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02-28-2008, 08:17 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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How do you apply it?
Quote:
Originally Posted by LARCO
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Larry... the AC Spruce page was rather deviod of details....
The 3M data sheet is also sparse, but does say it's 1/4 inch thick and weighs about 1/4 lb per sq. ft.
http://multimedia.mmm.com/mws/mediaw...666AFUCOrrrrQ-
Could you tell us how you apply it to a typical Vans two seater? Do you apply it to tightly fit the spaces, or just as a dampener in the center of the panels?
thanks gil A
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Last edited by az_gila : 02-28-2008 at 08:19 PM.
Reason: added Q.
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02-28-2008, 08:37 PM
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Join Date: Sep 2005
Location: 1T7, Kestrel Airpark , Texas
Posts: 773
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Straight from the source
Rick
It came directly from Silent running, I emailed then called to talk with them. While they recommend 50 mils, Marc said given the thickness of our skins I could get away with cutting down to 40 mils, so that should shave a bit of weight as well. I bought a 1 gal kit which they say covers 40 sq ft at 50 mils. I plan on coating the top front skin (glareshield to firewall), firewall, and floor. Although, I do not think fire is a problem with it, given the published flame propagation data, I will enough extra to do my own fire tests to be 100% sure. Hopefully some time this year we'll see how well it works.
Here is a copy of the email text I received.
"In the interest of weight we came up with the SR 700, which is about 25%
lighter than the SR 500 or SR 1000.
While not yet on the website, it is available.
Sound damping properties are essentially the same as the others, while
saving weight.
Flame and smoke tests differ only slightly, the SR 1000 has to pass much
more rigorous test to meet the US Coast Guard approvals, the SR 500 has
passed the CA state building code section 8.1 approval as well as the
Federal Railroad Assoc. test for flammability and smoke density.
Basic bottom line is, if any of our products are on fire, you have much
bigger problems!
If you would like to see copies of any of the above please let me know.
Thanks for your interest in Silent Running.
Marc Doheny
Silent Running"
Quote:
Originally Posted by RickWoodall
I liked their little video and was interested in the sr1000. My chemist buddy told me it was a big waste of money and couldnt work as advertised. What does he know...no idea, i just asked his opinion. Anyway, where did you get info the on the sr700? I cant find it on any of there info or press news? Anyone actually use any of this liquid or another brand in and a/c?
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__________________
Wade Lively
-8, Flying!
N100WL
IO-360A3B6D, WW 200RV
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02-29-2008, 06:39 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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Hi Gil, They fit real nice between the floor stiffners and we just cut the stuff to fit the areas of the firewall. I have used it since 1995 when I built my 6 and it really helped on the floor. It also helped adding the turn downs on the exhaust, at that time the exhaust pipes came straight out. It seems that everyone who has used this since has been happy with the results. Of course the Bose helps with the general noise also. :-) Larry
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02-29-2008, 08:04 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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# of layers?
Quote:
Originally Posted by LARCO
Hi Gil, They fit real nice between the floor stiffners and we just cut the stuff to fit the areas of the firewall. I have used it since 1995 when I built my 6 and it really helped on the floor. It also helped adding the turn downs on the exhaust, at that time the exhaust pipes came straight out. It seems that everyone who has used this since has been happy with the results. Of course the Bose helps with the general noise also. :-) Larry
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thanks Larry,
Do you just use one layer on the floor, or build it up with three layers to make it flush with the top of the stiffener angles?
gil A
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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03-01-2008, 09:18 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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I just used one layer. The carpet looks ok but you can see the stiffners. I am using the same thing on the 7 now in progress, and will add another 1/4 in perhaps but want my feet as low as possible. Some have complained about their feet being to high if to much stuff is put on the floor. Larry
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03-08-2008, 01:05 AM
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Join Date: Aug 2006
Posts: 114
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sound
Did the floor with 3/4 super sound foam from spruce (plus 1/4 plywood & carpet), front side walls with 1/8 and the firewall with 3/8. Showed a 2 to 3 db difference depending on where you measured, which was noticeable and I am glad I did it. Unfortunately I used 3M spray adhesive which was not a good solution long term as foam (especially firewall) has become unglued in places.
Bryan
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03-08-2008, 08:51 AM
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Join Date: Feb 2005
Location: Maryland
Posts: 180
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When to apply insulation?
I am currently working on the firewall forward area of the fuselage and ready to attach the aft fuselage to the center and forward sections. I am not sure what type of insulation I will use yet, so I am following this thread. Question. When should insulating/soundproofing materials be applied? Or does it matter.
__________________
Jim Buechler
RV 9A - N194HW
I/O 360, Whirlwind 200RV C/S, Slider
RV 10 - 313RT
Beechrv9a@hotmail.com
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