Generators and Motors
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Vintage Electrical Equipment > Generators & Electric Motors General Discussion > Onan Generators
Forgot Password? Join Us!

Notices

Onan Generators Restoring, operating and maintaining vintage Onan generators.

Onan Generators

how quiet is your onan?


this thread has 21 replies and has been viewed 1907 times

Reply
 
Thread Tools Display Modes
  #1  
Old 10-02-2015, 02:46:40 PM
Tracy T Tracy T is offline
Subscriber
 
Join Date: May 2009
Location: Cedarbluff, Virginia, USA
Posts: 1,524
Thanks: 442
Thanked 579 Times in 356 Posts
Thumbs up how quiet is your onan?

I finally got my jc's exhaust routed and I must say I am impressed! Dang the fridge makes more noise! I am sitting in my living room no more than 20 ft away and all I here is a steady purr.
Reply With Quote
Sponsored Links
  #2  
Old 10-02-2015, 03:02:35 PM
BRae's Avatar
BRae BRae is offline
Sponsor
 
Join Date: Oct 2013
Location: Escanaba, Michigan
Posts: 681
Thanks: 292
Thanked 397 Times in 226 Posts
Default Re: how quiet is your onan?

My JB is in a detatched garage about 8ft. from my bedroom side of the house Its 16X24. The silencer is inside the garage, an extra thread on muffler outside on the exhaust. It is barely noticeable in the bedrooms. Other parts of the house it is not noticeable at all. Outside. Anymore than 20-25 feet away its very difficult to hear.

---------- Post added at 03:02 PM ---------- Previous post was at 03:00 PM ----------

I think my new phone has an app for decibel readings. will have to get it out there and take some readings.
Reply With Quote
  #3  
Old 10-02-2015, 07:14:23 PM
Aknovaman Aknovaman is offline
Registered
 
Join Date: Sep 2015
Location: Tecumseh, Kansas
Posts: 30
Thanks: 1
Thanked 2 Times in 2 Posts
Cool Re: how quiet is your onan?

Mine is pretty quiet even in concrete driveway.

https://youtu.be/q2lVNJkbQs0
Reply With Quote
  #4  
Old 10-02-2015, 08:31:56 PM
Radarman Radarman is offline
Subscriber
 
Join Date: Aug 2014
Location: Beaverton, Oregon
Posts: 298
Thanks: 70
Thanked 127 Times in 79 Posts
Default Re: how quiet is your onan?

With the little stubby muffler that came with my JB it's pretty loud. I wear ear protection when I am running it.

I plan on getting a large auto muffler for my JC. That should be much quieter than the JB.
Reply With Quote
  #5  
Old 10-02-2015, 09:13:55 PM
YellowLister YellowLister is offline
Registered-III
 
Join Date: Feb 2010
Location: Key Largo, Florida
Posts: 4,224
Thanks: 2,174
Thanked 2,140 Times in 1,372 Posts
Default Re: how quiet is your onan?

My 2,5 lk w/ nelson muffler is slightly noisier than a 2000 watt honda inverter gen.. ran one next to it for comparison.. was very impressed.. just engine noise is all u hear.. my 4.0 cck with original muffler that came out of a airstream trailer makes more noise but still pretty quiet.. my other onans with nelson mufflers make more noise.. id say my nh is 3rd.. than the bfas .. I wish I could make the jbs quieter ut its mostly air moving that u hear.
Reply With Quote
  #6  
Old 10-02-2015, 09:37:37 PM
JohnnyC JohnnyC is offline
Subscriber
 
Join Date: Jun 2014
Location: Boonton, New Jersey
Posts: 4,940
Thanks: 1,730
Thanked 2,479 Times in 1,428 Posts
Default Re: how quiet is your onan?

My 15.0JC has an automotive cherry bomb for a muffler a.k.a. glass pack muffler. If these gensets were not fixed for 1800 rpms, my JC would probably be a good contestant in a muffler rapping contest. Actually, the noise is not too bad, but not the most quiet either. It sounds like a forklift on steroids.

JohnnyC
New Jersey
Reply With Quote
  #7  
Old 10-03-2015, 12:51:32 AM
richard.bessey richard.bessey is offline
Registered-III
 
Join Date: Jan 2008
Location: Walla Walla, WA
Posts: 563
Thanks: 70
Thanked 131 Times in 104 Posts
Default Re: how quiet is your onan?

With my Onan CCK, running 1000 watt load, 72 db at 23 feet away. Yes I have a sound meter and have compared various pieces of lawn equipment. The onan is one of the quietest.
Reply With Quote
  #8  
Old 10-04-2015, 01:50:40 AM
Jim Marcozzi Jim Marcozzi is offline
Registered-II
 
Join Date: Nov 2013
Location: Hempfield, PA, USA
Posts: 527
Thanks: 58
Thanked 306 Times in 163 Posts
Default Re: how quiet is your onan?

MY 12.5 JC whispers. I have a Nelson muffler and the outlet goes downward and exits parallel to the ground about 6" above ground level. The genset is enclosed in a home made housing that's lined with 4" pink fiberglass insulation for noise control.

Can't hear it run from the house.
Reply With Quote
  #9  
Old 10-04-2015, 02:53:41 AM
Motorhead's Avatar
Motorhead Motorhead is offline
Subscriber
 
Join Date: May 2007
Location: Central Coast, California
Posts: 3,886
Thanks: 1,822
Thanked 2,689 Times in 1,394 Posts
Default Re: how quiet is your onan?

The enclosed 7.5JB I bought came from Onan with a Nelson Critical muffler on it. It's super quiet.
My 5kw CCK is pretty quiet even with 30 amps of load.
Reply With Quote
  #10  
Old 10-04-2015, 11:13:37 AM
Onan Dan's Avatar
Onan Dan Onan Dan is offline
Subscriber
 
Join Date: Oct 2012
Location: Waynesburg, Pennsylvania
Posts: 3,807
Thanks: 8,587
Thanked 2,897 Times in 1,441 Posts
Default Re: how quiet is your onan?

How quiet you ask I can lay down beside my 7.5 JB and go to sleep really my garage is 60 feet from my bed room window and any onan I have is so mellow it sings me to sleep other than that CCKB 10.0 3600 rpm now it is not quiet of course it is just a conversation piece I run my onans on the Summit oval or flat mufflers and they are nice the mechanical works on the motor in the garage is noisier than the exhaust out side.
Summit racing equipment Walker universal sound FX muffler 17903 1.5 inlet-- 1.5 outlet $24.95 plus shipping
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Onan 12.5 Quiet Richard M Onan Generators 6 02-05-2013 10:54:24 AM
Onan 12.5 Quiet Diesel Richard M Onan Generators 2 02-03-2013 06:41:01 PM
Quiet Onan models? threejeeps Onan Generators 17 08-31-2012 12:11:07 AM
Onan 4.0 Micro Quiet slper Onan Generators 6 10-27-2010 11:48:59 AM
Onan Micro Quiet Won't Run - Help!!! 2bearsinor Onan Generators 2 08-16-2008 04:20:10 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 09:16:02 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277