Date:         Sat, 23 Oct 2004 18:05:47 -0700
Reply-To:     Robert Fisher <refisher@MCHSI.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Fisher <refisher@MCHSI.COM>
Subject:      Re: noise reduction
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
              reply-type=original

You're lucky it was only yer daughter... could you imagine if you got pulled
over during that experiment? You probably would've told the cop the honest
truth and that'd been the end of ya right then and there... : )

Cya,
Robert

----- Original Message -----
From: "jimt" <wetwesty@TACTICAL-BUS.INFO>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, October 23, 2004 4:59 PM
Subject: Re: noise reduction


For strange leaks one time I had my daughter thinking I was real strange.
While I was driving down the highway she held a burning incense stick up
near different areas of the van.  I was trying to find the source of a cold
draft hitting me on the back of my head in the drivers seat.  The little
smoke stream told me it was actually the seal on the passenger door.  Last
place I expected. There was a very large gap on the front upper corner of
the door.  The air was actually swirling around to get me in the back of the
head.  I was expecting something with rear seals or windows.

jimt


On 10/23/04 4:49 PM, "Robert Cardo" <rrecardo@WEBTV.NET> wrote:

> Reihard,
> I don't know how you will do road noise testing without trying to pad
> the underside of your Van from the source of the noise.
> Your sitting right on top of the major offensive area.
> The tires spinning on the road's surface.
> The other is the back back side of the Van ( engine, exhaust, tires in
> the wheel wells.)
> The only proven to work method is dampening the sound with a harmonic,
> noise absorbing material, on the top side of the sheet metal, as well as
> the bottom side.
> The simple to explain way to get this job done is the more padding in
> problem area's, the quieter the ride.
> I have a friend up in Canada who own's and drives a truck.
> He, when the truck was new had the mfg. add the optional winter
> insulation kit to the cab of the truck.
> On the bottom of the cab floor is glued black, dense, foam rubber.
> Under the rugs is more foam rubber of a different density.
> Inside the doors is more insulation.
> Inside the interior panels is more.
> This tractor is like riding in a Rolls Royce.
> It's not only drum tight, but almost an ere quiet.
> I would suggest to you rather than taking all the time with your DB
> meter poking around inside the Van as your driving down the highway
> trying to locate the source of the problem, insulate the interior and
> the bottom side from the obvious road,& tire noise and your search would
> be over.
> Also, you might consider replacing the old, shrunk, door and rear hatch
> gaskets.
> You might think they are making contact to the body just fine, but old
> rubber does shrink and will allow air to bypass them.
> Have you changed them prior to your DB meter tests?
> You should .
> It will make a big difference.
>
> RC
>
>

........................................
jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
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