Replies to This Discussion

Permalink Reply by Jan Eggenfellner on February 17, 2023 at 7:18am

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	1450-1700
RPM Cruise	4200-5200 (5600 redline)
Voltage	Above 13.4 (13.8-14.3 in flight)

• ▶ Reply

Permalink Reply by Steven M Bray on February 17, 2023 at 12:13pm

Jan,

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".

• ▶ Reply

Permalink Reply by Jan Eggenfellner on February 17, 2023 at 3:03pm

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

• ▶ Reply

Permalink Reply by Steven M Bray on February 18, 2023 at 8:07am

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.

• ▶ Reply

Permalink Reply by Steven M Bray on February 24, 2023 at 1:21pm

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.

• ▶ Reply

Permalink Reply by Joe Donohue on February 17, 2023 at 9:19am

Thanks Jim

• ▶ Reply