INTRO STEP I-01 Intro to the 8IGHT Manual Welcome Team Losi 8IGHT Owner! Thank you for selecting the 8IGHT as your new racing buggy. The 8IGHT has already distinguished itself as a top caliber racing chassis and as you will see, we have made every effort to produce a kit that is not only the most competitive but also easy to build and maintain.
INTRO TOOLS REQUIRED FOR ASSEMBLY Team Losi has supplied all necessary Allen wrenches and a special wrenchs that are needed for assembly and adjustments. The following common tools will also be required: Needle-nose pliers, regular pliers, hobby knife, scissors or other body cutting/trimming tools, and a soldering iron may be necessary for radio installation. 3/16”, 1/4”, 5/16”, and 11/32” nut drivers are optional. RADIO/ELECTRONICS A suggested radio layout is provided in this manual.
BAG A STEP A-01 STEP A-02 Steering Link Assembly x1 x1 A9166 Servo Saver Assembly 4-40 x 1/2” L 4-40 x 3/16” Steering Servo Arm A4410 Servo Saver Tube A6043 Rod End Ball Maintenance Tip A4409 A6043 Steering Arm Rod End x1 x1 A4411 5-40 x 5/8” L 4-40 x 3/16” Steering Drag Link A4411 Drag Link Screw x1 4-40 x 1/2” A4409 Steering Bellcrank R A4411 Drag Link Bushing A4409 Steering Bellcrank L A4410 Servo Saver Spring A4410 Servo Saver Nut 2.26" 57.
BAG A STEP A-04 Steering/Top Plate Assembly x1 A4413 5-40 x 1/2” Front Chassis Brace A4424 Front Body Mount x2 5-40 x 1/2” x1 5-40 x 3/8” x4 6x10x3mm STEP A-05 Completed Steering Assembly 2
BAG B STEP B-01 Solid STEP B-03 Ring Gear Assembly A3504 x1 Complete Diff Assembly Fill with 5000wt. oil just above the planetary gear Outdrive Cup 2.5 x 12.80mm x4 3 3x12mm 1 2 x1 F 8x14x4mm A3509 4 Ring Gear A3505 O-Ring A3502 Sun Gear A3505 Diff Seal STEP B-02 Diff Case Assembly Solid A3502 x1 Planetary Gear 2.5 x 12.
BAG B STEP B-04 Front Diff Install x1 • F 8-32 x 1/8” To prevent fine dust from entering the gear box, apply a thin bead of grease along the edge of the case as pictured. 3 4 x2 5x11x4mm A3514 Drive Adapter 1 6 A4427 2 Front Bulkhead x2 5-40 x 7/8” A3508 Pinion Gear, Bevel 5 x2 5-40 x 1/2” A4427 Front Diff Cover STEP B-05 Front Spindle & CV Assembly A3521 Dogbone A3523 1 CV Coupling Solid x1 2.5 x 12.
BAG B STEP B-06 Spindle/Carrier Assembly x1 O 10-32 x 3/8” 2 5 A1700 Left Front Arm 4 A1701 Front Arm Bushing 4 1 2 5 A6501 x2 Hinge Pin 3 8/32 x 3/4” A6050 A1710 Steering Ball Stud Left Spindle Carrier x2 C 5-40 x 3/16” x1 3 5-40 x 1/4” STEP B-07 Front Suspension Arms Assembly A4431 Front Inner Hinge Pin Cap Solid x2 4mm x 65mm A1744 Front Inner Hinge Pin Brace A1744 Front Outer Hinge Pin Brace x4 5-40 x 3/4” A4431 Front Outer Hinge Pin Cap 5
BAG B STEP B-08 Swaybar Assembly Install the Swaybar Ball onto the Swaybar Wire until the end of the wire is flush with the ball as pictured above A1750 x2 Swaybar Link C 5-40 x 1/8” A1750 Swaybar Ball, Arm x2 A4426 4-40 x 5/8” Swaybar Mount Cap x2 C 4-40 x 1/8” A1750 x4 Front Swaybar 2-56 x 1/4” A1750 Swaybar Ball STEP B-09 Tie Rod/Shock Tower Assembly x2 A6048 Suspension Ball, Flanged A1715 L 5-40 x 1/4” Be sure to install the assembled Tierod onto the car with the groove (next to
BAG B STEP B-10 Front Camber Link Assembly Be sure to install the assembled Tierod onto the car with the groove (next to the center square section) on the driver’s left side for easier adjustment later. A6542 Steering Turnbuckle A6050 A6046 Steering Ball Steering Rod End 3.62" 92.00mm STEP B-11 Center CV Assembly Solid x1 3 2.
