Hi,
I am using 10% Omega fuel and my engine swallow ~ 400cc in 7 minuts flight ( full thortole )
is that normal ?

That's about right for full throttle contineous. I use a 400cc tank and get 10 minutes flight but at an average of 1/2 to 2/3 throttle.

Denis

Yea, mine eats the fuel also, 10 minutes 450cc tank.

Let me ask it on a diffrent sort is it possible that my engine is an "alcoholic" ?
is there any reason for anormaly fuel consumption in full ?

I would figure that since it is twice the size as a .46, it would use close to twice the fuel. I have both an OS .91FX and a Magnum .91XLS and, as I recall, I have either 14 or 16 ounce tanks in the planes. I am using Ultra Thrust tuned mufflers on both.

.91 4-strokes are more economical, but 2-strokes go through a lot.

That's about right for a .91 two stroke. Most .91 4-strokes are much more fuel efficient. For instance, I get 20 minutes on 400cc tank using a pumped OS .91FS 4-stroke running on 10% fuel.

Can you tell what kind of fuel are you using, i noticed the flight duration depend on what fuel i am using


Omega 10 % - 7 mintus
Some Local mixed fule - 9 minutes ( i usually don't use it beacuse it contain high % oil, and a lot of pepole said that it's low quality as well )

I'm using Powermaster synthetic/castor blend with 18% oil content. Yes, that's 20 minutes on a 400cc tank at full throttle, but that's on an OS .91 four stroke, not two stroke.