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4 • 1/16 SUMMIT VXL

This model is not intended 
for use by children under 
14 years of age without the 
supervision of a responsible 
and knowledgeable adult.

All instructions and 
precautions outlined in this 
manual should be strictly 
followed to ensure safe 
operation of your model.

SAFETY PRECAUTIONS

Previous experience with 
radio  controlled  models 
is recommended. Models 
require  a  higher  level  of 
setup,  maintenance,  or 
support equipment.

Skill Level = Myriad Semi Bold

1 2 3 3+ 4 5

bluehighway font

For Expert Drivers

Choose the Model That is Right For You.

For individual Models

No previous experience with radio controlled models is required.

Models require a minimum of setup, maintenance, or support equipment. 

Previous experience with radio controlled models is mandatory. These 

models are capable of high speeds, requiring experienced driving control. 

Models require detailed setup, and/or maintenance procedures with required 

support equipment. 
Previous experience with radio controlled models is mandatory. 

These models are capable of very high speeds and require an even higher 

level of skilled driving control. Models require detailed setup, and/or mainte-

nance procedures with required support equipment. 

For Expert Drivers Only.

 This product is capable of extreme speed 

and acceleration! It carries our highest skill level rating and is intended 

for expert drivers only. Experience with nitro-powered radio controlled 

models is required!

Previous experience with radio controlled models is recommended.

Models require a higher level of setup, maintenance, or support equipment. 

No previous experience with radio controlled models is required.

Model requires a minimum of setup, maintenance, or support equipment. 

Previous experience with radio controlled models is mandatory. This model is 

capable of high speeds, requiring experienced driving control. Model requires 

detailed setup, and/or maintenance procedures with required support 

equipment. 

Previous experience with radio controlled models is mandatory. This model is 

capable of very high speeds and requires an even higher level of skilled driving 

control. Model requires detailed setup, and/or maintenance procedures with 

required support equipment. 

For Expert Drivers Only.

 This product is capable of extreme speed 

and acceleration! It carries our highest skill level rating and is intended 

for expert drivers only. Experience with nitro-powered radio controlled 

models is required!

 Previous experience with radio controlled models is recommended.

Model requires a higher level of setup, maintenance, or support equipment.

BELOW TEXT HAS BEEN UPDATED on 3-14-07
Kent wants maintenance text to be at the END of the paragraph.-- KB

All of us at Traxxas want you to safely enjoy your new model. Operate your model 
sensibly and with care, and it will be exciting, safe, and fun for you and those 
around you. Failure to operate your model in a safe and responsible manner may 
result in property damage and serious injury. The precautions outlined in this 
manual should be strictly followed to help ensure safe operation. You alone must 
see that the instructions are followed and the precautions are adhered to. 

IMPORTANT POINTS TO REMEMBER

• 

Your model is not intended for use on public roads or congested areas where its 

operation can conflict with or disrupt pedestrian or vehicular traffic.

• 

Never, under any circumstances, operate the model in crowds of people. Your 

model is very fast and could cause injury if allowed to collide with anyone.

• 

Because your model is controlled by radio, it is subject to radio interference from 

many sources that are beyond your control. Since radio interference can cause 
momentary losses of radio control, always allow a safety margin in all directions 
around the model in order to prevent collisions. 

• 

The motor, batteries, and speed control can become hot during use. Be careful to 

avoid getting burned.  

• 

Don’t operate your model at night, or anytime your line of sight to the model may 

be obstructed or impaired in any way.

• 

Most importantly, use good common sense at all times.

BATTERIES AND BATTERY CHARGING

Your model uses rechargeable batteries that must be handled with care for 
safety and long battery life. Make sure to read and follow all instructions and 
precautions that were provided with the battery pack and your charger. It is your 
responsibility to charge and care for the battery packs properly. In addition to 
your battery and charger instructions, here are some more tips to keep in mind.
• Use the supplied charger to charge the included battery. See “Charging the 

Battery Pack” on page 11. 

• Never leave batteries to charge unattended.
• Remove the battery from the model while charging.
• Always unplug the battery from the electronic speed control when the model is 

not in use and when it is being stored or transported.

