Hi -
I want to get the longest time possible in the air. My trainer has an os 61 and I want to get a 15 to 20 minutes flight - how big of a tank should I put in it?


where can I find info of "burned fuel per minute" or something of that nature. YES, I KNOW that it depends on how fast/slow you're flying, etc etc, but I am just looking for ball park figures

thanks