I hate it when i write things on a scrap of paper and then cant decipher it......
Anyway for the extreme values which work for the whole temperature envelope.
747-400 = 2133m T/O Wt = 340k
747-200 = 2072m T/O Wt = 312k
757-200 = 990m T/O Wt = 71.5k
777-200 = 1550m T/O Wt = 200k
I didnt have a chance to check the empty weight of a B757, however the others are giving quite a payload. Most appear to be VMCG limited.
Mutt.