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Ofna Racing Ultra LXComp Instruction Manual
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Ofna Racing Ultra LXComp Instruction Manual

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INSTRUCTION MANUAL
• New Arms Design
• New Bumper
• Uses Less "E" Clips
• 12mm X-1 Racer Shocks
Ultra LX Comp2 Rev:01

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Summary of Contents for Ofna Racing Ultra LXComp

  • Page 1 INSTRUCTION MANUAL • New Arms Design • New Bumper • Uses Less ”E” Clips • 12mm X-1 Racer Shocks Ultra LX Comp2 Rev:01...

  • Page 2: Required For Operation

    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. • Buy LONG glow plugs, like OFNA/PICCO Plug (#51007-cool or 51008-med).
  • Page 3 MUST READ THIS BEFORE RUNNING Running a nitro kit is fun and easy, but to make this a safe rusting. • Clean oil and dirt from chassis with a degreaser. and good experience you must observe a few rules. This kit is extremely fast, easily over 40MPH, and can seriously Precautions injure someone if you are not careful.
  • Page 4 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 5 ASSEMBLY OF THE FRONT AND REAR DIFFERENTIAL Step 1 *Builds two differentials for font and rear. 30779 *Notice the straight 2x12.8 holes are for the front and rear only. 30769 Diff. Gear (Large) 30779 30620 7x19x6mm O-Ring Ball bearings 30901 30751(Fro nt/Rear) Cap Joint 30761(Center)
  • Page 6 ASSEMBLY OF THE CENTER DIFFERENTIAL 30769 Step 1 *Notice the tapered Diff. Gear holes are for the (Large) center differential only. 30779 2x12.8 30779 O-Ring 30620 7x19x6mm Ball bearings 30761(center) 30911 30751(F/R) Diff. Case Break Cap Joint 30773 4x27mm Cross Pin 30779 2x12.8mm 30620...
  • Page 7 ASSEMBLY OF THE SPUR GEAR 30111 31040 3x10mm 51T Spur Gear Flat Head Hex Screw *Notice the tapered holes are for the center diff. Only. 35313 M3 Nylon Nut 35313 Nylon Nut 94033 M3x3 Set Screw 30111 3x10mm Flat Head Hex Screw Center differential assembly...
  • Page 8 ASSEMBLY OF THE BRAKE CAM AND CENTER PLATE ASSEMBLY OF THE BRAKE CAM AND BRAKE PADS 94004 30213 3X12mm Brake Cam Hex Screw 30652 Center Diff. Plate 30211 Plastic Bushing 30212 Ball Bearing 94004 3X12mm Hex Screw 30211 Plastic Bushing 30212 Ball Bearing 30211...
  • Page 9 ASSEMBLY OF THE FRONT BEVEL GEARS 30120 *Push 3mm tubes into the Bevel Gear holes of the diff. Case. (Large / Metal) 30121 4x3x3mm Chromed Tube 30121 3x5mm Hex Screw * Builds two differential for front and rear. 30121 3x4x4mm Chromed Tube 30121 3x5mm...
  • Page 10 ASSEMBLY OF THE FRONT UPPER ARMS * Builds two upper arms for use. 34034 Front Upper 34034 Arm (Left) Front Upper 36860 Arm Ball End * Leave 8mm 5x35mm 36860 5x35mm 40104 10mm Ball and Socket 34034 Front Upper 34034 Arm (Right) Front Upper Arm Ball End...
  • Page 11 ASSEMBLY OF THE FRONT ARMS 30151 40104 90020 4mm Arm Shaft 4x16mm Cap Screw 2.5mm E-Ring 30152 90021 3mm Arm Shaft 3mm E-Ring Assembly of the right and left hand side are the same. 90021 E-Ring 30151 Arm Shaft E-Ring 34035 Front Lower 40104...
  • Page 12 CLIP IN THE CASTER ADJUSTER Assembly of the right and left hand side are the same. 34037 Caster Adjuster use adjuster t o change the caster angle . *Caster angle will Caster become bigger. Adjuster *Caster angle will become less. ASSEMBLY OF THE FRONT STABILIZER 94002 3x8mm button Screw...
  • Page 13 ASSEMBLY OF THE REAR GEAR BOX 30130 Bevel Gear (Small) Step 1 30630 30010 6x13x5mm Gear Box 90026 Ball Bearing 5x5mm Step 2 Set screw * place 5X4 mm set screw in D cut 90026 5x5mm Set screw 30630 6x13x5mm Ball Bearing 36730 Cap Joint...
