As I near completion of my first 1/4 scale i am running into space constraints, who'd of thought. The engine is a kiortz 41cc. I got a 32 oz tank but it is not going to fit as neatly as I had hoped. If I drop to a 24 oz it would be much neater. That would allow me to put by batteries in the nose. That helps wieight and balance.

What size tanks do folks use on this class of engine?

A 24 ounce should be more than enough. Would probably fly 20 minutes or even more, depending on throttle useage.

AV8TOR

I have a 35cc, it's not a Quadra it's the other one.
Any way I get 30 minutes out of a 24 oz tank.

A G-62 on my Mr Mulligan gets about 45 minutes on 32oz tank.