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convert mechanical speedometer to electronic
Can convert mechanical speedometer to electronic? Of course, just replace the mechanical watch with an electronic watch and install a speed sensor of the same model in the wave box. The shaft of the automobile engine transmits power to the gearbox, and the transmission ratio from the output shaft of the gearbox to the wheels is constant. A "flexible shaft" is installed on the output shaft of the gearbox, which leads to the odometer in front of the driver. The so-called "flexible shaft" is a spiral tube with steel wire core, like the pull wire used for bicycle line brake. There is lubricating oil between the tube wall and the inner core. The outer tube is fixed while the inner core can rotate. The speed of the inner core has a constant proportion to the speed of the wheel. The flexible shaft is connected to the speedometer so that the pointer can indicate the driving speed of the vehicle. At the same time, the rotation of the flexible shaft is also transmitted to the roller counter in the middle of the speedometer through the worm gear and worm, and the mileage represented by the wheel revolutions is accumulated. Because the speed and mileage are driven by the rotation action transmitted from the same flexible shaft, the two meters are together, the former is indicated by the pointer, and the latter is accumulated by the roller counter.
1. No matter the flexible shaft connection of the mechanical watch or the sensor connection of the electronic watch, the location interface on the gearbox is the same, and it does not need to be changed. It is directly screwed on.
2. The position of the hand brake light is different: the hand brake light of the mechanical watch and the white background electronic watch is on the left side of the instrument, above the headlight switch, and in a separate place. The hand brake light of the black background electronic watch is on the instrument panel display light position, that is, in the instrument.
Mechanical to electronic
1. Preparation materials: electronic instrument, electronic instrument plug, speed sensor, sensor plug, 2m power cord, insulating tape, scissors, screwdriver, etc
2. Remove the mechanical meter wiring. A Unscrew the vehicle speed flexible shaft from the instrument. B Attach a 2m power cord to the interface after unscrewing, so that the vehicle speed signal cable can be laid when the flexible shaft is pulled out C Unscrew the connector on the transmission and then the speed sensor D. There are three wires in the sensor plug wiring, one is connected to the positive pole of the power supply, the other is connected to the negative pole of the power supply, and the other is connected to the signal wire just laid. Which one is to be connected? There is a mark on the connection between the sensor and the plug.
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