David Buschur

iTrader: (53)

Hi all,

Last weekend we had the shootout and I asked Mike from AWD Motorsports to bring up a driveshaft with him for my car.

I was running the DEVO shaft on the car but they are out of business and the part is no longer available. It made sense to try something even lighter and that is current to everyone.

We pulled the car on the lift and took the DEVO shaft off complete with the stock front portion and the carrier bearings that were eliminated by doing that shaft and weighed the entire assembly. Weight came in at 27.9 pounds for the entire shaft from the t-case to the rear differential.

We then weighed the new complete AWD Motorsports unit. This is a stock front shaft with an upgraded lifetime warranty u-joint connected to the aluminum rear shaft. This came in at 26.1 pounds. I'll take the 1.8 pound loss. The shaft looks great, very good quality.

The installation is a breeze, just make sure you pay attention. The two halves are indexed and marked as they are balanced. Line up the two marks and put those two halves together. After that it's a simple replacement.

We also installed the Torque Solution carrier bearing bushings while we were at it, these come with the drive shaft from AWD Motorsports.

The car, if anything, is quieter now than it was before, which I wasn't expecting with the bushings.

One more thing, after removing my complete shaft from the car I donated it to Shawna and Emery from STM for Shawna's car. (ended up trading as Emery felt bad...haha) We took her stock complete shaft off the car and weighed it. I was shocked to see the weight of the stock shaft, it was a 38.1 pounds!!

For those of you looking to shed some weight, this is a good place to do it. We will now be carrying these or you can get them from AWD Motorsports.

It's got my stamp of approval on it for sure!

Here's a shot that Mike posted of the aluminum section only

SmurfZilla

iTrader: (33)

What performance gains will you get with this? Any draw backs at ALL for a DD?

David Buschur

iTrader: (53)

No negative effects from this, yes daily driving for sure.

Gains, I didn't dyno it but it has to gain some WHP because a change to just lightweight stock replacement rotors picked up about 7 whp.

Mellon Racing

iTrader: (38)

the dead weight savings is good and the fact that it's rotating mass means even more, very nice mod.

boomn29

iTrader: (47)

12lbs of rotating mass eh... hhmmm.

Assuming if this takes the abuse of drag racing, we can road/race it just fine too eh.

PATRICK B.

iTrader: (5)

If you were to have to choose between a set of c/o's like the D2's or this DS which would you prefer.

I know it would be wise to have both but i can only spare so much right now

TIA

FathouseFab

iTrader: (5)

Coilovers bro!

PATRICK B.

iTrader: (5)

Thanks man that's what i was thinking as well but was just wondering what Dave's opinion was

I told Mike@AWD that when i got the funds from the AEM that i would pick up a set of c/o's and the money is ready but just trying to decide where to spend it properly.

Which c/o's do you run by the way? PM me as i don't want to take this too far OT.

03whitegsr

iTrader: (8)

Just some random numbers I came up with while doing my own 2-piece shaft.

60mm 2mm wall 1020 tube (stock)
Moment of inertia (12" length) = 9.43 kg/m^4
Torsional Stiffness = 103kN-m/rad
Failure Torque = 4243 N-m


3" 0.125 wall aluminum tube
Moment of inertia (12" length) = 8.01E-04 kg/m^4
torsional Stiffness = 82kN-m/rad
Failure Torque = 7048 N-m


2.5" 0.083 wall 4130 Chromoly steel tube
Moment of inertia (12" length) = 9.18E-04 kg/m^4
torsional Stiffness = 100kN-m/rad
Failure Torque = 5557 N-m


Larger diameter aluminum OWNS on all aspects...
Even though the actual weight is only 6% less, that aluminum shaft has about 12% less inertia then the steel DEVO shaft.
It will also absorb more of the driveline shock on a launch or hard shift.

EmeryatSTM

iTrader: (79)

We did a test on a 300 whp car a while back and saw about 10 whp all the way through. They are very nice drive shafts and we actually run the same part on the ricer. It works!
AWD motorsports!


-Em

itzwolf

iTrader: (9)

This is a for sure upgrade I will be doing after a few other things get squared away on my car. I've been eyeballing it for a long time now and strangely enough I was on STM's site looking at it the other day and that browser tab is still open

wizzo 8

iTrader: (35)

This is on my list of things to do but first Im working on getting a built bottom end before it blows

SLVRNBLK

iTrader: (169)

Have mine sitting in my garage

sho669

iTrader: (34)

[QUOTE=03whitegsr;8598116]Larger diameter aluminum OWNS on all aspects...
Even though the actual weight is only 6% less, that aluminum shaft has about 12% less inertia then the steel DEVO shaft.
It will also absorb more of the driveline shock on a launch or hard shift.[/QUOTE]

^+1 That is why I ordered mine should be here any day now. Looking forward to seeing it in person.

Laxman

iTrader: (5)

Definitely on the desired list!...but need to rebuild the trany/T-case first.