4130 Steel is wonderful stuff...run thin wall, same strenght as DOM heavy wall less weight.

7500 Series aluminum alloys are awesome, same strength, same elongation, but massive price.


It all depends what you want to do and how much ya got!

Go crazy, do a Carbon fibre tub like an Indy car with titanium and aluminum mounting points.
Weight about the same as a popcorn fart, cost like a 3000 sq ft house with a view.

But it would be cool....

Zag

Weight about the same as a popcorn fart

   LOL  and how much does a popcorn fart weigh 

depends on if its buttered or not
                             
                          Ross

Weighs pretty much the same as a heavy beer belch....

With butter you have a little more weight but insignificant compared to the aerodynamic gains from being slippryer in the air.

Zag

That's the Zaggy answer I expected

A "Zaggy" answer....is that a good thing?

very technical but usually correct in analysis!!!!

What he said ^   

Technical?........Me?........Never

Zag

Glad ya liked the popcorn fart description.