Mutt, JT,
I have 2 models of the venerable DC-8 (-61 and -63), both with JT3-3B or -7 power. But, my post last night was from memory (and I should know better than that at my age). <g>
The AFM (which I now have open on my desk) shows no change of Vmcg with weight, but there is approx. 4 knots difference in Vmca for each 60,000 lbs. change in weight.
Mutt - I'm still doing test flights, 3 engine ferries and my Designated Examiner flying. They keep throwing money at me, so I don't know when I'll retire. Life is good. Norm