  • Page 14 ASSEMBLY OF THE REAR UPPER ARM ROD ASSEMBLY OF THE REAR WHEEL HUB * Builds two rear upper rods for left *Builds two rear wheel hubs for use. and right hand-side. 40065 Upper arm Plastic Rod End 36850 7mm Ball 36082 36880 36053...
  • Page 15 ASSEMBLY OF THE STABILIZER ROD ASSEMBLY OF THE REAR STABILIZER 94002 30401 3x8mm Screw Stabilizer Ball End 94006 30340 3x18mm 94035 Stabilizer Ball Screw M3x8mm 3x8x0.8mm Set Screw Washer 30401 30401 6mm Ball Stabilizer Ball End 94033 M3x3 Set Screw 34027 Stabilizer 3x8x0.8mm...
  • Page 16 ASSEMBLY OF THE SERVO SAVER 36746 36743 E-Ring E-Ring 36740 36740 94006 Servo Saver"A" and" B" 36740 Servo Saver M3x18mm Plastic Set Servo Saver Top Adapter Hex Screw Hom A 36742 Servo Saver 36740 36740 Bushing Servo Saver Servo Saver Horn B Hom A 36741...
  • Page 17 ASSEMBLY OF THE GEAR BOX ONTO CHASSIS 34016 34035 Chassis (Hard-Coated) Front Bumper 94026 4x12mm Flat Head Hex Screw 94023 3x25mm 94019 94023 Flat Head Hex Screw 3x10mm 3x25mm Flat Head Hex Screw Flat Head Hex Screw 94027 94027 4x16mm 4x16mm Flat Head Hex Screw Flat Head Hex Screw...
  • Page 18 ASSEMBLY OF THE REAR BOX ONTO CHASSIS 94023 3x25mm Flat Head Hex Screw 36100 Center Drive *Insert drive shaft into Shaft (Rear) cap joint before assembly. 94027 4x16mm Flat Head Hex Screw 94027 4x16mm Flat Head Hex Screw 94027 94023 4x16mm 3x25mm Flat Head...
  • Page 19 ASSEMBLY OF THE FRONT SERVO AND RADIO TRAY 34026 Servo Washer 94003 94003 3X10mm 3X10mm Hex Screw Hex Screw 34026 Servo Washer 94003 94003 3X10mm *Put the protection rubber 3X10mm Hex Screw onto your servo. Hex Screw 34026 Servo Mount 34026 Servo Washer 34025...
  • Page 20 ASSEMBLY OF THE RADIO TRAY ONTO CHASSIS 94003 3X10mm Hex Screw 94003 34070 3X10mm Rear Stiffener Hex Screw 94004 3X12mm Hex Screw 40109 Fuel Tank 30286 Plastic Washer 38120 94003 Alum. 3x10mm Fuel Tank Post Flat Head Hex Screw Pressure Nipple 94003 3x10mm...
  • Page 21 ASSEMBLY OF THE ENGINE ONTO CHASSIS 40104 4x12mm Flat Head Hex Screw 94042 Nylon Nut 94042 M4 Nylon Nut 94036 5x5mm Set Screw 94036 5x5mm Set Screw 30491 Muffler Stay 10114 5X12mm 40104 Hex Screw 4x12mm Flat Head Hex Screw ASSEMBLY OF THE FRONT STEERING ROD 94004 3X12mm...
  • Page 22 ASSEMBLY OF THE CLUTCH *Place the clutch shoes with the clutch springs over the Step1 Step2 3 pins of the flywheel. *Using a phillips screw driver or needle nose pliers and bend the small end ln the clutch spring behind the pilot shaft 10091 or 10098 than press down.
  • Page 23 ASSEMBLY OF THE THROTTLE LINKAGE 30800 2X8mm Screw 30800 Step3 Step1 Step2 30800 2X4mm Screw 2X25mm 30800 Hex Screw Servo Mount 30800 2X7x0.5mm 30800 Washer 2X65mm 94033 3x3mm 30800 Set Screw Tie-Rod 30800 Adjust Mount 30800 Adjust Mount 10768 30800 Servo Horn 2X65mm 10769...
  • Page 24 ASSEMBLY OF THE SHOCK Fit the o-ring into groove. 40060 40113 49041 2.5mm Oil Seal Nylon Nut 40076(Front) ( Make 2 for front.) Shock body 40059 14.7mm O-Ring 40090 3.5mm O-Ring 32235 40090 2.6x5mm Shock Piston 3.5mm Washer O-Ring 40056 Shock Plastic * Short shaft 40090...
  • Page 25 ASSEMBLY OF THE FRONT SHOCK ABSORBER 40056 Plastic * Take the plastic bushing Bushing from the shock plastic parts tree. 35313 3X20mm Nylon Nut Cap Screw 35313 M3 Nylon Nut 3x20mm Cap Screw ASSEMBLY OF THE REAR SHOCK ABSORBER 40056 Plastic Bushing * Take the plastic bushing...
  • Page 26 ASSEMBLY OF THE TIRES AND WHEELS(Right) ASSEMBLY OF THE WING * Make two tires for right hand side. * Notice the direction of the tires. Check the hole spacing on the underside. ì ½ T ¤ Õ ¦ µ ¥ X ¥ ¿ ¥...
  • Page 27 Addendum Sheets...

