R60 Buffeting with driver's window open
#1
Buffeting with driver's window open
Noticed on my drive home from Portland yesterday that having just the driver's side window open at higher speeds caused some pretty serious buffeting. Any one else experiencing this? I guess that I will just have to crack an opposing window, but I would have thought that would have been something they tested in the initial design.
#4
No kidding? How fast are you going when you hear buffeting? With one window down this happens in my other cars but once I open at least one more window it goes away.
#7
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#9
Noticed on my drive home from Portland yesterday that having just the driver's side window open at higher speeds caused some pretty serious buffeting. Any one else experiencing this? I guess that I will just have to crack an opposing window, but I would have thought that would have been something they tested in the initial design.
#10
This was my thought too. The Car Talk guys had to explain it to someone once, and their explanation sounds a lot like the one Vollgas just gave.
#11
Yep pretty much every car that I've owned or ridden in does this with one window down. I think someone said it did it in their CM with more than one window down. Which is odd because putting another window down usually fixes the problem.
#12
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With 1 window open, the air is trapped inside the vehicle. The air is trying to escape out the open window while more air is coming in. When a second window is opened, the air pressure is released because of the 2nd window being opened.
If you want to see the air flow around your car it is very easy to do. Cut about 40 pieces of yarn 4" long. Tape the yarn at various locations arond the front hood, windshield, and door panels. Go take a short drive. When the yarn is laying flat at speed, it shows that the air flow is smooth. If the yarn is flapping, that means there is a disruption of the air flow. Not many people are inclined to do this. When you work on race cars with a low budget, you learn to make your own wind tunnel.
If you want to see the air flow around your car it is very easy to do. Cut about 40 pieces of yarn 4" long. Tape the yarn at various locations arond the front hood, windshield, and door panels. Go take a short drive. When the yarn is laying flat at speed, it shows that the air flow is smooth. If the yarn is flapping, that means there is a disruption of the air flow. Not many people are inclined to do this. When you work on race cars with a low budget, you learn to make your own wind tunnel.
#16
I should have been more specific about my issue, when i roll a window down, or all windows down, there is some sort of rat a tat tat, or knocking sound that's really loud, I can't pin down where it's coming from, other than the back seat area. Went away for a couple of weeks, happened a few days ago, then disappeared this weekend.....
#18
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