VRX Racing RH816 User manual

Congratulations on your purchase of the VRX Racing 4WD electric cars.
This 1/8th scale model has been factory assembled and all electrics installed and set up to make it the easiest possible.
introduction to the sport of driving RC cars.
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Safety Precautions and Warnings
You are responsible for operating this model such that it does not endanger yourself and others, or result in damage to the
product or the property of others.This model is controlled by a radio which is possibly subject to interference which can cause
momentary loss of control so it is advisable to always keep a safe distance to avoid collisions and injury.Age Recommendation:
14years or over.This is not a toy.This product is not intended for use by children without direct adult supervision.
Needie Nose Pllers
尖嘴钳
Body Reamer
车壳绞刀
Wire Cutters
钢丝钳
No need to pre-drill precise holes(1mm to 15mm)can be drilled
可以对预钻的孔准确地钻1mm-15mm
Hex Wrench
六角扳手
Hex Wrench
十字套筒
Sharp Hobby knife
美工刀
ROUND CUTTER
For trimming bodies
剪刀
用于修剪车壳
Awl
锥
Differential Grease
差速油
Grease
润滑油
Screw Cement
螺丝胶水
Instant Glue
瞬间胶水
2.0Φ
2.5Φ
WARNNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating.Failure
to operate the product correctly can result in damage to the product, personal property and serious injury.This is not a toy and
must be operated with caution and common sense. Failure to operate this product in a safe and responsible manner could result
in damage, injury or damage to other property.This product is not intended for use by children without direct adult supervision.It
is essential to read and follow all the instructions and warnings in the manual, prior to assembly,set-up or use, in order to operate
correctly and avoid damage and serious injury
Carefully follow these directions and warnings, plus those any additional equipment associated with the use of this model,
chargers, ESC and motors, radio etc.
Never operate your model with low transmitter batteries.
Always operate your model in an open area away from cars, traffic or people.
Never operate the model in the street or in populated areas.
Always keep the vehicles in direct line of sight, you cannot control what you cannot see!
Keep all chemicals, small parts and anything electrical out of the reach of the children.
Avoid water exposure, moisture causes damage to electronics and may result in the loss of control or permanent damage.
Avoid injury from high speed rotating parts, gears and axles etc.
Novices should seek advice from more experienced people to operate the model correctly and meets its performance potential.
Exercise caution when using tools and sharp instruments.
Do not put fingers or any objects inside rotating or moving parts.
Take care when carrying out repairs or maintenance as some parts may be sharp.
Do NOT touch equipment such as motor electronic speed control and battery, immediately after using your model because
they can generate high temperatures.
Always turn on your transmitter before you turn on the receiver in the car Always turn off the receicer before turming your
transmitler off.
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Keep the wheels of the model off the ground, keep your hands away from the wheels when checking the operation of the radio
equipment.
Prolong motor life by preventing overheat conditions. Undue motor wear can result from frequent turns, rapid change of
direction forwards/backwards, continuous stop/starts, pushing/pulling objects, driving in deep sand and tall grass, or driving
continuously up hill.

Notes on Battery use:
WARNING! NEVER LEAVE THE BATTERY UNATTENDED WHILE ON CHARGE.
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Charging/Installing the Battery
Always store your model with the battery pack unplugged and removed. Always charge your battery away from the vehicle.
The supplied charger can charge either 2s or 3s (cell number) Lipo batteries.The supplied
battery is a 3s ensure you plug it into the correct 3s balance port.
When the charger is connected to the mains powers the power LED will turn green. Once your
connect your balance connector to the charge the status LED will turn red indicating that
charging is in progress. Once the battery is fully charged the status LED will turn green. If you
experience the LED blinking red then there is an error with either the battery or charger.
When charging a completely discharged battery, the charger can become hot to touch. NEVER
LEAVETHE BATTERY CHARGE UNATTENDED。Always disconnect the charger from the
mains supply and the battery pack when not in use.
To install a charged battery, firstly remove the body shell and insert the battery into the battery
case, then fasten the two Velcro straps to fix the battery stably. When connecting battery and
turning car on, ensure it is off ground with wheels away from objects.
Always allow the battery cool after use, before recharging.
Always inspect the battery before charging.
Any bare wires, split heat shrink or leakage is a sure sign of abuse.
Never attempt to charge dead or damaged batteries.
Do not disassemble the battery or cut the connector wires.
If the battery connector,battery case or cable insulation get hot enough to melt or split there is most likely a serious problem with
your model,battery wires or speed controller.Find and correct the problem before installing another charged battery pack.
NEVER charge the battery unattended incase of overcharging, you need to be able to monitor the battery during charging.
Charge away from flammable objects and on a non-flammable surface incase the battery becomes too hot.
Aerial Assembly
As the aerial wire on 2.4GHz system is so short you do not need to protrude through the body shell and it can be left to stand
directly from the receiver. If you want the security of an aerial tube away simply cut it short, and insert in the usual way but do NOT
bend over the last 5mm of aerial wire to retain it under the rubber cap, last two inches of aerialwire need to be straight with no kinks
for maximum range and control with 2.4GHz system.
First be sure to insert the wire up through the receiver cover hole as below. Push the wire all the way through the aerial tube until
the first 5mm of wire shows out of the other end. Finally make aerial tube firmly seated.

