Getting ready to install a Fantastic fan, advice? - Page 3

larrie · 10-26-2015, 03:37 PM

Nice looking install.

arctictraveller · 10-26-2015, 11:44 PM

Thanks, I was worried for a minute till I figured the trim could cover my screw up. It would have been hard to explain to Mrs AT

1der · 10-27-2015, 12:11 AM

re: wind noise - A fun experiment would be to come up with a strip attached to the front of the vent to break up the vortices (Vortex Shedding) which are what makes the noise.

I wrapped my leading Thule rack bar with rope and it made the bar nearly silent. If you look at the newer cars with sunroofs, the high end ones have pop up deflectors with notches to make them quieter. Try it, it you may be pleasantly surprised.

Thread with pictures:
viewtopic.php?f=24&t=13667&hilit=thule+wind

arctictraveller · 10-27-2015, 09:42 AM

[quote="1der"]re: wind noise - A fun experiment would be to come up with a strip attached to the front of the vent to break up the vortices (Vortex Shedding) which are what makes the noise.

I'm happy to report, wind noise is not an issue. Yesterday, I did some freeway speed driving and completely forgot to notice how much noise it made. I think that's because it was quiet. It's far enough back from the windshield that I think it's out of most of the wind. When I install the rack in front of it, I'll try your method of breaking up the air flow, and report back. Thanks.

rallypanam · 10-27-2015, 09:55 AM

Looks good!

Viva · 10-27-2015, 01:14 PM

That's a good point. At one point (on a car) I had the Yakima round bar roof racks. Oh my, did they howl. Yakima came up with an add on to fix it and I bought one, and it did fix it. It was a little piece of flexible plastic extrusion about 3" long in a teardrop shape that you cllipped onto the rack. I'm sure they were made in a long section and just cut into "slices" to sell. But anyway, it didn't take much in that case.