EFII Bus Manager

[TXFlyGuy]

How many here are flying with the EFII Bus Manager? It looks pretty good, and actually is similar in some ways to the auto-bus tie switching we have on Boeings.
I contacted the company, and their claim was they have never experienced a failure of the bus manager.

What is your experience?

http://www.flyefii.com/products/bus-managaer/

[rv7charlie]

If you have an electrically dependent a/c (engine, and/or, if IFR capable, panel), get an actual schematic of the box's guts & analyze failure modes.

There was an extensive discussion on the Aeroelectric list recently.

[TXFlyGuy]

The company claims no failures. It does have an emergency selector to manually select a battery to power the essential bus in the event of a failure.

No one here flying with this?

[rv7charlie]

Originally Posted by TXFlyGuy

The company claims no failures. It does have an emergency selector to manually select a battery to power the essential bus in the event of a failure.

No one here flying with this?

See my previous post.

[jcaplins]

I have one; and my -7 requires electrons to keep the engine running.
I had a problem with the Fuel pump switch-over circuitry during the initial testing after install. The problem was was taken care of perfectly by EFII.

I'm happy with it and if I could make any changes, it would be to add an "off" positions to the fuel pumps. (as it stands you can only switch between "1/auto" and "2".) I may add something to the switch/relay circuit sometime in the future to take care of that.

[TXFlyGuy]

Originally Posted by jcaplins

I have one; and my -7 requires electrons to keep the engine running.
I had a problem with the Fuel pump switch-over circuitry during the initial testing after install. The problem was was taken care of perfectly by EFII.

I'm happy with it and if I could make any changes, it would be to add an "off" positions to the fuel pumps. (as it stands you can only switch between "1/auto" and "2".) I may add something to the switch/relay circuit sometime in the future to take care of that.

Thanks. Our flight testing is a few months down the road. Good to hear that EFII gave you good support.

[Fred.Stucklen]

I've essentially installed my own design of this concept, and for a LOT less $$$. My aux fuel pump has OFF - AUTO - ON selection modes.

Originally Posted by TXFlyGuy

How many here are flying with the EFII Bus Manager? It looks pretty good, and actually is similar in some ways to the auto-bus tie switching we have on Boeings.
I contacted the company, and their claim was they have never experienced a failure of the bus manager.

What is your experience?

http://www.flyefii.com/products/bus-managaer/

[bret]

Dual EFII, I went with all manual high quality switches, my HDX will alert me if fuel pressure or volts get low, then I just confirm and flip a switch, BU pump, ECM, or battery. KISS!

[johnbright]

I would leave out the Bus Manager. EFII provides only a simplified schematic and no mention of FMEA. Bus Manager could be OK but "we never had a failure" is not an answer; for instance, you could fly 1,000 hours with a single magneto and say that.

Would you wire the fuel pumps the way EFII suggests with shared wires, breaker, and relay?

http://www.flyefii.com/media/Bus_Man...structions.pdf

[johnbright]

Originally Posted by rv7charlie

If you have an electrically dependent a/c (engine, and/or, if IFR capable, panel), get an actual schematic of the box's guts & analyze failure modes.

There was an extensive discussion on the Aeroelectric list recently.

rv7charlie... do refer to this thread? I don't necessarily read all the responses but I do read all that come from nuckolls.bob