Team Losi XXX-NT Sport Owner's Manual
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Team Losi XXX-NT Sport Owner's Manual

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Carefully read through all instructions to familiarize yourself with the parts, construction
techniques, and tuning tips outlined in this manual. Being able to grasp the overall design of
your new XXX-NT Sport RTR II truck before beginning any disassembly process will ensure a successful
rebuild.
Take your time and pay close attention to detail. Keep this manual for future reference.
Service and Technical questions
Radio & Engine:(877) 504-0233 (Horizon Hobby)
A Division of Horizon Hobby Inc.
Chassis only:(909) 390-9595 (Team Losi)
4710 E. Guasti Road, Ontario, CA 91761
www.TeamLosi.com - [email protected]
800-0253
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Summary of Contents for Team Losi XXX-NT Sport

  • Page 1 Carefully read through all instructions to familiarize yourself with the parts, construction techniques, and tuning tips outlined in this manual. Being able to grasp the overall design of your new XXX-NT Sport RTR II truck before beginning any disassembly process will ensure a successful rebuild.
  • Page 2 WELCOME XXX-NT SPORT OWNER! Thank you for choosing the Team Losi XXX-NT Sport as your vehicle to enjoy the exciting world of nitro powered all-terrain racing. The XXX-NT Sport is the result of hundreds of hours of computer-aided design and on-track testing by our world champion development team.
  • Page 3 R/C car racing. FUEL BOTTLE You will need some sort of a fuel bottle in order to fill the tank in your XXX-NT Sport with fuel. Your local hobby shop should have fuel bottles available.
  • Page 4 BAG A Figure 1 Step 1. Place the servo saver bottom (1) over the servo saver post (2) and slide the servo saver bottom all the way against the hex at the opposite end. Be sure that the hex on the servo saver post (2) is inserted into the hex in the servo saver bottom (1).
  • Page 5 BAG A (Continued) Figure 4 Step 8. Insert a 3/32" x 3/16" plastic bushing (13) into the two large, angled holes in the bottom of the front kickplate (14). Insert the other two bushings (13) into the two outer holes in the steering brace (15). Step 9.
  • Page 6 BAG A (Continued) Figure 7 Step 14. Using Table 7C, determine which servo arm (22) is required for your servo. If your particular servo is not listed, try using the arm Ball stud washer recommended for another servo made by the same manufacturer. required for Step 15.
  • Page 7 BAG A (Continued) Figure 8 Step 17. Use the tables in Figure 7B and 7C (on the previous page) to determine how the servo mounting posts (24) should be attached to the servo (not included). Tip: Trim any flashing from the pins on the mounting posts so that they will seat all the way into the holes in the chassis brace and chassis.
  • Page 8 BAG A (Continued) Figure 11 Step 22. Attach one end of the rod to the ball stud (11) in the servo arm (22) and the other to the ball stud (11) in the servo saver top (3) as shown in Figure 11. Figure 11 Figure 12 Step 23.
  • Page 9 BAG A (Continued) Figure 14 Step 26. Place the chassis brace (29) on top of the chassis (19). Pay particular attention to the servo posts (24). The pins in the top of the servo posts (24) should fit into the two holes in the chassis brace (29). Once the chassis brace (29) is lined up and in place, secure it to the chassis (19) with six 4-40 x 3/8"...
  • Page 10 (34). Secure the screws (33) to the shock tower (34) by thread- ing a 4-40 nut (35) over each screw (33) and tightening. Tip: Use the included Team Losi wheel wrench/nut-driver. Step 4. Press a 4-40 mini locknut (7) into the hex area in the top, rear of each side of the front shock tower (34).
  • Page 11 BAG B (Continued) Figure 17 Step 6. Attach the front shock tower (34) to the front bulkhead (32) with four 4-40 x 3/8" cap-head screws (17). The screws (17) thread into the top-most and bottom-most holes in the bulkhead (32). The center holes are not used.
