Rival Mt8 4wd Monster Truck Instruction Manual

MT8 4WD Monster Truck

Product Information

The Rival MT8 is a Ready-to-Run (RTR) remote-controlled (RC)
monster truck manufactured by Associated Electrics, Inc. It comes
with a pre-assembled chassis, body, and electronics, and requires
additional items for completion.

Features

• Pre-painted and trimmed body
• 2.4GHz radio system
• Waterproof electronics
• Rechargeable battery and charger
• Oil-filled shocks
• Four-wheel drive system
• High-torque servo

Hardware

The user manual includes a 1:1 hardware foldout page that
contains drawings of the various hardware parts used in the
vehicle. Each part is assigned a number for ordering replacement
parts.

Battery Charging Safety

• Remove the battery from the vehicle before charging.
• Place the battery on a fire-resistant surface.
• Avoid contact with water or other liquids.
• Select the correct charging mode for the battery type.
• Use a compatible charger for charging the batteries.
• Never leave the battery unattended while charging.
• Always disconnect the charger from the power source when
  finished charging.

Product Usage Instructions

Battery Installation

1. Install the battery with the battery wires directed towards the
   rear of the vehicle.
2. Secure the battery strap using two hook and loop straps.

Note: Always disconnect the battery when not in use.

Battery Charging

Charge the battery with a compatible charger for the battery
type. Always use the correct charging mode for the battery type.
Follow the safety instructions provided in the user manual.

LiPo Battery Charging

LiPo batteries require a peak detection charger designed
specifically for LiPo batteries. These batteries require special
care and handling. LiPo batteries are recommended for advanced
users only! ALWAYS charge a LiPo battery in LiPo mode.

Radio System Tuning and Controls

Follow the rule of turning on the transmitter first and then
turning on the vehicle. When turning off, turn off the vehicle
first and then turn off the transmitter. Install alkaline or
rechargeable AA size batteries in the transmitter.

AssociatedElectrics.com

2

:: Introduction

Thank you for purchasing this Team Associated product. This assembly manual contains instructions and tips for building and maintaining your new vehicle. Please take a moment to read through the manual and familiarize yourself with the steps. We are continually changing and improving our designs; therefore, actual parts may appear slightly different than the illustrations. New parts will be noted on supplementary sheets located in the appropriate parts bags. Check each bag for these sheets before you start to build.

:: Rival MT8 RTR Features

· 4mm thick aluminum main chassis · 22 precision ball bearings · Heavy duty hardened steel CVA axles · 16mm Big Bore threaded aluminum shock bodies · Sealed drivetrain · Three heavy-duty sealed silicone filled gear differentials · Rigid aluminum center chassis supports · Aluminum suspension braces · Four position adjustable wheelie bar · All metal gear drivetrain · Rugged steel turnbuckles · High torque digital servo · Metal servo horn · Single 6S or 4S ready 150A ESC · 2100kv high torque brushless motor

:: Table of Contents 1………………. Cover

6 – 19…………Steps 1- 41

2………………. Introduction

21……………..Tuning Tips

3……………….1:1 Hardware “Fold Out”

22……………. Back Cover

4 – 5…………. Quick Start Guide
:: Notes
There is a 1:1 hardware foldout page in the front of the manual. To check the size of a part, line up your hardware with the correct drawing until you find the exact size. Each part in the foldout has a number assigned to it for ordering replacement parts.

!

This symbol indicates a special note or instruction in the manual.

:: Additional

Your new Rival MT8 comes assembled. The following items are needed for completion.

· 4S or 6S LiPo battery · Suitable battery charger

· (4) AA batteries

Tools included: · 1.5mm, 2.0mm, 2.5mm Wrenches

:: Other Helpful Items

· Silicone Shock Fluid (Refer to catalog for complete listings) · Silicone Diff Fluid (Refer to catalog for complete listings)

· Body Scissors (AE Part # 1737)

· Reamer / Hole Punch (#1499) · Shock Pliers (#1675)

· Wire Cutters

· FT Hex/Nut Wrenches (AE Part # 1650)· 17mm Wheel Wrench (#1571)· Needle Nose Pliers

