Myles,
I thought about that, but the Torqeedo is sealed so the only place to put a sensor would be on the outside of the housing near the prop with a magnet on the prop itself. That would look pretty ugly and might effect prop balance. Another idea I thought of was to turn the tach into a wind speed indicator by interfacing an old anemometer head I have in my junk box. I think I have a solution in need of a problem. ;-) But, I'm having fun.
Pat
--- In electricboats@yahoogroups.com, "Myles Twete" <matwete@...> wrote:
>
> Pat-
>
>
>
> Regarding the tach, it's hard to say.
>
> Some tachs have a switch on the back to select multiple cylinder engines.
>
> If you can get a hall effect or other type of switch sensor that has the
> sensed element spinning on the motor shaft, you could at least sense motor
> speed or some fraction or multiple of it. If you were real lucky it might
> give you prop speed at proper scaling.
>
>
>
> -MT
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