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fvalarm(at)rapidnet.net
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 Posted: Tue Nov 20, 2007 1:32 am Post subject: Location of battery bus |
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Good morning Bob,
Considering Z-13/20 architecture in an RV7A. The Vans recommended position for the battery is on the firewall in the engine compartment which I agree with. That being said, the contactors would be located nearby. Would it follow that the battery bus should also be located on the engine side of the firewall and if so, would it be appropriate to use a fuse block style as we've come to appreciate? In other words, would the fuse block style and associated faston terminals stand up in the FF environment? I would prefer to see the fuses inside the cockpit just aft of the firewall (cleaner environment), but to get to here there would be a little more than 6 inches of unprotected wire.
Thanks again.
Bevan [quote][b]
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nuckolls.bob(at)cox.net
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| Posted: Tue Nov 20, 2007 8:08 am Post subject: Location of battery bus |
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At 01:28 AM 11/20/2007 -0800, you wrote:
| Quote: | Good morning Bob,
Considering Z-13/20 architecture in an RV7A. The Vans recommended
position for the battery is on the firewall in the engine compartment
which I agree with. That being said, the contactors would be located
nearby. Would it follow that the battery bus should also be located on
the engine side of the firewall and if so, would it be appropriate to use
a fuse block style as we've come to appreciate? In other words, would the
fuse block style and associated faston terminals stand up in the FF
environment? I would prefer to see the fuses inside the cockpit just aft
of the firewall (cleaner environment), but to get to here there would be a
little more than 6 inches of unprotected wire.
|
Don't agonize over it. Do as you've suggested.
Make sure the always-hot wire coming through
the firewall is well absolutely not going to
suffer insulation failure by reason of poor
mechanical support/protection.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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Bill Schlatterer
Joined: 09 Jan 2006
Posts: 195
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| Posted: Tue Nov 20, 2007 9:22 pm Post subject: Location of battery bus |
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Bevan, this is what I did on my 7a for block locations. Small Tab forest on FW side to large forest on cabin side. Fuse blocks on the inside are on a swing down tray. Ran the battery lead to the always hot bus to a fuse slot which really protects the wrong end of the wire but it seemed better than nothing (maybe a fusible link on the battery end would be better). Wire is about 14" from Battery to bus as I remember it but not likely to have a problem.
Bill S
7a
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of B Tomm
Sent: Tuesday, November 20, 2007 3:28 AM
To: aeroelectric-list(at)matronics.com
Subject: Location of battery bus
Good morning Bob,
Considering Z-13/20 architecture in an RV7A. The Vans recommended position for the battery is on the firewall in the engine compartment which I agree with. That being said, the contactors would be located nearby. Would it follow that the battery bus should also be located on the engine side of the firewall and if so, would it be appropriate to use a fuse block style as we've come to appreciate? In other words, would the fuse block style and associated faston terminals stand up in the FF environment? I would prefer to see the fuses inside the cockpit just aft of the firewall (cleaner environment), but to get to here there would be a little more than 6 inches of unprotected wire.
Thanks again.
Bevan | Quote: |
href="http://www.matronics.com/contribution">http://www.matronics.com/chref="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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fvalarm(at)rapidnet.net
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| Posted: Tue Nov 20, 2007 10:18 pm Post subject: Location of battery bus |
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Thanks Bill
Looks very good. Nice fuse block mount. Can you access it without taking a control stick out and crawling underneath? Maybe just leaning over sideways from the pilot seat?
I see a SD8 ? alternator. Can I assume you've wired up per Z13/8? Just a guess, correct me if I'm wrong. Based on Bob's comments, I'm thinking that Z13/8 will be ideal for me. Not sure what size Odyssey batt I need. Have not completed a load analysis yet. If you are flying yet, I would like to know what schematic Z drawing you're using and how you like it.
Bevan
Attached is a pic of my panel so far. No real wiring done yet. Just making everything fit.
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Bill Schlatterer
Sent: Tuesday, November 20, 2007 9:21 PM
To: aeroelectric-list(at)matronics.com
Subject: RE: AeroElectric-List: Location of battery bus
Bevan, this is what I did on my 7a for block locations. Small Tab forest on FW side to large forest on cabin side. Fuse blocks on the inside are on a swing down tray. Ran the battery lead to the always hot bus to a fuse slot which really protects the wrong end of the wire but it seemed better than nothing (maybe a fusible link on the battery end would be better). Wire is about 14" from Battery to bus as I remember it but not likely to have a problem.
