not needed when using Force engines or similar types. O.S. Engines will require washer spacer. 3 X 8mm • To check!..place the brass corn against the engine bearing, then flywheel. You should be covering one or two thread of the engine shaft.

  • Page 24: Tapping Screw

    INSTALLATION OF THE FUEL TANK AND ENGINE ONTO CHASSIS Note Book Paper 3X15mm 40066 40066 Tapping Screw Pressure Fuel Nipple Nipple 40109 Fuel Tank, 140+cc * Assemble the fuel tank post before assembling the fuel nipple. 3X15mm Tapping Screw * Use note book paper to set gear backlash between spur gear and clutch bell.

  • Page 25: 3Mm

    35313 ASSEMBLY OF THE FRONT STEERING ROD Nylon Nut * Use the screw provided * Enlarge this hole. with your servo. 30690 30410 3x30mm Tie Rod Tie Rod End 3x10mm Screw 10768 30411 Servo Horn Ball 30411 Ball 3x15mm Screw 30410 Tie Rod End Parallel...
  • Page 26 ASSEMBLY OF THE BRAKE LINKAGE INTO 3X3mm 10300 BRAKE ROD Set Screw Alum. *Snap On. Stopper Fuel Tube * Align throttle servo same as shown. Fuel Tube Brake Idle Position Full Throttle USING BREAK ADJUST NUT *use the screw provided With your radio. Tighten Less Brake Loosen...

  • Page 27: Shock Assembly

    SHOCK ASSEMBLY * Assembly 2 pieces of the shock shaft for front and 49041 Oil Seal rear. Spring Adjuster, Orange 40076 40060 Shock 32235 40059 2.5mm Shock Piston..4 Cylinder 14.7mm Nylon Nut O-Ring 32237 Fit the O-ring into groove. 3.5mm O-Ring 32235 Make a PAIR for front...

  • Page 28: 3 X 25Mm

    ASSEMBLY OF THE FRONT SHOCK ABSORBER Assembly of the right and left hand side are the same. 3x25mm Cap Screw 30702 3 x 20mm Cap Screw..2 * Take the plastic bushing from the shock plastic 35313 parts tree. Nylon Nut..2 36610 Shock Upper Fixing Plastic...

  • Page 29: Option: 49015

    ASSEMBLY OF THE WHEELS ONTO FRONT KNUCKLE ARM AND REAR HUB Assembly of the right and left hand side are the same. 30051 Wheel Nut 86044 - Red 86045 - White 86046 - Lime 86047 - Yellow 86048 - Black 86049 - Chrome 17mm Dual Spoke, 2 pairs (4 wheels) per Bag.
  • Page 30 MOUNTING THE BODY 31149 Body Clips 31149 Body Clips FOR A STICK PACK BATTERY 3x12mm Screw * Use tape to secure the battery. 3x12mm Screw Tape 40048 Stick Pack Battery Holder 40048 (5 Cell) Battery Holder Mount 3x12mm Stick Pack Screw Battery(5 Cell) ( Not Included.)
  • Page 31 SET-UP GUIDE RIDE HEIGHT ADJUSTMENT Hex Screw Use a 2mm hex screw to adjust the ride height. Screwing in the 4x10mm set screw..Ride height becomes lower. Uncsrewing the 4x10mm set screw..Ride height becomes higher. Firm Soft Firm Soft...
  • Page 33 ENGINE BREAK-IN AND TUNNING (BREAK-IN THE ENGINE BEFORE DRIVING THE CAR!) • Choose a wide clear outdoor location with low dirt and dust. OPTIONAL OFNA CAR STANDS • Set the car on box or holder with wheels off the ground. •...
  • Page 34 TUNING AFTER BREAK-IN Close master needle by turning clockwise until it stops. Then open needle by turning counterclockwise 3 turns When running car, adjust carb with 1/8 clockwise turns, (rich setting). slowly leaner, until the top speed good. Check engine temp, if possible, for no more 250 degrees.
  • Page 35 APPENDIX PAGES...
  • Page 36 SHAFT START NOTICE: SOME VIOLATOR RTR KITS WILL COME WITH “SHAFT START” (same as Rotor Start). THEREFORE, A PULL START ENGINE IS NOT USED AND THE SHAFT START BACK PLATE IS ALREADY INSTALLED. BEFORE YOU CAN USE THE SHAFT START MOTOR HANDLE, YOU MUST FIRST GET OR BUY A STANDARD 7.2 BATTERY PACK.

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