| Author |
Message |
FAST FRED (4.245.230.83)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 19, 2004 - 5:42 am: | |
For folks installing a noisemaker (genset),
QUIET is done with good design and Sounddown 2 inch thick insulation with 2# lead sheet inside.
At least 3 ,90 deg turns of the incoming and leaving air , will produce a nice quiet unit.
But what about the coach engine?
There is seldom space to install 2 inches of anything , but a new (untested by me yet) marine product claims to solve the problem.
I recieved literature from a company that (like the rooftop insulationblowharts) claims the world.
www.silentrunning.us
Have NO idea if it works any better than "NASA"insulating paint works , but will be going over to look at the mfg. in the near future.
It might solve some problems for us , but one Biggie requirement is it needs to be applied to a "Clean" surface , not my coach engine room's usual condition , but EZ enough in the boats engine room.
FAST FRED |
DaveD (142.46.199.30)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 19, 2004 - 8:18 am: | |
Looks pretty interesting. I've sent for further information.
DaveD |
John that newguy (199.232.240.181)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 19, 2004 - 8:20 am: | |
I would imagine that any rubberized compound would do the trick.
The greater elasticity of the surface, the more it will dampen both
vibration and sound (which -is- vibration). But it doesn't have to
quiet anything very much to meet the legal obligations of the ad.
Although they don't mention any fire retardation quality, I wonder
if that exists at all. Will the application of this stuff in close
proximity of all that engine heat going to present a problem?
They noted:
"The viscoelastic properties of Silent Running liquid-based coatings
absorbs the noise and vibration and converts it into low-grade heat,
which is dissipated throughout the applied surface."
(Low grade heat? Just what we need more of....)
I think we should do some tests in our basements and report the
results.
(ahhh.... har har har)
(sorry) |
DrivingMissLazy (66.168.175.51)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 19, 2004 - 9:01 am: | |
Several years ago I tried something like this and if worked good for damping vibrations in large sheet metal panels on the enclosures I was using to house the equipment I manufactured. I really did not find it cost effective as it only seemed to reduce the drumming effect of the panels. Actual noise reduction of sound transmitted thru the panels was minimal. I found out that convoluted foam did the best overall job of noise reduction.
Richard |
Cliff (Floridacracker) (65.33.16.77)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 19, 2004 - 11:23 am: | |
Fred,
Do you have a picture of the air system you are talking about?
I would be interested in seeing your design.
Cliff |
FAST FRED (4.245.191.254)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 19, 2004 - 2:16 pm: | |
Sorry , My ancient propane air cooled ONHO is slideout installed so tight to the old '06 drivers blower compartment that no silencing was possible.Although threr Might be room for fancy thick paint.
For the silencing concept , just draw a box , and envision a hole in it to feed air.
Draw a duct with 2 90Deg turns .
From inside the box a ping pong ball started in any direction should hit 3 surfaces before getting free.
BE sure to go by Da Book for the SIZE of the cooling air supply or dump.
Too small a duct will be sure to cause overheating , the Mfg only gives MINIMUMS.
FAST FRED |
madbrit (67.136.98.38)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, August 20, 2004 - 9:16 am: | |
How about that product they use in these Boom Box cars, I think it is called Dynamat at dynamat.com It's meant to be a great sound deadener and quite thin too.
Added bonus is they say it will insulate too and can be placed on the inside of a car's hood to reduce heat and sound.
Also seen for sale on the E**y website too.
Peter. |
Mike M (64.252.214.141)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 21, 2004 - 2:35 pm: | |
The soundown material works great, unfortunately costs around $20 sq. ft. By the time I was done insulating my box, cost was close to $900 just for sound deadening. (didn't even do floor).
Oh the price of silence! |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, August 22, 2004 - 2:03 am: | |
I used Dynamat (actually a product clone called "deathmetal") on the walls and floor of my front cabin. It quieted things down considerably. Recommended. BUT it works differently than soundown and may not quiet things as well in similar installations. It's much closer to the Silent Running stuff in how it works. It's probably better, cause it'll be thicker. But then again it isn't painted on so it won't dampen complex shapes like the paint will...
Endless choices... |
FAST FRED (4.245.209.244)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, August 22, 2004 - 5:25 am: | |
"Oh the price of silence! "
Is certainly the choice every neighbor with in 3000ft will wish you had made.
Unless you think the Flying J is "Camping".
FAST FRED |