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teamgrumman(at)yahoo.com
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 Posted: Sun Dec 18, 2011 10:11 am Post subject: Battery box |
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Do I even need a box to put the battery in? The AGM batteries don't give off gases.
[quote][b]
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Sun Dec 18, 2011 11:22 am Post subject: Battery box |
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Gary
When I got the field approval 337 for the aft battery I had to put a vent tube in and drill a hole in the lower skin. Since the AGM Concorde battery had the vent and since the original design had a vent the FAA inspector said it was required for my field approval. Unless I wanted to go thru a series of tests and get backup data from Concorde to prove out a new design it was suggested by the field inspector to just put in the drain
But you are right about there not being a physical need for the drain for the AGM battery. You can even mount them on their side or upside down.
Regards
Ned
Sent from my iPhone
On Dec 18, 2011, at 12:08 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote]Do I even need a box to put the battery in? The AGM batteries don't give off gases.
[b]
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slacktide
Joined: 26 Jun 2010
Posts: 14
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| Posted: Sun Dec 18, 2011 12:19 pm Post subject: Battery box |
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They don't vent gas in normal operation and allegedly will not leak electrolyte even if the case has a hole. However they do have a pressure release valve that can blow if they are being severely overcharged, releasing oxygen, hydrogen, and perhaps some acid vapor.
Sent from my iPhone. Pls to xcuz my typos.
On Dec 18, 2011, at 12:08 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote]Do I even need a box to put the battery in? The AGM batteries don't give off gases.
[b]
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teamgrumman(at)yahoo.com
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| Posted: Sun Dec 18, 2011 3:07 pm Post subject: Battery box |
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The RG-35 doesn't have a vent tube like the 24 volt does.
From: 923te <923te(at)att.net>
To: "teamgrumman-list(at)matronics.com" <teamgrumman-list(at)matronics.com>
Sent: Sunday, December 18, 2011 11:19 AM
Subject: Re: Battery box
Gary
When I got the field approval 337 for the aft battery I had to put a vent tube in and drill a hole in the lower skin. Since the AGM Concorde battery had the vent and since the original design had a vent the FAA inspector said it was required for my field approval. Unless I wanted to go thru a series of tests and get backup data from Concorde to prove out a new design it was suggested by the field inspector to just put in the drain
But you are right about there not being a physical need for the drain for the AGM battery. You can even mount them on their side or upside down.
Regards
Ned
Sent from my iPhone
On Dec 18, 2011, at 12:08 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote]Do I even need a box to put the battery in? The AGM batteries don't give off gases.
http://www.matronics.com/conank" href="http://www.matronics.com/Navigator?TeamGrumman-List">http://ww========================
://www.matronics.com/contribution">http://www.matronics.com/contribution[b]
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Sun Dec 18, 2011 4:01 pm Post subject: Battery box |
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Oh yeah, Mine is the one with the manifold top that is a direct fit replacement for the Tiger battery mount. The manifold has the ears on it for the wing nuts to screw down onto the rods to hold the battery into the mount.
I used the lightest version of the specified battery for my Tiger and never have any start problems due to lack of voltage. That's with the high power requirement of the Skytek starter too. Why do you want to put in a heavier battery than the stock battery? There are other things you can do to get the tail induced drag down.....
Probably by the time you get an STC the new Lithium ion batteries will be available for our grummans. You might want to consider that before investing a lot of time into a battery that will probably fade away in the not to distant future. The lithuim ion battery will be half the weight of the current battery. Maybe even less
http://www.concordebattery.com/lion.php
Here are some old emails we exchanged on battery boxes:
---
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teamgrumman(at)yahoo.com
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| Posted: Sun Dec 18, 2011 5:37 pm Post subject: Battery box |
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I was thinking the G-35 due to the losses in the cables. Maybe I'm over working the problem. I can still put the smaller battery in the larger rack. Just can't go the other way.
The LiOn battery would be a good choice. It looks like a good idea. Question is, when will they be approved?
From: 923te <923te(at)att.net>
To: teamgrumman-list(at)matronics.com
Sent: Sunday, December 18, 2011 3:59 PM
Subject: Re: Battery box
Oh yeah, Mine is the one with the manifold top that is a direct fit replacement for the Tiger battery mount. The manifold has the ears on it for the wing nuts to screw down onto the rods to hold the battery into the mount.
I used the lightest version of the specified battery for my Tiger and never have any start problems due to lack of voltage. That's with the high power requirement of the Skytek starter too. Why do you want to put in a heavier battery than the stock battery? There are other things you can do to get the tail induced drag down.....
