I'm no physicist or anything, but it seems to me the turbulent air behind a Semi trailer is more akin to a large rock in the middle of a strong flowing stream.. As the water flows by the obstruction, there is a void formed behind it and the water fills that void and actually flows back upstream. Back in my younge foolish days when I would seek maximum gas mileage out of my VW loaf vans( first a 71 and late a 79), I would edge ever closer to the tail of the semi trailer until I was so close, that my van would actually be pulled closer to the trailer bumper without any additional coaxing from the throttle. didn't have to do that very many times to dig a little deeper for gas money!! I guess my point is that a Vortex is more conical and rotating whereas the water or air filling in behind the obstruction doesn't really develop a set flow pattern. The eddy(paddlers' name for the water behind the obstruction) water behind the rock rather curls back upstream ----- Original Message ----- From: "Mark Dorm" <mark_hb@HOTMAIL.COM> To: <vanagon@GERRY.VANAGON.COM> Sent: Friday, May 25, 2001 2:23 PM Subject: Agilis/Vortex//Bilsteins
> The strongest compliments for tires and not getting whipped by the wind have > come from agilis users, however I wonder what they have to say about being > (or not being) "buffeted in the vortex behind large trucks" > > > >From: Michael Townsend <townsend@rtp.ericsson.se> > >Reply-To: Michael Townsend <townsend@rtp.ericsson.se> > >To: vanagon@GERRY.VANAGON.COM > >Subject: Re: Any Bilstein users? > >Date: Wed, 23 May 2001 08:38:40 -0400 > > > >Hi, > > > >I have the Bilsteins with the BD Boge springs and MXT tires. I am very > >happy with the result. It is firm enough to be stable in crosswinds -- > >although I do get buffeted in the vortex behind large trucks. The ride is > >very comfortable, though. It is much softer than you would get with > >"sport" springs, and I don't do 45 mph exit ramps. I can't comment on the > >KYB's nor make $ value judgements, but I am happy with what I have. > > > >Michael > >90 Carat > > > >---------- > > > From: Stuart MacMillan <macmillan@home.com> > > > To: vanagon@GERRY.VANAGON.COM > > > Subject: Any Bilstein users? > > > Date: Tuesday, May 22, 2001 12:22 PM > > > > > > It's shock time. My KYBs have degenerated to point where I feel like > > > I'm piloting a boat on the freeway. But then they do have about 150,000 > > > miles on them. > > > > > > The Bilstein's are high pressure for both front and rear, while the KYB > > > uses a low pressure front shock. > > > > > > What are the opinions of the Bilstein users out there? Are they worth a > > > $210 premium over the KYBs, even with the lifetime warranty? > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com |
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