Titanium Firewall

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Titanium Firewall

Postby Tralika » Sun Sep 04, 2016 9:14 pm

I fitted the stainless steel firewall that came with my kit prior to covering my plane. In the mean time I saw a titanium firewall that F. Atlee Dodge makes for Cubs. I did some checking and found out that McMaster-Carr has .020 titanium in 24 X 36 sheets for about $150. I spoke to the folks at Atlee Dodge and found out that they use .025 Titanium but they said that .020 was fine for a firewall. According to them, material as thin as .018 is acceptable on certified aircraft. I bought a sheet of titanium from McMaster and just finished fitting it. It is almost 4 pounds lighter than the stainless firewall (3 pounds 12 ounces to be exact). I haven't finished the last cut to fit the top of the firewall to the bottom of the boot cowl so it I may save a few more ounces when I'm done.

So that comes close to $40 a pound. Not cheap but worth it to me. The photo shows the titanium firewall mounted on the plane and the stainless firewall on the floor.
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Re: Titanium Firewall

Postby BDA » Mon Sep 05, 2016 6:54 pm

Nice find!!
I will use that
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Re: Titanium Firewall

Postby Clark in AZ » Tue Jun 26, 2018 11:42 am

So, educate me on titanium. Does it have better fire resistance than SS? Any other advantages other than being lighter?

Thanks,
Clark

WOW! I just went to McMaster Carr and they don't show the .020 anymore, have .016, .032. The .032 24" x 36" is now $1,066 and the .016 is $975. Plus shipping. Guess this mod it off the table, unless of course I'm looking at the wrong parts.
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Re: Titanium Firewall

Postby sonex293 » Tue Jun 26, 2018 3:34 pm

Look for part number 9051K111 on McMaster's website.

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Re: Titanium Firewall

Postby Clark in AZ » Tue Jun 26, 2018 3:37 pm

Got it, thanks! That's more reasonable.

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Re: Titanium Firewall

Postby Tralika » Tue Jun 26, 2018 8:45 pm

[quote="Clark in AZ"]So, educate me on titanium. Does it have better fire resistance than SS? Any other advantages other than being lighter?

The melting point of titanium is 3000f, stainless steel about 2700f give or take depending on the alloy. Keep in mind that if you have a significant engine fire in flight it's unlikely the firewall is going to save you. With a fiberglass boot cowl above the firewall, fabric on the sides and below the firewall, a fire is going around the firewall before it ever has a chance to heat up the metal to the melting point. From a practical standpoint we could probably use aluminum get the same protection.
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Re: Titanium Firewall

Postby Clark in AZ » Tue Jun 26, 2018 9:37 pm

Thanks for the explanation, that's what I was thinking. I thought maybe there was some other characteristic I was not aware of? However, being lighter weight is a good enough reason!

So, how is your firewall holding up? Would you do it differently, or a different thickness, if you had to do it over?

Thanks for the response!
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Re: Titanium Firewall

Postby Tralika » Thu Jun 28, 2018 12:31 pm

I'm happy with the titanium firewall. It was easy to cut and drill during installation. I don't notice any flexing or oil canning, it just lays there nice and flat. The .020 thickness is fine. As I said in the earlier post, they go as thin as .018 in certified aircraft but I don't know if that would save much weight over the .020. I'd defiantly install it again. I haven't figured out what to do with the SS firewall blank that came with the kit though.
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Re: Titanium Firewall

Postby BucF16 » Thu Jun 28, 2018 7:20 pm

Sell it to a KitFox builder. :twisted:
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Re: Titanium Firewall

Postby BDA » Sun Sep 16, 2018 5:10 pm

I did end up using this.

Great way to cut weight!

Shipping to Alaska was really bad tho, if you are planning to use this in alaska, might plan ahead and find better shipping.

I havent flight tested it yet but noticed it transmits alot more heat when working it than other metals, makes me wonder if it will make it warm in the cabin???
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Re: Titanium Firewall

Postby Clark in AZ » Sun Sep 16, 2018 5:47 pm

BDA wrote:I did end up using this.

Great way to cut weight!

Shipping to Alaska was really bad tho, if you are planning to use this in alaska, might plan ahead and find better shipping.

I havent flight tested it yet but noticed it transmits alot more heat when working it than other metals, makes me wonder if it will make it warm in the cabin???


Good info. What thickness did you go with?

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Re: Titanium Firewall

Postby BDA » Mon Sep 17, 2018 2:05 am

I used the .020
Really thin

I should have rolled some beads for stiffness
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Re: Titanium Firewall

Postby Clark in AZ » Mon Sep 17, 2018 6:36 pm

Thanks for the response and more info! I'm thinking about going with the .032 just to have a little more stiffness. Not as thick as the stainless .040 but it will still save weight.

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Re: Titanium Firewall

Postby BDA » Wed Sep 19, 2018 5:18 am

I chose to use aluminum to cover the belly under the boot cowl, but

If there was a fire, that might be gone pretty quick, was thinking if I had a little more titanium, I could wrap several inches down and under behind the firewall to protect my little pigs.

Had a friend who had a fuel fire at altitude and burned his feet pretty bad before he could get down and ditch in the water.
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