Quid
I know my statement about v2= 1.2 Vs is not always 100% correct and I have stated in my answer that factors like Vmca,Vmcg, Vmbe etc play a role as well.
I just wanted to keep things simple and concentrated on the original question from av8r76 “How does weight influence V1”.
Once that is sorted out you can go into details.
As far as the spread between Vr and V1 is concerned and the influence of density altitude, I think I addressed that issue in my answer.
If you want to go into details too early while answering the original question the guy is going to get lost.
The way we calculate out RTOW charts is company secret and we exist for over 80 years now so we are one of the oldest Airlines on the globe.
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Smooth Trimmer