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Associated Electrics RC8B4 Manual
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Associated Electrics RC8B4 Manual

1:8 scale 4wd nitro off rofd competition buggy kit
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Summary of Contents for Associated Electrics RC8B4

  • Page 2 • New two-piece rear body post features a rubber grommet to allow some flex to extend the life of the body :: Additional Your new RC8B4 Kit comes as a kit. There are some items you will need to complete your kit (refer to website for suggestions): • 4.8-7.4v receiver battery (Flat style NiMH, Flat style LiPo, Flat style LiFe) •...
  • Page 3 :: Hardware - 1:1 Scale View Button Head (bhcs) Flat Head (fhcs) Set Screws 2.5x6mm (4675) 2.5x6mm (31520) 3x3mm (25225) 2.5x8mm (31448) 2.5x8mm (31521) 3x6mm (81257) 3x5mm (31540) 2.5x18mm (81259) 3x10mm (4671) 3x6mm (31541) 3x6mm (31531) 3x12mm (81258) 3x8mm (25201) 3x8mm (31532) 4x4mm (7732) 3x10mm (25202)
  • Page 4 Each part in the This symbol indicates a Racers Tip. foldout has a number assigned to it for ordering replacement parts. Associated Electrics, Inc. Customer Service 21062 Bake Parkway Tel: 949.544.7500 Lake Forest, CA 92630 Fax: 949.544.7501...
  • Page 5 2/22 :: Differential Build (Front and Rear) - Bag 1.1, 1.2 - Step 1 81380 81385 Diff Sun Outdrive Gear, 20T, 81380 O-Ring 5.8x1.9mm Set aside 13x15.8mm 2.5x12mm 81379 shims until diff install 91564 Diff 8x16x5 Case Bearing 81381 Diff Shim 6x8x0.20mm 81008 15mm...
  • Page 6 :: Differential Build (Front and Rear) - Bag 1.1, 1.2 - Step 4 89208 3x14mm FHCS Racer’s Tip: Fill diff above the cross pins, below the planet Front Diff Fluid: gears as shown. 5,000cst #5453 Rear Diff Fluid: 5,000cst #5453 :: Differential Build (Center) - Bag 1.1, 1.2 - Step 5 81380 81385...
  • Page 7 :: Differential Build (Center) - Bag 1.1, 1.2 - Step 7 81384 81380 Diff 81380 Diff Sun Gasket Gear, 20T, 2.5x12mm Racer’s Tip: Use black grease (#6588) to coat the back side of the diff gasket (i.e. not Align pin with the entire gasket) groove in sun gear before installation!
  • Page 8 :: Shocks Build - Bag 2.1 - Step 2 81512 81512 Shock Cap Shock Cap Insert Insert 81452 RC8B3.2 Racer’s Tip: Use green slime 91492 Shock Cap (#1105) to 2x4mm lube the o-rings BHCS before installation! 91492 Gasket 81190 Shock 81453 81453 Boots...
  • Page 9 :: Turnbuckles Build - Bag 3.1- Step 1 Steering Servo Turnbuckle 1401 91521 33mm Ball Cup Turnbuckle Set aside until page 22 15.00mm (0.59”) :: Turnbuckles Build - Bag 3.1 - Step 2 Steering Turnbuckle 81562 Turnbuckle 81521 89526 Ball, Rod End, 4x50mm Shouldered...
  • Page 10 25201 Loosely attach 3x8mm 3x5mm FHCS and FHCS then install 3x8mm FHCS. Tighten after 81500 all screws are installed RC8B4 Chassis 81262 (not included) 4x10mm FHCS :: Steering / Chassis Build - Bag 4.1 - Step 2 81084 Servo Saver...
  • Page 11 :: Steering / Chassis Build - Bag 4.1 - Step 4 25201 3x8mm FHCS 81518 Steering Rack 81517 Steering Bellcrank :: Front Gearbox Build - Bag 5.1, 5.2, 5.3 - Step 1 89221 81510 5x4mm Gearbox, Set Screw (Inboard) 81564 Dogbone Outdrive, Front...
  • Page 12 :: Front Gearbox Build - Bag 5.1, 5.2, 5.3 - Step 3 Build left and right side! Kit Setup: Droop Screw: Kit Setup: 1.5mm 81520 81520 Arm Mount Arm Mount Insert, Center Insert, Center 81446 81567 81566 Suspension Arm Mount Arm Mount Arm Shim 81060...
  • Page 13 :: Front Gearbox Build - Bag 5.1, 5.2, 5.3 - Step 6 Tighten 3x6mm set screws 81524 just enough to still allow the Body Post, 89214 anti-roll bar to move freely. 25225 Front 4x12mm 3x3mm FHCS 81522 Set Screw Top Plate 89216 31532 31521...
  • Page 14 :: Front Gearbox Build - Bag 5.1, 5.2, 5.3 - Step 9 Build left and right side! 81446 31521 Caster Clip, 2.5x8mm Add 1.0mm caster clip behind 1.0mm BHCS suspension arm. Adjust final arm spacing by adding remaining clips in front of arm until fit is tight and the arm rotates freely.
  • Page 15 :: Steering Blocks Build - Bag 6.1 - Step 3 81056 Suspension Endcap 81072 Pillow Ball Shim (1.4mm) Pillow Ball Shims 81072 Pillow 25211 Ball Shim 3x10mm 0.35mm 0.7mm 1.4mm (0.35mm) BHCS :: Steering Blocks Build - Bag 6.1 - Step 4 81262 81524 4x10mm...