BAG B STEP B-12 Front Clip Assembly x2 5-40 x 3/4” x2 5-40 x 3/4” 4 1 A4426 Front Bulkhead Space 3 2 x4 8-32 x 1/2” A4422 Front Bumper STEP B-13 Completed Front Assembly 8
BAG C STEP C-01 STEP C-03 Ring Gear Assembly Solid Complete Diff Assembly Fill with 7000wt. oil just above the planetary gear x1 2.5 x 12.
BAG C STEP C-04 STEP C-05 Center Top Brace Assembly (.5mm)(.020) x1 Linkage Assembly x2 5mm E-Clip 5-40 x 1/8” A4415 Top Brace, Center Diff A9166 Front Brake Actuator A9166 Threaded Servo Rod x1 A9166 Throttle Rod End 2-56 x 1/2” A9166 Rear Brake Rod x2 .250x.
BAG C STEP C-08 Brake Caliper Assembly A3541 Front Brake Pad 0.230" 5.
BAG C STEP C-10 Center Diff Installation Caution! Ensure that the driveshaft is inserted into the slot of the center outdrive while installing the Center Diff. assembly.
BAG D STEP D-01 STEP D-03 Ring Gear Assembly Complete Diff Assembly Fill with 2000wt. oil just above the planetary gear A3504 Outdrive Cup Solid x1 2.5 x 12.80mm 1 3 x4 3x12mm x1 F 8x14x4mm 2 A3510 A3505 4 Rear Ring Gear O-ring A3502 Sun Gear A3505 Diff Seal A3502 Planetary Gear STEP D-02 Diff Case Assembly A3502 Sun Gear A3505 Solid O-ring x1 2.5 x 12.80mm 3 4 Tighten the diff screws in this order.
BAG D STEP D-04 Rear Diff Installation x1 F 8-32 x 1/8” A3514 Drive Adapter x1 5-40 x 7/8” 4 3 A4414 A4429 Rear Chassis Support 5 x2 Bearing Insert, LR 5x11x4mm 1 x1 L 5-40 x 1/4” 2 A4428 Rear Bulkhead x2 A3508 5-40 x 7/8” Pinion Gear 6 5 A4429 Bearing Insert, RR A4428 Rear Bulkhead Cover 7 STEP D-05 Rear Hub & CV Assembly A3521 Driveshaft Solid 1 x1 2.5 x 12.
BAG D STEP D-06 Rear Suspension Arm Assembly Solid x2 x2 4mm x 65mm 5-40 x 1-7/8” A4431 Rear Outer Pivot Brace Cap A1746 3Toe/2 Anti-Squat Pivot Brace A6500 Hinge Pin x2 O 10-32 x 3/8” x2 A1722 5/40 x 3/4” Left Rear Arm A4431 Rear Inner Pivot Brace Cap A6502 Hinge Pin A1745 Rear Inner Pivot Brace x1 L 5-40 x 1/4” A4426 Hub Spacer .
BAG D STEP D-08 Wing Mount Assembly A4435 Wing Mount Brace A4435 Right Wing Mount x4 5-40 x 3/4” x2 L 5-40 x 1/4” A4435 Left Wing Mount x3 5-40 x 1/2” A5438 A4424 Shock Stand-Off Rear Body Mount x2 L 8-32 x 11/32 A1736 Rear Shock Tower STEP D-09 Rear Shock Tower Installation x2 5-40 x 3/4” x2 5-40 x 1/2” 16
BAG D STEP D-10 Tie Rod Installation A6048 Suspension Ball, Flanged A6047 Rod End A6541 Turnbuckle, Rear x1 A6049 5-40 x 3/4” Suspension Ball A6047 Offset Rod End x2 x2 4.07" 103.4mm 5-40 x 1/4” L 5-40 x 1/4” x1 5-40 x 1” STEP D-11 Center CV Assembly Solid A3527 CV Coupling, Center x1 2.
BAG D STEP D-12 Rear Clip Assembly x2 L 5-40 x 1/4” Caution! Ensure that the driveshaft is inserted into the slot of the center outdrive while installing the Rear Clip assembly.
BAG E STEP E-01 • • • • • • • • • • • • • • Shock Assembly Clean the 2-56 x 1/4” Button Head Screw and apply loctite to the threads. Install the #55 Shock Piston using the 2-56 x 1/4” Button Screw into the Shock Shaft with a .050” Allen Wrench Place a drop of Shock Oil into the bottom of the Shock Body to lubricate the Shock Seals. Thread the Shock Shaft into the Shock end using pliers. Used caution when threading the Shock Shaft Ends onto the Shafts.
