In article ,
Mxsmanic wrote:

Neil Gould writes:

The calculations are simple math. Why would you need a pointer to anything
but an elementary math book?

I'm sure the calculations are simple, but I still need an explanation
of which calculations to perform.


All W & B calculations result from taking the sum of all moments and
dividing by the sum of the associated weights.

Sum (arm*weight) / sum (weight) = CG

The arms are referenced to the datum -- an arbitrary point -- sometimes
the LE of the wing, sometimes a point ahead of the nose; but nonetheless
it is THE reference point for a given aircraft.

The POH will list the arms for each seat, fuel, oil, baggage, etc.