To Beech19
You asked "Another is the question "how does VMCA/G vary with C.G. position" is VMCG not based on the rudder and main gear? or is it affected by C.G. the same wat VMCA is".
The calculated VMCA/G that you read off the charts doesn't change - it's been calculated on the worse case condition, i.e. an aft CG. This is because the moment arm between the CG and rudder is at its shortest and is at its weakest in terms of having a "center of pressure" that controls the the Yaw in an engine out situation. So, the real answer is that VMCA/G goes down with a forward CG - based on the one condition thats been chosen, i.e. some of the others can be calculated and some can't and they are put in the various charts. Things like most critical engine, windmilling and/or feathered props are also assumed when applicable. Density altitude is calculated into the various charts for the obvious reasons. Any questions?
RP