Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Ford Sierra XR4i Bi-Wing Spoiler?

JacobLeSann · 03-20-2021, 11:00 AM

Hey all, do any of you have info/explanations of the aerodynamics behind the Bi-wing spoiler on the Ford Sierra/Probe III concept. I’ve read that it reduces drag, but I’ve also heard that it’s a measure for creating downforce. I’ve not found a concrete answer yet.

03-20-2021, 11:00 AM	#1 (permalink)
JacobLeSann Master EcoModder Join Date: Nov 2020 Location: The Pas, Manitoba Posts: 319 Thanks: 427 Thanked 145 Times in 112 Posts	Ford Sierra XR4i Bi-Wing Spoiler? Hey all, do any of you have info/explanations of the aerodynamics behind the Bi-wing spoiler on the Ford Sierra/Probe III concept. I’ve read that it reduces drag, but I’ve also heard that it’s a measure for creating downforce. I’ve not found a concrete answer yet.