BAG E STEP E-02 x2 x2 Front Rear Shock Boot & Spring Assembly A5426 A5426 Shock Boot Shock Boot A5451 Silver Front Spring A5458 Green Rear Spring A5434 Spring Cup A5434 Spring Cup STEP E-03 Front Shock Installation A5434 Shock Mount Bushing x2 L 5-40 x 1/4” x2 5-40 x 3/4” 20
BAG E STEP E-04 Rear Shock Installation A5434 Shock Mount Bushing x2 L 5-40 x 1/4” x2 5-40 x 3/4” STEP E-05 Completed Shock Assembly 21
BAG F STEP F-01 Chassis Guard Installation A4425 Chassis Guards x5 5-40 x 3/8” STEP F-02 Switch Installation x3 Supplied w/switch (not included) 4-40 x 3/8” Optional Blank Switch Mount Plate If not using a switch, install the optional Blank Switch Mount Plate in place of the Switch Plate.
BAG F STEP F-03 Servo Chart/Wiring Diagram Servo Spacer Servo Horn JR All (DZ9000T/S Needs Spacer ) No 23T Airtronics Sanwa 94357Z, 94358Z, 94649Z, 94360Z, 94452Z, 94758Z, 94737Z, 94738Z Yes 94102Z, 94112Z Yes Hitec All No 24T Futaba All (S9102 DOES NOT FIT) No 25T KO PDS-2123, 2344, 2363, 2365, 2366 Servo Manufacturer, Make/Model Steering Servo Wires 23T No No Throttle Servo Wires Switch Wires 23T Table2: Servo assembly and installation STEP F-04 Throttle Servo Installati
BAG F STEP F-05 Steering Servo Installation x4 A9166 4-40 x 1/2” Servo Horn Insert x4 #4 x .
BAG F STEP F-07 Receiver Battery Door Optional Battery Covers High Profile Cover should be used with Hump pack type receiver packs. Low Profile Cover should be used with Li-Po type receiver packs.
BAG F STEP F-09 Servo Horn Installation Supplied w/servo (Not Included) Ensure the servo gear is centered before attaching the Servo Horns. This is best accomplished by connecting the servo’s to the radio system and setting the trim to center.
BAG G STEP G-01 Clutch Assembly A9107 Composite Clutch Shoe A9114 Clutch Spring Gold A9101 Flywheel A9103 Plastic Shoe Clutch Nut 1 Aluminum Shoe A9115 Clutch Spring Silver Blue 2 A9108 A9104 Aluminum Clutch Shoe Clutch Pin STEP G-02 Clutch Bell Assembly Use the approriate number of shims to achieve proper clutchbell x2 end play x1 5x13x4mm 5x7x0.2mm x1 5x7x0.
BAG G STEP G-03 Engine Mount Assembly x4 5-40 x 1/2” x4 Ball Stud Pipe/Header (Not Supplied) A9154 Right Engine Mount A9154 Left Engine Mount STEP G-04 Air Filter Assembly 1 2 A9151 Secondary Air Filter A9151 Primary Air Filter A9150 Air Filter End Cap x1 4-40 x 3/8” 28 A9150 A9150 Air Filter Body Air Filter Boot
BAG G STEP G-05 Air Filter Installation 1 2 STEP G-06 Pipe Mount Assembly A9165 x1 8-32 x 1/8” Pipe Wire Mount A9165 Pipe Wire x1 8-32 x 3/8” 29 Trim pipe mount in small increments as needed to mount pipe. Ensure that the wire clears all steering components.
BAG G STEP G-07 • • • • Engine Installation Adjust the Gear mesh between the Clutch Bell and the Spur Gear by sliding the Engine Mounts in the slots of the Chassis. In order to function properly, the Gears should be as close as possilbe, but still have a small amount of backlash (space between the Gear teeth). Place a piece of paper between the Clutch Bell Gear and Spur Gear, Slide the engine sideways until the paper is pinched between the Gears and Tighten the engine mount Screws.
BAG H STEP H-01 Tire Mounting 1 2 A7760S Step Pin Tire, Silver 1/8 Buggy Foam Insert Only sold with Tires A7751 1/8 Buggy Wheel, Yellow STEP H-02 • • Tire Gluing The Tires need to be glued to the wheels. This can be done by using a fast-curing super glue or cyanoacrylate glue (LOSA7880, LOSA7881), available at your local hobby shop. Install a Tire gluing rubber band around the outside of the Tire, in line with the bead to hold it onto the Wheel.
