Tip: Firewall sound proofing blanket

[DanB]

Take a look at a product that Spruce sells called Fiberfrax. It's a flexable material that is about 1/8" thick made from ceramic fibers. The product resists temps up to 2300 degrees. Easy to work with.
Dan B
Mesa, AZ

[RV7Guy]

I used the stuff from JC Whitney with the silver backing. Definitely reduces the heat penetration from the firewall.

Make those templates early and cut the pieces as you take a break from other tedious work. As noted, after you get the everything done you can make the cuts and fit them in place.

Finally install will result in some bloodshed, not getting around it.

[MrNomad]

Originally Posted by RV7Guy

I used the stuff from JC Whitney with the silver backing. Definitely reduces the heat penetration from the firewall.

Darwin:

Please post the part number or description from JC Whitney.

Thanks.
Barry - RV9A
Tucson

[RV7Guy]

Originally Posted by MrNomad

Darwin:

Please post the part number or description from JC Whitney.

Thanks.
Barry - RV9A
Tucson

Here it is:

http://www.jcwhitney.com/autoparts/I...D:100000328424

[Sandman]

Hey, not advocating the company or product but if you are interested go to www.soundexproducts.com... He will sell you the kits or bulk material. The kits have the templates as well. He was in the back tents at Sun& Fun...seems a bit pricey, but it is another option.

[fodrv7]

I brought mine from http://www.fly-gbi.com. Nice people.
They supplied templates which were very accurate.
I applied a cigarette lighter to the foam and it simple melted, but would not ignite.
After cutting out the shapes, I used contact adhesive to attach Builder's Aluminium (Alais Aloominum) window flashing (about 0.020") to one side of the foam. I glued the insulation to the firewall with the Aluminium facing aft.

The insulation was installed when the fuse was complete, but before starting the canopy OR RIVETING THE FORESKIN ON.

GeoBeck also provided 1" foam for the floor which is equal to the height of the floor Longerons.

I have never sensed any heat transmission through the firewall and the cockpit temp is controllable with eyeball vent air even on a 40?C Aussie day.
Pete.

[Harvey L. Sorensen]

In Spruces catalog tey have what they call super soundproofing sheet that is recomended for firewalls. I used it on my floor and firewall and foward fusalage sides ahead of instrument panel. I don't know if it makes the plane any quieter or not as I have nothing to judge it by. I did it mostly on the firewall to keep the engine heat out and maybe make it a little quieter

RV-9A, o-320, C/S prop, steam guages.

[mark schoening]

Try this site for info on firewall protection---paints on
http://www.aircraftextras.com/Contego.htm