VENOM Night Ranger II Pilot's Handbook Manual

venom night ranger ii

pilot’s handbook

read before flight!

venf-6221-2

I. Introduction

The Venom Night Ranger II is an outstanding Ready to Fly Electric Mini

Helicopter for indoor flying and outdoors on calm days. At about 300
grams, the Venom Night Ranger II will fly for 8-10 minutes on the 7-Cell
Ni-MH battery. Although the Venom Night Ranger II is not difficult to

operate, we recommend that you read these instructions thoroughly
and carefully first. You can also ask for assistance from your hobby

shop staff or local model flying club.

Specifications:

Model No ............................................... VENF-6221

Model Name .......................................... Venom Night Ranger II

Main Rotor Diameter ............................. 530 mm

Fuselage Length ................................... 500 mm

Weight ................................................... 280-300g

Battery ................................................... 8.4v Ni-MH

Radio Controller .................................... 4 Channel FM

Servo ..................................................... 2PCS

Guarantee:

We guarantee that the Venom Night Ranger II to be free of
manufacturing faults and material defects. This product has been
checked and adjusted individually before leaving the manufacturer.
Please contact your local hobby shop for replacement parts and technical

support or contact Venom Air Corps Customer Service at
or [e-mail]. To help identify broken or

damaged parts we have included a detailed parts list and assembly
diagram at the end of this instruction manual.

800-705-0620

WARNING!

READ BEFORE FLIGHT

The Venom Night Ranger II is not a toy. It is a precision machine requiring
proper assembly and setup to avoid accidents and it is the responsibility of
the owner to operate this product in a safe manner as it can cause serious
personal injury and damage to property due to carelessness or misuse.

When charging the battery pack, do not overcharge! If batteries get hot during
charging, discontinue charging immediately and disconnect the battery from
the charger. Never leave battery unattended while charging. If you are unsure
of how to charge this battery, please contact Venom Air Corps or seek the
advice of your local hobby shop. Never let children charge batteries without
adult supervision.

To avoid an out of control model always turn the transmitter on first then
connect the battery to the heli. When turning off the heli, always disconnect
the battery first, then turn off the transmitter. If the orders are reversed the
heli may become uncontrollable and cause serious damage.

If you are in doubt of your ability, we strongly recommend that you seek
assistance from experienced radio controlled Helicopter modelers or join
your local model flying club to gain the required knowledge and skill. As the
manufacturer and distributor, we assume no liability for the use of this
product.

Children under the age of twelve (12) are strictly prohibited from playing with
this electric helicopter.

II. Installation

The Venom Night Ranger II is a Ready-to-Fly Electric Helicopter. You
only need to install the battery and assemble and attach the rotor blades.

Please make sure the battery pack has been fully charged before
you install it.

1. The main rotor blades are attached to the blade holder using M2.5mm

screws and washers. Tighten them carefully!

Caution: When attaching the Rotor blades to the blade holder
make sure the blades are tight. To avoid stripping the plastic,
gently tighten the screws until they stop. If the blades are too
loose and pivot too freely, they will be unstable at high RPMs and
will produce undesirable flight characteristics that may become
dangerous.

2. Disassemble the canopy by gradually pulling the rubber grommets off

the horizontal mount bar.

02: VAC Night Ranger II

3. Plug in the supplied the wall charger and attach the battery pack.
Caution: The battery will be fully charged in about 2 hours, do not

overcharge! Overcharging the battery will cause serious damage or
may explode the battery! If batteries get hot during charging,
discontinue charging immediately and disconnect the battery from the
charger. Never leave battery unattended while charging. If you are
unsure of how to charge this battery, please contact Venom Air Corps
or seek the advice of your local hobby shop. Never let children charge
batteries without adult supervision.

4. Slide the battery holder apart, insert the fully charged battery (with the

wire lead facing forward) into the front half of the battery holder. Slide
the rear half of the holder back over the battery and secure with a
rubber band. Slide the entire battery assembly forward.

