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Group Buy 2- Carbon Fiber Driveshaft from Driveshaft Shop

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Old May 15, 2018 | 10:08 PM
  #1  
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Group Buy 2- Carbon Fiber Driveshaft from Driveshaft Shop

Group Buy 2: DSS (Driveshaft Shop) Carbon Fiber Driveshaft for W204 C63 $1600.
http://www.driveshaftshop.com/import...piece-cv-shaft

Hey all. Frank at Driveshaft Shop gave the go ahead to offer a second round on last year’s Gb. I won’t sugarcoat it. Price is up $100 but with free shipping to continental US. Savings is about $250 total as the current retail price is $1785 plus shipping.

Previous GB language follows with permission from KJkidd:
Fellow forum members, I corresponded via email today with Frank, the owner of DSS. After a couple back-and-forths we came to an agreement: if we can get 10 forum members to purchase a carbon fiber driveshaft from DSS, the price will be $1,600 shipped
For questions regarding weight savings, it's minimal per the reports of the prior GB. Quoting RuckinAMG
OE- 27.35 lbs.
CF-26.4 lbs.
See original post here:
mbworld.org/forums/c63-amg-w204/662371-group-buy-dss-carbon-f
If you wish to add yourself to the list, please copy and paste the most recently updated list and add your name in the next slot. I'll go ahead and get us started here below. Please provide your MBWorld name as well as your first name and last initial. Once we get all 10 people, we'll need to call DSS individually and pay for our driveshafts in order for them to start production (which should take 4-5 weeks).

1. Crya
2. LSAMG

Last edited by Crya; May 23, 2018 at 08:30 AM. Reason: Update weight
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Old May 15, 2018 | 11:08 PM
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What's the weight of this CF drive shaft, and what is the weight of the stock piece? What kind of power and torque numbers is this unit rated for?

Thanks..
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Old May 15, 2018 | 11:39 PM
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Originally Posted by G_Money
What's the weight of this CF drive shaft, and what is the weight of the stock piece? What kind of power and torque numbers is this unit rated for?

Thanks..
Hey. Take a read of pages 7-9 in the above link. My understanding is the weight savings is small but the one piece construction makes a very noticeable difference. FYI I’m not associated with DSS. Just an enthusiast and wanted to organize any interest and try and get a better price. The prior GB thread is only 9 pages so you can get most info there. I’m personally not familiar with what the power numbers are.
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Old May 16, 2018 | 01:26 AM
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Originally Posted by Crya

Hey. Take a read of pages 7-9 in the above link. My understanding is the weight savings is small but the one piece construction makes a very noticeable difference. FYI I’m not associated with DSS. Just an enthusiast and wanted to organize any interest and try and get a better price. The prior GB thread is only 9 pages so you can get most info there. I’m personally not familiar with what the power numbers are.
I was on my phone and not trying to read through multiple pages of old forum posts. I just figured it would be conveneint to have all the specs in the first post or two so people can see it easily and help them better make their decisions. Things like weight savings, thickness, weave pattern of the CF, is it dry or wet, etc. I read it weighs 18 lbs, but I don't know what a stock drive shaft is weighing...
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Old May 16, 2018 | 06:58 AM
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...
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Old May 16, 2018 | 08:55 AM
  #6  
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I added weights reported from original post and have inquired with Frank about your cf questions.
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Old May 21, 2018 | 03:25 PM
  #7  
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Heard from Frank. Said he hasn't weighed a full unit yet. I think we have good data on actual weight. Re torque "the new 3.25 we will be using on this was destructive tested to 6657 lbs but broke the 300m stub before the tube."
Re wet or dry "its a wet build tube and needs to be for the wind"

