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1. 06:14 AM - Re: Seeking Battery Box for Group Size BTX20L Battery (Art Zemon)
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| Subject: | Re: Seeking Battery Box for Group Size BTX20L Battery |
Bob,
You're absolutely right: a tray would be fine. I was sloppy when I wrote my
email. I have a high-sided tray now and just want a smaller one.
In the BD-4, I have to bolt something tray-ish or box-ish to the supports
behind the firewall. There are no horizontal surfaces FWF on which I can
rest the battery.
-- Art Z.
On Thu, Dec 1, 2022 at 11:30 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 05:26 PM 11/30/2022, you wrote:
>
> Folks,
>
> I decided to try a cheap AGM battery in my airplane and it is working
> great. So well that I want to swap out the large battery box for one that
> is smaller and fits more nicely. But my battery ( Super Start Power Sport
> Battery
> <https://www.oreillyauto.com/detail/c/power-sport-agm/more-powersport/atv
---motorcycle-accessories/batteries/adae772e612e/super-start-power-sport-ba
ttery-group-size-btx20l-agm/ssbn/etx20l?q=batteries&pos=0>)
> is slightly larger than the EarthX batteries so their boxes won't fit.
>
>
> Why are you putting a box around an SVLA battery?
> The need for an enclosure is a legacy requirement
> for dealing with fumes and leaks from flooded
> batteries of yesteryear. Many were fitted with
> drains that would take bubbled-up acidic
> water overboard.
>
> The SVLA battery contains so little liquid that
> it's not possible for it to make an acidic
> mess in the airplane.
>
> All you need to do is capture the thing
> mechanically.
>
> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_1.jpg
> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_2.jpg
> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>
> Some years back we did some studies on tensile strength
> of straps with Velcro closures. Some 1" wide straps
> with 6" of hook-n-loop engagement had a tensile
> strength of over 300 pounds. Two of those strips
> holding an SVLA battery in a shallow tray would
> offer retention in well over a 20G event. Best
> yet, you can secure the battery without tools!
>
> Closing the battery up in a box only adds weight
> and cost of ownership, it reduces the battery's
> ability to reject heat.
>
> Bob . . .
>
> Un impeachable logic: George Carlin asked, "If black boxes
> survive crashes, why don't they make the whole airplane
> out of that stuff?"
>
--
My blog: CheerfulCurmudgeon.com
*=8B**=8BWrinkles mean you laughed. Grey hair means you cared.
Scars mean you
lived.*
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