Fig. a

LIFT BY FLY BAR

The boom should be level with the
ground when the VNR II is lifted by
the flybar. If it is not, move the battery
forward or backwards to balance.
Always check the CG with the battery
and canopy installed

Balancing the Center of Gravity (CG)

NOSE HEAVY

LEVEL

TAIL HEAVY

5. To adjust the center of gravity position the flybar at a 90 degree angle

to the tail boom. Pick up the Venom Night Ranger II by the flybar and
position the battery so that the tail boom is parallel to the floor. (Fig. a)

IIi. Adjustments & Tuning

The instructions below are for Mode II -North America, please alternate
the control stick and transmitter trims for Mode I - Outside North America.

Attention:
Before connecting the battery to the control board, you must
confirm the following settings:
A. Transmitter has been turned on, antenna is screwed in and
extended and batteries are fully charged.
B. The crystals on the transmitter and receiver must match each
other.
C. The throttle stick (LEFT STICK) must be located in
the throttle down position, otherwise serious
damage to the Venom Night Ranger II and
personal injury may occur!

If all of the above settings are confirmed, connect the
battery to the control board.

1. After the battery is connected, the red indicator

light on the heli control board will start blinking
rapidly for 5-10 seconds, which indicates that the
control board and gyro are initializing. This
process is for self-adjustment of the system. DO
NOT TOUCH THE VENOM NIGHT RANGER II WHEN
THE GYRO IS INITIALIZING! Once initialized, the

indicator light will be a slowly flashing red light. If the light does not blink
after the battery is connected, please check that you have switched on
the transmitter and that the battery has been fully charged. NOTE: If the
throttle stick is not in the Throttle Down position when the battery is
connected, the gyro will still initialize but the throttle stick will not be
active until it is returned to the Throttle Down position.

Throttle

Up

Throttle

Down

1

6. Reinstall the canopy by pushing the two rubber grommets onto the horizontal
mount bar and inserting the cutouts over the front landing skid struts.

4. Push the left control stick slightly forward, keep your fingers, eyes and
other objects well away from the rotating parts. When the main rotor blades
start rotating, the tail blades should start rotating simultaneously.

5. Slowly push the left control stick forward to increase rotor speed. The
Venom Night Ranger II may not take off vertically; it may go forward or
backwards, left or right. Use trim sliders & to fine tune the Venom

3 4
Night Ranger II while hovering. You may also find the helicopter’s nose
will swing to the left or right side when you increase throttle. In this case, you
need to adjust the transmitter trim .

1

6.The Venom Night Ranger II is equipped with a gyro that
controls the RPM of the tail rotor to compensate for main
rotor torque. To adjust the sensitivity of the gyros effect,
use a micro flat blade screwdriver to rotate the gyro

2

Pot clockwise to lessen the sensitivity and counter-

adjustment pot (Fig. b). Turn the Gyro Adjustment

3

clockwise to increase the sensitivity.

7. Now you have finished all the settings and
adjustments. Pull the throttle stick to the Throttle
Down position and disconnect the battery from the

4

control board first, then turn off the power of the
transmitter. Never turn the transmitter off before
disconnecting the battery as the Venom Night Ranger II
may become uncontrollable.

Fig. b

Gyro Adjustment Pot

(Adjusts Sensitivity)

2. If the main rotor blades start rotating, and the left control stick has not
been pushed forward, slowly adjust the transmitter trim 2 (See Picture)
until they stop rotating. If the tail blades start rotating, carefully adjust
the transmitter trim 1 until they stop operating or rotate slowly.

3. Test the flight controls to make sure they are operating properly and will
move the swashplate in the direction you want to fly. Push the Right stick
forward and the swashplate will tilt forward. Push the stick to the right and
the swashplate will tilt to the right.

Front of Receiver/Gyro

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