  • Page 12 BAG B (Continued) Figure 19 Step 13. Insert a 3/8" ball stud (38) into the middle hole on top of each spindle carrier (42), (43) from the front as shown, and tighten. IMPORTANT NOTE: Do not overtighten the ball studs! Step 14 .
  • Page 13 BAG B (Continued) Figure 21 Step 20. Hold the chassis assembly upside down. Place the front pivot block (49) over the front edge of the front kick plate (14) as shown in Figure 21. The front lip of the front bulkhead (32) should be positioned in the space between the front pivot block (49) and the aluminum hinge pin brace (52).
  • Page 14 BAG B (Continued) Figure 24 Step 25. Thread a long plastic rod end (54) onto each end of a 2-1/4" turnbuckle (55). Tighten both rod ends (54) equally until the rod is the Figure 24 same length as the rod in Figure 24A. Make two of these tie-rod assemblies.
  • Page 15 BAG C Figure 26 Step 1. Insert a 4-40 mini locknut (7) into the hex area of the diff nut carrier (57). The thread-locking portion of the nut (7) should be to the Figure 26 outside. Figure 27 Step 2. Locate the 5/64" Allen wrench (59) supplied with the kit. Place the diff nut carrier (57), nut side first, over the Allen wrench (59).
  • Page 16 BAG C (Continued) Figure 30 Step 7. Insert a 5mm x 8mm bearing (63) into the center of the diff gear (64). Step 8. Press a 3/32" carbide diff ball (65) into each of the small holes in the diff gear (64). IMPORTANT NOTE: There are two sets of diff balls in Bag C.
  • Page 17 BAG C (Continued) Figure 33 Step 15. Locate the smallest of the Allen wrenches (59) and place it GREASE through the slot in the outdrive/diff half (66) containing the diff screw (67). Slide the wrench all the way against the screw (67). By handling outdrive/diff half (66)
  • Page 18 BAG C (Continued) Figure 35 Step 23. Locate the slipper shaft (73) and thread the 4-40 x 1" setscrew (72) all the way into the threaded side of the slipper shaft (73). Make sure that the setscrew (72) is TIGHT! *NOTE: Some top gear/slipper shaft assemblies may be pre- assembled from the factory.
  • Page 19 BAG C (Continued) Figure 38 Step 30. Insert two 3/16" x 3/8" sealed bearing (80) into the two top bearing seats of the right gearbox half (82). *NOTE: If any of the supplied gearbox bearings only have one Teflon™ seal(colored, woven looking) in it, position the seal to the outside of the gearbox half.
  • Page 20 BAG C (Continued) Figure 41 Step 38. Insert the brake shaft (77) through the 3/16" x 3/8" bearing (80) in the left gearbox half (83), aligning the teeth of the compound gear (79) with the diff gear (64) and top gear (75) as you do. Figure 41 Figure 42 Step 39.
  • Page 21 BAG C (Continued) Figure 43 Step 44. Slide the slipper backing plate (89) over the slipper shaft (73), aligning the flat sections on the slipper shaft (73) with the flat sections of the backing plate (89). Step 45. Place the slipper pad (90) on one side of the spur gear (91) and align the notches on the spur gear (91) with the notches on the slipper pad (90).
  • Page 22 BAG C (Continued) Figure 44 Step 52. Press the .078" x 3/8" spirol pin (78) into the hole in the end of the brake shaft (77) so that it extends evenly from both sides of the shaft (77). Step 53. Slide the brake hub (98) over the brake shaft (77). Align the groove in the brake hub (98) with the pin (78) and slide the hub (98) over the pin (78).
  • Page 23 BAG C (Continued) Figure 46 Step 59. Slide a brake lever clip (101) over the brake lever (102) flange side first. Slide the clip (101) all the way up the brake lever (102) to the sharp bend. Step 60. Slide the other brake lever clip (101) over the end of the brake lever (102) with the flange side facing away from the first brake lever clip (101).
  • Page 24 BAG C (Continued) Figure 48 Step 65. Thread a 8-32 x 1/8" set screw (105) into each of the two holes in the front of the rear pivot block (104). Thread the set screws (104) into the holes until the ends of the set screws just bottom out on the step indside the holes.