• Allow the battery pack to cool off between runs (before charging).
• Do not use battery packs that have been damaged in any way.
• Do not use battery packs that have damaged wiring, exposed wiring, or a 

damaged connector. 

• Children should have responsible adult supervision when charging and 

handling batteries.

LiPo Batteries

Lithium Polymer (LiPo) batteries are becoming popular for use in R/C models due to 
their compact size, high energy density, and high-current output. However, these 
types of batteries require special care and handling procedures for long life and safe 
operation. 

Warning:

 LiPo batteries are intended only for advanced users that are 

educated on the risks associated with LiPo battery use. 

Traxxas does not recommend 

that anyone under the age of 16 use or handle LiPo battery packs without the 
supervision of a knowledgeable and responsible adult. 

Your model is able to use LiPo batteries with nominal voltage not to exceed 11.1 
volts (3S packs). LiPo batteries have a minimum safe discharge voltage threshold that 
should not be exceeded. The Velineon VXL-3s electronic speed control is equipped 
with built-in Low-Voltage Detection that alerts the driver when LiPo batteries have 
reached their minimum voltage (discharge) threshold.

 

It is the driver’s responsibility 

to stop immediately to prevent the battery pack from being discharged below its 
safe minimum threshold.

Low-Voltage Detection on the speed control is just one part of a comprehensive 
plan for safe LiPo battery use.

 

It is critical for you, the user, to follow all other 

instructions supplied by the battery manufacturer and the charger manufacturer 
for proper charging, use, and storage of LiPo batteries. Do not attempt to charge 
LiPo batteries with the Traxxas charger included in this package. Make sure you 
understand how to use your LiPo batteries. 

Be aware that Traxxas shall not be 

liable for any special, indirect, incidental, or consequential damages arising out of 
the installation and/or use of LiPo batteries in Traxxas models. 

If you have questions 

about LiPo battery usage, please consult with your local hobby dealer or contact 
the battery manufacturer. 

As a reminder, all batteries should be recycled at the end of 

their useful life. 

Recycling Your Traxxas Power Cell NiMH Battery

Traxxas strongly encourages you to recycle your Power Cell battery when it has 
reached the end of its useful life. 

Do not throw your battery in the trash.

 All Power 

Cell battery packs display the RBRC (Rechargeable Battery Recycling Corporation) 
icon, indicating they are recyclable. To find a recycling center near you, ask your local 
hobby dealer or visit www.call2recycle.org.

SPEED CONTROL

• 

Disconnect the Battery

: Always disconnect the battery from the speed control 

when not in use. 

• 

Transmitter on First

: Switch on your transmitter first before switching on the 

speed control to prevent runaways and erratic performance.

• 

Don’t Get Burned

: The heat sink can get extremely hot, so be careful not to 

touch it until it is cool. Supply adequate airflow for cooling.

• 

Use Stock Connectors

: If you decide to change the battery  

or motor connectors, only change one battery or motor connector at a time. 
This will prevent damage from accidentally mis-wiring the speed control. 
Please note that modified speed controls can be subject to a rewiring fee when 
returned for service. Removing the battery connector on the speed control or 
using connectors with no reverse-polarity protection on the speed control will 
void the product’s warranty.

• 

Insulate the Wires

: Always insulate exposed or damaged wiring with heat 

shrink tubing to prevent short circuits.

• 

No Reverse Voltage

: The speed control is not protected against reverse polarity 

voltage. When changing the battery and/or motor, be sure to install the same 
type of connectors to avoid reverse polarity damage to the speed control. 
Removing the battery connectors on the speed control or using the same-
gender connectors on the speed control will void the product’s warranty.

• 

No Schottky Diodes

: External Schottky diodes are not compatible with 

reversing speed controls. Using a Schottky diode will damage the electronic 
speed control and void the 30-day warranty.

1

Summary of Contents for 1/16 Summit VXL 72074

Page 1: ...owner s manual MODEL 72074...

Page 2: ...f the way Refer to the next page to find out how to contact us and what your support options are Quick Start This manual is designed with a Quick Start path that outlines the necessary procedures to g...

Page 3: ...r question at support Traxxas com Join thousands of registered members in our online community at Traxxas com Traxxas offers a full service on site repair facility to handle any of your Traxxas servic...

