My latest EV project

Author	Message
galderdi Regular Member Joined: 12/08/2016 Location: Australia Posts: 99	Posted: 10:58pm 14 Dec 2021         Davo99 said   Will the tach on the instrument cluster be used to measure motor or gearbox speed or of some other use? I don't know if motor speed is a concern on electrics given the flat torque curve.   The surround is interesting and you seem to be making good progress on this. The motor doesn't have a standard way to measure revs. The only way I could do it would be to glue a magnetic sensor on to the end of the shaft. Revs are important but only a slight risk with my voltage. The higher the voltage the greater the risk as they would spin more willingly. When people talk about a flat torque curve they are correct but misleading. The curve is very consistent but it does drop as the revs increase. In other words flat does not mean horizontal. My setup has a driver to show current through the tacho. Not sure how useful that will be. Maybe a novelty for the passenger. The dash is coming along and has even improved since these photos. But I still need to refine it quite a bit before I will be happy.