Honda 2000 quiet box, I'm back!!
https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28956619/srt/pa/pging/1/page/1.cfm Getting rid of the Toyota and bought a Roadtrek. First thing I did was take out the Onan and sell it. S...
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Great link. I followed the video to their page where they sell the Eco Route Silent Box. For the Yamaha ef2800ise the products costs $1,721.71. Looks like a metal shell with some sound deadening built in. The magic being the sound baffle box they designed for the exhaust end of the generator. If they used mlv on the shell, they could likely knock a few extra DB out of the overall box.
This guy described how a sound baffle works for exhaust nose the best I have seen and shows how he built his box. He also sells some very nice plans for wood generator enclosures and claims up to 5X sound reduction. https://www.youtube.com/watch?v=_qPRIq-9U-4
There is a 2003 study from India titled “Studies On Control Of Noise From Portable Power Generator” by Parvathi and Gopalakrishnan that looks at some unique ways to start deadening sound (should be some better studies since then but I have not yet followed up). I used their bed of sand trick on a whole house generator I had, and it worked as advertised. But the video I posted above appears to be the best homemade project yet.
I did drop the DB in my boat from 63db to 48db by decoupling the generator from the flooring using spring mounts I designed and had built. Since you appear to be wanting to use an inverter generator if you are going to mount it to your RV I would suggest floating the whole box in springs like the ones used in the HVAC industry to quiet hvac equipment. For my project, I used the springs out of a Mason CA-310
Mason CA-310 Spring kit
But you could likely just use valve springs.
Good luck and I would really like to see what you do and learn from your successes and failures.
This guy described how a sound baffle works for exhaust nose the best I have seen and shows how he built his box. He also sells some very nice plans for wood generator enclosures and claims up to 5X sound reduction. https://www.youtube.com/watch?v=_qPRIq-9U-4
There is a 2003 study from India titled “Studies On Control Of Noise From Portable Power Generator” by Parvathi and Gopalakrishnan that looks at some unique ways to start deadening sound (should be some better studies since then but I have not yet followed up). I used their bed of sand trick on a whole house generator I had, and it worked as advertised. But the video I posted above appears to be the best homemade project yet.
I did drop the DB in my boat from 63db to 48db by decoupling the generator from the flooring using spring mounts I designed and had built. Since you appear to be wanting to use an inverter generator if you are going to mount it to your RV I would suggest floating the whole box in springs like the ones used in the HVAC industry to quiet hvac equipment. For my project, I used the springs out of a Mason CA-310
Mason CA-310 Spring kit
But you could likely just use valve springs.
Good luck and I would really like to see what you do and learn from your successes and failures.
Moderator edit to fix URL.