· Hobby Knife

· Calipers or a Precision Ruler

· Green Slime shock lube (AE Part # 1105)

· Soldering Iron

· FT Turnbuckle Wrench (#1114)

· FT Universal Tire Balancer (#1498)

Associated Electrics, Inc. 21062 Bake Pkwy.
Lake Forest, CA 92630

Customer Service Tel: 949.544.7500 Fax: 949.544.7501

http://www.RC10.com · http://twitter.com/Team_Associated · http://www.instagram.com/teamassociatedrc/ · http://www.facebook.com/TeamAssociated/

3

:: Hardware – 1:1 Scale View

Button Head (bhcs)

Flat Head (fhcs)

2.5x6mm (31520) 3x5mm (31530) 3x8mm (31532)
3x10mm (25211) 3x12mm (89202) 3x14mm (25187) 3x16mm (89203)
3x18mm (2308) 3x20mm (25188) 3x26mm (89205)
4x8mm (81265)

4x10mm (89206)

Ball Bearings
2.5x8mm (31448) 3x6mm (31541) 3x8mm (25201)
3x10mm (25202) 3x12mm (25203) 3x25mm (89243) 4x10mm (81262)
4x12mm (89214)
4x14mm (89217)
4x16mm (81263)

5x8x2.5mm (8680) 8x16x5 (91564)
12x18x4 (25843) 10x19x5mm (25940)

4x12mm (89207) 4x14mm (81260)

Set Screws

4x16mm (81261)

4x20mm (81266)

3x3mm (25225) 4x3mm (25223)

Nuts (lock/plain)
Plain M3 Nut (91477) M3 Alum. Locknut, Blue (31550)
M3 Locknut, Black (25215)

4x20mm (89245)

M5 Locknut w/Flange (25837)

Socket Head (shcs)

3x35mm (25653) 5x85mm (25946)

Notes:

4
:: Quick Start Guide Battery Charging Steps and Safety:
Remove the battery from the vehicle before charging. Place battery on a fire resistant surface. Avoid any contact with water or other liquids. Be sure to select the correct charging mode for the type of battery you are charging.
ALWAYS use a compatible charger for charging your batteries.
Caution: Never leave the battery unattended while charging. Always disconnect the charger from the power source when finished charging.
Caution: Always disconnect the battery when you are finished driving the vehicle.

:: Quick Start Guide – (cont.) Battery Installation:
1. Install the battery with the battery wires directed towards the rear of the vehicle.
2. Secure the battery strap using two hook and loop straps.
1

2

Peak Detection Quick Charger

:: Quick Start Guide – (cont.)
Battery Notes and Tip:
Connect the battery as shown. Disconnect the battery when not in use!
LiPo: LiPo batteries (lithium polymer) are high current rechargeable batteries. LiPo batteries offer extended run time and peak performance over NiMH batteries. They require a peak detection charger designed specifically for LiPo batteries. These batteries require special care and handling. LiPo batteries are recommended for advanced users only! ALWAYS charge a LiPo battery in LiPo mode.

3/22

5

:: Quick Start Guide – (cont.)
Radio System Tuning and Controls:
RULE: Transmitter on First/Vehicle on Second, Vehicle off First/ Transmitter off Last!
1) Slide the battery cover to remove cover. 2) Install alkaline or rechargeable AA size
batteries into the battery holder. 3) Slide the battery cover back into place making
sure it is completely closed and secure. 4) Turn the power ON. If the power indicator LED
fails to light, check the batteries for insufficient contact or incorrect polarity.

:: Quick Start Guide – (cont.) Radio System Tuning and Controls:
DO NOT hold the trigger when turning on the radio.
Refer to Radio owners manual for more in-depth instructions on radio operation and functions.

On/Off Switch

Push trigger for Brake

Pull trigger for Throttle
Throttle set to Neutral!

Neutral

Adjust steering

trim so front

wheels point

straight.

Install body and body clips.

Ready to go!

