My ERA's re-creation is also wing shaped and it's fixed in position. Seems the exact purpose and effectiveness of the originals has been debated forever. They don't seem to have any effect on engine cooling I'm told. Having an airplane wing in the nose would not seem to be the thing for ground hugging aerodynamics. Since the Street Roadsters were not intended to have an
oil cooler maybe it was thought to help direct the air from that lower opening back towards the radiator instead of it moving up along the line of the radiator slope or something. However the area of the
oil cooler is blocked off by a panel on my car - not sure about the originals.
