Responses..
Hand Solo : The Concorde was grossly over weight. The program is done and that's why.
Rjay: Your decision speeds are based on runway length and ability to clear obsticles. I can't speak for your ops, but if you burn up 9000 ft on a 10,000 ft runway to get to VR, something is rotten in Denmark
Ashling: Always nice to have surplus runway, and opens up the conversation for stopping an aircraft after a V1 go,...if on fire...ect...but that's another thread.
Screwballs: there isn't any point of view, you go or you don't. I didn't mention callouts at 1000ft left, but VR. Read the post.
737jock: If your in an airliner and need 9000ft of a 10000 ft runway to hit VR...something is wrong in Denmark...get a new calculator
ExCargo: If you got enough power, to use reduced power for the given runway...terrific...but again...I don't think you will be rotating at the last thousand feet of runway.
Soundbarrier: Nice job...you made my point for me....
D&M: "I'd never reject" .....wow.....you do this for a living?
Interesting thread...
SSG...over and out......