Making my onboard generator quieter

[deltabravo]

Here's a good project that reduced the sound output on my onboard generator. Part number is of the resonator is 155-2449. I had a local car exhaust shop do the welding.

Resonator sound comparison

[deltabravo]

StirCrazy wrote:
while the sound decrease is minimul, the tone of the sound is much better, but if you ran that beside me I would still complane. I think the best way to quite thoes down is to rip them out and use the space to store your honda 2200 😉

My EU2200 rides in my cargo trailer. The noise it makes compared to the onboard gen is very close to the same.

And yes, the tone is much better with the resonator installed. It eliminates the "sputtering" sound from the exhaust.

[trail-explorer]

jjrbus wrote:
Sleeping in an RV with a vacuum cleaner cooling it, powered by a lawn mower

There's no vacuum cleaner that cools an RV, nor is there a lawn mower powering anything.

[jjrbus]

Sleeping in an RV with a vacuum cleaner cooling it, powered by a lawn mower
underneath is not my idea of glamping. Been using a Honda 2000 forever and now have an LG 9500 dual inverter cooling my Roadtrek.

[StirCrazy]

while the sound decrease is minimul, the tone of the sound is much better, but if you ran that beside me I would still complane. I think the best way to quite thoes down is to rip them out and use the space to store your honda 2200 😉

I would be interested in seing the difference it makes, if any inside the camper.

[JoeH]

Sure seems to make the sound more acceptable.

[Lantley]

Granted its only a video, while the meter may have determined the resonator made a difference. I could not hear much of a difference listening to the video.
I found the difference to be minimal at best. Not enough to make a difference or change my camping scenario

[trail-explorer]

Nice upgrade, thanks for sharing.

[CharlesinGA]

So the Inverter model, despite running slower and having a completely different motor, has, under load, that same chugging or Poot-poot sound that my non inverter model has, and that resonator seems to have about the same effect on your inverter model as on my older non-inverter model.

I took my pipe to a one man muffler shop and he welded up some cracks in the 90 degree bend of the pipe caused by a broken hangar in the past, and he cut out a section and welded in the resonator.

I had bought the resonator to install on my 3600LP generator in a motorhome I had, but everyone who had tried it said it simply didn't have any noticeable change in sound so I never bothered to install it. After I got my trailer and realized the sound the smaller 2500LP made I tried it and that is what you see in my short video. That led me to install it and in that process I discovered cracks in the pipe at the 90 coming out of the motor from a broken hangar that had been repaired using inner tube or similar rubber that left a lot to be desired. As I also had the proper Cummins hanger, new, I bought with the resonator, I changed it out and fixed everything.

Charles

[deltabravo]

Fulltimers wrote:
The title of this post is deceiving.

It's not deceiving at all. Watch the video and you can see that the resonator did indeed reduce the sound.

[TurnThePage]

Agreed! CharlesinGA provided a great example of the improved sound. I would opt for that mod in a heartbeat.

[BarneyS]

CharlesinGA,
Good demo! Thanks.:)
Barney

[CharlesinGA]

I installed the same resonator on the earlier non-inverter model of the Onan 2500LP (runs at a constant 3600 rpm). The exhaust on mine has a "poot-poot" sound that was annoying, and after installing the resonator, the volume of the sound was not appreciably reduced, but the TONE was changed, and the "poot-poot" sound was pretty much gone.

Installing it on the new inverter model Onan 2500i probably has less effect as the engine generally runs slower (2445-2900 rpm) and never gets close to the 3600 that a non-inverter generator runs at.

Here is a video that I did showing the difference on my trailer. YT messed me up by converting it to a "short" so all of the description of what it is and why is not visible to the viewer unless they click the three vertical dots in the upper RH corner and select "description". I will have to eventually edit the video to longer than a minute by adding some BS at the beginning and end but for now you are stuck with looking at a 40 second short.

https://youtube.com/shorts/NQEtWhQr8ps?feature=share

I have since cut out a section of the pipe under the trailer and welded the resonator in place.

Charles

[Fulltimers]

The title of this post is deceiving. The difference is insignificant. Not worth the money as far as I can tell.
My Generac 65G is pretty quiet. It is mounted wrong and resonates through the chassis which makes it louder inside than outside.

[Lwiddis]

Very interesting demonstration. TY for posting.