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      04-10-2008, 12:46 PM   #1
JuniorDee
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Carbon Fiber Driveshaft

Has anyone ever had a carbon fiber driveshaft on their previous cars? What were your opinions?

I contacted www.pstds.com and they said they can custom make a CF drive shaft in 2-3 weeks for ~$1000. You just need to take all the measurements that they require.

Since I have never read any negatives about it I just may follow through.
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      04-10-2008, 12:52 PM   #2
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OT question: why would you want a CF one? i imagine you'd want a heavy one, not a light one?
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      04-10-2008, 01:00 PM   #3
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Less weight means less rotational inertia = faster throttle response and acceleration
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      04-10-2008, 01:18 PM   #4
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Quote:
Originally Posted by jaybird124 View Post
Less weight means less rotational inertia = faster throttle response and acceleration

correct

essentially the ideal thing would be to lighten the entire drive train all the way to the tires. clutch, flywheel, light weight drive shaft, rotors, wheels, and tires.
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      04-10-2008, 01:24 PM   #5
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so why do people have heavier knobs?
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      04-11-2008, 08:11 AM   #6
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Quote:
Originally Posted by mantis View Post
so why do people have heavier knobs?
Makes for an easier throw. Once you get weight moving, it takes more to stop it. So once you start the shift, the knob helps put it in gear. I was shocked at how much difference a weighted knob made. And a weighted knob isn't rotating mass, so it has no effect on the rest of the drivetrain.
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      04-11-2008, 11:46 PM   #7
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LOL, a couple of the questions in here are sad.
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      04-12-2008, 12:25 AM   #8
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I am thinking about replacing my front and rear windows with CF. I believe it can save anywhere from 5 to 10 lbs
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      04-12-2008, 01:12 AM   #9
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Don't forget to replace the cylinders with CF as well.
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      04-12-2008, 07:40 AM   #10
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I just bought a set of CF tires...

Seriously, how much of a reduction in the moment of inertia of the driveshaft are we talking about by going CF and what is the significance of that in relation to the moment of inertia of the other rotating masses? I am pretty sure the M3 has a hollow shaft and they've done whatever they could have to keep "I" of the crankshaft low. Lighter wheels seem like a more obvious target to me rather than the shaft.
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      04-12-2008, 08:46 AM   #11
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My car will have CF valve stems. Less rotational inertia means better handling lol
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      04-12-2008, 11:28 AM   #12
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Quote:
Originally Posted by JuniorDee View Post
I contacted www.pstds.com and they said they can custom make a CF drive shaft in 2-3 weeks for ~$1000.

Since I have never read any negatives about it I just may follow through.
Isn't $1,000 the negative...
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      04-14-2008, 07:01 PM   #13
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Speaking of CF Driveshafts, Here is TazaM3 with his 1000hp
Turbo'ed E46 M3 with a Broken CF DriveShaft!

[u2b]<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/acME2-ElLGM&hl=en"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/acME2-ElLGM&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>[/u2b]
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E92 M3 ZCP- AW/FR w/Extended Leather) Packages: ZCP, 6MT, Fully Loaded
E46 M3 - AW/IR 6 Spd, Fully Loaded. 19'' BBS LM DBK, V-CSL C/F Bmpr, Botld, Diff, V-CSL Custum IR-CF Center Counsel, V-GTR Hood, Dixis Ti 76mm, Meisterschaft Ti Sec. 1&2, EvoSport Headers, CAI, D/A Chip, tck d/a, Alcantera Headliner with Imola Red Sttitching....
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      04-14-2008, 07:45 PM   #14
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And they think it is funny?
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      04-14-2008, 08:00 PM   #15
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Quote:
Originally Posted by lucid View Post
And they think it is funny?
Tell me about it!
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E92 M3 ZCP- AW/FR w/Extended Leather) Packages: ZCP, 6MT, Fully Loaded
E46 M3 - AW/IR 6 Spd, Fully Loaded. 19'' BBS LM DBK, V-CSL C/F Bmpr, Botld, Diff, V-CSL Custum IR-CF Center Counsel, V-GTR Hood, Dixis Ti 76mm, Meisterschaft Ti Sec. 1&2, EvoSport Headers, CAI, D/A Chip, tck d/a, Alcantera Headliner with Imola Red Sttitching....
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      04-14-2008, 09:59 PM   #16
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Can someone please post a link to the CF tyres, windows and pistons?

Thanks!
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      04-14-2008, 10:02 PM   #17
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Quote:
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And they think it is funny?
If you could piss away tens of thousands of dollars on the car like he has, you would laugh too.
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      04-14-2008, 10:13 PM   #18
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Quote:
Originally Posted by cowmoo32 View Post
If you could piss away tens of thousands of dollars on the car like he has, you would laugh too.
No, I wouldn't.
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      04-14-2008, 11:54 PM   #19
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I found it funny. L O L
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