Probably by the time you get an STC the new Lithium ion batteries will be available for our grummans. You might want to consider that before investing a lot of time into a battery that will probably fade away in the not to distant future. The lithuim ion battery will be half the weight of the current battery. Maybe even less
http://www.concordebattery.com/lion.php
Here are some old emails we exchanged on battery boxes:
---
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Sun Dec 18, 2011 5:47 pm Post subject: Battery box |
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The Saber Toothed Tiger has the G-35 in the back with 00 cable but it's cranking 6 cylinders
It uses the piper box like in the photos I sent earlier
Sent from my iPhone
On Dec 18, 2011, at 7:33 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote]I was thinking the G-35 due to the losses in the cables. Maybe I'm over working the problem. I can still put the smaller battery in the larger rack. Just can't go the other way.
The LiOn battery would be a good choice. It looks like a good idea. Question is, when will they be approved?
From: 923te <923te(at)att.net (923te(at)att.net)>
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Sunday, December 18, 2011 3:59 PM
Subject: Re: Battery box
Oh yeah, Mine is the one with the manifold top that is a direct fit replacement for the Tiger battery mount. The manifold has the ears on it for the wing nuts to screw down onto the rods to hold the battery into the mount.
I used the lightest version of the specified battery for my Tiger and never have any start problems due to lack of voltage. That's with the high power requirement of the Skytek starter too. Why do you want to put in a heavier battery than the stock battery? There are other things you can do to get the tail induced drag down.....
Probably by the time you get an STC the new Lithium ion batteries will be available for our grummans. You might want to consider that before investing a lot of time into a battery that will probably fade away in the not to distant future. The lithuim ion battery will be half the weight of the current battery. Maybe even less
http://www.concordebattery.com/lion.php
Here are some old emails we exchanged on battery boxes:
---
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Sun Dec 18, 2011 8:43 pm Post subject: Battery Box |
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Gary
Have you thought about having Dave build just exactly what you are thinking about? Should be very easy to do with fiberglass.
[quote]
[b]
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flyv35b(at)minetfiber.com
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| Posted: Mon Dec 19, 2011 7:01 am Post subject: Battery Box |
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On 12/18/2011 8:40 PM, 923te wrote:
| Quote: | Gary
Have you thought about having Dave build just exactly what you are
thinking about? Should be very easy to do with fiberglass.
*
*
I've seen a couple really nice boxes made out of stainless steel - not
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cheap - made for a G35 (Bonanza STC).
Cliff
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flyv35b(at)minetfiber.com
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| Posted: Mon Dec 19, 2011 7:13 am Post subject: Battery Box |
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On 12/19/2011 6:59 AM, flyv35b wrote:
| Quote: |
On 12/18/2011 8:40 PM, 923te wrote:
> Gary
> Have you thought about having Dave build just exactly what you are
> thinking about? Should be very easy to do with fiberglass.
> *
> *
I've seen a couple really nice boxes made out of stainless steel - not
cheap - made for a G35 (Bonanza STC).
Cliff
What I meant by G35 was the battery size, not the model of Bonanza.
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teamgrumman(at)yahoo.com
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| Posted: Sat Dec 31, 2011 10:06 pm Post subject: Battery Box |
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I've been looking for an AC that covers the battery box. From what I've found about boats with AGM batteries, the AGM battery doesn't need a box to trap vapors like the wet battery.
[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Mon Jan 02, 2012 10:11 pm Post subject: Battery Box |
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Apparently, the Ercoupe doesn't need a battery box with the Concorde RG25 battery.
"The Exide AC-54 battery was equipped with a vent fitting for the overflow tube (P/N F54090-14). The Concorde CB-25 does not have a provision for connection to an overflow tube. Therefore, the Exide AC-54 battery may be replaced by the Concorde RG-25 battery only. The RG-25 battery does not need an overflow tube. When installing a Concorde RG-25 battery in place of the Exide AC-54 battery, the vent tube may be removed or tied off to the side of the battery. The original battery tray assembly (P/N F54091) may have rounded corners that will interfere with the square shape of the Concorde RG-25 battery. Similarly the different location of the battery terminals may not allow the use of the battery top assembly (P/N F54094 or 800314). When installing the Concorde RG-25 battery, the battery tray must have square corners and the top hold down assembly must not interfere with the battery terminals. The battery tray may have to be replaced with a F54091-101 battery tray assembly and the battery top hold down assembly may have to be replaced with a F54094-101 assembly"
Gary
Sent from my iPad
On Dec 18, 2011, at 8:40 PM, 923te <923te(at)att.net (923te(at)att.net)> wrote:
[quote]Gary
Have you thought about having Dave build just exactly what you are thinking about? Should be very easy to do with fiberglass.
| Quote: |
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ctric.com
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uilthelp.com
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matronics.com/contribution
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t">http://www.matronics.com/Navigator?TeamGrumman-List
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[b]
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