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 > Upgrades to make my generator quieter

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deltabravo

Spokane, WA

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Posted: 02/21/22 07:34am Link  |  Quote  |  Print  |  Notify Moderator

Early last summer I installed the new Cummins Onan 2500i inverter generator in my AF 992. Later in the summer I added the Cummins Onan resonator

I did some sound comparisons with and without the resonator in this video

Without the resonator, If you are standing off to the side, at a 90 degree angle to the exhaust, you don't really hear the sputtering as much as you do if you are anywhere less than 90 degrees, and closer to the exhaust.

What I noticed after watching other videos on the resonator is that it makes an even bigger difference in noise reduction on the non inverter generator - the sputtering those make is pretty obnoxious.
If you have space to install the resonator and use your onboard genny a lot, it's a worthwhile upgrade.

Even without the resonator, the new inverter style gen is quieter than the generator I removed, as compared in this video sound test old vs new

My intention was to install the new gen in a TT I had, but I abruptly decided to sell the TT. I had already purchased the new gen, so I needed to put it to use. I decided to install it in the 992.

Before I installed the new gen, I installed some sound deadening mat in the gen compartment. Someone in the AF truck camper group recommended it.
Here's a short video describing that project: sound deadening mat in gen compartment

* This post was last edited 02/28/22 07:00am by deltabravo *   View edit history


2009 Silverado 3500HD Dually, D/A, CCLB 4x4 (bought new 8/30/09)
2018 Arctic Fox 992 with an Onan 2500i "quiet" model generator

Lwiddis

Near Mammoth, California

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Posted: 02/21/22 07:44am Link  |  Quote  |  Print  |  Notify Moderator

Very interesting report and videos.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AMP Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


dave17352

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Posted: 02/21/22 03:03pm Link  |  Quote  |  Print  |  Notify Moderator

I wrapped my microlite with mineral wool insulation Of course leaving all areas where the air flows and exhaust areas. This made my generator on my class c incredibly quiet. Mineral wool does not burn until over 2000 degrees and does not mold or absorb water. Pack a little around your generator I think you would be pleasently suprised.


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jimh406

Western MT

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Posted: 02/21/22 05:14pm Link  |  Quote  |  Print  |  Notify Moderator

I'm glad you found a solution, but if I ran for an extended period of time, I'd buy a Honda. That being said, I don't have an issue at all with running my 16 year old Onan for 30min - 1 hr to top off my batteries.


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deltabravo

Spokane, WA

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Posted: 02/22/22 06:01pm Link  |  Quote  |  Print  |  Notify Moderator

jimh406 wrote:

but if I ran for an extended period of time, I'd buy a Honda.


I did that too: Honda EU2200i w/ Bluetooth

mkirsch

Rochester, NY

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Posted: 02/23/22 06:51am Link  |  Quote  |  Print  |  Notify Moderator

I'm glad this is a "telling how" and not an "asking how" thread.


Putting 10-ply tires on half ton trucks since aught-four.

time2roll

Southern California

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Posted: 02/23/22 08:00am Link  |  Quote  |  Print  |  Notify Moderator

Has anything been done to reduce generator run time?


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HMS Beagle

Napa, California

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Posted: 02/23/22 09:37am Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

Has anything been done to reduce generator run time?

Solar. I don't have a genset and haven't plugged the camper in to the wall in several years.


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trail-explorer

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Posted: 02/23/22 11:04am Link  |  Quote  |  Print  |  Notify Moderator

HMS Beagle wrote:

time2roll wrote:

Has anything been done to reduce generator run time?

Solar. I don't have a genset and haven't plugged the camper in to the wall in several years.

I reckon that question was directed at the OP....


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deltabravo

Spokane, WA

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Posted: 02/23/22 06:03pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

Has anything been done to reduce generator run time?


Yes, several things:

Last winter I installed a Pair of Battleborns. They charge faster than the original batteries.

I also installed 4 AWG cables between truck and camper back in 2010.

The last thing I did was install a Victron DC to DC Charger to compliment the heavy cables I added.

With this setup I can easily get 22 amps when driving. That's the most I've seen so far because all of my trips were short last year. The driving was done when the batteries were pretty well charged when I started the 4 hour trip there or back home.

* This post was edited 02/23/22 06:13pm by deltabravo *

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