Techy at day, Blogger at noon, and a Hobbyist at night

Techy at day, Blogger at noon, and a Hobbyist at night

Raider R150 tachometer for BRT solution

Posted: 24 Jan 2015 06:25 PM PST

Raider R150 tachometer is a digital design that works only with the OEM DC-CDI. The input signal pulses for it to work came from one of the output pins of the MCU inside the black box.

Many motorcycle mod junkie that fits aftermarket compatible ignition controller like the BRT, kitti and others do not have that pulse to make the tachometer work again, Hence only some modification is needed.

Figure 1 shows the circuit that may able to use to control and or make the tachometer works and uses LM2917N which is a frequency to voltage converter entirely useful on thise analog tachometer made by TYPE R.

CIRCUIT DESCRIPTION

The signal pin is connected to the primary input of the ignition coil. The meter connection to be use is meter (-) and will be connected to the wire that was supposedly connected on the CDI pin. which is pin 5 wire..calibration is done by VR1, and your done.


CONSTRUCTION

figure 2 shows the typical layout of the circuit.

Image not scaled.

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