No será un spedohealer, que es lo que se usa para adaptar los pulsos cuando cambias el desarrollo en una de cadena?
Calculas el cambio de relación en su web, metes el factor conversor y listo.
Enviado desdel CPC6128
Van por ahí los tiros, pero hay también que poner algún componente para hacer una conversión del voltaje.
Este es el mensaje original del que han partido para solucionarlo, pero en algún hilo comentaba que tenía un plano del circuito electrónico con los componentes. Yo de electrónica ni idea, y tampoco se si cualquier persona que sepa de electrónica puede montarlo solo con estos datos:
".....
But problem is that BMW also changed the wheel speed sensor and the ring gear the sensor reads. To use a 08+ FD in a older bike, there are two fundamental problems that need to resolved.
1) The sensors are mechanically different size so it's not possible to simply use the old sensor in the new FD.
2) The sensors use different output signal level. The computer on an older bike can't even tell the rear wheel is turning based on the signal from a new sensor.
3) The ring gear in the 08+ FD has 48 slots and the older one has 78. Even if the sensor signal levels were compatible, the new FD would make the speedometer read 38.5% too low, and on a ABS equipped bike the ABS computer would throw an error.
The wheel speed sensors used in the r1200 bikes are 2-wire Hall effect sensors with binary current output. The two current levels of the older sensor are 4mA and 10mA, the new sensor uses 7mA and 14mA.
That's bad news since all the electronic speedometer calibration devices out there support only other types of wheel speed sensors. Either open-drain outputs or old inductive sensors that produced an AC voltage that was relative to the wheel speed.
All Japanese bikes, most other European ones and most cars use open-drain output sensors (also called "ground switching" sensors).
So none of the SpeedoHealer or other comparable products work with our bikes.
If they did, it would be trivial to plug in one of those, dial in the correction factor and be done with it.
What I've done is first studied these sensors to figure out the interfaces they use and designed an electric circuit that a) converts the current signal from the sensor to a format that a "SpeedoHealer" can use as its input, and b) takes the open-drain output of the "SpeedoHealer" and converts that back to current signal that is compatible with the BMW computer input.
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