Firewall insulation??

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wingnutzster
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Firewall insulation??

Unread post by wingnutzster » Fri Feb 10, 2012 1:37 pm

Howdie RV'ators, me with a stupid question again....

I am looking for a locally available, affordable, lightweight, flame, sound and everything proof firewall insulation. I am in contact with Dynamat SA and am expecting some samples any day now, their product namely Dynamat Extreme seems popular among RV folk in the US but hasn't really caught-on here yet, and then I saw the pricing and understood why!!! :cry: :cry:

I am looking for a cheaper alternative that is as, or nearly as effective for the RV-7A. Please advise, and as usual throw in any comments you wish re the use and application of insulation on the 7A or any airee.
BTW RV-7A 73718 is progressing nicely, inspired by builders like Rudi and Ian and with some new drive in 2012 I have been pushing quite hard and she's starting to take shape, not too long now. Will post some progress on my build thread - I am terrible at that but will make a plan this weekend :D
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Re: Firewall insulation??

Unread post by Orthin Opter » Fri Feb 10, 2012 7:32 pm

wingnutzster wrote:I am looking for a locally available, affordable, lightweight, flame, sound and everything proof firewall insulation.
Flame proof could be light... sound proof depends on the wave length, so plan on many layers, from light to real heavy (close to lead) to damp out all the different wavelengths, then fly the machine and find the wind noise is the greatest enemy. :(

My advice: contact Sondor (Edenvale) for the flame retardant insulation, then buy good noise canceling headsets (Zulu).

Hell if your customer can afford a new aircraft, he should invest in decent headsets...
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Re: Firewall insulation??

Unread post by wingnutzster » Mon Feb 13, 2012 10:26 am

Dynamat SA have made contact and are absolutely fantastic to work with, I highly recommend their Tac mat in this application for any airee, FAA regulated and super light and affordable but with all the flame retarding, noise suppressing qualities of their Dynamat extreme, and self adhesive too!

An american product but locally represented by Dynamat SA.
Check out - http://www.dynamat.com/products_car_audio_tac_mat.html
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Re: Firewall insulation??

Unread post by wingnutzster » Mon Feb 13, 2012 10:38 am

Orthin Opter wrote:
wingnutzster wrote:I am looking for a locally available, affordable, lightweight, flame, sound and everything proof firewall insulation.
Flame proof could be light... sound proof depends on the wave length, so plan on many layers, from light to real heavy (close to lead) to damp out all the different wavelengths, then fly the machine and find the wind noise is the greatest enemy. :(

My advice: contact Sondor (Edenvale) for the flame retardant insulation, then buy good noise canceling headsets (Zulu).

Hell if your customer can afford a new aircraft, he should invest in decent headsets...
I hear and don't disagree. I think there is a lot to be said for the noise dampening qualities of this stuff to tackle engine noise specifically but really as a benefit of the insulation and not a primary function, wind noise would be considered a separate issue which as you rightly say is almost a none-issue with today's noise cancelling headsets . Thanks for the lead =D>
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Re: Firewall insulation??

Unread post by paulincapetown » Tue Feb 14, 2012 10:57 am

Hi Wingnutzster
I was looking at the same thing this w/end posted on on of the US builder websites. Dynamat Extreme seems o be the way to go but is very pricey. Please let me know if you find a reasonbale alternative in SA. I am kean to add a bit of sound proofing to my RV7 if not a big cost issue
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Re: Firewall insulation??

Unread post by wingnutzster » Thu Feb 16, 2012 11:21 am

Brad the dynamat SA representative is meeting me at the workshop on Friday...if anyone wants to join us re finding the best product and the application thereof to an RV,

contact me on 0842854835
or wingnutzster@gmail.com
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Re: Firewall insulation??

Unread post by wingnutzster » Mon Feb 20, 2012 12:40 pm

Fitting Dynamat Extreme
Last edited by wingnutzster on Mon Feb 20, 2012 12:43 pm, edited 1 time in total.
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Re: Firewall insulation??

Unread post by wingnutzster » Mon Feb 20, 2012 12:41 pm

Had a fantastic meeting with Brad, he demonstrated two amazing products which we are going to install for sure, the Dynamat extreme - absolutely perfect for this application, phenomenal noise surpressing qualities and flame retardent, easy as anything to apply, very neat and surprisingly affordable (to do up the firewall and floor will cost less than R1000!), and then the 'Hoodliner' a very lightweight and extremely fire/heat resistant sponge looking liner for the cowl and high-heat areas.

For more info and pricing give me a shout.
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Re: Firewall insulation??

