ORIGINAL: BillS
You can always install a tank larger than necessary and measure the flight time against fuel use. Then you can adjust the fill by lowering the vent tube.
Also tanks are inexpensive and you can easily change the tank size later if desired.
I would start with a 12 to 16 oz tank.
Bill
Bill
Exactly what I did! God knows, there's a cavern in the belly of this beast!

By some calculations, burning 1.25oz a minute would make for a short flight, but I don't fly with the hammer down all the time! WOT only when necessary!
If I can get an average of 10>12 minutes, I'l be happy! Share the air, I say!

Have fun...that's what it's all about~~~~~
Zee
AMA129570