Come on guys!
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Old May 22, 2018 | 01:57 PM
  #8  
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More info from Frank. Yes, the 3.25 references the diameter.
"we always are looking to improve our products. its what we do best so over the last 6-9 months we have been working with several designs and came up with a multi angle weave that allows for both high Critical speed and torsional strength, the 3.25 was actually being designed for the Hellcat platform as they have some clearance issues like the Benz, its a real tough tube that is not only strong but also has the hard resin outer core and a cover of fiberglass before the Carbon so its also durable"

I also received this info which I believe was from the original GB so here it is again:
Harmonics
You see the rubber bushings in a car are there to remove harmonics from the cabin, harmonics are caused by the engine firing in pulses and the firing turns the crank, but not smooth like an electric motor, it speeds up every time the spark plug ignites the fuel, this is why the engine has a harmonic damper on the front to kind of smooth this action. when you change from rubber to solid or poly mounts it will sometimes re-introduce the harmonic back in the cabin (the reason rubber is used is to make it quiet)i have been asking under scrutiny why a stock 2 piece will not do this as much as a single one and its simple. the center of the driveshaft that is supported but a by a real soft rubber hanger. its hiding this,shaft is still moving around but the rubber is soaking it up. put a solid rubber there and it would change this tremendously. its kind of masking but its still there, when you put a single shaft in there is nothing hiding the center moving around so its transferred to the ends (think of a tuning fork, hit one side and the other moves not because its out of balance but because a sound it being transmitted thru it) Hope this make sense

material and Harmonics
you are standing in front of (3) 48" long pieces of tube, all about 3.5" in diameter but one is steel, the next aluminum and the 3rd Carbon Fiber. You then pick up the steel on with your thumb and your index finger and strike the middle of the tube with a long screwdriver. The steel shaft will ring like a bell and continue until the harmonic being produced by the strike exhausts itself. You do the same with the Aluminum next, you will get a bit of ring but not as loud and will not hold for near as long. You then pick up the Carbon Fiber and strike it the same way as the others, it make a clack and stops almost immediately.

This affect is the same thing that happens when the motor if firing and pulsing the power from the explosions in each cylinder(this is what a Harminc damper trys to stop on the engine) This pulse along with the frequency coming out of the trans and the diff all collide in the hollow tube of a driveshaft, the material will either broadcast it or will not allot it to go any further. Think of a Tuning fork, hit one side and the other moves. Its not out of balance its being excited by the frequency being sent to it, the driveshaft does the same thing so balance is not to blame its harmonic, on the 2005+ mustang Ford had such a problem with this on the car they did a 2 piece driveshaft with (1) u-joint, a hanger bearing (2) CV's and a 9lb damper in the back shaft (talk about a
flywheel affect) this shaft weighs 46lbs and was used to stop the issue. other things like solid or poly mounts will make this even worse but thats a story for another day......


Carbon
Carbon is lighter but its not the real prominent thing it does. The carbon shaft would make the car more consistent with the 60ft times. and help lower them you see when the shaft starts to twist the each of the materials will wrap up. Steel/chromoly 5-7 degrees aluminum is about 20 degrees and Carbon 30 degrees, what the difference is the Carbon releases slowly and does not shock the tires, most see between .1 to .3 gain in the 60's.

Guibo/hanger issue with stock shaft
The stock shaft will have to start by putting the torque into the front Guibo and it
gives, then it moves down to the hanger that is very soft and will move up about .750" then back to the
rear guibo and compress that one, so by the time the torque goes thru the shaft its dampened allot to
the point of feeling soft or disconnected, by putting the single shaft in the car will be allot more responsive to
pedal/torque input. It will have a more athletic feel and be quicker due to the lack of the soft parts being
removed.

Dear DSS, I have some questions regarding your drive shafts.

1/ How do carbon fiber drive shafts cope with radiant heat from the exhaust system? Should a product such as this be used on the relevant section of the exhaust pipe?
the bonding of carbon will start to have issues at 300 degrees, if the exhaust is close wrapping it or shielding it will bring the number below this.