Unread post by RudiGreyling » Tue Feb 21, 2012 7:45 am

Shoe!

On the other side of the spectrum, i did nothing to the Firewall or top cowl. I insulated my ears! Yes I bought the best noise canceling headsets i could find.
You can hardly insulate the entire airplane from all the noises, but you CAN insulate your entire ear. A headsets is in any case mandatory equipment in my opinion, so buy the best leave the airplane simple.

Less work and less weight on the airplane and much more effective, and I dont have a Firewall heat problem either.

Don't over think it, and if you really want to fit the insulation go for it, its your airplane, build it your way as long as it is safe!
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Re: Firewall insulation??

Unread post by wingnutzster » Tue Feb 21, 2012 9:04 am

RudiGreyling wrote:Shoe!

On the other side of the spectrum, i did nothing to the Firewall or top cowl. I insulated my ears! Yes I bought the best noise canceling headsets i could find.
You can hardly insulate the entire airplane from all the noises, but you CAN insulate your entire ear. A headsets is in any case mandatory equipment in my opinion, so buy the best leave the airplane simple.

Less work and less weight on the airplane and much more effective, and I dont have a Firewall heat problem either.

Don't over think it, and if you really want to fit the insulation go for it, its your airplane, build it your way as long as it is safe!
I hear you Rudi and have heard a similar argument but you have to experience this stuff - there is a lot to be said for insulating the cabin for more than just noise suppression. It is a very lightweight, simple installation on the back of the firewall at a minimal cost. I have seen many builders installing a thicker 'blanket' type insulation, I think this stuff is a far better solution.
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Re: Firewall insulation??

Unread post by Rossco » Tue Mar 20, 2012 6:19 pm

I have a half box or more of the 3M sound proofing material that I imported for my Lancair Legacy build and then used some on my RV8. Nice thing about this product is you don't need to cover more than 50% of a panel to effectively cut out the noise. Something to do with the blocking the harmonics. I cannot confirm how well it works because i don't have any before and after experience but the RV8 seems somewhat quieter than a friends RV7 but that may just be the owner in me talking.

On the RV8 I used it on the inside of the firewall and some on the rear fuselage area. The Lancair cockpit has it on the sides, floors and firewall. In all honesty I cannot say that in either aircraft it'd be comfortable to go headset-less for too long. I find that the Bose ANR headset is the best soundproofing for the money.

See http://www.aircraftspruce.com/catalog/a ... panels.php for a description of the panels. I'm happy to let these panels go for R200/sheet but I am Cape Town based.
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Re: Firewall insulation??

Unread post by mauritz » Wed Mar 21, 2012 9:57 pm

by RudiGreyling » Tue Feb 21, 2012 7:45 am
On the other side of the spectrum, i did nothing to the Firewall or top cowl. I insulated my ears! Yes I bought the best noise canceling headsets i could find.
You can hardly insulate the entire airplane from all the noises, but you CAN insulate your entire ear. A headsets is in any case mandatory equipment in my opinion, so buy the best leave the airplane simple.
Sorry for hi-jacking the post. Rudi which headsets would you recommend?
I see Aircraftspruce have Bose for just over a $1000.00 and Lightspeed zulu for just under a $1000.00
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Re: Firewall insulation??

Unread post by paulincapetown » Fri Mar 23, 2012 11:36 pm

I agree re headsets
Got myself some Bose - impressive!!!! also thinking about insulating but not sure
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Re: Firewall insulation??

Unread post by RudiGreyling » Tue Mar 27, 2012 10:24 am

mauritz wrote:
by RudiGreyling » Tue Feb 21, 2012 7:45 am
On the other side of the spectrum, i did nothing to the Firewall or top cowl. I insulated my ears! Yes I bought the best noise canceling headsets i could find.
You can hardly insulate the entire airplane from all the noises, but you CAN insulate your entire ear. A headsets is in any case mandatory equipment in my opinion, so buy the best leave the airplane simple.
Sorry for hi-jacking the post. Rudi which headsets would you recommend?
I see Aircraftspruce have Bose for just over a $1000.00 and Lightspeed zulu for just under a $1000.00
The latest and greatest ANR from Zulu, Bose or Seinheiser! your ears are worth it, and you will be a more relaxed pilot and pax.
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Re: Firewall insulation??

Unread post by ZU-EUF » Tue Mar 27, 2012 8:11 pm

Hi all

Just be carefull we tested the Dynamat against Avgas and the product desolved, just a bit of useless info.

I decided on the hood liner with a foil lined fiber.

Will do noise tests as we go along.....

Cheers

Norman

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