Battery Relocation to firewall

[6643]

I may have a copy of a 337 somewhere.

If you have the copy of the firewall battery installation, that would be great!

I found it. If you want a copy, send me a private message with your email address.

[matthewhinmann120cm]

I found it. If you want a copy, send me a private message with your email address.
[/quote]

I’ll send you a message. I’m curious about the installation procedures…

I decided to buy buy the SBS J16 Odyssey battery, and install it in the existing battery box. I mounted it with the PC680 mount bracket inside the battery box on the fwd wall. I think it turned out just fine. I don’t think the battery box is original with the plane.

You guys have helped a ton! Thanks for the info.

[matthewhinmann120cm]

I replaced my battery with an odyssey - removed the old battery box and installed the approved odyssey hold down bracket. I saved 1.5 lbs on the box and 7 on the battery. My IA wrote it as minor using the established PMA docs and a previous 337 for reference. I would not even consider mover the battery forward. I can’t imagine the effort would be worth the pound or two of wiring and the massive CG change. Currently I can load the plane with full fuel, two fatties and a big kid in the child seat and never get out of CG all the way to empty. I would be over gross but the plane would still be safe and controllable.

I decided to do the same thing. my battery box is not original, and I actually don't know where it came out of. I was a perfect fit for the Concorde RG-35A, and the J16 Oddessy battery hold-down bracket fir perfect inside the box. The new installation is even better than the original IMO...

[8014]

N120CM needs to go on a diet. The last W&B recorded has the plane at 1053 lbs E.W., of which I have verified by rolling it on scales. Since then, I removed the interior and old sound-proofing material. 14lbs worth.

Do you have metalized wings or a different engine? I ask because our 120 with fabric and a C-85 is over 100 lbs. slimmer at 939 lbs. EW (counting oil and unusable fuel) and she left the factory at 903 lbs.

[matthewhinmann120cm]

N120CM needs to go on a diet. The last W&B recorded has the plane at 1053 lbs E.W., of which I have verified by rolling it on scales. Since then, I removed the interior and old sound-proofing material. 14lbs worth.

Do you have metalized wings or a different engine? I ask because our 120 with fabric and a C-85 is over 100 lbs. slimmer at 939 lbs. EW (counting oil and unusable fuel) and she left the factory at 903 lbs.

I have metalized wings.