1. Materials: 1 clock gear with a diameter of 65mm, 2 plexiglass plates of 70×70×2 (mm), 5 bicycle spokes, 1 No. 1 flashlight, 1 131 motor, ?4 1 ×90 (mm) iron rod, 1.5mm thick copper wire and some 3mm screws.

2. Production:

1. Process the organic glass plate into two discs with a diameter of 70mm, drill a hole with a diameter of 4.5mm in the middle, and then press the picture 1 Drill five small holes, the diameter of which is suitable for inserting the spokes.

2. Install the wire wheel according to Figure 1. Use a wrench to twist the two ends of the iron rod into threads and insert them into the wire wheel. Drill 5 small holes in the gear, and drill the corresponding 5 small holes in a disc of the wire wheel. Use screws and nuts to screw the gear (Picture 2) and the disc together.

3. Remove the head of the flashlight, insert the wire wheel into the flashlight, fix the wire wheel with a nut, and position it with a nut on the other end of the iron rod.

4. Place the 131 motor with the short gear rod in the appropriate position of the torch and mesh the gear rod with the gear, and then fix the motor on the flashlight.

5. Take thick copper wire and fold it into three parts as shown in the figure to make a threading frame and then weld it to the flashlight. Take a piece of thin wire and insert it into the flashlight to connect the circuit. The button switch of the flashlight controls the motor.

6. Finally, tie a thread clip modified with a paper clip to the end of the thread.

3. Use:

When taking up the line, hold the take-up device with your right hand and pull the kite line with your left hand. The wheel will rotate rapidly, and a thin line of more than 100 meters can be collected quickly. Inside the wheel.