Acoustical barrier for RTV

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bczoom

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I got to pondering about how much people say how quiet the RTV 1100 is.

So, I'm thinking of installing acoustical panels to see if I can quiet the passenger compartment a little on my 900.

Obviously, there's not a lot of practical solutions for sound emissions from the sides of the engine but I'm thinking that if I installed some sound barriers to the underside of the cargo box it may reduce noise from the engine.

I've heard others say great things about the DB Engineering acoustical products so I'm looking at those.
They make a product specifically made for engine compartments.
Here's a link http://www.cabinsulation.com/engine.htm

The supports on the underside of the cargo box are about 1.25" so I'm thinking of installing the 1" metalized mylar insulation.

I'd order it now, but one of my neighbors has a company that does a lot of acoustical work so I'm going to see what he recommends.

Any thoughts?
 
Been known to make alot of noise from time to time. But never been known much to suppress it [8o|]</P>


Keep us up to date on this and what you find out. I myself would be somewhat interested!!!</P>


~~~~~~~ thanks</P>
 
OK, just for the heck of it (and because I had some laying around), I installed 1" polyisocyanurate insulation under the deck. It didn't help <u>at all</u>. It's not dense enough.

My neighbor (that does building acoustical work) took a look but doesn't think he has any material suitable for a vehicle.

I think my next test will be to remove the cargo box and lay a 1" stall mat (the very dense hard rubber mats for horse and cow stalls) over the bed. If it works, I may just cut it to size, get longer bolts and put the walls and tailgate over the top of the mat. It's very dense and can take serious impacts so it may also help protect the bed floor. The bad part is it's very heavy.

I hate to buy the DB stuff (for about $100) if it's not going to work...
 
Yes, that can become a expensive experiment . Seem's like most of the noise would come from the space between the bed and cab. And the bed being a "box" ,that there just seems like to become a roar box for noise.
 
Have you received you high air box yet. It has a " small roar" noise in it. </P>


When your running the RTV & let off the fuel to come to a stop, it sounds like a small " Jake " brake or engine brake like whats on our Peterbuilts. Some folks thinks it sounds cool. Some might not like it. </P>


Myself, it don't bother me a bit ~~~~~</P>


Is your wooden bed is louder than the metal bed ?</P>
 
Haven't received the new air box yet. I was at the dealer last Saturday and according to the shipper, it was "on the truck for delivery". To me, that means it's on the local UPS truck for drop off that day. Well, the dealer called yesterday and said it'll be another week or so. No biggy.

It's been so long since I had the metal box that I don't know but would expect my wood one to be quieter. On my wood box, the <u>bed</u> of the OEM box was left in place and the wood box put over the top of it. (I only took the sides and tailgage off). Since it's made of 1/2" to 1 1/4" wood, it's denser than the metal and therefore I'd say it's probably quieter.

I'm thinking of getting some rubber that's maybe 1/4" thick and lining one or both sides of the plastic wall that separates the passenger compartment from the engine compartment. Since this is the thinest material between the engine and seating area, making that thicker may be the ticket to quiet things down some.
 
Maybe if you can find a fatigue mat with small holes or hex ,or oxy shaped to obsorb some of the sound waves. Other than egg crate style layers, we have used oxy shaped materials in indoor shooting house before, and it shuts down the blast of weapon-fire ~~~ </P>


That is if a person could find some thin enough to set between the bed & cab space >>></P>


</P>
 
Rubberized vechicle undercoating would work great on the underside of the bed. Its like $7/can. </P>
 
While doing research for a liner I found that Linex claims their product when installed on the bed will dampen the noise somewhat.

kas1263@13.7 hours.
 
<p class="MsoNormal">Just to let you know, I have been experimenting with
dampening the sound as well.<span style=""> </span>I had a
plastic bed lined installed in the bed on my fathers new Kubota RTV
Recreational model in order to cut down on damage to bed.<span style=""> </span>Hauling stones and firewood can take their
toll!<span style=""> </span>I wanted to put something in the
bed so that the dogs could have a good ride when they were tired and needed a
rest ( plastic bed liner is not the best for dogs .<span style=""> </span>I used cow mats before.<span style=""> </span>I have installed them in my ½ ton pickup over
my bed liner for added weight and comfort.<span style="">
</span>I cut the mat so that it lays in the back bed of the Kubota.<span style=""> </span><span style=""></span>I used
a reciprocating <span style=""></span>saw to make the actual
cut – works the best.<span style=""> </span>Also, I cut the
mat only 1/3 way through on the edges and bent the mat so that it can continue
up the sides of the bed.<span style=""> </span>The mat covers
the bottom and sides as one piece.<span style=""> </span>This
system works out nicely.<span style=""> </span>I secured the
mat by putting clamps on the top edge of the bed – to clamp liner to the
bed.<span style=""> </span>If you are really into multi
purpose solutions, use a clamp that has a round eye hole on it so that you can
use the clamp as a tie down as well.<span style="">
</span>The cow mat has cut down the noise amount noticeably.<span style=""> </span>I can take the cow mat if needed to haul
messy load.<span style=""> </span>Hope this helps.<span style=""> </span>I will try to post picture when I get the
time.<span style=""> </span>Thanks. <span style=""></span></p>
 
Thanks.

I guess I'll start cutting a mat.

Out of curiosity, did you notice any difference (difficulty) in getting a load of wood or stone to slide off the mat?
 
I installed a horse stall mat a few weeks ago in the bed and notice no difference in the noise level. It does great for protection though.

kas1263@21 hours
 
Thinking that some folks who want to reduce noise. They can purchase about six to eight Limbsaver noise reducing mushrooms. I myself, believe in these things on crossbows. If you ever been around high performance crossbows, they make a super loud " whang " when they go off .... Use these during deer season, Sure quiet things down around you when you release that shaft in the heart of the woods , anyway, </P>


I have put two on my crossbows, and it suppresses / removes the realloud whang sounds..... If someone would attach these under the bed of the RTV's, , I would bet, they would suppress & reduce the noise factor so much. A person could even make or find something of that nature that would work just fine >>>>>> </P>


One could even put some inside his cab, on his metal roof if it viberates, or just about anywhere or anything he would want to reduce some roaring viberating noises .........Way I look at it , the engine is roaring the metal bed, or the back of the cab, if you would install one on whatever is making the noise, should reduce or eliminate the noise >>>>>></P>


I have seen many of simular items on heavy equipment like this that reduces noise, I don't see why in the heck this wouldn't work on a RTV, or any other utility vehicle >>>> Be worth a try !!!!</P>


The little items in the pics are for other things, the mushroom items are what I am talking about !!!</P>


They are many companies that make these mushroom noise reducers, or something simular, but I have found that the Limbsaver brand seems to work better !!!</P>
 
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