6

:: Step 1
25926 x2 Sun Gear
Shim

25926 x2 Sun Gear
Shim

25926 Diff
O-Ring

25926 Diff
O-Ring

25923 Diff Case

25924 Ring Gear,
38T

25926 Bearing 10x19x5

25926 Outdrive
Shim

25926

Outdrive

25926

Build 2 (1 front, 1 rear) Outdrive

25926 Sun Gear
25926 Input Pin
25926 Bearing 10x19x5

:: Step 2
25926 x4 Planetary
Gear 25926 x2
Diff Cross Pin

25926 x4 Planetary Gear Shim

25203 x4 3x12mm
FHCS

25926 x4 Cross Pin
Insert

25926 Diff Gasket

25926 Sun Gear
25926 Input Pin
dfilfufid
Front Diff Fluid: 60k cst #5458 Rear Diff Fluid: 30k cst #5457

:: Step 3
25926 x2 Sun Gear
Shim
25926 Diff
O-Ring

25926 Sun Gear
Shim
25926 Diff
O-Ring

25926 Bearing 10x19x5
25926 Outdrive

25923 Diff Case

25925 O-Ring

Build 1 (1 center)

25926 Bearing 10x19x5
25926 Outdrive
25925 O-Ring

25926 Sun Gear
25926 Input Pin
25904 Spur Gear,
48T

25926 Sun Gear
25926 Input Pin

:: Step 4
25926 x4 Planetary
Gear 25926 x2
Diff Cross Pin

25926 x4 Planetary Gear Shim

25203 x4 3x12mm
FHCS

25926 x4 Cross Pin
Insert

25926 Diff Gasket

7
Center Diff Fluid: 100k cst #5459

:: Step 5
25918 x2 E-Clip, 2.5mm
25918 Shock Piston

25933 Shock Shaft Front – Short

25933 Shock Shaft Rear – Long

Front x2

Rear x2

25944 Shock Body Front – Short

25943 Shock Body Rear – Long

25920 x2 Shock O-Ring
25920 Shock Seal
Bushing
25918 Shock Bottom
Cap

:: Step 6
25918 Shock
Cap 25920 Shock Bladder
fsluhiodck

!
Leave a gap when installing the shock cap.

Front Shock Fluid: 50wt #5435
Rear Shock Fluid: 50wt #5435

!
Compress shock shaft half way. Let shock fluid bleed from cap,
then tighten cap.
For less rebound, compress shock shaft farther before tightening the shock cap.
For more rebound, do not compress shock shaft as far before tightening the shock cap.

25920 Uptravel
Spacer
25918 Shock Eyelet 25918
Pivot Ball, Long
!
Some residual shock fluid may appear
around the shock cap after the first few runs as a result of bleeding.

8
:: Step 7
25942 Spring Collar O-Ring

Front x2 Rear x2

1mm

6mm

25942 Spring Collar

25934 MT8 Shock
Springs

fsluhiodck

25918 Spring
Cup

:: Step 8
25925 Pinion Gear Outdrive Shaft 25843 Bearing 12x18x4mm
25201 3x8mm
FHCS

