Has anyone made a carbon fiber airintake for a h22a prelude or knows where i can get one? I also wondering what other engine parts people have made out of carbon fiber? Is it possible to make a airintake manifold out of carbon fiber i dont know if it gets to hot in there for one to be made?

 

you should def. search. the only carbon intake mani i know of is the AIR/Endyn mani it costs 1400 bucks but performs well. As for the intake try ebay. And why do you want everything carbon fiber, i am guessing for asthetics and not weight...

 

i like the look of carbon but i dont think it would be much of a wieght loss.

 

you're going to be paying out the *** just to get overlays then... if i were you i wouldlearn how to use composits and do it yourself,save some money...

 

i have worked with fiberglass i am pretty sure its the same. As for design i would need some moldings to make the parts i want.

 

people also forget the strength properties of carbon fiber not just for the weight, granted a ViS hood is definatlly not made for strength but if you manufacture it right with the right materials and laying the fabric in certain directions then it is stronger then steel by weight

 

you really cant lay c/f to make it as strong as steel in all directions, the only way c/f weave is as strong or stronger than steel is on 2 axis, not 3 like steel... Not to mention the compressive ability of most composites is very poor

 

they have done tests at dupont that have tested carbon fiber 3 times stronger then steel by weight and kevlar 10 times stronger then steel. I have the site study somewhere.

 

but again it is all on how you make it and the matrix of rsins you use. the more resin that is in it the weaker it is. But I really don't know much about the axis

 

you are talking about tensile strength when it is stronger than steel. c/f and kevlar are only strong in tension, not compression. If you form the c/f/kevlar in sheets or in a crosshatch fabric, the actual fibers run in 2 directions and it will be extremely strong in those directions. However if a force is placed to either compres or push on a c/f or kevlar sheet vertically there is no resistance or strength other than the resin. This is why hoods and such will buckle with a front end impact, because of the force applied is in compression of the tensile axis.

Steel on the other hand since it is made of a grain structure and not long chains, it has around the same strength in compression as in tension.

 

all be damned! good info!

 

The major advantage of fiberous composite materials is that you can engineer the part to have the strength you require in the direction you require. I see it as pro and not a con.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">you really cant lay c/f to make it as strong as steel in all directions, the only way c/f weave is as strong or stronger than steel is on 2 axis, not 3 like steel... [</TD></TR></TABLE>


There's two parts of a composite material:

The reinforcement(fiberglass,aramid,carbon,SiC...)
The matrix(epoxy,PEEK,aluminum...)


To change the compressive strength, you really have to change the matrix. There's no reason why you can't use a metal matrix when needed. So to say the compressive ability of most composites (you would use) while not inaccurate, doesn't explain the nature of composites well to people.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Not to mention the compressive ability of most composites is very poor</TD></TR></TABLE>

 

but we are talking about carbon fiber and carbon fiber parts. I understand a composite can be made from any material. I should have been more specific when i said composites. We arent talking about concrete (composite), or many other things.

In terms of c/f you cannot orient the fibers efficiantly enough to make a material that is strong in all directions such as steel, even if you have a resin with a steel or metal particulate. This i am refering to what was said earlier about a vis hood, it doesnt matter the which hood it is...

 

I'm not saying you have no clue what you're talking about. It's clear that you do. You actually remind me of my MatE major friend from college that HATED composite materials.

but anyway

You can "Z-Pin" carbon fiber composites so it is strong in whatever direction you want it to be. Check out F1 roll hoop construction.

And you can orient short fibers in random directions so it is strong in all directions like a steel.

VIS just chose to construct the hood they way they did. Probably for cost and looks.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">but we are talking about carbon fiber and carbon fiber parts. I understand a composite can be made from any material. I should have been more specific when i said composites. We arent talking about concrete (composite), or many other things.

In terms of c/f you cannot orient the fibers efficiantly enough to make a material that is strong in all directions such as steel, even if you have a resin with a steel or metal particulate. This i am refering to what was said earlier about a vis hood, it doesnt matter th

e which hood it is...</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eHoward &raquo;</TD></TR><TR><TD CLASS="quote">I'm not saying you have no clue what you're talking about. It's clear that you do. You actually remind me of my MatE major friend from college that HATED composite materials.

but anyway

You can "Z-Pin" carbon fiber composites so it is strong in whatever direction you want it to be. Check out F1 roll hoop construction.

And you can orient short fibers in random directions so it is strong in all directions like a steel.

VIS just chose to construct the hood they way they did. Probably for cost and looks.

</TD></TR></TABLE>

i agree, but 99.99% of the people on here are not going to use c/f in a random orientation because it looks like black fiberglass lol, i built a bridge out of c/f and fiberglass and we used the "Z pin" inbetween the load points so it wouldnt shear. Its just not as easy to make a something extremely thin like that, or in my experience it isnt.

People confuse composites so much and think they are just c/f or kevlar, i personally would make a hood out of honeycombed fiberglass lol.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">
i personally would make a hood out of honeycombed fiberglass lol.</TD></TR></TABLE>

why can't they all, haha

 

Ehoward- Great Info!!! I have some cool studies that were made by some universitys and also toray did a good study. I will find them and post them

 

I don't understand why more people don't utilize core materials.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soccerking3000 &raquo;</TD></TR><TR><TD CLASS="quote">
i personally would make a hood out of honeycombed fiberglass lol.</TD></TR></TABLE>

 

what thickness are you using for hoods? I have used it plenty but my suppliers only stock thicker stuff.

 

1/8 inch.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by carbonall &raquo;</TD></TR><TR><TD CLASS="quote">what thickness are you using for hoods? I have used it plenty but my suppliers only stock thicker stuff.</TD></TR></TABLE>

 

http://trickengineering.com/ (fibertuned.com)

on this site is a h22 intake manifold out of carbonfiber that i have seen the prototype of and they do not overlay it.

they are located in new hampshire