<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Gaucho100K:
There is obviously a limit on how much you can stretch these birds... Im assuming that the 747 fuselage is pretty much near its limit... if this were not the case, Boeing could have just added length to the 744 and killed the A380, or...?</font>
The limit must be how much lift the wing can generate.
The basic 747 (-100, -200, -300 and -4000 has never been stretched from the -100's 70.6M length, just shortened (SP). The only "lengthening" has been extending the upper deck backward.