Another E/P mag question

Mike Ice · #1 10-14-2007, 02:06 PM

I have an E and a P mag and I want to use an Electronics International Tachometer with them.

Is anyone using an EI tachometer with E/P mags?

Have you discovered any issues? What were they?

Thanks,

Mike
wiring, firewall forward

mike newall · #2 10-17-2007, 08:00 AM

The install manual for the E/P Mag shows a couple of ways of using the pulse that comes from them. Either use the P lead with a resistor or use the #6 output ( I think ) from the plug and set up the tacho to count the pulses.

We are using the extra lead into a Dynon 120.

N941WR · #3 10-17-2007, 09:59 AM

Mike,

The Dynon EMS D10 has two tach inputs. In my set up, I connected one lead to each P-mag. That way the EMS tach does not drop to zero when I turn off a P-mag.

petehowell · #4 10-17-2007, 10:28 AM

Did exactly what Bill did, works great.

scard · #5 10-17-2007, 12:02 PM

FYI, The Pmag continues to output a tach signal on the tach output even when completely turned off. I have my tach wired to only one pmag tach output and it never drops out on run-up check.

petehowell · #6 10-17-2007, 12:37 PM

I was RPM "Blinded" until I hooked up the PMag Tach lead when the EMag was powered down.

N941WR · #7 10-17-2007, 01:13 PM

Quote:

Originally Posted by scard

FYI, The Pmag continues to output a tach signal on the tach output even when completely turned off. I have my tach wired to only one pmag tach output and it never drops out on run-up check.

Is this true when grounded and power is pulled, as per the Bob K. drawings?

scard · #8 10-17-2007, 01:19 PM

Quote:

Originally Posted by N941WR

Is this true when grounded and power is pulled, as per the Bob K. drawings?

Works for me.