Page 4: ...t is being stored or transported Allow the battery pack to cool off between runs before charging Do not use battery packs that have been damaged in any way Do not use battery packs that have damaged w...

Page 5: ...G THE DECALS The main decals for your model have been applied at the factory Additional decals are printed on self adhesive clear mylar and are die cut for easy removal Use a hobby knife to lift the c...

Page 6: ...Shock Traxxas High Current Connector Chassis Front Body Mount Rear Body Mount Push Rod Hex Hub Pivot Ball Axle Carrier Rocker Front Bumper Transmission Spring Pre load Adjuster Slipper Clutch LED Ligh...

Page 7: ...11 11 Maintaining your model See page 25 The transmitter requires 4 AA alkaline or rechargeable batteries Follow these critical steps to maintain the performance of your model and keep it in excellent...

Page 8: ...ated with brushless motors Typically it is a slight stutter noticed when accelerating from a stop It happens for a very short period as the signals from the electronic speed control and the motor sync...

Page 9: ...face of the transmitter Thermal Shutdown Protection Temperature sensing electronics used in the electronic speed control detect overloading and overheating of the transistor circuitry If excessive tem...

Page 10: ...3m ELECTRONIC SPEED CONTROL Your model is equipped with the Traxxas TQ 2 4GHz transmitter The transmitter has two channels Channel one operates the steering and channel two operates the throttle The r...

Page 11: ...ed while charging INSTALLING THE RECEIVER ANTENNA The receiver antenna and antenna tube must be properly installed before operating your model Follow these steps to install the antenna and antenna tub...

Page 12: ...batteries into the Y harness sold separately The harness connects the two packs in series The two 7 2 volt 6 cell battery packs will operate as one 14 4 volt 12 cell battery pack 4 Plug the Y harness...

Page 13: ...u accidentally reset the direction of a channel Do not reverse the steering or throttle channels unless necessary Steering reversing procedure 1 Press and hold the SET button on the transmitter for tw...

Page 14: ...uld be pointing straight ahead If the wheels are turned slightly to the left or right slowly adjust the steering trim control on the transmitter until they are pointing straight ahead 7 Gently operate...

Page 15: ...oth the transmitter and the receiver turn solid green the system is bound and ready for use Confirm that the steering and throttle operate properly before driving your model TRAXXAS TQ 2 4GHz RADIO VE...

Page 16: ...eutral The LED will shine RED 5 Move the throttle trigger forward again to engage reverse Profile 1 The LED will turn off Once full reverse power is reached the LED will shine RED 6 To stop return the...

Page 17: ...he speed control will slowly blink red indicating a low voltage shutdown The VXL 3m will stay in this mode until a fully charged battery is connected The electronic speed control is factory set with L...

Page 18: ...es of batteries that are available and the methods with which they can be charged it s impossible to give exact run times for the model Another major factor that affects run time is how the model is d...

Page 19: ...ot submerge the motor under water Do not gear the motor by temperature when running in wet conditions The motor will be cooled by water contact and will not give an accurate indication of appropriate...

Page 20: ...iver and remove the receiver Receiver Installation 1 Route the antenna wire out of the receiver box cover A Place the cover on the chassis 2 Route the servo and speed control leads into the receiver b...

Page 21: ...ension damping effect Changing the oil to a higher viscosity oil will increase damping Lowering the viscosity of the oil will cause the suspension damping to be reduced Damping should be increased wit...

Page 22: ...ission gears It may also be used to regulate the amount of power sent to the rear wheels to prevent tire spin When it slips the slipper clutch makes a high pitch whining noise To adjust the slipper cl...

Page 23: ...model which will reduce performance and may overheat the motor and speed control Use the following formula to calculate the overall ratio for combinations not listed on the gear chart Motor Installati...

Page 24: ...eometry of the model The offsets and dimensions designed into the model s wheels are intentional therefore Traxxas cannot recommend the use of other non Traxxas wheels with different specifications Ex...

Page 25: ...ocks full Use only 100 pure silicone shock oil to prolong the life of the seals If you are experiencing leakage around the top of the shock inspect the bladder in the top cap for signs of damage or di...

Page 26: ...1100 Klein Road Plano Texas 75074 1 888 TRAXXAS 101108 72074OM N EN R00 owner s manual MODEL 72074...

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