  • Page 25 BAG D Figure 51 Attach the dogbones (107) to the plastic universal yokes (106) by lining up the slot on the dogbone (107) with the groove in the univer- yoke (106). Secure pieces with 4-40 x 3/8" cap-head screw (17). Tip: A small amount of thread-lock compound should be used on the threads of the 4-40 x 3/8"...
  • Page 26 BAG D (Continued) Figure 54 Step 5. Thread a 3/8" ball stud (38) into the outer hole in the right rear hub (112) from the side opposite the letter ('L' and 'R') designating left and right. Place a "foam thing" (56) over the ball stud (38). Step 6.
  • Page 27 (123) by threading a 4-40 nut (35) over each screw (33) and tighten- ing.. Tip: Use the included Team Losi wheel wrench/nut-driver to secure the 4-40 nuts. Step 18. Thread a 3/8" ball stud (38) into the center hole on each side of the shock tower (123).
  • Page 28 BAG D (Continued) Figure 58 Step 19. Place the rear shock tower (123) over the rear of the gearbox assembly (82)(83) so that the top holes line up. Place a gold ball stud washer (9) over each of the 4-40 x 1/2" cap-head screws (31). Secure the rear shock tower (123) to the gearbox (82)(83) by threading the 4- 40 x 1/2"...
  • Page 29 BAG D (Continued) Figure 60 Step 21. Attach one end of the rear camber link assembly from Step 19 to the ball stud (38) in the right rear hub (112) and the other end to the ball stud (38) in the rear shock tower (123). Tip: Remember to attach the turnbuckles so that the threads are in the same direction on all your linkages.
  • Page 30 BAG E Figure 62 Step 1. Place one shock O-ring (126) into the cartridge body (127), making sure that the O-ring (126) sits flat on the bottom of the car- tridge body (127). Step 2. Insert the cartridge spacer (128) into the cartridge body (127) followed by a second O-ring (126).
  • Page 31 BAG E (Continued) Figure 64 Step 6. Using needle nose pliers, or small vise grips, grasp the front shock shaft (130) between the grooves and thread a shock end (133) onto the shaft (130). Thread the shock end (133) all the way onto the shaft (130).
  • Page 32 BAG E (Continued) Figure 66 Step 13. Match the short, front shock bodies (137) to the short, front shafts (130), and the long, rear shock bodies (138) to the long, rear shafts (131). Step 14. Fill the shock body (137), (138) with shock fluid (132) up to the bottom of the threads.
  • Page 33 BAG E (Continued) Figure 68 Step 22. Make sure that the dogbones are in the outdrives (47) before continuing. Step 23. Attach the bottom of a rear shock (the longer of the two shocks) to the right rear arm (118) by snapping the shock end (133) over the the shock mount swivel ball (134) that is already attached to the right rear arm (118).
  • Page 34 Be sure to follow the manufacturer's warnings on the bottle. Tip: Team Losi Tread Lock (A-7880) is the best glue available for gluing R/C car tires. This glue was formulated and produced especially for this pupose.
  • Page 35 ENGINE INSTALLATION NOTE: The following steps are shown with a “Side” Exhaust Engine. Other than the header, all mounting of a “Rear” Exhaust Engine is the same. Figure 71 Step 1. Thread a clutch pin/screw (151) into each of the small holes in the flywheel (152) and tighten with a .050"...
  • Page 36 IMPORTANT NOTE: The bearings used in the clutch con- tain a special grease that does not migrate. It is important that these bearings only be replaced with Team Losi's replacement clutch bear- ings. It is also important not to oil the bearings in the clutch. Any oil...
  • Page 37 ENGINE INSTALLATION (Continued) Figure 77/78 Note: Pull Start engine shown. Rear exhaust engine mounts the same. Step 12. Place a ball stud washer (9) over the four 4-40 x 1/2" cap-head screws (31). Insert a 4-40 x 1/2" cap-head screw (31) through the four holes in the engine as illustrated.

