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As the holder of an MSE(IOE) - Yeah some folks would call it imaginary engineering - I feel compelled to point out that all control labeling should talk to what function is being achieved. You do not ...

Two things wrong with the last statement:

Changing parts means it is potentially a new design.

With only seven of these ever having been flown, the original design is not necessarily a proven de ...

I have several points that I feel must be made. Maybe I am talking to Pete, maybe I am talking to other folks.

Please, please, please prevent your system from turning into a Greek Tragedy. Pay att ...

Sorry I did not see this sooner.

No lack of ambition in this project. Operational risk in this bird is higher than I am comfortable with, but the OP and I are different folks...

Before we get in ...

Hmm, I find this interesting from a couple fronts. Yes, 4AWG gives us a little more voltage drop but with two batteries carrying the load (according to both the OP and for my Z-14 arrangement) that se ...

In using the direction we all read and seriously buy into from the AeroElectric Connection, I have asked what happens if this piece misbehaves? Found a bunch around the battery. How can a main bus go ...

We have had a rather lively discussion over at: https://www.homebuiltairplanes.com/forums/threads/switching-options-of-essential-equipment.49627

No one had a better switch setup allow either elemen ...

[quote="Eric Page"]Have you looked at Bob's newest electrical architecture, Z-101B?

http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z101B.pdf

Yes. I have been keeping up. A fri ...

[quote="alec(at)alecmyers.com"]Isn’t that what Schottky diodes are for?

This and another post suggested diode isolation.

Trouble with adding elements to our systems is they too have ...

Recently I spotted a document from a well known brand of EFII recommending an “Essential Buss” backed up with a Aux Battery and simple switch to connect it. While this is supposed to make powering ...

We all know we need backups on any circuit needed for comfortable completion of a flight. I aimed for that. I have several circuits that fit that need, things like pumps and ECU's and Ignition Coils. ...

This one:

https://www.actuonix.com/p16-50-256-12-p

I calculated hinge moments on my trim tabs, and the other P-16's would back drive, but the 256:1 was adequate.

Doing your own homework is e ...

Charlie,

Not Menzimer, using Actuonix P-16P for elevators, P-16L for rudder and aileron. As light as MAC, fits in my stabilizers, less expensive, rated for dust and condensation, right speed, and e ...

Thanks for the knowledgeable responses.

It looks like nothing I have in the back end is terribly sensitive, and the thinking around the topic is mostly fuss over nothing. So, in the aft end of the ...

Before we get too far into implying that I listen to poor sources, my one and only source of advice on all of this has been "The AeroElectric Connection" by Bob Nuckolls, 12th edition. Speci ...

Here is my little problem. I am trying to wire my fiberglass airplane with internal antennas properly. I have little insight on electromagnetic compatibility. Please help.

I know that I am suppose ...

The expensive commercial splitters and decouplers are one option. The other is building them from Jim Weir's Attenna Reference Text. It is available on this page of his website.at:

http://www.rsten ...

If the battery contactor fails open during flight (unlikely), how will the pilot know it?

When the pilot pulls the throttle to idle, voltage drop from 14 might be noticed.

A further point is to ...

Answering the OP questions in order:

1) The CB is usually part of the crowbar over voltage protection for the alternator. If it is fed by a long wire, it can be shorted without tripping the downstr ...

All things can break. The question of this experienced product engineer is then how often does this occur and how severe is the result of a failure. Some might take the perspective that the risk of co ...