pamperedcar1

I cant say yet as im waiting for my dss axle shafts but I did also do RPS bc3, had rockland standard gear build me a tr6060 and added a eaton lsd diff. Should be on the road in two weeks and we will see how the dss shaft is.

0TJ@RPMtransmissions

In a manual transmission vette you need to get a carbon shaft. The car will shift much faster and easier with a lightweight carbon shaft.

DSS has an unlimited milage 1 year warranty. Not sure on the Pfadt shaft.

DSteck

Whatever you buy, get the RPM upgraded torque tube bearings. They're only $400 and a worthwhile "while I'm in there" change.

Pfadt Racing

We have our Carbon Fiber Driveshafts wound and the drive ends bonded by the same Mil Spec composites company. They specialize in lightweight carbon fiber tubes for various uses the US Military might have. They're definitely strong enough to handle what a Corvette can put out.

We have a 1 year warranty against manufacturers defect on all of our parts. Our Carbon Driveshaft system has an excellent track record in the field and we're very confident that they can handle what ever you can throw at them!

iwantaz06now

DSteck....do I need the coupler and bearing kit from rpm? I thought these shafts already come with their own version specifically, designed for their shafts

0TJ@RPMtransmissions

I have the bearings too, they are great!

DSteck

The driveshaft should have it's own specific couplers. The bearings are not included, but should be replaced.

TJ from RPM has RPM parts in his car? NO WAY!

carlrx7

I have the Carbon Fiber shaft, if i had to do it again, id go with the upgraded poly couplers and aluminum shaft, too much of a NVH increase, and i have a slight vibration from 2k-2.5k. i even mic'd the shaft and its less than 3 thousandths runnout from center





Apparently that's not good enough, even though stock is 80 thousandths tolerance., but that's using rubber couplers.

If anyone wants to trade, LMK, straight up, DSS aluminum with poly couplers for mine.

-Carl

0TJ@RPMtransmissions

Crazy huh!?!?!

I'm not worried about NVH.... I have 2' headers, no cats, B&B bullets.... as well as Pfadt mounts with the stiffest poly bushings in them.... Because Racecar! Lol.

DSteck

Here's the Pfadt flex discs. No increased NVH for me. I also run the Pfadt engine and trans mounts.




Carl, I have a 3.5" DSS driveshaft just sitting here if you want a cheap one... I have solid aluminum couplers, so you'd still want to buy the poly ones.








2 foot headers? Holy ish!

carlrx7

I'd need a non drilled input/output shaft, will wait till someone wants to trade. ive gotten r2ing the tt down to about 5 hours on jackstands.

I too have the Pfadt engine and trans mounts, along with the ECS brace and Pfadt spherical bearings, thing is a vibration nightmare when it comes to standard road noise, but im use to that, the 2500 rpm vibration bothers me.

-Carl

0TJ@RPMtransmissions

I would bet its in the flywheel or the balancer. Seen it WAY too many times.

carlrx7

That could be a possibility but I changed the clutch and flywheel to a RPS street twin carbon about 1 year before changing the TT. and crank pulley was pinned when the supercharger was installed 2 years ago.

-Carl

DSteck

Non-drilled? Why?

LSOHOLIC

All of these questions are serious and not meant to be taken as a smartazz.....

1) Can anyone produce evidence of increased performance from switching to a CF DS ?? ET/MPH ??

2) Who is breaking the factory DS (not couplers) ?? And what rwhp is this becoming the norm ??

3) And it seems prices are all over the board between the several CF manufactures ??...why ?? $899-$2000...??

Shafts
1)PFADT
2)LG
3)Hinson
4)ECS
5)Driveshaft shop (DSS)
6)etc...

Couplers
1)OEM
2)Billet
3)Ti plates/flex disc (PFADT)
4)u-joints
5)a combination of some of these or a complete elimination of these
6)etc...


What are the specs of some of these CF shafts ??
1) weight ??
2) weight with coupler/design ??
3) wall thickness ??
4) O/D ??
5) run-out tolerance ?? V-block ??
6) how tightly do they hold their balance specs
7) etc....

Do some of the coupler designs have benefits as to the type of performance atmosphere the car will see ?? Road race, drag race etc...??

By looking at pictures of some of the drive shafts, it almost looks as if some of them are made by the same manufacture and vendor "A" puts their name on them and sells them as "theirs".?.? Like ACPT..

So if anyone in the "know" can shed some light on this subject, I would appreciate it.

And lastly.....if no one is breaking the $900 CF shaft and its "specs" are very close to the other manufactures specs....then why by the high-dollar unit ??



Thanks.................and FYI, I run a FP, 30 spline,T56 w/BC2....so I'm interested in this topic.

.

pamperedcar1

I believe any upgrade from stock with a high horsepower car is worth it. I've seen 3 drive shaft come out with the plastic disk melted off.

LSOHOLIC

Bump....for some specs and guy can make a decision on/from ??

What are the specs of some of these CF shafts ??
1) weight ??
2) weight with coupler/design ??
3) wall thickness ??
4) O/D ??
5) run-out tolerance ?? V-block ??
6) how tightly do they hold their balance specs
7) etc....



Thanks...........this is race to build a competent driveline, not a race to see who can spend the most $$

.

LSOHOLIC

Anyone have the O/D of the tube and weight of the DSS CF drive shaft ??

Thanks............

iwantaz06now

You should call the drive shaft companies. They are very helpfull

LSOHOLIC

LOL....I tried, Frank was busy all day....but I did talk to PFADT.

Just trying to gather facts and run some numbers vs the stock shaft.

Thanks...........