  • Page 16 :: Rear End Build - Bag 7.1, 7.2, 7.3 - Step 1 81565 Dogbone 81543 Outdrive, Gearbox, Rear (Inboard) 89221 Racer’s Tip: Use black grease 5x4mm (#6588) to Set Screw lube the diff pinion before installation! 91559 6x13x5mm 81009 Bearing Diff Pinion Gear, 12T 81543...
  • Page 17 :: Rear End Build - Bag 7.1, 7.2, 7.3 - Step 4 Droop Screw: 81260 Kit Setup: 81512 Kit Setup: 4x14mm 81585 1.5mm Anti-Roll BHCS Anti-Roll Bar Link Bar Pivot 81060 Hinge 81455 Arm Mount, HRC, Narrow 81520 Arm Mount Insert, Center 81446...
  • Page 18 :: Rear End Build - Bag 7.1, 7.2, 7.3 - Step 7 25189 81525 3x22mm Chassis BHCS Brace Mount 89214 Racer’s Tip: 4x12mm Tune the FHCS rear end for more flex with#81562 ball end insert here 25612 31532 3x8mm Locknut 81525 BHCS W/Flange...
  • Page 19 :: Rear Hubs Build - Bag 8.1, 8.2 - Step 1 89096 25215 Tighten set Build two! screw before Wheel 3x6mm 81328 camber link Set Screw Hex Pin installation. 81545 Coupler 81545 Rear Hub Rear Insert, Center 81547 81497 CVA Axle, CVA Bone Steel 81081...
  • Page 20 :: Center Bulkhead - Bag 9.1 - Step 1 81448 Center 81256 Bulkhead, C-Clip, Lower 81043 81448 Center Rotor Top Plate Guide 81040 89214 Brake 4x12mm 31448 31448 FHCS 2.5x8mm 2.5x8mm FHCS FHCS :: Center Bulkhead - Bag 9.1 - Step 2 25225 81042 3x3mm...
  • Page 21 :: Center Bulkhead - Bag 9.1 - Step 4 81565 89212 18.40mm (0.72”) Center 3x30mm Dog Bone, FHCS 115mm 81550 Brake Rotor 81564 Center Dog Bone, 86.5mm Note direction of center diff. :: Linkages Build - Bag 10.1 - Step 1 81555 7184 81555...
  • Page 22 Radio Tray Configuration: Option 1 Option 2 Option 3 Option 4 The radio tray on RC8B4 can be configured in four different ways. Each configuration changes the amount and location of flex in the chassis. Experiment with different configurations when running on different surfaces.
  • Page 23 :: Radio Tray Build - Bag 11.1 - Step 3 42007 42007 Receiver Battery Grommet not included! Receiver Plug 31448 Grommet 2.5x8mm FHCS 81432 Receiver not included! Battery Box, Top 6727 81432 Servo Receiver Tape Box, Top :: Radio Tray Build - Bag 11.1 - Step 4 25225 25211 25211...
  • Page 24 :: Clutch / Filter Build - Bag 12.1, 12.2 - Step 2 81366 Clutch Shoe / Spring Installation Order: Clutch Shoe 81402 81375 Spring, Green, Clutch Clutch Shoes, 0.95mm Shoe, Hard, 4-Shoe Composite Aluminum Short end of clutch shoe spring 81365 81365 installed into flywheel.
  • Page 25 :: Clutch / Filter Build - Bag 12.1, 12.2 - Step 5 Header pipe not included! 25620 3x10mm Exhaust spring not SHCS included! Header pipe gaskets not included! 81115 Engine Exhaust Pipe Mount not included! :: Clutch / Filter Build - Bag 12.1, 12.2 - Step 6 7732 4x4mm Set Screw...
  • Page 26 :: Clutch / Filter Build - Bag 12.1, 12.2 - Step 7 When installing your engine, make sure the rear drive shaft does not interfere with the engine block. You may need to remove material from the engine block for fitment. Exhaust Set Screw not included! :: Fuel Tank Build - Bag 13.1, 13.2 - Step 1...
  • Page 27 :: Fuel Tank Build - Bag 13.1, 13.2 - Step 2 Pressure line from Fuel line from fuel fuel tank lid to tank to carburetor exhaust pipe :: Wheels / Tires / Body - Misc. - Step 1 Wheels, Tires, and Foam Wheels, Tires, and Foam Inserts Not Included! Inserts Not Included!
  • Page 28 :: Wheels / Tires / Body - Misc. - Step 2 Install wheel nuts with the Install wheel nuts with the serrated edge serrated edge towards the wheel. towards the wheel. 81082 Wheel Nuts, 17mm (Blue) :: Wheels / Tires / Body - Misc. - Step 3 Painting Tips: 2208 Your kit comes with a clear polycarbonate...
  • Page 29 :: Droop Settings Set droop by measuring overall length of shock (from standoff to shock pin) while the chassis is elevated above your working surface. The shocks should be fully extended. Kit setup for front droop is 105mm shock length, and 126mm shock length for the rear. If the shock length is too long, adjust by turning the droop screws clockwise.

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