How to mount two batteries
There seems to be many builders interested in a two battery power distribution design, but get tripped up on how/where to mount the batteries.
I just completed the mounts for two PC-625 batteries in my new project. I used a similarly equipped flying RV-8 W&B as the data to calculate the new W&B for one battery mounted in the forward baggage well, and one battery mounted in the standard spot aft of the baggage compartment. For a standard IO-360-M1B engine and a Hartzell BA CS prop, the W&B comes out just about perfect (better than one battery forward or one battery aft).
Both battery trays are modified from stock Van's trays.
If anyone is interested, PM me your email address and I'll provide battery mounting photos and wiring instructions.