I’m configuring a Dynon 120 to a Viking 130. Would someone have the numbers for red line, yellow and green arcs of


oil and fuel pressure

oil and coolant temp



and the pulse/rev value?

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Hey Rick - 1 pulse per revolution. I think toward the back of the POH I sent some time ago also has this information in it for our 650:

Engine Monitoring Parameters

Coolant Temperature

180-220F (220F max)

Coolant System Pressure

4-5 psi

Gearbox Oil Temperature

100-180F (never exceed 200F)

Oil Pressure

20-80 PSI

Fuel Pressure

43 PSI (42-47 nominal)

RPM Idle


RPM Cruise

4200-5200 (5600 redline)


Above 13.4 (13.8-14.3 in flight)


So why does the Viking View RPM switch to a flashing, highlighted "150 MPH" at 5100 RPM? That is what I had been taking as "Red Line".

I'm not sure I understand. Do you have pictures or can you elaborate? -Alissa

Next time I go up I'll get photos or video. Somewhere around 5100-5200 the RPM numbers on the VV change to "150 MPH" in the highlighted reverse style used when something is out of bounds. I always took that to mean that an overspeed of the engine or prop was nearing (some sort of Vne setting in the computer?). I usually cruise at 4600-4800 anyways.

Ok, I explained that badly. It is the Oil Pressure indication which switches over to indicate "Speed" of 150mph in attention highlight. The RPM continues to indicate as expected. I've attached a couple of captures of the VV.

Thanks Jim


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