I made this venturi by drilling a piece of aluminum and flaring the top, I'm sure it's been debated here but will a straight through venturi work for stunt?

I made this venturi by drilling a piece of aluminum and flaring the top, I'm sure it's been debated here but will a straight through venturi work for stunt?

   Almost certainly. The classic venturi shape from a textbook (which Randy calls a "true" venturi) is not required to function, particularly in stunt, where flow loss from inefficient shapes is essentially unimportant, and reliable atomization and consistent flow is critical.

   You might get slightly less power for a given amount of fuel draw, but that probably doesn't matter, as long as we are running them far below peak anyway.
 
    Brett