  • Page 28: Setting Guide

    SETTING GUIDE FRONT CAMBER ANGLE SETTING REAR CAMBER ANGLE SETTING Negative Positive Negative Positive Turnbuckle Turnbuckle Place the model car on flat surface. Raise the chassis to it's maximum clearance before the wheels leave the ground. Adjust the length of the front and rear upper arms so that the wheels are right angle to the ground.
  • Page 30 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. • To check!..place the brass corn against the engine bearing, then flywheel. You should be covering one or two 3 X 8mm thread of the engine shaft.
  • Page 31 ALIGN THROTTLE SERVO AND BRAKE SAME AS SHOWN ( Neutral Position ) Engine at idle ( Braking Position ) Brake is not on Brake is on Brake Adjust Nut ( Full Throttle Position ) Less Brake More Brake Engine at full throttle Loose Tighten * Tighten or loose the adjuster nut...

  • Page 32: New Engine Break-In

    Barrel Stop Screws - Used for adjusting Idle. Set for 1/16th inch gap to start new engines. You can open more for faster idle. USE LONG GLOW PLUG WITHOUT IDLE BAR, OFNA/PICCO #51007 IS RECOMMENDED OFNA RACING , 7 VANDERBILT, IRVINE, CA. 92618 • TEL:(949)586-2910...
  • Page 33 52980 FORCE 28 PULL START ENGINES 52283 52259 52280 52960 52250 52098 52284 52274 52091 52275 52276 52930 52285 52277 52278 52093 52140 52972 52990 52286 52960 52779 52170 52100 52181 52288 10330 52980 52282 52289 52900 52290 52099 52090 52930 FORCE .28 PULL START 52283...
  • Page 34 • TROUBLE SHOOTING GUIDE PROBLEM CAUSE SOLUTION Fuel line not primed Fill fuel tank and pressurize tank by capping exhaust ENGINE WILL NOT START Glow plug will not heat(lite) Check glow plug battery heater or replace plug. Engine flooded, too much fuel Check carb.
  • Page 35 Ultra Lx Comp (New Design) - Price List ULTRA LX COMP RTR PARTS No.# Description Retail 10010 SHOES, 3 SHOE TYPE, CARBON BLACK, 3 PCS. 12.95 10011 SHOES, 3 SHOE TYPE, ALUM. CNC BLUE, LITE WEIGHT, 3 PCS. 24.95 10012 SHOES, 3 SHOE TYPE, ALUM.
  • Page 36 Ultra Lx Comp (New Design) - Price List 30630 BEARING, 6 x 13mm, 12 PCS. (WHEEL HUBS) 59.95 30631 BEARING, 6 x 13mm, 2 PCS. 10.95 30632 SEALED BEARING, 6 x 13mm, 12 PCS. 66.95 30652 CENTER MOUNT PLATE, ALL ULTRA'S 6.95 30700 SCREW/NUT BAG, ULTRA...
  • Page 37 Ultra Lx Comp (New Design) - Price List 36081 REAR UP-RIGHT, 8mm AXLES, 2 PCS. 12.95 36082 AXLES, REAR, 8mm AXLES, 2 PCS. 10.95 36100 CENTER DOG BONES, SET 16.95 36152 FRONT UNIVERSAL JOINTS, 9.5 & RAVAGER PAIR 39.95 36170 REAR ARM PINS, 3mm 4 PCS.
  • Page 38 BLANK...

  • Page 39: Owner's Registration Card

    The registration card should be filled out and mailed to OFNA Racing within 10 days of purchase date. In the event that the kit is incomplete or component parts are broken due to error in manufacturer, contact your dealer from which you purchased the kit for replacement part or call OFNA at (949) 586-2910 for your nearest dealer location.