wasted horsepower

[Sphere]

Sorry for offtopic but what tach sensor do you use I would love one for my hatz.

[alexanderfoti]

I use a hall effect sensor with 2 pins, connected to a boat tach.

Luckily the boat tack is configured for 25 fins per rpm, and I have 27 (I think..). so it reads slightly over, I have marked redline on the gauge, but i know in my head that at 3000 rpm, that engine is actually at 2800rpm.

It also responds very slowly lol

I ended up buying one of these, but didnt need the converter, as its desinged to run a petrol engine tach.

I used the sensor from it though, its just a hall effect sensor. They are also used as abs sensors, and CPS (crank position sensosrs)

[Nanko]

Sorry for offtopic but what tach sensor do you use I would love one for my hatz.

You dont need a sensor,use the alternator frequency instead
A simple frequency to voltage converter connected to a analogue or digital display

[Sphere]

Sorry for offtopic but what tach sensor do you use I would love one for my hatz.

You dont need a sensor,use the alternator frequency instead
A simple frequency to voltage converter connected to a analogue or digital display

Thanks, great suggestion. I will see if there is something off the shelf.

[Nanko]

Search for LM2917 , maybe there is a kit available