25925 Pinion Gear,
13T

25925 Input Spline

25928 Arm Mount

25910 Arm Mount
Cover

89203 x2 3x16mm
BHCS

25925 x2

25940 Bearing

O-Ring 3.8×1.8mm 25908

10x19x5mm

Gearbox

Cap, Front

25908

Gearbox

25908 Gearbox Bottom

89203 x2 3x16mm
BHCS

:: Step 9

25928 Arm Mount
25910 Arm Mount
Cover
89203 x2 3x16mm
BHCS

25938 Hinge
Pin

25911 MT8 Front
Arm

25914 x2 Body Mount
Pivot

25928 Arm Shim 10x4x0.2mm

25914 x2 Body Post

25187 x2 3x14mm
BHCS

25914 Body Mount Front

25187 x2 3x14mm
BHCS

:: Step 10

81260 x2 4x14mm
BHCS

25215 x2 M3
Locknut

25187 x4 3x14mm
BHCS
:: Step 11

25909 Front Shock
Tower

9
81260 x2 4x14mm
BHCS

25909 Center Brace Mount

25225 3x3mm Setscrew
25931 MT8 CVA
Bone 25931
MT8 CVA Axle

25931 CVA
Barrel

25931 MT8 CVA
Pin
:: Step 12

25915 MT8 Caster Block, Left

25931 MT8 Shaft
Cover

89207 x2 4x12mm
BHCS

25937 x2 Hat
Bushing

25915 MT8 Steering
Block, Left

91564 x2 FT Bearing 8x16x5mm

25932 MT8 Hex Adapter

25932 MT8 Hex Drive Pin
25223 4x3mm Setscrew

10
:: Step 13
25938 3x48mm Hinge Pin
Screw
:: Step 14

25917 MT8
Upper Arm

25917 Turnbuckle
38mm

25917 MT8 Pivot
Ball

25215 M3
Locknut

25917 Turnbuckle
Rod End
Upper Turnbuckle 18mm
Build x2 (right and left side)

25938 Hinge Pin 3.5x25mm
31530 3x5mm
BHCS

25188 3x20mm
BHCS

25215 M3
Locknut

:: Step 15
25910 Arm Mount
Cover, C 25843 Bearing 12x18x4mm
25201 3x8mm
FHCS

25925 Pinion Gear, 13T

25925 Input Spline

25925 Pinion Gear Outdrive Shaft

25925 x2 O-Ring 3.8×1.8mm
25940 Bearing 10x19x5mm

89203 x2 3x16mm
BHCS

25928 25908 Arm Mount Gearbox

25908 Gearbox 89203 x2 Bottom 3x16mm
BHCS

25908 Gearbox Cap, Rear

:: Step 16

25928 Arm Mount
25910 Arm Mount
Cover, D
89203 x2 3x16mm
BHCS

25914 x2 Body Mount
Pivot

25938 Hinge
Pin

25928 Arm Shim 10x4x0.2mm
25911 MT8 Rear
Arm

25914 x2 Body Post
25914 Body Mount Rear

:: Step 17
89207 x2 4x12mm
BHCS

25909 Center Brace Mount

81260 x2 4x14mm
BHCS

25215 x2 M3
Locknut

11
25187 x2 3x14mm
BHCS
25187 x2 3x14mm
BHCS
81260 x2 4x14mm
BHCS

:: Step 18

25187 x4 3x14mm
BHCS

25909 Rear Shock
Tower

25225 3x3mm Setscrew
25931 MT8 CVA
Bone 25931
MT8 CVA Axle

25931 CVA
Barrel

25931 MT8 CVA
Pin

25931 MT8 Shaft
Cover

12
:: Step 19
91564 x2 FT Bearing 8x16x5mm
:: Step 20
25938 3x48mm Hinge Pin
Screw
:: Step 21

25915 MT8 Hub
Rear
25932 MT8 Hex Adapter

25932 MT8 Hex Drive Pin
25223 4x3mm Setscrew

25917 MT8
Upper Arm

25917 Turnbuckle
44mm

25917 Turnbuckle
Rod End

25215 M3
Locknut

25917 MT8 Pivot
Ball
Rear Camber Turnbuckle 24.50mm
Build x2 (right and left side)

25938 Hinge Pin 3.5x25mm
31530 3x5mm
BHCS

25188 3x20mm
BHCS

25215 M3
Locknut

:: Step 22
81265 x4 4x8mm
BHCS
:: Step 23
25906 Steering Bellcrank
Mount 25211 x2 3x10mm BHCS

25929 MT8 Chassis
25903 x2 MT8 Chassis Skid Plate

25916 x2 Steering
Posts

25916 x2 MT8
Bellcrank

13
25901 x2 MT8 Chassis
Side Rails
25202 x9 3x10mm
FHCS
8680 x4 FT Bearing 5x8x2.5mm

89214 x2 4x12mm
FHCS
:: Step 24
25916 Servo Saver
Nut 25916 Servo Saver Spring
25916 Servo Saver
Arm, A

