| Author |
Message |
outcaststudios
Samba Member
Joined: February 09, 2015
Posts: 1732
Location: Maine
|
 Posted: Mon May 06, 2019 2:16 pm Post subject: strange woodwind like hum from front end? |
 |
|
about a month ago i worked on the headlights. removed front grill etc.i noticed a few weeks ago, a low hum emanating from the front end, but only when i go over 40kph, it stays the same until i decelerate again. its acoustic quality is like the sounf of blowing over a bottle. its faint and obviously wind passing over something but what could this be from? i tried opening and closing the fresh air flaps, no change.
_________________
'88Doka JX td
'69 westy
(rip)couple bugs
(rip)three type III"s
(rip) '81 vanagon
a bunch of french stuff,and 9 motorcycles.
https://www.thesamba.com/vw/classifieds/detail.php?id=2573791 |
|
| Back to top |
|
 |
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32592
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
outcaststudios
Samba Member
Joined: February 09, 2015
Posts: 1732
Location: Maine
|
| Posted: Mon May 06, 2019 2:18 pm Post subject: Re: strange woodwind like hum from front end? |
|
|
nice thanks dave! ill check it out ,that sounds promising. i did just add a roof rack 
_________________
'88Doka JX td
'69 westy
(rip)couple bugs
(rip)three type III"s
(rip) '81 vanagon
a bunch of french stuff,and 9 motorcycles.
https://www.thesamba.com/vw/classifieds/detail.php?id=2573791 |
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32592
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
kamzcab86
Samba Moderator
Joined: July 26, 2008
Posts: 7917
Location: Arizona
|
| Posted: Mon May 06, 2019 2:25 pm Post subject: Re: strange woodwind like hum from front end? |
|
|
| outcaststudios wrote: |
noticed a few weeks ago, a low hum emanating from the front end, but only when i go over 40kph, it stays the same until i decelerate again. its acoustic quality is like the sounf of blowing over a bottle...
i did just add a roof rack |
My Jetta did that... until I added a fairing to the front Yakima crossbar.
_________________
~Kamz 
1986 Cabriolet: www.Cabby-Info.com
 1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子 |
|
| Back to top |
|
|
outcaststudios
Samba Member
Joined: February 09, 2015
Posts: 1732
Location: Maine
|
| Posted: Mon May 06, 2019 3:48 pm Post subject: Re: strange woodwind like hum from front end? |
|
|
if thats the case im stoked to make a cool front fairing for it!
_________________
'88Doka JX td
'69 westy
(rip)couple bugs
(rip)three type III"s
(rip) '81 vanagon
a bunch of french stuff,and 9 motorcycles.
https://www.thesamba.com/vw/classifieds/detail.php?id=2573791 |
|
| Back to top |
|
|
jimf909 
Samba Member
Joined: April 03, 2014
Posts: 7466
Location: WA/ID
|
| Posted: Mon May 06, 2019 5:43 pm Post subject: Re: strange woodwind like hum from front end? |
|
|
I recall the A-pillars being open to the ground and causing this hum. There's a sponge like material in some vans (later years) that was supposed to eliminate this hum.
An old post...
| ragnarhairybreeks wrote: |
I haven't tried what is shown in this German link, but it looks interesting - blocking A pillar opening at bottom, under van.
http://www.t3-infos.de/t3-infos_d.html#wgummis
specifically, "Windgeräuschpaket"
alistair |
https://www.thesamba.com/vw/forum/viewtopic.php?t=513616
_________________
- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
|
Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
|
| Back to top |
|
|
TheMonk
Samba Member
Joined: June 03, 2013
Posts: 85
Location: Sydney Australia
|
| Posted: Tue May 07, 2019 4:55 am Post subject: Re: strange woodwind like hum from front end? |
|
|
Yes I plugged my A pillars from underneath, road noise would apparently travel up like a church organ (as opposed to the woodwind section).
I think I read somewhere that the upmarket Caravelle's were plugged at the VW factory but lesser vans missed out. |
|
| Back to top |
|
|
Viva.Sabata
Samba Member
Joined: October 09, 2013
Posts: 170
Location: Alaska
|
| Posted: Wed May 08, 2019 10:44 pm Post subject: Re: strange woodwind like hum from front end? |
|
|
I think your van has become a pied piper of sorts. Have you noticed any animal or insect migrations in your mirrors?
_________________
Sabata
1987 Westy Full Camper, Peloquin 5-Speed 2wd |
|
| Back to top |
|
|
alaskadan
Samba Member
Joined: January 09, 2013
Posts: 1857
Location: anchor pt. alaska
|
| Posted: Thu May 09, 2019 7:39 am Post subject: Re: strange woodwind like hum from front end? |
|
|
| My bet is the roof rack too. I built a sweet full roof rack for my old 74 bay and it howled. It started out low and by the time i hit 35 to 40 it howled with pretty good resonance. People a block further up the road could hear me coming. A heat gun and some 1/8th inch acrylic to make a nice visor, problem solved. |
|
| Back to top |
|
|
dhaavers
Samba Member
Joined: March 19, 2010
Posts: 7756
Location: NE MN (tinyurl.com/dhaaverslocation)
|
| Posted: Thu May 09, 2019 7:06 pm Post subject: Re: strange woodwind like hum from front end? |
|
|
If it only happens above 120bpm, I'd say it's prolly just some air bleeding off your weidoeft resonator.
https://en.m.wikipedia.org/wiki/Rudy_Weidoeft
- Dave
_________________
86 White Wolfsburg Westy Weekender
"The WonderVan"
<EDITED TO PROTECT INNOCENT PIXELS> |
|
| Back to top |
|
|
|
