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Date:         Sun, 21 Oct 2012 11:10:51 -0400
Reply-To:     Kim Brennan <kimbrennan@MAC.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Kim Brennan <kimbrennan@MAC.COM>
Subject:      Re: Soundproofing '85 Westy
Comments: To: Karl Wolz <wolzphoto@Q.COM>
In-Reply-To:  <2C36DB1C-A9B1-41F8-A69E-73120EDCEE56@q.com>
Content-type: text/plain; CHARSET=US-ASCII

tire noise goes out in all directions.

I also drive a Chevy Volt (aka electric car with no engine/tranmisssion noise). ALL its driving noise is due to tires. In my SVX equipped Vanagons, the engines are very very quiet at or near idle. The van gets noticbly noisier as you drive down the road (even if the van is not in gear). The tires and wind are the reason, but the tires predominate until you get above 45 mph.

On Oct 21, 2012, at 12:10 AM, Karl Wolz wrote:

> I don't think the tire noise travels vertically through the wheel wells, but rather, through the suspension, and to the large sounding box we call a body. I'm hoping someone can kinda verify my suspicions on that. > > Karl Wolz > Sent from my electronic umbilicus > > On Oct 20, 2012, at 8:18 PM, MICHAEL H <vwdash80@YAHOO.COM> wrote: > >> ... good point, Kim. I can barely hear the tranny whir for tire howl on certain surfaces ... =(: D) mike >> >> >> >> >> ________________________________ >> From: Kim Brennan <kimbrennan@MAC.COM> >> To: vanagon@GERRY.VANAGON.COM >> Sent: Saturday, October 20, 2012 9:55 PM >> Subject: Re: Soundproofing '85 Westy >> >> Road noise is caused by the tires on the pavement. To reduce that you'd need to add sound insulation in the wheelwells. Since you are sitting on top of the tires, its actually more difficult that at first it would seem. >> >> While the area immediately under the seat can easily have more insulation added, the area to the sides of the seat are not as accomodating (and you've only got 1/8" of metal between you and the outside world there. If your cabin has carpeting, you can replace the carpet pad with something that absorbs sound better. But you still have the footwell to deal with and the step. >> >> Tires themselves can vary quite a bit in terms of noise. In fact, they have a rating for that now. >> >> >> On Oct 20, 2012, at 9:42 PM, Karl Wolz wrote: >> >>> Don't care much about the tinny clang; it's the road noise I'm trying to reduce. Hearing aids tend to amplify all the wrong sounds- like i almost can't drive with windows down any more. >>> >>> Karl Wolz >>> Sent from my electronic umbilicus >>> >>> On Oct 20, 2012, at 5:25 PM, MICHAEL H <vwdash80@YAHOO.COM> wrote: >>> >>>> Karl - 2 wks ago I put thermocoustic panels in my 85 GL . I used the 12x12 sheets from Eastwood. 3 sheets on the inner skin of the slider, 2 sheets in each front door, 2 in the nose passenger side and 3 in the section behind the driver. I'll get another pkg of 5 for the firewall under the rear seat in the spring when engine heat won'be as welcome. the stuff cuts easily and forms like water on glass. be sure of placement as it REALLY adheres well. about 3 hrs total putzing around and no more cheap, tinny echo when the doors are closed. less road noise:lower stereo level: more enjoyment ! =(:D) mike >>>> >>>> >>>> >>>> >>>> ________________________________ >>>> From: Karl Wolz <wolzphoto@Q.COM> >>>> To: vanagon@GERRY.VANAGON.COM >>>> Sent: Saturday, October 20, 2012 7:32 PM >>>> Subject: Soundproofing '85 Westy >>>> >>>> Seems to me the van is fairly quiet (keep in mind that I'm pretty deaf) till I get up to Seattle on I-5, which has suffered a lot of erosion from their inclement weather. I've also noticed noise from expansion joints on concrete roads. >>>> >>>> Where do indeed to add sound deadening (and what type/brand) material to limit the noise transmitted to the body by the suspension? Is the entire body simply acting as a sounding board? >>>> >>>> Karl Wolz >>>> Sent from my electronic umbilicus


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