2/ How do cf shafts cope with stone chips and abrasions caused by gravel and other road debris?
our Carbon shafts actually have a outer layer of Fiberglass, this is done to ensure the surface of the carbon to be protected, its about .125 thick and
is very good at saving the shaft, if something were do dig thru it the shaft would be bad but also keep in mind if something were to do this to aluminum it would also ruin the shaft.


3/ Do cf drive shafts have a shelf life? That is, should they be replaced after a certain amount of time?
Heat is the only thing that will shorten the life, all shafts will have a fatigue cycle, Carbon is as high if not higher then Steel/Aluminum


4/ What is the advantage of a carbon fiber shaft over an aluminum shaft?
The biggest this is its ability to absorb harmonics and its torsion properties. you see all shafts will twist before a vehicle moves, steel about 7 degrees aluminum about 20 and carbon about 30. the difference is the others will come back like a spring and put reverse torque or time compounded stress on the shaft and the rest of the drivetrain. Carbon releases its energy over time and will help with either 60ft times in a drag car, coming out of a corner with a Drift,road race/rally or time attack car and it will also protect the drive train from harmful shock. The harmonic advantage is the fact that it will not amplify drivetrain drone or motor/trans harmonics like the other materials.
Reply
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Old May 23, 2018 | 08:31 AM
  #9  
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LSAMG is in and in on the list.
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Old May 23, 2018 | 09:26 AM
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Let's make this happen guys. The DSS Driveshaft plus the Mopar 3.06+ Gearing ..FTW
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Old Mar 18, 2019 | 08:22 AM
  #11  
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Originally Posted by Crya
More info from Frank. Yes, the 3.25 references the diameter.
"we always are looking to improve our products. its what we do best so over the last 6-9 months we have been working with several designs and came up with a multi angle weave that allows for both high Critical speed and torsional strength, the 3.25 was actually being designed for the Hellcat platform as they have some clearance issues like the Benz, its a real tough tube that is not only strong but also has the hard resin outer core and a cover of fiberglass before the Carbon so its also durable"

I also received this info which I believe was from the original GB so here it is again:
Harmonics
You see the rubber bushings in a car are there to remove harmonics from the cabin, harmonics are caused by the engine firing in pulses and the firing turns the crank, but not smooth like an electric motor, it speeds up every time the spark plug ignites the fuel, this is why the engine has a harmonic damper on the front to kind of smooth this action. when you change from rubber to solid or poly mounts it will sometimes re-introduce the harmonic back in the cabin (the reason rubber is used is to make it quiet)i have been asking under scrutiny why a stock 2 piece will not do this as much as a single one and its simple. the center of the driveshaft that is supported but a by a real soft rubber hanger. its hiding this,shaft is still moving around but the rubber is soaking it up. put a solid rubber there and it would change this tremendously. its kind of masking but its still there, when you put a single shaft in there is nothing hiding the center moving around so its transferred to the ends (think of a tuning fork, hit one side and the other moves not because its out of balance but because a sound it being transmitted thru it) Hope this make sense

material and Harmonics
you are standing in front of (3) 48" long pieces of tube, all about 3.5" in diameter but one is steel, the next aluminum and the 3rd Carbon Fiber. You then pick up the steel on with your thumb and your index finger and strike the middle of the tube with a long screwdriver. The steel shaft will ring like a bell and continue until the harmonic being produced by the strike exhausts itself. You do the same with the Aluminum next, you will get a bit of ring but not as loud and will not hold for near as long. You then pick up the Carbon Fiber and strike it the same way as the others, it make a clack and stops almost immediately.

This affect is the same thing that happens when the motor if firing and pulsing the power from the explosions in each cylinder(this is what a Harminc damper trys to stop on the engine) This pulse along with the frequency coming out of the trans and the diff all collide in the hollow tube of a driveshaft, the material will either broadcast it or will not allot it to go any further. Think of a Tuning fork, hit one side and the other moves. Its not out of balance its being excited by the frequency being sent to it, the driveshaft does the same thing so balance is not to blame its harmonic, on the 2005+ mustang Ford had such a problem with this on the car they did a 2 piece driveshaft with (1) u-joint, a hanger bearing (2) CV's and a 9lb damper in the back shaft (talk about a
flywheel affect) this shaft weighs 46lbs and was used to stop the issue. other things like solid or poly mounts will make this even worse but thats a story for another day......


