quiet box for a gen set

[busshawg]

Thanks for the great responce once again guys. Lots of useful info that helps to ease my mind about different types of material. I think I will insulate my A/C condenser compartment then line it inside with 1/2 or 5/8 plywood.  Shoul dmake it much better than what I had, which was nothing.

Thanks again.

[RichardEntrekin]

Do any of you guys have a source for the mounts for the genny? Mine is definitely transmitting low frequency vibration to the frame and into the coach. It's really quiet outside the coach, and low frequency loud inside.

[TomC]

Could add air bags to the bottom of the gen or compartment to isolate it from vibration-very effective.  Call Dick Wright at Wrico International.  Good Luck, TomC

[JohnEd]

Richard,

That steer you got to Dick Wright was a good one.

If that doesn't work out for some reason:  Shock mounts are "rated" by the amt of weight they support.  If you use a mount rated for a thousand pounds on each corner of your genny you might as well hard mount the genny to the metal floor.  The same goes for dramatically UNDER RATING the mount cause it then is held at its extreme compression.  The Goldy Lockes principle applies here.

After weight you run into the method of dampening.  The cheapest is the "spring mount" but they have a harmonic and the entire genny will assume a life of its own while bouncing down the road and bounce and jounce till stuff falls off.  Then there are rubber mounts and they are self dampening and very good.  I think the best are "liquid filled" rubber.  You can get this stuff from Granger but the cheapest will be the internet.  You can't really do that till you learn how the specify the things in engineer speak.

I am sure without doubt that Dick sells exactly the product you want and he has taken into consideration things I can't even imagine.

Good luck with this and keep us informed and contribute to the knowledge base,

John

[NewbeeMC9]

Dig around in here if you see if you find something you like 



http://www.mcmaster.com/#engine-mounts/=18uq3r

[niles500]

4 old small lawn mower front tires, go cart tires, etc. (you know the size) mounted on the corners between gen frame and bay floor will work - also look into HVAC heavy rubber isolators - I have "air ride" but they can be a pain when the valves or bags start to leak - HTH