RCU Forums - View Single Post - Flying Characteristics: Viper Q-500 Pulling up in Turn Number 1:
Old 04-26-2008, 04:29 PM
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Ed Smith
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Default RE: Flying Characteristics: Viper Q-500 Pulling up in Turn Number 1:

Thanks for all of the replies so far. But I am a bit confused and maybe someone could give a bit more detail on is this.
Let us start at the beginning. We will assume the incidences are correct.

Balance the airplane at the recomended point. Fly the airplane. If up trim is needed for level flight it is likely the airplane is nose heavy. Roll it inverted. It is still nose heavy, the up trim will now be down trim while inverted. The nose will drop really fast. This will confirm the nose heavy condition. Move the balance point rearward and retrim the elevator. If nothing is changed, while on knife edge, nose heavy and carrying up trim the airplane will come in on the #1 pylon. This will also confirm the nose heavy condition.

All of the above will be reversed if the airplane is tail heavy.

It can take 15-20 flights to get a racer close to racing trim.

Ed S