Balancing The Model - QuiQue's Aircraft Yak-54S Assembly Manual

Balancing the Model

Perhaps one of the most important things that you need to check before you fly
your plane is your model C.G. Correctly balancing an aerobatic model is critical
to its performance and flight characteristics. An unbalanced model can be very
hard to control. Please make sure that you carefully check the C.G of your plane
before you attempt to fly it.
C.G Location
Measuring 174 mm from trailing edge forward to wingtip would give you best 3D
and precision flying. However, the furthest you can go from trailing edge to wing
tip is 184mm that means you would have a slightly nose heavy model and the aft
limit from trailing edge to wing tip is 168mm. See Figure 74 & 75 for these three
locations.
Quique's Recommended C.G.
Figure 74
Figure 75
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