Worlds Best Heat Shield - Rat Wheel Spinning
 

So who would pay 60 bucks for the worlds best heat shield?

Basically I am thinking of using aerogel as an insulator between the two sheets of metal.

Ideas?

Gold too .....?

Between two sheets of Stainless Steel? What's aerogel?

Its 45 dollars for a liter of granular aerogel. I don't need solid blocks of it.

http://en.wikipedia.org/wiki/Aerogel

I sall that stuff on a show about space, they use it on probes that collect comet dust. Its cool stuff, like 99% air lol. I wanna hold some.

Looks so hot, I want one!

gold foil + aerogel sandwich would be about as effective as you can get. realistically you can just use polished aluminum. no need for stainless steel--its lower thermal conductivity doesn't matter since its not conducting much.

Is this the stuff that floats when charged with static electricity?

How would this compare to the $100 turbine housing insulating blankets?

Sounds cool.
What about a Nomex blanket with an aerogel liner?

Aerogel can have a 1000° delta on opposite sides.

While it would be super rediculously effective. like...about as effective as i can possibly imagine. What about moisture? I know it can play a pivotal role in the deterioration of aerogel. I don't think layers of metal will keep it out =\

That would be sooo hot btw. and by hot, I mean cool. if it wasn't for the fact that there's radiant heat in the engine bat and the proximity to the exhaust in general you could put your hand on that heat sheild while the turbo was running full blast.

Actually, I have a manifold heat shield as well *hmmmm*. what I really would need though is some way to effectively evacuate hot air. Oh god, I have so many fucking good ideas and no money to play with and experiment. Wish I did, because then I'd have a reason to ask for my magnehelic gauge back from scott.

you dont need the nomex if you have aerogel, right?

what about coating the manifold in aerogel and then gold leaf.

hello Mr. $1500 manifold....

i have an aerogel brick somewhere from a trade show. lol

The nomex blanket is basically just the vessel. Plus it would be flexible to fit around any turbo.

Cut costs... make your own Aerogel...
http://adzoe.8m.com/Aerogelsa.htm

i need to coat the floor of the car with that shit

this just reminds me that i need a heatshield.

awesome idea...keep this thread updated. My thin sheet metal in between gives me the heeby geebies

Commercial manufacture of aerogel 'blankets' began around the year 2000. An aerogel blanket is a composite of silica aerogel and fibrous reinforcement that turns the brittle aerogel into a durable, flexible material. The mechanical and thermal properties of the product may be varied based upon the choice of reinforcing fibers, the aerogel matrix, and opacification additives included in the composite.


From that same wiki article...

I am waiting for a quote/sample of the material.

1) Turbo blanket and some downpipe covering with material.
2) Home made blanket using granular aerogel
3) Heat shield with aerogel insulator

Uh... get 2 samples of it... to uh... loose next time you are over here.

Will do, i hope to have confirmation tomorrow. If you get a few minutes measure how many square feet you want that way im not just guessing.

http://www.hackaday.com/2008/03/23/m...r-own-aerogel/

Maybe this will help.

I cant believe anyone can find it financially wiser to make it rather than buy.

I hope the blanket stuff comes through.

An incredibly expensive way to kill someone.... Throw them in a vat of aerogel.

would it?

I suppose it would. It says it's a very powerful dessicant, and that just handling it will leave dry spots on your fingers. Might take awhile, but it'll get the job done.

I would wonder how much moisture it could take out. I guess if we could get someone to swim through a pool of it.

I wouldn't volunteer...

You can coat it to make it less absorptive, and you can even treat the entire gel by flushing stuff through it.

Just guess for me... I just want a cube of it to play with though honestly :p

You could probably wrap your entire exhaust with granual impregnated duct tape.

I got a bunch of samples, should be here next week sometime. I guess when they make the blanket the mixture is actually hydrophobic, which is awesome for our application. They can also make exact blankets with given dimensions, I will set it up to fit a GT2860 with begi downpipe. Let you guys know how it goes.

I really worry about cooling. If you're adding heat inside an insulated box, it eventually hits any given temp you care to imagine. Maybe not tieing it shut on bottom, or building a small frame to space it out so that airflow can take the heat away out the bottom of the car - otherwise you're counting on the exhaust and conduction along the pipes to do it.

Well, we'll see. :-)

I think your looking at this the wrong way. THe heat is in the box, insulation does nothing but retard its transfer.

what about that big round hole at the back of your car where the heat gets out?

That's what I was saying - you're counting on the exhaust to take the heat out. I dunno, I guess it's not an issue, but it would seem the turbo would get even toastier.

At least the thermal stresses of rapid cooling should be removed. :-)