BM70 has a brushed underwater thruster

Attention:Cannot use 12V voltage. If you need to use 12V voltage, please consult customer service

1、 About our services

We insist on providing excellent service to the end. If you encounter any problems, please feel free to contact us. Our after-sales service is worry free.

Very suitable for fishing boats, trawling boats, unmanned boats, school model teams DIY、 Training institutions offer discounts for bulk purchases.

2、 About thrusters

1: Motor: brushed motor

1) The motor is equipped with a fully sealed waterproof casing, with a waterproof depth of up to 50M;

2) The size of the thruster is 30mm in diameter, and the length of the motor part is 45mm;

3) The forward and reverse control of brushed motors is very simple. After swapping the two wires of the motor, its rotation direction will change;

4) Working voltage of thruster motor (thruster working voltage): 7.4V (2S, 7.4-8.4V) (If equipped with our receiver board, only 7.4V voltage can be connected because the highest voltage of the receiver board is 7.4V);

secondly

It is generally recommended to use lithium batteries. If the use of lithium batteries is not allowed (such as during competitions), 4-5 dry batteries of size 5 can be used in series;

2: Propeller

1) Propellers have both positive and negative propellers;

2) A ship usually uses two thrusters, one forward and one reverse;

3) The propeller is a 2mm three bladed propeller with a diameter of 36mm and a diameter of 2mm;

4) The combination of forward and reverse oars can achieve the forward, backward, left turn, and right turn of the ship;

5) The material is nylon, which can be used for making model toys in school competitions;

6) Suggest buying in pairs;

3: Propeller: Waterproof motor+propeller

1) Suitable for small boats, duck boats, nesting boats, and ordinary toy boats with a width of 15-25cm and a length of 28-55cm;

2) Can be used in underwater robots ROV， Waterproof depth of 30 meters, completely sufficient;

3) Suggest purchasing in pairs;

4) We have equipped the thruster with a stainless steel mounting base, which you can install according to your actual needs;

5) Leave a distance between the thruster and the bottom of the ship, so that the thruster can work better fully submerged in water;

6) Fully waterproof and sealed;

7) Coupling connection, modular design, making it easier to repair and replace;

4: Remote control kit:

1) The remote control distance is 100-150 meters, and can reach up to 150 meters in wide areas;

2) The remote control+control board set can be applied to remotely control tanks, differential vehicles, differential ships, etc;

3) The receiving board has passed the factory inspection. Due to the need for customers to adapt batteries and motors themselves, as well as the unstable operability of personal DIY, the receiving board does not accept returns, exchanges, or after-sales service!

4) The receiving board can only be matched with our store's remote control, and other manufacturers' remote controls are not compatible. The remote control can only be paired with our store's products and cannot be compatible with other manufacturers' model toys;

5) Pushing differential turns on both sides, the most familiar model of differential turning principle is the tank, and turning can be achieved by using different motor speeds on both sides;

6) Automatic code matching upon power on, no code stringing, one-on-one remote control;

7) Handle control, four channels, adjustable speed, can control the front, back, left, right and four directions of the model, and can fine tune the direction to complete linear motion;

8) The receiving board is equipped with a switch, and the input end has reverse connection protection, so there is no fear of the positive and negative ends being connected in reverse;

9) The receiving board can only connect 7.4V voltage and 2S battery, and any higher voltage will burn it out.

10) Schematic diagram of receiving control board interface:

① Indicator light          ② Switch           ③ Connect left and right motors (send silicone wire)      

④ Input anti reverse protection              ⑤ Connect 2S lithium battery

10) : Usage method

10.1): Install 4 No. 5 batteries into the remote control, turn on the switch to power on, and the indicator light will flash.

10.2): Insert the battery into the receiving board, turn on the switch to power on, and automatically match the code with the remote control. The successful code matching indicator light changes from flashing to constantly on. Opening the remote control first or opening the receiver board first can automatically match the code.

10.3): The left side is used to control the forward and backward direction of the motor with the handle. The higher the position of the handle, the faster the speed. On the right are the left and right direction handles to control the movement direction of the model; The buttons below the directional handle are the left and right directional adjustment buttons, aiming to make the model move in a straight line as much as possible.

Tip: It is difficult to distinguish the positive and negative of the motor. You can first connect the two motor wires at will and push the forward handle on the remote control. If one motor rotates forward while the other motor rotates in reverse, simply swap the two wires on the back of the motor that rotates in reverse to adjust it! In short, if the two wires of the motor are switched, the direction of its rotation will be reversed.

5: Schematic diagram of physical wiring for thruster and control board:

Thruster set

Remote control distance: 50-100 meters

① Remote control   ② Formal motor   ③ Reverse mounted motor   ④ Charger   ⑤ Battery   ⑥ Receiving Controller

6: Compatible battery:

1) The battery voltage is 8.4V/7.4V, and the battery is a 2S lithium battery. It is recommended to purchase from us, as lithium batteries are better than size 5 batteries

Okay;

2) The larger the capacity of the battery, the longer the endurance and play time, but the larger the capacity, the larger the volume of the battery;

7: Battery charger

1) The battery charger is equipped with a USB interface, which is very convenient for charging the battery;

2) The charger can only charge a 2S battery;

8: Frequently Asked Questions and Answers

8.1. Does the remote control light not turn on when the battery is inserted into the remote control?

Answer: The battery has positive and negative poles inserted in reverse; Or the battery is out of power.

8.2. Does the indicator light not light up when the battery is inserted into the receiving board?

Answer: The switch is not turned on; The battery is out of power; The positive and negative wire sequences of the battery interface and receiver interface are reversed; A lithium battery with a voltage of 11.1V12V or higher was used, causing the receiving board to burn out.

8.3. Does the model keep spinning or yaw severely after pushing the forward handle?

Answer: The motor wiring is incorrect. One motor is in reverse. Swap the wire sequence of the reverse motor; Poor consistency of the motor or one of the motor wires not properly connected or damaged.

8.4. Push any handle, the indicator light on the receiving board will turn off, and the motor cannot rotate or can only drive one motor?

Answer: If the battery on the receiving board is out of power or cannot output high current to drive the motor, please do not use dry or expired batteries.

8.5. When the controller controls the motor to accelerate, if the motor stops and the indicator light on the receiving board goes out, it will be normal again. Or can only one motor be controlled to accelerate or decelerate, and if two motors rotate at the same time, it will restart?

Answer: If the battery on the receiving board is out of power or cannot output high current to drive the motor, please do not use dry or expired batteries.

9. Exclusive design, with our own design team, accepting commercial customization, and supporting training.

Note: We are a factory. If you have any questions, please contact us actively and express the cause and effect directly. After sales handling is required, and customer service will follow up on the next steps.