Carbon
Carbon is lighter but its not the real prominent thing it does. The carbon shaft would make the car more consistent with the 60ft times. and help lower them you see when the shaft starts to twist the each of the materials will wrap up. Steel/chromoly 5-7 degrees aluminum is about 20 degrees and Carbon 30 degrees, what the difference is the Carbon releases slowly and does not shock the tires, most see between .1 to .3 gain in the 60's.

Guibo/hanger issue with stock shaft
The stock shaft will have to start by putting the torque into the front Guibo and it
gives, then it moves down to the hanger that is very soft and will move up about .750" then back to the
rear guibo and compress that one, so by the time the torque goes thru the shaft its dampened allot to
the point of feeling soft or disconnected, by putting the single shaft in the car will be allot more responsive to
pedal/torque input. It will have a more athletic feel and be quicker due to the lack of the soft parts being
removed.

Dear DSS, I have some questions regarding your drive shafts.

1/ How do carbon fiber drive shafts cope with radiant heat from the exhaust system? Should a product such as this be used on the relevant section of the exhaust pipe?
the bonding of carbon will start to have issues at 300 degrees, if the exhaust is close wrapping it or shielding it will bring the number below this.



2/ How do cf shafts cope with stone chips and abrasions caused by gravel and other road debris?
our Carbon shafts actually have a outer layer of Fiberglass, this is done to ensure the surface of the carbon to be protected, its about .125 thick and
is very good at saving the shaft, if something were do dig thru it the shaft would be bad but also keep in mind if something were to do this to aluminum it would also ruin the shaft.


3/ Do cf drive shafts have a shelf life? That is, should they be replaced after a certain amount of time?
Heat is the only thing that will shorten the life, all shafts will have a fatigue cycle, Carbon is as high if not higher then Steel/Aluminum


4/ What is the advantage of a carbon fiber shaft over an aluminum shaft?
The biggest this is its ability to absorb harmonics and its torsion properties. you see all shafts will twist before a vehicle moves, steel about 7 degrees aluminum about 20 and carbon about 30. the difference is the others will come back like a spring and put reverse torque or time compounded stress on the shaft and the rest of the drivetrain. Carbon releases its energy over time and will help with either 60ft times in a drag car, coming out of a corner with a Drift,road race/rally or time attack car and it will also protect the drive train from harmful shock. The harmonic advantage is the fact that it will not amplify drivetrain drone or motor/trans harmonics like the other materials.

Guys is this still available ... I am very interested
Matthew
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Old Mar 18, 2019 | 11:10 AM
  #12  
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What's the expected date for a cutoff on the group buy?

Waiting for year end to see if I have the extra cash available.
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Old Mar 18, 2019 | 11:24 AM
  #13  
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You guys realize this was over 10 months ago? The GB never happened, and other retailers out there in the interwebs sell the piece for less than what the manufacturer was offering at the time anyways. East Coast Euro mentioned a while back that they may sponsor a GB, but then there wasn't any follow-up.
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Old Mar 18, 2019 | 09:28 PM
  #14  
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Thanks for all of Crya's previous efforts

Those now interested - check out Race Consulting Agency. Highly recommend them for this DSS CF DS
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Old Mar 19, 2019 | 01:06 AM
  #15  
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C63 AMG
Originally Posted by MBNRG
Thanks for all of Crya's previous efforts

Those now interested - check out Race Consulting Agency. Highly recommend them for this DSS CF DS
Excellent, I have just emailed them.
I'll let you know how i go.
Just concerned ( a little ) on freight charges to Australia
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