I will make some comparison between the Walkera 4#3B brushed version and the Walkera 4#3B V3 double brushless version in this review. The new Walkera 4#3B V3 basically is the same helicopter as the Walkera 4#3B brushed version, but better. The Walkera 4#3B V3 has two external speed controllers, two brushless motors and a different receiver to accommodate the two speed controllers.

Let’s start with the main rotor. The main rotor blades are made from a strong durable plastic. They are a bit flexible, but in a good way. Due to the Walkera 4#3B V3 light weight, the load factor on the main rotor blades are minimal, so the flexibility of the main rotor blades doesn’t affect the flight performance of the helicopter at all. You will get away with minimal or no damage to the main rotor blades when you crash due to its flexibility.

The rotor head assembly is all anodized metal like the previous Walkera 4#3B. The blade holder rock side ways on two miniature high quality ball bearings. The balancing bar for the flybar-paddles is made from steel. Two little screws on the flybar connectors can adjust the paddles. The metal swash plate is very simple with two servos connected to it via ball linkages. The simplified 90° swashplate with CNC-cut rotor head features durability and stability.

The main shaft runs through the main frame on two ball bearings. The plastic main gear is connected on the bottom end of the main shaft. The Walkera 4#3B V3 have two 3.5g servos. One servo for elevator, and one servo for aileron. As small as the are, they give precise elevator and aileron movement for excellent cyclic control. The servos are held in position by one bracket on the main frame which make replacement very easy if necessary.

The main motor of the Walkera 4#3B V3 is a brushless KV11000 motor which gives the helicopter plenty of power for its size. A great improvement compared to the brushed Walkera 4#3B. The external speed controller (WK-WST-10A) for the brushless main motor is situated below the receiver on the main frame.

The Walkera 4#3B V3 has a four channel 2.4G receiver for elevator, aileron, rudder and throttle control. The gyro is build into the receiver, and gyro sensitivity can be adjusted on the receiver if needed. There is no servo extend adjustment on this receiver, so for more swash movement, you need to move the servo linkage ball to the outer hole on the servo arm. The external speed controller (WK-WST-10A-LT) for the brushless tail motor is situated next to the aileron servo.

You will either get one 3.7V 500mAh LiPo or two 3.7V 400mAh batteries with this kit. The 500mAh LiPo will give the Walkera 4#3B V3 about 8 minutes of flight time, and the 400mAh LiPo about five minutes. The LiPo battery simply slides into the battery tray, which make battery changes very easy. The landing skids are made of extremely thin spring steel, and although they are very light, they will handle hard landings with ease without breaking.

The tail boom is made out of a hollow graphite rod with the tail motor wires running through it. At the end of the tail boom you will find the brushless tail motor holder and tail fin. The brushless tail motor ensures for enough power to overcome the torque of the main rotor. Walkera did away with the reduction tail motor gears, and the tail rotor is directly driven by the small brushless tail motor.

The Walkera 4#3B V3 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. The 2.4G transmitter allows the transmitter to bind to the helicopter receiver with precise code pairing and strong anti-jamming (no more worries about interference while flying).

The gyro of the Walkera 4#3B V3 is solid, and nothing bad can be said about it. Out of the box, the elevator and aileron extend is fine for the first flight. I have adjusted my elevator servo linkage to the outer hole on the servo arm for more movement. Now my Walkera 4#3B V3 is responding fast to elevator inputs, just as I like it. Overall the Walkera 4#3B V3 flies very well, and I can highly recommend this helicopter from Walkera.