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Old 12-27-2008, 09:57 AM
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Tom Antlfinger
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Default RE: BVM F-4 CG

Hi Craig:

I always wondered why BV chose to use a distance along the leading edge on the F-4 and that little hole near the leading edge on the F-100D/F. With a swept wing, if you extend the C.G. point with a perpendicular line from the C.G at the root, out to the absolute front of the leading edge, you will get one measurement vs if you measure along that same perpendicular 1.5" more aft like the holes on the F-100. Why not do the measurement at the root like he does for most of his other models?

I notice on my Phantom that a perpendicular from the C.G. at the root measured about 1" back from the leading edge passes thru both the 12 3/4 point, as well as thru the center of the box at the front of the leading edge, if that makes any sense.

So when you do your C.G, how do you suspend the model.......right along the leading edge with a device like Tom Cook uses on the Firebird, or with your finger or some some sort of rocker device and inch or so back from the front of the leading edge?

Tom