25916 x2 Spring Washer
25916 Servo Saver
Arm, B

25916 Steering
Rack
25937 x2 Steering Rack Hat Bushing

2.5mm

89203 x2 3x16mm
BHCS
25612 x2 M3 Locknut,
Flanged

14
:: Step 25
25906 MT8 Top
Plate

25211 x2 3x10mm
BHCS

:: Step 26
31532 3x8mm
BHCS 25907 Gear Cover
:: Step 27

25936 MT8 Motor
Mount
81262 4x10mm
FHCS 25203
3x12mm FHCS
25907 Gearbox
Cap

25907 Center Gearbox 25907 Center Gearbox
Seal
89214 x4 4x12mm
FHCS
89207 x4 4x12mm
BHCS
25203 x3 3x12mm
FHCS

25925 Center Driveshaft

25187 3x14mm
BHCS
25903 Skid Plate,
Rear
81263 x2 4x16mm
FHCS

89217 x2 4x14mm 89243 x2 FHCS 3x25mm FHCS

:: Step 28
89245 x2 4x20mm Set Screw

25935 x2 Center Brace Rod
End
25935 Center Brace

:: Step 29

15
81266 x2 4x20mm
BHCS

:: Step 30

25925 Center Driveshaft

25903 Skid Plate,
Rear
81263 x2 4x16mm
FHCS
89243 x2 3x25mm
FHCS

89217 x2 4x14mm
FHCS

89207 x2 4x12mm
BHCS

25187 3x14mm
BHCS

16
:: Step 31

25917 x2 MT8 Pivot
Ball

25917 Turnbuckle,
44mm

25917 x2 MT8 Turnbuckle
Rod End

Steering Turnbuckle 43.50mm

Build x2 (right and left side)
:: Step 32

2308 3x18mm
BHCS
89203 3x16mm
BHCS

25918 Shock Pivot
Ball

89205 3x26mm
BHCS

25188 3x20mm
BHCS
Build x2 (right and left side)

:: Step 33
25913 x2 Light Bucket Cap
25939 Front LED

25913 MT8
Bumper Brace

89202 x4 3x12mm
BHCS

31448 x2 2.5x8mm
FHCS

25913 MT8
Bumper

25913 x2 Bumper Support
Brace

25918 Shock Pivot
Ball
89205 3x26mm
BHCS 25188 3x20mm BHCS
89203 x2 3x16mm
BHCS
25215 x2 M3 Locknut

89202 x2 3x12mm
BHCS

:: Step 34
25653 3x35mm
SHCS

25939 Rear LED

25912 x2 Wheelie Bar Arm
25912 Wheel Brace

25912 x2 Wheelie Bar Brace

:: Step 35

89206 x2 4x10mm
BHCS

25946 5x85mm
SHCS

25912 x4 Wheelie Bar Wheel Hub

17

31520 x2 2.5x6mm
BHCS
25215 M3 Locknut

25912 x2 Wheelie Bar Wheel

25945 M5 Flanged
Lock Nut

31541 x2 3x6mm
FHCS

25905 ESC Tray

25800 Receiver
Box

25211 x2 3x10mm
BHCS
:: Step 36
31532 x8 3x8mm
BHCS

89207 x2 4x12mm
BHCS
89506 x2 Hook and Loop Straps
25905 x2 Battery
Box

Motor

25201 x2 3x8mm
FHCS
12mm

25936 Motor Mount Slide
25223 4x3mm Set Screw

89214 x2 4x12mm
FHCS 25927 Mod-1 Pinion

18
:: Step 37
25914 Wire Loop
:: Step 38

81261 4x16mm
BHCS

31532 3x8mm
BHCS
81261 x2 4x16mm
BHCS
Set The Gear Mesh:
To set the gear mesh, rock the spur gear back and forth without making the pinion gear move. Exessive amounts of spur gear movement (loose gear mesh) will cause premature gear failure. If the spur gear mesh is tight, there will be no movement between the spur and pinion gears. A gear mesh that is too tight or too loose will reduce power and damage the gear teeth.

25906 Servo Mount

Servo

31532 x4 3x8mm
BHCS

:: Step 39

25202 x4 3x10mm
FHCS
25917 x2 MT8 Pivot
Ball

25917 Turnbuckle,
50mm

25917 x2 MT8 Turnbuckle
Rod End

Servo Turnbuckle 30.50mm

31532 3x8mm
BHCS

25187 x2 3x14mm
BHCS
25930 Servo Horn

:: Step 40
89245 x2 4x20mm Set Screw

25935 x2 Center Brace Rod
End
25935 Center Brace

81266 x2 4x20mm
BHCS

19

:: Step 41
Receiver
6727 Servo Tape

25225 M3x3mm Set Screw
6338 Antenna
Tube, 12″
6332 Body Clip

Switch ESC

6727 Servo Tape

:: Step 42

Battery
!
Carefully apply ca glue (tire adhesive) to the tire bead on the side. Do one side at a time, allowing it to dry before gluing the
other side! CA glue not included!