  • Page 38: Engine Installation

    ENGINE INSTALLATION (Continued) Figure 79 Step 14. Install the carburetor to the engine as per the instructions supplied with the engine. The carburetor throttle arm should be on the left side of the engine as shown. Check that the arm has equal Note: Side Exhaust engine shown.
  • Page 39 ENGINE INSTALLATION (Continued) Figure 80/81 Step 19. Insert a 4-40 x 1" cap-head screw (169), from the left, through each of the two holes in the middle of the engine. Step 20. Wet your finger with water and lightly moisten the exhaust port gasket (170) and slide it in place over the exaust port of the engine.
  • Page 40 ENGINE INSTALLATION (Continued) Figure 83 Step 25. Adjust the gear mesh between the clutch bell gear (159) and the spur gear (91) by sliding the engine mounts (164) in the slots of the chassis (19). In order to function properly, the gears should be as close as possible, but still have a small amount of backlash (space between the gear teeth).
  • Page 41 ENGINE INSTALLATION (Continued) Figure 86/87 Note: Side Exhaust engine shown. Step 34. Rotate the tuned pipe (175) so that the stinger points down slightly. Secure the tuned pipe (175) to the coupler (174) by wrapping an 8" tie strap (180) around the coupler (174), and the pipe (175), and tightening.
  • Page 42 ENGINE INSTALLATION (Continued) Figure 88 Step 36. Cut an 11" (280mm) length of fuel tubing (176) from the piece supplied. Step 37. Cut one end of the 11" piece of tubing at a 45 angle as shown in Figure 88A. Install the uncut side of the tubing to the forward fitting on the top of the fuel tank (30).

  • Page 43: Radio Installation

    RADIO INSTALLATION Figure 90 Step 1. Cut a piece of two-sided tape (182) to the same size as the bottom of the receiver. Remove the backing from one side of the tape (182) and attach the tape (182) to the bottom of the receiver. Tip: For best results clean the surfaces that the two-sided tape will be attached to with a mild rubbing alcohol.
  • Page 44 RADIO INSTALLATION (Continued) Figure 92 Step 8. Place the battery pack into the battery box (125), so that the power lead is to the right side of the chassis. Cut two small pieces of the battery spacer foam (185) to fit inside the battery box (125) on each side of your battery pack.
  • Page 45 RADIO INSTALLATION (Continued) Figure 94 Rotary Valve Carburetors Step 13. Attach the grommets (supplied with your radio system) to the throttle servo per the radio system instructions. Step 14. Route the servo lead and plug through the slot in the bottom of the forward servo mount (188) and plug it into the slot marked "Channel 2"...
  • Page 46 RADIO INSTALLATION (Continued) Figure 96 Step 17. Remove the two small screws from the switch (supplied with radio system). Place the switch, from the bottom, into the switch mount (189). Step 18. Place the switch top plate (if applicable) over the switch, on top of the switch mount (189).
  • Page 47 RADIO INSTALLATION (Continued) Rotary Valve Carburetors If your engine comes equipped with a rotary valve carburetor, complete the steps in Figure 98 through Figure 104. If your engine comes equipped with a slide valve carburetor, skip ahead to page 47 and complete the steps in Figure 105 through Figure 111.
  • Page 48 RADIO INSTALLATION (Continued) Rotary Valve Carburetors Figure 100 Step 30. For rotary valve carburetors, you will need to remove the straight, shorter arm of the throttle servo horn (190), as shown in Figure 100. Cut off the arm with heavy duty clippers or a Dremel hobby tool.
  • Page 49 RADIO INSTALLATION (Continued) Rotary Valve Carburetors Figure 103 Step 35. Install the throttle linkage Z-bend wire (191) in the top hole of the throttle arm so that the wire is positioned on the side of the arm toward the engine. Step 36.
  • Page 50 RADIO INSTALLATION (Continued) Slide Valve Carburetors If your engine comes equipped with a slide valve carburetor, complete the steps in Figure 105 through Figure 111. Figure 105 Step 24. Thread the 4mm ball cup (204) all the way onto the end of the threaded throttle rod (203).
  • Page 51 RADIO INSTALLATION (Continued) Slide Valve Carburetors Figure 107 Step 30. For slide valve carburetors, you will need to remove the shorter, perpendicular arm of the throttle servo horn (190), as shown in Figure 107. Cut off the arm with heavy duty clippers or a Dremel hobby tool.
  • Page 52 RADIO INSTALLATION (Continued) Slide Valve Carburetors Figure 110 Step 35. Snap the 4mm ball cup (204) onto the ball on the carburetor. Make sure the ball is pointing toward the right side of the truck and slightly upward. Step 36. Press the throttle servo horn (190) and throttle servo spline insert (200) onto the output shaft of the servo, and secure it with the screw included with your servo.
  • Page 53 RADIO INSTALLATION (Continued) Figure 112/113 Step 42. Turn your transmitter switch on followed by the receiver switch (or plug in the extension wire if not using a switch). Step 43. Move the transmitter throttle control to full throttle. The throttle servo should open the carbuertor and push backward on the brake lever.
  • Page 54 RADIO INSTALLATION (Continued) Step 48. Move the steering control on the transmitter to the right. The tires on the truck should turn to the right. If not, refer to your radio manufacturer's instructions for reversing the servos and correct the steering servo. Step 49.

