Battery Mount decision

itisgood · Post by **itisgood** » Mon Sep 27, 2010 8:27 pm

What is the consensus is it better to mount the battery on the firewall or in the fuselage?
Dave

Brantel · Post by **Brantel** » Tue Sep 28, 2010 7:17 am

RV7's tend to be more tail heavy than the other models empty (not sure what model your building). Take this into consideration for your choice.

Light prop and aft mounted battery could really be a problem with a 7.

I put it on the firewall since that was the standard Van plan and it was super easy to do.

Post by **bullojm1** » Tue Sep 28, 2010 9:46 am

As Brian said, the majority of RV-7's, if not all have firewall mounted batteries. In addition to just moving the weight of the battery from the firewall to the fuselage, you will have significantly more 2 gauge wire running to forward of the firewall. This contributes additional weight, plus the chance of a fire hazard if there was ever a short.

itisgood · Post by **itisgood** » Tue Sep 28, 2010 7:17 pm

Good thoughts gentlemen, Thanks for the replies.
I am building a RV7A and the plans call for holes in the bulkheads for a rear battery. I put in the holes but I was not sure if I wanted to use them.
Your information was very useful.
Dave

cjensen · Post by **cjensen** » Wed Sep 29, 2010 7:16 am

Regardless of where you put the battery (put it on the firewall if you are gonna use a Lycoming), you'll use every hole you can thru the spar and bulkheads...