25919 MT8 Tire (pre-glued)
#1597 ca glue

25919 MT8 Insert

25919 MT8 Wheel

Build 4

20
:: Step 43 Install 4

25932 x2 Black Nut Serrated Aluminum
17mm

25900 Rival MT8
Body, Painted

25919 x2 MT8 Axle
Cover
:: Step 44
25900 x2 Rival MT8 Roof Skid

25900 MT8 Grill

25900 MT8 Grill
Mount

25900 MT8 Bed
Cage

25900 MT8 Rear
Spoiler

25900 x2 MT8 Bed Cage Mount 31532 x4 3x8mm BHCS
2208 x4 Body Clip

31532 x7 3x8mm
BHCS

25900 MT8 Rear
Spoiler Mount

21
:: Tuning Tips
Tips for Beginners:
Before making any changes to the standard setup, make sure you can get around the track without crashing. Changes to your vehicle will not be beneficial if you can’t stay on the track. Your goal is consistent laps. Once you can get around the track consistently, start tuning your vehicle. Make only ONE adjustment at a time, testing it before making another change. If the result of your adjustment is a faster lap, mark the change on the included setup sheet (make adddtional copies of the sheet before writing on it). If your adjustment results in a slower lap, revert back to the previous setup and try another change. When you are satisfied with your vehicle, fill in the setup sheet thoroughly and file it away. Use this as a guide for future track days or conditions. Periodically check all moving suspension parts. Suspension components must be kept clean and move freely without binding to prevent poor and/or inconsistent handling.
Set The Gear Mesh:
You should be able to rock the spur gear back and forth in the teeth of the pinion gear without making the pinion gear move. If the spur gear mesh is tight, then loosen the #81261 screw and move the motor away, then try again. A gear mesh that is too tight or too loose will reduce power and damage the gear teeth.
Front Camber:
Camber describes the angle at which the tire and wheel rides when looked at from the front. Negative camber means that the tire leans inward at the top. A good starting camber setting is -1°. Positive camber, where the top of the tire is leaning out, is not recommended.
Rear Camber:
Camber describes the angle at which the tire and wheel rides when looked at from the back. Negative camber means that the tire leans inward at the top. A good starting camber setting is -1°. Adding a small amount of positive camber, where the top of the tire is leaning out, will tend to improve straight-line acceleration on loose tracks.
Front Camber Links:
Changing the length of the camber link is considered a bigger step than adjusting the ball end height on the tower. Shortening the camber link (or lowering the ball end) will give the front end less roll and quicken steering response. Lengthening the camber link (or raising the ball end) will give the front more roll and slower steering response. Longer camber links are typically used on high grip tracks and shorter links tend to work better on medium-grip loose tracks.
Rear Camber Link:
Changing the length of the camber link is considered a bigger step than adjusting the ball end height on the rear chassis brace. Shortening the camber link (or lowering the ball end) will give the rear end less roll and the car will tend to accelerate or “square up” better. Lengthening the camber link (or raising the ball end) will give the rear more roll and more cornering grip. Longer camber links are typically used on high grip tracks, while shorter links tend to work better on medium grip loose tracks. The kit setting is the best compromise of cornering grip and acceleration.
Ackermann:
Ackermann is the angle difference between the front wheels when they are turned to steer the car. For minimal tire slip, it is standard for the inside wheel to steer to a greater angle than the outside wheel. If corner entry steering is too aggressive, try increasing the Ackermann by moving the ball studs to the rearward holes. Increasing the Ackermann will increase the angle difference of the front wheels when steered, resulting in a more stable car on corner entry.

References

• Team Associated (@teamassociatedrc) • Instagram photos and videos
• Champions By Design