Hobbs meter in EFIS?

[rightrudder]

Maybe this would be better over in "Glass Panel," but I thought there might be some general interest. Do most EFIS setups include a Hobbs function? And how many of you run a separate Hobbs meter? I've got the GRT Sport SX (still in box) and I can't find any mention of Hobbs in the user manual.

[Mike S]

Dont know about the Sport, but with the setup in my plane-----first generation screens, the EFIS has a log book function, and the EIS has a Hobbs.

The EFIS does display the Hobbs as sent from the EIS---------at least as far as I understand how the system works.

You do need to tell the EIS when to start the time running as I recall, choices were based on either RPM, or oil pressure.

[russcoburn]

I have the GRT Sport as well, there is a automatic flight log feature tied to airspeed if you have the built in GPS. This logs flights with day/timestamp and inserts waypoints and pre-populates a flight log you can edit further but I'm pretty sure there is no hobbs meter built into the GRT sport.

I also have a AFS 2500 engine monitor unit and it does have a built in hobbs/tach meter that I use.

[rightrudder]

Originally Posted by Mike S

Dont know about the Sport, but with the setup in my plane-----first generation screens, the EFIS has a log book function, and the EIS has a Hobbs.

The EFIS does display the Hobbs as sent from the EIS---------at least as far as I understand how the system works.

You do need to tell the EIS when to start the time running as I recall, choices were based on either RPM, or oil pressure.

Thanks, Mike and Russ.

I should be good then, since the EIS is part of the Sport SX system. I was a little surprised to see the separate EIS display in the box, as the primary display and EIS work together. Luckily, my panel plans are pretty simple, so there's plenty of real estate for another rectangular cutout.

[David Paule]

You can remote-mount the EIS.

Dave

[rightrudder]

Originally Posted by David Paule

You can remote-mount the EIS.

Dave

Yeah, I thought about that. Certainly a possibility; I just don't know how useful the extra screen would be, or whether I'll need access to the EIS's buttons down the road. For a cleaner panel, one thought was to mount it inside the map box, high up so there's still some storage underneath.

[Mike S]

Originally Posted by rightrudder

or whether I'll need access to the EIS's buttons down the road.

You will need them for setup, and depending on how you do the setup, you may need them later.

[rightrudder]

Originally Posted by Mike S

You will need them for setup, and depending on how you do the setup, you may need them later.

Sounds good. I'm leaning toward the map box solution.

[BobTurner]

The GRT EIS has the Hobbs timer in it.
GRT recommends starting with the Sport off, unless you have a secondary buss to run it. But the EIS can be on at start up, and can be set to alarm if there's no oil pressure. That does require mounting it on the panel.

[rightrudder]

Originally Posted by BobTurner

The GRT EIS has the Hobbs timer in it.
GRT recommends starting with the Sport off, unless you have a secondary buss to run it. But the EIS can be on at start up, and can be set to alarm if there's no oil pressure. That does require mounting it on the panel.

So I'll just wire the PFD and EIS to power up with the avionics master switch, and set the oil pressure to trigger the Hobbs at 5 psi or something. I'll get an annunciation through the PFD if pressure drops too low, and I believe that triggers the warning lamp as well.

I think my main screen will have all the engine monitoring in a strip along the bottom.