Calling V1 early

[SMOC]

I've got a lovely chart based on the 747, HVY weight, balanced field, dry, no reverse which shows that if you decide to abort at 1kt over V1 you will go off the end of the runway at 20kts and 4kts over V1, it's up to 60kts.

Now if you 'GO' at 20kts below V1 you will cross the end of the runway @ 15', 10kts below 20', 5kts below 25' and @V1 as you'd expect 35'.

So if you ask me the benifits of going early are obvious.
(1kt < V1 = 34' and 1kt > V1 = 20kts off the end).

I'll try and get a hold of a twin graph.

EDIT: Just to clarify a few things,
I'm certainly not saying call V1 early, or "GO" anywhere near VMCG or fly an unflyable A/C.
It just shows you don't have to be stop minded below V1. Come back and use the full length.