min V1 = 110 kts (this must be VMCG), Vr 113, V2 120. So why can't I be airborne at VMCG?
I'm presuming that the speed sequence above is that for min weight min speed ? .. in which case you really want to be airborne below Vr and V2 ?
On approach; the VAPP minimum VMCA can be lower than VMCG.
and the two are of no relevance to each other ?
Is this where the confusion comes from?
I think that the only confusion is wanting to come up with some correlation between Vmcg and Vmca when there is no valid reason to do so ? .. apples and oranges ..