Oh, but let's not forget that balsa has the highest strength to
weight ratio than almost any other hardwood, and higher than
most or all softwoods too, making it an excellent choice for
many aviation applications.

True. But still, even if SH quadrupled or octupled up on the weedwhacker
motors to increase the payload capacity, they still wouldn't cut it for
transatlantic bombing runs. Not to mention the hobby-class radio remote
controls only have an effective range of just a few thousand feet.

I have read that blue catalpa actually has a higher strength to
weight ratio. Might prove useful as due to its extreme low
density balsa components of adequate strength may prove to
be excessivley bulky for such things as wing spars.

A few extra wraps of gaffers tape does wonders for strength to weight
ratios.