Regular maintenance.
Trouble shooting guide.
Frequently check the whole vehicle for loose or missing fixings.Use
thread lock on any replacement screws into metal threads.
Getting Started
After Run.
Refer to 2.4ghz binding manual for radio set-up.
Switch on transmitter
Hold vehicle clear of the ground,connect battery pack and switch on receiver.
Test the transmitter to check control of the vehicle with wheels off the ground.
Start driving slowly and if the vehicle does not go straight ,adjust steering trim dial on Transmitter.
For the very first run use the throttle gently,to help the driver become accustomed to the vehicles behaviour and controls.
Although this vehicle features waterproof electronics they are not designed to be submerged in water.
Potential damage can still occur to vehicles components if you do so.
Switch off the receiver power,switch off the transmitter.Disconnect the battery and remove it from the vehicle,allow it to cool
before recharging.If you have a second charged battery all ready to use,still allow the vehicle to cool slightly before continuing.
Frequently check rotating parts are free from grass,stringetc.that might
bind their motion and over stress the motor or speed controller.Remove
the wheels occasionally and check behind the mounting hex for
obstructions oranything that might have been wrapped around the
axleand caused extra drag.
Check the gear mesh frequently and remove any stones or grit from
gear teeth to prevent premature wear and damage.If the motor moves,
or is removed for maintenance/exchange,the gear mesh will need to be
set.Simply slacken the motor retaining screws and adjust the motor
until there is just discemable backlash between pinion and spur teeth.
If the gear is too tight or too loose the gears will be noisy and could be
damaged.
Shock absorbers will wear prematurely if used in dirty dusty conditions.
Replace oil and seals as required to keep a smooth dampening action.
Short Runtime: Sluggish Action: Motor/ESC overheat: Motor spins but vehicle Poor Range or fails to
Battery damaged/not Motor damaged. Over-geared refuses to move: operate:
charged. Bind in drive train. Binding transmission.Gears damaged. Transmitter batteries low.
Motor dirty or brushes worn. Battery running low on Seized axle bearing. Gears loose on shaft. Vehicle Battery Low.
Drivetrain binding. power. Motor binding. Magnets debonded from Transmitter switched off.
motor armature. Transmitter/receiver aerial
Slipper clutch too loose. not extended.
Drive shaft broken or ESC switched off or
missing. battery not connected.
Loose connectors/wires.
2.4ghz binding with
-receiver lost

LIPO BATTERY-USER SAFETY AND HANDLING INSTRUCTIONS.
General guidelines and warnings:
Charging process:
Read all safety instructions before charging or using your batteries for the first time.
Lipo batteries require completely different charging and care than Nicd and NIMH batteries.Misuse can result in
fire,personal injury and/or damage to property.The buyer assumes all Liability and risk associated with the use
of Lithium-Polymer (Li-Po) batteries.Immediately retum the battery,unused,if you do not agree with these terms.
1.Use a Lithium Polymer specific chargers only!Do not use a NiCd or NiMH charger.
2.NEVER charge unattended.Always charge in safety sack or metal tin with lid and away from other flammable
materials.
3.During the charge process watch for swollen or ballooning cells.If this happens immediately disconnect the
charger and move the battery to a fire proof place for 15 minutes. Do not attempt to charge again.
4.A short circuit can cause a rapid discharge of high currents.Avoid short circuits,and be aware of short circuits
on jewelery.
5.Any Lithium Polymer battery involved in a crash should be removed and observed in a fireproof space for 15
minutes before continuing to use or charge the battery.
6.If rewiring the battery pack,rewire the leads one at a time .Do not cut both leads.Do not short circuit on tools.
7.Do not expose battery packs to direct sunlight for extended periods.
8.Do not attempt to tamper with or open the LiPo Hardcase.The case is protection against possible battery
swelling.
Before charging:
Visually inspect the pack checking for damaged leads,connectors,cracked heat shrink covering,swelling or
other abnormalities.Do not charge if the pack is damaged.
1.NEVER charge unattended.
2.Charge away from flammable materials and inside a Lipo safe sack or metal tin with lid.
3.Allow battery to cool before charging.
4.Use the battery label for setting charger cell count and voltage.
5.Do not exceed 5C MAX charge rate.(Example,charge a 1000mAH pack at 5A MAX)
If disposing of a Lipo battery proceed as follows:
Submerse the battery into a container filled with about 10 litres of salt water(one cup of salt in 10L).Leave the
battery submerged for 2 weeks,this will slowly and safely discharge the battery until the voltage has dropped to
zero volts which eliminates the risk of any chemical reaction.It can then be disposed off in the general waste
collection.