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-   -   Input Needed (https://vansairforce.net/community/showthread.php?t=161348)

William 06-13-2018 05:46 PM

Quote:

Originally Posted by Av8torTom (Post 1266686)
Thanks for all the input.

I'm still looking for advice for the lest place to locate the main electric bus

You probably already know this but in your diagram the circuit breakers are your main power bus. The circuit breakers get tied together with copper bar and then a hot wire is bolted somewhere on the copper bar. Hot wire being activated through the master switch.

Bill

Bugsy 06-13-2018 05:51 PM

Screen sizes
 
Don?t be afraid to put smaller screen size on pilots side. Gives you more options for backups etc. plus the map is what really takes up real estate on the s teen and that goes best on the second screen.

I have a single 7inch screen with PFD,map and engine instruments all sharing the same real estate. Ifr is no problem. The PFD doesn?t need to be big.

sahrens 06-13-2018 06:12 PM

By your post it looks like you are already using a software product to design your panel. I used UpNorth Aviation to draw my panel. Bill was easy to work with while designing my panel and he has a library of most of the items placed on panels. Why use him? (there are others that provide the same kind of service)

During the design process Bill would send me a full scale PDF of my panel. I would print it at an office supply store, then tape it to my panel. That way I could see how the placement of switches, EFIS, CBs etc actually looked from the pilot's seat. Could I reach them, were the switches in a logical sequence, can I really fit the EFIS where I want it. I would mark changes on the printed panel, send an email to Bill, wait for the update and repeat the process. It really helped me avoid some mistakes that would have been costly to fix. I really recommend that process.

Of course if your getting that through the software you are using, you are miles ahead of me. Good luck with the panel.

Av8torTom 06-13-2018 06:15 PM

Quote:

Originally Posted by William (Post 1266699)
You probably already know this but in your diagram the circuit breakers are your main power bus. The circuit breakers get tied together with copper bar and then a hot wire is bolted somewhere on the copper bar. Hot wire being activated through the master switch.

Bill

I?ve not seen that arrangement. All the wiring diagrams I?ve seen thus far show wires going from the bus to the breakers.

I?m thinking I should place the main bus and the avionics bus in the middle top of the sub panel.

Thoughts?

Carl Froehlich 06-13-2018 06:21 PM

Quote:

Originally Posted by Av8torTom (Post 1266710)
I?ve not seen that arrangement. All the wiring diagrams I?ve seen thus far show wires going from the bus to the breakers.

I?m thinking I should place the main bus and the avionics bus in the middle top of the sub panel.

Thoughts?

Not sure why you are tripping over this.

Once you have the panel layout for the avionics, any logical grouping of breakers is the path forward. Drill the holes and mount the breakers - done.

PM me if you want details on a two battery power distribution design.

Carl

Mike S 06-13-2018 06:23 PM

Quote:

Originally Posted by William (Post 1266699)
You probably already know this but in your diagram the circuit breakers are your main power bus. The circuit breakers get tied together with copper bar and then a hot wire is bolted somewhere on the copper bar. Hot wire being activated through the master switch.

Bill

Yep, what he said.

You can also use short pieces of copper bar to gang together like items, such as all avionics, all lights, etc.

I buy copper pipe couplings and cut off a ring a bit over 1/4" then cut it open and flatten out to make a buss bar for breaker hookup.

William 06-13-2018 06:48 PM

Quote:

Originally Posted by Av8torTom (Post 1266710)
I?ve not seen that arrangement. All the wiring diagrams I?ve seen thus far show wires going from the bus to the breakers.

I?m thinking I should place the main bus and the avionics bus in the middle top of the sub panel.

Thoughts?


A quick search brought this up. Hope this helps, a picture with worth.... http://www.vansairforce.com/communit...Copper+bus+bar

rv7charlie 06-13-2018 06:54 PM

Tom,

Here's a useful description of an electrical buss (bus; busbar, etc):
https://en.wikipedia.org/wiki/Busbar

If you're using breakers, the bus is the set of hot terminals on the breakers, strung together with wire or a metal bar (see previous posts), which is why I mentioned the complexity of wiring a 2D array (grid) in my earlier post.

I hate to sound like a tape loop, but have you read the Aeroelectric Connection book yet? If not, you might want to put design work in pause and go there, first.

Charlie

TJCF16 06-13-2018 07:50 PM

You might want to put the A/P head on top and put the radios down low. This is because the A/P head is shallow and will fit high in the middle with out cutting the support.

wjb 06-13-2018 11:23 PM

Quote:

Originally Posted by Av8torTom (Post 1266620)
Hello - I'm starting to think about the layout of my panel.....


Just FYI ... the Van's .dxf drawings of the panel show the blank WITHOUT the bend ... the actual panel is about 1 inch shorter with the bend at the bottom (guess how I know).


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