  • Page 55: Final Assembly

    FINAL ASSEMBLY Figure 114 Step 1. Trim the body (205) along the trim lines as shown. Cut out the areas indicated on the front and side windows to allow easy access to the fuel tank. Cut out the area behind the cab to allow for cooling and access to the engine. Step 2.
  • Page 56 FINAL CHECKLIST BEFORE RUNNING YOUR XXX-NT SPORT for the first time, you should run down the following checklist — in order — and complete the listed tasks. This simple checklist will help to make the first run much more enjoyable.
  • Page 57 This is the method most of the team racers prefer. The receiver cover on the XXX-NT Sport offers a great deal of protection from the elements. If you plan on running in very wet conditions you may want to seal your receiver.
  • Page 58 negative camber can make the truck respond quicker on some tracks with hard packed surfaces. The rear camber is used to help the truck drive through bumps in corners a little better. Generally, run between one and two degrees of negative camber at ride height.
  • Page 59 SPARE PARTS LIST KEY # KIT/PART DESCRIPTION PART NO. SPARE PARTS DESCRIPTION Servo saver bottom A-1620 XXX Steering/Servo Mount Assembly (Molded) Servo saver post A-1610 Steering Hardware Set Servo saver top A-1620 XXX Steering/Servo Mount Assembly (Molded) Servo saver spring A-1610 Steering Hardware Set Servo saver spring cap...
  • Page 60 SPARE PARTS LIST KEY # KIT/PART DESCRIPTION PART NO. SPARE PARTS DESCRIPTION Diff coil spring A-2910 "Monster Diff" Diff Screw and Hardware (Sport) Allen wrenches Male outdrive A-2905 "Monster Diff" Male Outdrive Drive Ring A-2903 "Monster Diff" Drive Rings Clear diff grease A-3065 Silicone Differential Compound 5mm x 8mm bearing...
  • Page 61 SPARE PARTS LIST KEY # KIT/PART DESCRIPTION PART NO. SPARE PARTS DESCRIPTION Inner axle spacer A-9941 Bearing Spacer/ Wheel Washer Outer axle spacer A-9941 Bearing Spacer/ Wheel Washer 1/16" x 7/16" pin A-6400 Pins, U-Joint (8) Rear arm right A-2142 Rear Suspension Arms (XXX-NT) Rear arm left A-2142...
  • Page 62 A-9410 Brake/Throttle Linkage Set (XXX-NT) 4mm ball cup A-9410 Brake/Throttle Linkage Set (XXX-NT) Body A-8405 XXX-NT Sport Truck Body - Aqua A-8406 XXX-NT Sport Truck Body - Grape A-8407 XXX-NT Sport Truck Body - Graphite Stickers A-8346 Sticker Sheet XXX-NT...
  • Page 63 Setup Sheet Track: ! Indoor ! Smooth ! Slippery ! Hard Packed Driver: ! Outdoor ! Rough ! High-Bite ! Loose/Loamy ! Blue-Groove ! Tight ! Wet Date: ! Open ! Dry Weather: _________________ FRONT SUSPENSION (Circle or Check the Appropriate Settings) ! In ! Outside # of washers under steering /...
  • Page 64 Setup Sheet Track: ! Indoor ! Smooth ! Slippery ! Hard Packed Driver: ! Outdoor ! Rough ! High-Bite ! Loose/Loamy ! Blue-Groove ! Tight ! Wet Date: ! Open ! Dry Weather: _________________ FRONT SUSPENSION (Circle or Check the Appropriate Settings) ! In ! Outside # of washers under steering /...

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