Re: Serious - Saab 900 Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
4/9 Saab Owners' Convention Day Pass Raffle |
3/26 M Car Covers (by State of Nine)
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
Well, with the engine spinning at 2500 rpm, you can see the hose vibrating like a guitar string. Could probably work out its natural frequency. Maybe it's around the 40 Hz the engine is running at, so you get a resonance.
I believe the issues you point out should also show up at different engine speeds, but the engine is absolutely smooth across the range, it's just the hose vibrating at 2500 rpm. I guess the way is to try and better secure it without holding it so tight that the engine grabs it horizontally and pulls it out of the evaporator. Shortening the effective vibration length will increase its natural frequency quite a bit.
posted by 108.88.22...
Posts in this Thread:
- annoying rattle-vibration and noise at 2500 rpm, ryan , Thu, 25 Aug 2016 02:07:35
- Why NOT run to 2500 and look, Bloodnose , Thu, 25 Aug 2016 05:54:22
- Re: Why NOT run to 2500 and look, ryan , Thu, 25 Aug 2016 12:10:37
- If it were me...., Notnoel , Thu, 25 Aug 2016 13:43:46
- hahah, ryan , Thu, 25 Aug 2016 13:56:50
- Re: zip tie it, turbocon86, Fri, 26 Aug 2016 09:31:17
- Rip the evaporator out first - then the hose won't rip it out. Y, vsfoxe , Thu, 25 Aug 2016 14:25:19
- Re: Rip the evaporator out first - then the hose won't rip it out. Y, StoicBlue87 , Thu, 25 Aug 2016 14:54:41
- If not serious..., Bloodnose , Thu, 25 Aug 2016 15:43:04
- you can feel the vibration in your foot, ryan , Thu, 25 Aug 2016 16:16:11
- Serious, Bloodnose , Thu, 25 Aug 2016 16:21:28
- Re: Serious, ryan , Thu, 25 Aug 2016 17:02:21
- Re: Serious, Bloodnose , Thu, 25 Aug 2016 17:26:41
- Re: Serious, ryan , Fri, 26 Aug 2016 08:41:49 <-- Viewing This Message
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
|
SaabClub.com
|
Jak Stoll Performance
|
M Car Covers
|
Ad Available
|
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!