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24th October 2013, 08:55 PM
#1
Patrol God
Sound dampening..
Well a pull up on the reigns after parksy informed me of an issue I have been reading..
And have come across this..
http://www.sounddeadenershowdown.com
It's an interesting read, and has possible saved me hundreds..
Just to cap the link as it is quite long..
Products like dynamat and fatmat are sound dampening products, not sound blocking / absorbing.
So for these products to be at full effect you only need a panel surface coverage of 24%.
The idea if 100% coverage has come from aftermarket auto lines.
The reasons why, Its thin and dense. So the sound waves pass right threw like it was sheet metal.
Quote from link
"
It's the barrier layer that makes the most difference. I use mass loaded vinyl (MLV) for this. MLV is the answer to the question: "How inexpensively can we create a substitute for lead sheeting that will accomplish the same thing"?
Mass loaded vinyl is dense and limp - the ideal characteristics for a barrier. A material's resonant frequency is determined by its mass, stiffness and geometric. Low mass/high stiffness mean high resonant frequency. High mass and low stiffness mean a low resonant frequency. MLV and lead sheeting have resonant frequencies below the the audible range. Makes it an excellent barrier.."
So I my friends will be probably bypassing the dynamat, and going a different option.
Sorry parksy..
Last edited by BigRAWesty; 25th October 2013 at 12:24 AM.
Cheers
Kallen Westbrook
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The Following 5 Users Say Thank You to BigRAWesty For This Useful Post:
AJTich (28th October 2013), MudRunnerTD (24th October 2013), Parksy (24th October 2013), PMC (28th October 2013), Stropp (26th October 2013)
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24th October 2013 08:55 PM
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Circuit advertisement
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24th October 2013, 09:00 PM
#2
Moderator
Very interesting link Kallen.
When i did the rebuild in the GQ i fitted a small section of deadener (A4 size) to the inside of each of the door skins rather than trying to do the whole door. I am pleased with how quite the GQ is even running Simex tyres.
Very good link mate cheers.
Its a Nissan! =====> Its a Keeper!! ....... Got a TD42 in it BONUS!!
....... I'm a lucky bugger! I've got 2 of em!
Check out my Toy -->
MudRunnerTD's GQ From the Ground Up
Originally Posted by
Rogue Dung Beetle
Wish it was Nissan though, Toyotas just can't keep up with the Pootrol pace.
The only good thing about an 80 series is..... the front end?? Wrong!!, the Engine?? Wrong!! the Full Time 4WD system?? Wrong!! Its the NissanPatrol.com.au stubby holder fitted over the transfer lever.
WARNING: Towballs used for recoveries can, and do kill people and damage property.
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The Following User Says Thank You to MudRunnerTD For This Useful Post:
BigRAWesty (24th October 2013)
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24th October 2013, 09:50 PM
#3
The 747
I can't wait to take my Patrol off the road for a couple of weeks some time to do this sort of thing.
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24th October 2013, 09:57 PM
#4
Patrol God
Originally Posted by
MudRunnerTD
Very interesting link Kallen.
When i did the rebuild in the GQ i fitted a small section of deadener (A4 size) to the inside of each of the door skins rather than trying to do the whole door. I am pleased with how quite the GQ is even running Simex tyres.
Very good link mate cheers.
We'll I did notice the other day when running wires for the middle door speakers, that there was a piece of matting already on the outer skin..
About 130x100..
Sure its not the "magic 24%“ but I'm guessing it's the reason why it's there..
I guess the matting has the floor sorted, but what to use for the door skins??
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24th October 2013, 10:15 PM
#5
Patrol Freak
Cheers for that westy. I too have been doing a lot of reading on the subject and I've come to the conclusion that the thin foil/butyl sheets are good at reducing vibrations and adding a "solid" feel to the vehicle, but aren't the answer to a super quiet vehicle.
In my research I have found a product called luxury liner pro made by second skin. Only problem is that it's a US company, need to see if we have any Aussie dealers.
http://store.secondskinaudio.com/luxury-liner-pro/
Watched a video on YouTube of this stuff and it looks heavy! Perfect for sound deadening.
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24th October 2013, 10:45 PM
#6
Patrol God
Am looking also. That's a good find
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24th October 2013, 10:58 PM
#7
Patrol God
Last edited by BigRAWesty; 24th October 2013 at 11:11 PM.
Cheers
Kallen Westbrook
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25th October 2013, 02:28 AM
#8
MLV.
Jaycar stock this stuff by the looks of it.
page 226 in 2013 catalogue.
also online
IF IT'S NOT A NISSAN.
THEN IT'S A COMPROMISE
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The Following 2 Users Say Thank You to Robo For This Useful Post:
BigRAWesty (25th October 2013), Parksy (25th October 2013)
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25th October 2013, 08:45 AM
#9
Patrol Freak
Originally Posted by
MudRunnerTD
Very interesting link Kallen.
When i did the rebuild in the GQ i fitted a small section of deadener (A4 size) to the inside of each of the door skins rather than trying to do the whole door. I am pleased with how quite the GQ is even running Simex tyres.
Very good link mate cheers.
It's not quiet enough for you to hear the cable ties around your tail shaft though!
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The Following 2 Users Say Thank You to liftlid For This Useful Post:
MudRunnerTD (25th October 2013), Winnie (25th October 2013)
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25th October 2013, 08:53 AM
#10
Patrol God
I'll still will be using Acoustic batts in the Quarter panels, mainly to stop HWY droning sound
great link Kallen
04 ST 3lt auto, not enough Mods to keep me happy, but getting there
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