Jerry Cochran
Well Known Member
Anyone here have opinion on effect of exhaust stack length on power and/or aerodynamics of stacks hanging out in the airstream? I have standard Vetterman stacks and stock they extend from the bottom of cowling about 9". Anyone shorten them up with positive results?
Seems to me I saw some research someplace re this, but searches come up no joy. Just seems like they would be draggy. Ideas? Advice? Theory?
Jerry Cochran
RV-6a Phase One
Seems to me I saw some research someplace re this, but searches come up no joy. Just seems like they would be draggy. Ideas? Advice? Theory?
Jerry Cochran
RV-6a Phase One