Imbalanced fuel consumption

[Simicro]

Hi,

I always start with left and right fuel tanks filled 100%.

Tank selector is on both.

I have a pilot and copilot of the same weigh.

I notice that usually the right tank empty faster than the left tank.

Eg: left = 18 gallons remaining ; right = 15 gallons remaining

I think there is an explanation ?

[Nick - A2A]

There is indeed and it's on page 85 of the manual Simicro.

NOTE: When the fuel selector valve handle is in the BOTH position in cruising flight, unequal fuel flow from each tank may occur if the wings are not maintained exactly level. Resulting wing heaviness can be alleviated gradually by turning the selector valve handle to the tank in the “heavy” wing. It is not practical to measure the time required to consume all of the fuel in one tank, and, after switching to the opposite tank, expect an equal duration from the remaining fuel. The airspace in both fuel tanks is interconnected by a vent line and, therefore, some sloshing of fuel between tanks can be expected when the tanks are nearly full and the wings are not level.

Nick

[Simicro]

Thanks Nick, and sorry for not having spot that on page 85