JAJ
I just don't like to see opinions that are based on "hoop"...that's all. On the hot weather stuff, I can remember getting airborne with 1200kgs of missiles, a gun load and the 1500L tanks at PSAB at ISA+20 in about 7000ft. If we'd left the tanks empty and gone with half fuel to rendezvous with a tanker up to 30mins away (about the safe range at 1/2 fuel) then I would hazard that we could make a 4-5000ft take off run.
You're right about the exact figures but estimates are hardly classified - you could watch us from the spotters car park and get a good idea from the runway distance to go markers!
BTW I'm not saying that the GR9 was a bad aircraft, it's just that GR4 has more "clubs in the golf bag".
LJ