Those tanks that Tony is flying -are like other research vehicles my friend Dave Stuart flies .
I bet Tony doesn't see these clunkers as fun flyers.

The take off roll is from horizon to horizon.
they are simply military mules
The original question was regarding a model which has a wing planform of roughly 3.5" by 29".
3-4 ozs wing loading is a decent range-for a sport model of that configuration.
Boys - how many of you have built one that size?
They are fun but amazingly enough -you can easily detect the flying difference in weight changes of less than one ounce!