I have to say that the Walkera 4G3 V2 is the smallest 3D helicopter of my Walkera fleet. With a brushless main motor, metal rotor head and 3.7V single cell LiPo battery, it is evident that Walkera has taken no short cuts designing such a small 3D helicopter. At first glance, the Walkera 4G3 V2  is a tiny helicopter, but if you look at the video clips, you will notice that it is quit capable to perform 3D maneuvers with ease.
 

The Walkera 4G3 V2 comes standard with strong high-density foam main rotor blades. These blades give the Walkera 4G3 V2 a main rotor diameter of 302mm. Optional carbon fiber main blades are available if you want to upgrade. The main rotor head assembly and swash is made of red anodized aluminum. The metal main rotor blade holders have one ball bearing each for the feathering shaft to assure smooth operating with collective pitch changes. Plastic flybar paddles are secure in place with two screws on  metal flybar.

All linkage balls are made from metal, accept for four plastic linkage balls on the upper part of the swash. The metal main shaft runs through three ball bearings. One ball bearing is situated in the swash, and the other two ball bearings in the main frame. The Walkera 4G3 V2 has a plastic main gear that is driven by a powerful brushless motor and metal pinion gear. The high KV rated (KV11000) brushless motor, gives the Walkera 4G3 V2 the performance needed for normal and 3D flight.

Three micro servos are used for elevator, aileron and collective pitch control. They are connected via linkages to the 120º metal swash. The Walkera 4G3 V2 has a six-channel receiver that adopts 2.4G spread spectrum technology with the function of automatic scanning, code pairing and LED receiving indication. The gyro is build into the receiver. Gyro sensitivity and mixing can be adjusted on the receiver and transmitter. Servo extend can also be adjusted on the receiver. The external Electronic Speed Controller (ESC) for the main brushless motor sits below the receiver. The colorful plastic canopy is held in position with one graphite rod situated above the aileron and PIT servos.

A plastic battery tray below the main gear secures the 3.7V LiPo battery during flight. The LiPo battery simply slides into position from the front. The Walkera 4G3 V2 landing skids are made of thin spring steel, and although they are very light, they will handle hard landings without breaking. The tail boom is made out of a hollow square graphite rod with the tail motor wires running through it. At the end of the tail boom you will find the powerful tail rotor motor to counteract the toque generated by the spinning main rotor. Although the tail rotor is very small, it is very effective through the reduction gear set.

The tail rotor shaft runs on two miniature ball bearings. Overall the Walkera 4G3 V2 has seven high quality ball bearings to ensure smooth running on all moving parts. The Walkera 4G3 V2 comes with a Li-Po battery charger. A red light will be on during charging, and a steady green light will show after charging is complete. It will take approximately 40-60 minutes for the Li-Po to be fully charged after flight.

You get different Walkera 4G3 V2 combos sets from eHIROBO. I got myself the Walkera 4G3 V2 with Aluminum case. The Aluminum case comes in really handy for carrying your helicopter and transmitter, with no better way to protect everything with precision cut out foam inside the Aluminum case. 

• WK-2601 six channel transmitter
• Walkera 4G3 3D helicopter
• One 3.7V LiPo Battery
• One extra set of main rotor blades
• One spare tail rotor
• Tool kit
• LiPo battery charger
• Walkera 4G3 manual
• Simulator Cable
• Aluminum case
 

• 8 AA batteries for the transmitter
 

Although the setup has been done at the Walkera factory, it’s always good practice to make sure that the helicopter is fit to fly. Make sure the blade tracking is set correct. If the blade tracking is out, it may result
in unnecessary vibration and a poor flying helicopter. Check the helicopter center of gravity with the battery and canopy installed. Make sure that the servos move in the correct direction. Throttle and pitch curves can be adjusted to suite your flying skills. All setup adjustments are clearly explained step by step in the Walkera 4G3 V2 manual.
 

Read the manual carefully before your first flight. Make sure that all batteries are fully charged. The Walkera 4G3 V2 flies very well straight out of the box, but if it is your first helicopter, you will find it difficult to control. If so, you can turn the servo extend on the receiver down. This will result in a more forgiving and docile flying little helicopter. At 60% throttle, the Walkera 4G3 V2 will lift of into a hover. Rudder, elevator and aileron trim should be applied if necessary.

Transition into forward flight is very good. Be careful, the helicopter really builds up speed quickly. The Walker 4G3 V2 is very responsive to elevator, rudder and aileron inputs. Tight turns can be flown with the greatest of ease. The gyro works very well, and the sensitivity can be adjusted if you like the rudder to be faster or slower. Pirouette speeds are equally fast left or right. Collective pitch in the normal mode is a bit slow, but as time go by, I will play around with the throttle and pitch curves for better performance.

Switching between normal flight mode and 3D mode is effortless above 70% throttle. The helicopter will drop substantial with switching between normal to 3D stunt mode below 70% throttle. I would recommend that you advance the throttle to 50% on the ground, and then change from normal flight mode to 3D flight mode. 3D flying with the Walkera 4G3 is not easy at first, but with practice, loops and rolls can be flown in a very small space. The gyro performs very well when flying inverted. Even backward inverted flying is no problem for the gyro. If you can master 3D flying with the Walkera 4G3, you will find any 3D flying on larger helicopters very easy.

Flight times vary between 7 to 8 minutes in normal flight mode, and 5 to 6 minutes in 3D flight. Flight times may differ all depending on type of flying and helicopter setup. Over all I have to compliment Walkera on this small 3D capable helicopter. Good job….
 

The Walkera 4G3 V2  is a nice indoor helicopter, but can also be flow outside in no wind conditions.
It is quite easy to fly if you have previous flying experience.
It has a powerful main and tail rotor motor.
The build in gyro is very effective.
It is 3D capable
It is cheap to maintain.
The parts are easily obtainable.
The Walkera 4G3 V2 is quite crash resistant.
Flying the Walkera 4G3 V2 is a pleasurable experience, and it’s not that expensive to buy.
 

If you want a fairly inexpensive 3D capable helicopter, I highly recommend the Walkera 4G3 V2

Happy Flying…

Specification Main Rotor Dia.: 302mm Tail Rotor Dia.: 58mm Overall Length: 273mm All-up Weight 68.4g (Battery included) Main Motor: KV11000 Brushless Motor Tail Motor: 0716R Battery: 3.7V 400mAh Li-Po Transmitter: WK-2601 Receiver: RX-2605A Gyro: Built-in ESC: WK-WST-10A-L Servo: wk-02-1 / weight 3.18g / speed 0.12sec/60°(3.0~4.5V) / torque 0.12kgf/cm / dimension 19.2*8.3*19.7mm Aluminum case dimensions: 50cm(L) x 11cm(W) x 22cm(H)   RC Helicopter Tips & Setup e-Guide 120º/140º CCPM Swashplate Setup e-Guide I came across this excellent R/C helicopter e-book. You will find this e-book very helpful. All tips included in this book can be applied to any collective pitch helicopter.  Illustrations and advice, tips and settings, basically everything the factory manual failed to provide plus much more. Blade 400, T-Rex 450, or any other quality collective pitch helicopter, electric or nitro, it doesn't matter - this RC helicopter tips e-guide/book will help. From the smallest micro electrics to the largest turbines, if your helicopter has a 120º or 140º CCPM swashplate and you are intimidated by the setup process, this e-book will answer all your questions, and perhaps several others you didn't even know about. If you wish to learn more about what's inside this latest e-Book of John Salt, just click on the image of the book. Order Now ONLY $12.95 Order Now ONLY $9.95