Bill S
7a
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of B Tomm
Sent: Tuesday, November 20, 2007 3:28 AM
To: aeroelectric-list(at)matronics.com
Subject: Location of battery bus
Good morning Bob,
Considering Z-13/20 architecture in an RV7A. The Vans recommended position for the battery is on the firewall in the engine compartment which I agree with. That being said, the contactors would be located nearby. Would it follow that the battery bus should also be located on the engine side of the firewall and if so, would it be appropriate to use a fuse block style as we've come to appreciate? In other words, would the fuse block style and associated faston terminals stand up in the FF environment? I would prefer to see the fuses inside the cockpit just aft of the firewall (cleaner environment), but to get to here there would be a little more than 6 inches of unprotected wire.
Thanks again.
Bevan | Quote: |
href="http://www.matronics.com/contribution">http://www.matronics.com/chref="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
|
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http://www.matronics.com/Navigator?AeroElectric-List |
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longg(at)pjm.com
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| Posted: Wed Nov 21, 2007 9:46 am Post subject: Location of battery bus |
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I am at the same decision point. There seems to be a funny rumor out there that the battery buss needs to be sitting on top of the battery. Voltage drop for 12-14 volts may be an issue over 12' but not over 12". I will mount them inside where it is clean and dry but still close to the firewall.
--
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longg(at)pjm.com
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| Posted: Wed Nov 21, 2007 4:45 pm Post subject: Location of battery bus |
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Great job Bill. Your work looks good.
[quote]
--
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http://www.matronics.com/Navigator?AeroElectric-List |
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Bill Schlatterer
Joined: 09 Jan 2006
Posts: 195
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| Posted: Wed Nov 21, 2007 8:15 pm Post subject: Location of battery bus |
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Bevan, I am using Z13/8 with the HD Endurance bus plus an Aux Bat and bus for the EFIS. I tried to shoot a picture at about the same angle as your picture with the tray down. I personally think it's very easy to get to, but probably not in flight. My copilot stick is removable, pic attached. Also Aux Bat and bus under AHRS. Note battery (P212 7ah) is attached below AHRS.
Hope this helps, locations work nice for me.
Bill S
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of B Tomm
Sent: Wednesday, November 21, 2007 12:14 AM
To: aeroelectric-list(at)matronics.com
Subject: RE: AeroElectric-List: Location of battery bus
Thanks Bill
Looks very good. Nice fuse block mount. Can you access it without taking a control stick out and crawling underneath? Maybe just leaning over sideways from the pilot seat?
I see a SD8 ? alternator. Can I assume you've wired up per Z13/8? Just a guess, correct me if I'm wrong. Based on Bob's comments, I'm thinking that Z13/8 will be ideal for me. Not sure what size Odyssey batt I need. Have not completed a load analysis yet. If you are flying yet, I would like to know what schematic Z drawing you're using and how you like it.
Bevan
Attached is a pic of my panel so far. No real wiring done yet. Just making everything fit.
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Bill Schlatterer
Sent: Tuesday, November 20, 2007 9:21 PM
To: aeroelectric-list(at)matronics.com
Subject: RE: AeroElectric-List: Location of battery bus
Bevan, this is what I did on my 7a for block locations. Small Tab forest on FW side to large forest on cabin side. Fuse blocks on the inside are on a swing down tray. Ran the battery lead to the always hot bus to a fuse slot which really protects the wrong end of the wire but it seemed better than nothing (maybe a fusible link on the battery end would be better). Wire is about 14" from Battery to bus as I remember it but not likely to have a problem.
Bill S
7a
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of B Tomm
Sent: Tuesday, November 20, 2007 3:28 AM
To: aeroelectric-list(at)matronics.com
Subject: Location of battery bus
Good morning Bob,
Considering Z-13/20 architecture in an RV7A. The Vans recommended position for the battery is on the firewall in the engine compartment which I agree with. That being said, the contactors would be located nearby. Would it follow that the battery bus should also be located on the engine side of the firewall and if so, would it be appropriate to use a fuse block style as we've come to appreciate? In other words, would the fuse block style and associated faston terminals stand up in the FF environment? I would prefer to see the fuses inside the cockpit just aft of the firewall (cleaner environment), but to get to here there would be a little more than 6 inches of unprotected wire.
Thanks again.
Bevan | Quote: |
href="http://www.matronics.com/contribution">http://www.matronics.com/chref="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List
href="http://forums.matronics.com">http://forums.matronics.com
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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