Originally Posted by scunna
No mods to ducting. fan is suspended where it is supposed to be. I think the awesome sound comes from the fact that the plane is designed to run 90mm fan so the 70mm fan has lots of free air( not starved)
I wonder if the exhaust pipe of the stock 90mm mirage way too big for 70mm fan?
much bigger than 100% FSA of the 10 blade 70mm fan