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  #1  
Old 02-18-2019, 06:37 PM
dbaflyer dbaflyer is offline
 
Join Date: Oct 2009
Location: Iowa USA
Posts: 195
Default Battery box too narrow

Went to install my battery tonight and it would not fit. The left side started to slide in, but the right side would not go. Removed the battery box from FW and measured it. The right side is only 2 and 29/32nds. This is a van's battery box that was already put together. Just needed to rivet on the angle on either side. I see my only alternative to cut the right front corner, widen it to the right size and install a piece of angle on the outside of the box to hold it in place. Anyone else have this issue? Seems odd to me that the part would come undersized.

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  #2  
Old 02-18-2019, 06:41 PM
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Mike S Mike S is offline
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Location: Dayton Airpark, NV A34
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Does your battery have the metal shell on it??
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  #3  
Old 02-18-2019, 07:36 PM
dbaflyer dbaflyer is offline
 
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The battery is from Apex and the dimension is 3 inches wide which is what it should be.

Apex APX12180 12 Volt 18ah Sealed Lead Acid Battery
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  #4  
Old 02-18-2019, 11:56 PM
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erich weaver erich weaver is offline
 
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Location: santa barbara, CA
Posts: 1,754
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If you are gonna hack up the box anyway, consider adding hinge material to the front corners so that when you need to remove the battery you can just pull the hinge pins and then pull the battery out the front instead of having to pull it out vertically.

Erich
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  #5  
Old 02-19-2019, 12:43 PM
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JonJay JonJay is offline
 
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Location: Battleground
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Quote:
Originally Posted by erich weaver View Post
If you are gonna hack up the box anyway, consider adding hinge material to the front corners so that when you need to remove the battery you can just pull the hinge pins and then pull the battery out the front instead of having to pull it out vertically.

Erich
Just keep in mind the battery is heavy and the box and mounts need to withstand the g forces of a less than fatal accident. Batteries bouncing around after a very hard landing could make a bad situation much worse.
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  #6  
Old 02-19-2019, 04:45 PM
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erich weaver erich weaver is offline
 
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Quote:
Originally Posted by JonJay View Post
Just keep in mind the battery is heavy and the box and mounts need to withstand the g forces of a less than fatal accident. Batteries bouncing around after a very hard landing could make a bad situation much worse.
Pretty sure a good quality hinge riveted to the battery box and the associated hinge pins can handle a rough landing with ease.

Erich
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  #7  
Old 02-19-2019, 05:57 PM
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JonJay JonJay is offline
 
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Quote:
Originally Posted by erich weaver View Post
Pretty sure a good quality hinge riveted to the battery box and the associated hinge pins can handle a rough landing with ease.

Erich
Not a rough landing, it should withstand a non fatal but severe, total the airplane, but still be survivable kind of landing. A hinge might do just fine, but I would do the engineering before I made that mod. There are very specific rules on battery mounts.
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  #8  
Old 02-19-2019, 09:36 PM
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Z-EDD Z-EDD is offline
 
Join Date: Oct 2013
Location: Harare, Zimbabwe
Posts: 230
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Quote:
Originally Posted by dbaflyer View Post
Went to install my battery tonight and it would not fit. The left side started to slide in, but the right side would not go. Removed the battery box from FW and measured it. The right side is only 2 and 29/32nds. This is a van's battery box that was already put together. Just needed to rivet on the angle on either side. I see my only alternative to cut the right front corner, widen it to the right size and install a piece of angle on the outside of the box to hold it in place. Anyone else have this issue? Seems odd to me that the part would come undersized.

I used a locally available battery and also found that it would not quite fit. In my case the problem was the radius (or lack of) at the corners. I ended up cutting away the rear of the battery box, and saving a few ounces. I then still had to space the box away from the firewall with washers.

I remember thinking at the time that the rear of that box is redundant. It just sits up against the firewall.

I must say though, if you could find a "front opening" solution, that would make removing the battery so much easier!
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  #9  
Old 02-20-2019, 12:21 AM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
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Quote:
Originally Posted by Z-EDD View Post
I used a locally available battery and also found that it would not quite fit. In my case the problem was the radius (or lack of) at the corners. I ended up cutting away the rear of the battery box, and saving a few ounces. I then still had to space the box away from the firewall with washers.

I remember thinking at the time that the rear of that box is redundant. It just sits up against the firewall.

I must say though, if you could find a "front opening" solution, that would make removing the battery so much easier!
The back is anything but redundant. Your battery is being held in with .008 or .010 SS. That is not a lot stronger than tin foil and your battery weighs 12 pounds. That fire

Larry
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