Questions about Carbon Fiber
VR-4ever
Joined: Jul 2003
Posts: 11,708
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From: not in russia.
Re: Questions about Carbon Fiber
Originally Posted by Slimsta Jimsta
Well i'm in the process of doing a group research paper on carbon-fiber, and well the part i have to do is on the fabrication of it, and then how it's used on performance parts and the pro's/con's/reasons of it(such as a carbon fiber driveshaft like Jay has)
I'm having problems finding links, and it wouldn't suprise me at all if some of yall had info on it, or knew of links to where i could find the information. If you can help me out, that would rock.
Thanks guys
I'm having problems finding links, and it wouldn't suprise me at all if some of yall had info on it, or knew of links to where i could find the information. If you can help me out, that would rock.
Thanks guys
Originally Posted by www.pstds.com
Advantages of Carbon Fiber
* Lighter than steel or aluminum.
* Three times torsional strength of steel.
* Torsional spring rate allows better tire hook-up.
* Torsional spring rate allows smoother shifting.
* Less shock load to the differential.
* Eliminates or dampens high speed vibrations.
* Reduces transmission and differential breakage.
* Characteristics can be varied by changing the wind, angles or diameter. PST offers both steel and 7075 Billet Aluminum yokes.
* In drag racing applications - a better 60 Ft. time.
* ET's have been lowered in some cases by as much as .120.
* In stock car racing better control out of corners is the result of the torsional spring rate.
* In road racing smoother shifting and better durability of transmission and differential have been reported.
* Tested on Cobra's at 180 MPH on Dyno with no vibrations.
* A much greater safety factor - carbon fiber will return to a fiber and not create shrapnel under the car, as would aluminum or steel shafts.
* Lighter than steel or aluminum.
* Three times torsional strength of steel.
* Torsional spring rate allows better tire hook-up.
* Torsional spring rate allows smoother shifting.
* Less shock load to the differential.
* Eliminates or dampens high speed vibrations.
* Reduces transmission and differential breakage.
* Characteristics can be varied by changing the wind, angles or diameter. PST offers both steel and 7075 Billet Aluminum yokes.
* In drag racing applications - a better 60 Ft. time.
* ET's have been lowered in some cases by as much as .120.
* In stock car racing better control out of corners is the result of the torsional spring rate.
* In road racing smoother shifting and better durability of transmission and differential have been reported.
* Tested on Cobra's at 180 MPH on Dyno with no vibrations.
* A much greater safety factor - carbon fiber will return to a fiber and not create shrapnel under the car, as would aluminum or steel shafts.
Needs more poke.
Joined: Feb 2004
Posts: 6,413
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From: Brunswick, ME
Re: Questions about Carbon Fiber
Originally Posted by VR-4ever
For my application, going from a three peice steel driveshaft with two carrier bearings, to a one piece carbon fiber driveshaft (no carrier bearings), I saw 33 lbs of rotational weight reduction. Very noticable difference.
so your cars running now?
VR-4ever
Joined: Jul 2003
Posts: 11,708
Likes: 0
From: not in russia.
Re: Questions about Carbon Fiber
yessir.
Jimmy, Tiki240 pm'd me about some pictures for your project. I'm travelling at the moment, so here's what I have on my laptop.
Damn, that's it... hrmph.... I thought I had more pics of that on this computer... check www.pstds.com for more info and pics on carbon fiber used for rotational parts. But anyway, you can see the directional windings for resistance to whip.
Jimmy, Tiki240 pm'd me about some pictures for your project. I'm travelling at the moment, so here's what I have on my laptop.
Damn, that's it... hrmph.... I thought I had more pics of that on this computer... check www.pstds.com for more info and pics on carbon fiber used for rotational parts. But anyway, you can see the directional windings for resistance to whip.
Racetracks
Joined: Nov 2002
Posts: 15,668
Likes: 0
From: How long is a piece of string?
Re: Questions about Carbon Fiber
Continuing.. More off of the top of my head.
Carbon fiber makes a great chassis material because of the way it can be made. The same design considerations that work well in steel don't work for carbon, which actually works really well for optimizing strength vs. weight.
Just like carbon driveshafts, the direction that the fibers run can be optimized to give strength in a certain direction, so torsional stiffness, etc. can be maximixed.
Going back to drivetrain stuff, lots of suspension bits are made of carbon, like suspension A-arms and pushrods.
One thing you haven't touched on is carbon friction materials, like brakes and clutches. Carbon clutches work great because they actually have higher mu (friction coeff) the hotter they get, unlike organic or metallic friction materials that lose mu when they heat up. They also wear at pretty predictable rates because of this.
Carbon fiber makes a great chassis material because of the way it can be made. The same design considerations that work well in steel don't work for carbon, which actually works really well for optimizing strength vs. weight.
Just like carbon driveshafts, the direction that the fibers run can be optimized to give strength in a certain direction, so torsional stiffness, etc. can be maximixed.
Going back to drivetrain stuff, lots of suspension bits are made of carbon, like suspension A-arms and pushrods.
One thing you haven't touched on is carbon friction materials, like brakes and clutches. Carbon clutches work great because they actually have higher mu (friction coeff) the hotter they get, unlike organic or metallic friction materials that lose mu when they heat up. They also wear at pretty predictable rates because of this.
Cock of the Infinite
Joined: Nov 2002
Posts: 3,693
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From: yorktown
Re: Questions about Carbon Fiber
thanks for the help guys. lol i already wrote the outline and my part of the paper (the chassis parts). I guess yimmay is just gettin started but just from the things posted he shouldnt have a problem at all! Jimmay, ill get up with you tomorrow.
Thread Starter
Eat me.
Joined: May 2003
Posts: 13,799
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From: seven eleven plus the fo' six
Re: Questions about Carbon Fiber
Originally Posted by tiki240
thanks for the help guys. lol i already wrote the outline and my part of the paper (the chassis parts). I guess yimmay is just gettin started but just from the things posted he shouldnt have a problem at all! Jimmay, ill get up with you tomorrow.
I talked to leon, and he's gotten his part written also, so we'll be straight.
Does anyone have a broken c/f piece that they don't need and would like to donate for our presentation? haha
and thanks again for all the help
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