Model A Visor at high speed

Do you have a headliner in the car or is it unfinished inside? HRP

 

No headliner, and no plans to put one in. The wood inside has a nice clear finish on it, and I like the look.

 

I thought about Louvers in the visor to let the air pas thru vs holes. But then I think about a ladder rack I had put on one of my pickup trucks. I couldn't hardly stand the new wind noise and intermittent whistling that ladder rack would make. I cut my brand new ladder rack apart and added 2" under the cross bars to fix about 80% of the howling.

Anyone have louvers in their visor?

 

The reason I ask is a headliner stops the problem.

Have you thought about adding louvers? HRP

 

Bernoulli makes it do that

 

How would a headliner make a difference?
Louvers would probably be about the same as the holes for changing the airflow over the top.