Aero Covers

[Berkshire1]

Can someone explain how Aero Covers can improve aerodynamics if the covers spin in opposite directions on both sides of car? In other words, gray leads silver on one side and silver leads gray on the other side.

 

[jcanoe]

The part number for the 19 Inch Gemini Cap, 1044235-00-B, states a quantity of 4. The Gemini caps are not sided, left/right.

On My Model Y the silver spoke leads the dark gray on the passenger side; the dark gray spoke leads the silver spoke on the driver's side.

Maybe it does not matter which spoke leads.

 

[Zoomit]

The primary mechanism, for the increased efficiency from the Gemini caps, is the high pressure air within the wheel well gets blocked from escaping through the wheel. When the air passes through the wheel spokes it causes drag on the wheels turning. This is independent of the air passing outside the wheel.

The secondary cause for the increased efficiency is a smooth surface for air going around the wheel on the outside. The differences in optimal flow, due to the same cap being used on both sides of the car, is inconsequential and not worth the logistics and usage pain of having directional caps or wheels. Note that most Tesla wheel designs appear to have a "correct" direction but in reality are used on both sides of the car. Tesla makes no directional wheels or caps.

 

[Berkshire1]

Thanks for info..appreciate quick responses

 

[captanzuelo]

The dark grey leading on the left side creates more drag than the right side. Thats why most of our Y's have a tendency to drift left at higher speeds.


...I kid. Actually, never even crossed my mind that aero covers were omni-directional.

 

[The Great Al]

The dark grey leading on the left side creates more drag than the right side. Thats why most of our Y's have a tendency to drift left at higher speeds.


...I kid. Actually, never even crossed my mind that aero covers were omni-directional.