BAG H STEP H-03 Tire Installation A3531 Wheel Hexes STEP H-04 Wing Installation 1 A8130 Wing Button x2 Body Clip A8130 Rear Wing 2 32
BAG H STEP H-05 Body Painting & Trimming Painting: Prepare the Lexan® Body and Wings for painting by washing them thoroughly (inside and out) with warm water and liquid detergent. Dry both the Body and Wings with a clean, soft cloth. Use the supplied Window Masks to cover the windows from the inside. A high-quality masking tape should be used on the inside of the Body to mask off any stripes, panels, or designs that you wish to paint on the Body or Wings.
BAG H STEP H-06 Body Mounting x2 Body Clip 34
BAG H STEP H-07 Completed Chassis Assembly 35
CHECKLIST BEFORE RUNNING YOUR NEW 8IGHT OFF-ROAD RACING BUGGY for the first time, you should run down the following checklist in order and complete the listed tasks. We’re sure you’re anxious to get out and run your new 8IGHT now that its built, but please note that fine tuning of the initial setup is an essential part of building a high performance racing buggy such as your new 8IGHT. Following this simple Checklist and the Team Tips will help to make the first run with your new car much more enjoyable. 1.
SETUP GUIDE TIPS AND HINTS FROM THE TEAM Before you start making changes on your 8IGHT Off Road Racing Buggy, you need to make a few decisions. Tires, and how they are setup, have a tremendous impact on overall performance. Before you start making changes on the chassis setup, take a movement to observe a few of the fastest cars at the track and what type of tire and inner liner they are running. When making chassis changes, you should first decide where you feel the car needs to be different.
SETUP GUIDE bite / smooth tracks, thick oil is easier to drive. Make sure you adjust oil when there is a drastic temperature change (20-25 degrees). If it gets cold outside you need to go to lighter shock oil. If it gets hotter outside you need to go to thicker weight shock oil. Front Toe: More front toe-in (longer steering rods) decreases steering response entering and in the middle of the turn. More toe-in also increases on power steering.
SETUP GUIDE Setup Notes: ____________________________________________________________________________________________________ ________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________________ _____________
SETUP SHEET Date: Name: City: State: Track Tight Indoor Conditions Outdoor Open Event: Track: Smooth Hard Packed Blue Groove Wet Rough Loose/Loamy Dry Dusty Front Suspension Toe: Ride Height: Camber: Caster: Sway Bar: Piston/Oil: Spring: Limiter/Droop: Overall Shock Length: Steering Ackerman: Bump Steer: Camber Link: Shock Location: Front Diff Fluid: Receiver Battery Type: Low Bite Med Bite High Bite Other Ackerman Bump Steer Long Short Up Down 3 2 1 Outside In
KIT SETUP Name: Standard Kit Date: City: State: Track Tight Indoor Conditions Outdoor Open Event: Track: Smooth Hard Packed Blue Groove Wet Rough Loose/Loamy Dry Dusty Front Suspension Toe: 1° Out Ride Height: 27mm Camber: -1° Caster: 20° Sway Bar: 2.32mm Piston/Oil: 55/35wt. Team Losi Spring: 4.4 Silver Limiter/Droop: Overall Shock Length: 4.100” Steering Ackerman: Long Bump Steer: Down Camber Link: #2 Shock Location: #2/Inside Front Diff Fluid: 5000wt.
HARDWARE Cap Head Flat Head 1 2-56 x 1/4” (A6232) Flat Head 2 Button Head 2-56 x 1/4” (A6255) 3 x 8mm (A9104) 8-32 x 3/8” (A6264) 2-56 x 1/2” (A6254) 4-40 x 1/4” (A6234) 3 x 12mm (A3500) 4-40 x 3/8” (A6206) 4-40 x 1/2” (A6256) 8-32 x 3/8” (A6262) 5-40 x 3/8” (A6270) 4-40 x 1/2” (A6204) 4-40 x 5/8” (A6221) 5-40 x 3/8” (A6277) 5-40 x 1/2” (A6271) 5-40 x 1/2” (A6278) 5-40 x 1-7/8” (A6273) 5-40 x 1/2” (A6240) 5-40 x 3/4” (A6279) 5-40 x 3/4” (A6272) 5-40 x 1” (A6279) 5-40 x 7/8” w/ 5/8” Shou
