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Old 10-27-2011 | 12:49 PM
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RCISFUN
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From: Erie, PA
Default RE: Balancing question?

ORIGINAL: proline8000

I have been told by almost all jet pilots that you balance your jet with a full UAT. I think and know that this is a dangerous practice. The weight of the fuel/oil mixture is almost 1 oz per oz of fuel. This means that you are balancing your jet with almost ½ a pound of fuel that may not always be there. Every time I have seen a turbine run out of fuel the UAT is sucked dry. This means that when you are in the worst position during a flight ( you run out of fuel) your jet (witch is now a glider and not a very good one) you may be tail heavy. Whether you are balancing a ½ control line airplane or a 747 you never balance it with usable fuel in it…..
Actually Jet A is around 6.75 Lbs / Gal (Varies with Temperature) , so that 4 Fluid Oz UAT would hold approximately 3.38 oz of liquid weight + weight of the UAT, not quite a 1/2 Lb

I agree with the rest I always balance with a full UAT