It's time to replace the stock setup, my APS TT is up and running smoothly and producing awesome power. Now where can I get an ATS twin plate Carbon clutch it's a 1300kg clamping force type with the soft sprung centre. I'd like to get one in a hurry as I have a friend in Seattle for the next two weeks and is flying home a brand new Boeing Jumbo for Quantas (he's a test pilot for the airline)and he has agreed to bring it back with him so any idea's where I can source one quickly.

David

 

Talk to Adam at Z1..they sell them.

Good choice, its the clutch I will putting in my car once the engine comes out.

Not sure if I will go triple carbon or dual carbon. From everything I have research, both setups have stock-like engagement..and made clamping force that gets even better when its hot.

http://z1auto.com/prodmore.asp?model...ine&prodid=669

 

Oh yea, isnt this the same clutch Mike ran on his custom TT setup?

 

yep, same clutch. I drove the car with this clutch, and it will be my next clutch as well. I am waiting, though as the Clutchmaster is holding up fine.

 

Do I smell another group buy?

 

The Best and fastest way to get the clutch is to call ATS directly....
They actually make the clutches in Japan and ship them to you from there... It only took me 4 days to get my clutch...
contact information A-T-S-USA.com the guys name is yasou he's a really good guy....

 

oh dear....LOL..I will make some calls.

 

I looked into pricing of this clutch as well, to me it seems like the best one out there capable of handling extremely high HP numbers while still retaing a stock feeling.

If you are thinking about doing a possible GB. Also look into getting a GB for their new Carbon LSD that just came out this month. I am interested in both these items.

 

Was consdidering ATS also ;however, the RPS twin carbon looks very promiseing. The RPS is fully warrantied , an has all 100%rebuildable Carbon surfaces. The base ATS has Carbon-Metal interfaces , not covered by warranty.

 

The discs are carbon/carbon/carbon. What are the "carbon-metal" interfaces are you refering to? And in terms of warranty, I wouldnt worry. Full Carbon clutches will be the last clutch you ever buy....they are almost indestrutable.

I like the RPS too, but when it priced it out, it was rediculously expensive for what you got. The ATS seems very simliar to the Exedy twin and tripple disc carbon, but about $500-$700 cheaper.

 

Comparo:

http://www.a-t-s-usa.com/ats-product...s-carbon.shtml
vs.
http://www.turboclutch.com/ccarbon.html


The basic ATS flywheel and intermediate surfaces are not segmented and the stack has alternateing carbon to metal contacts.

The RPS flywheel and pressure plate uses segmented carbon pucks that are 100% replaceable. But this design does add a few $100 to the up front setup.

It also appears that the RPS provides more holding power with less pedal effort due to the all carbon to carbon contact points.
Note: You can order a full carbon version of the ATS "CCM option" but it to adds a few $100 more and is still an un-segmented design.

I have been told that the RPS twin has a slightly softer than OEM pedal feel and will still hold 1000bhp. The ATS needs to add about 50% additional pedal pressure to hold about the same power. Of course none of our current builds will ever see much above 800crank. TO get a softer pedal with similar holding on the ATS requires either the CCM option on a twin or a soft triple.

Note ,the VQ35 RPS carbon-carbon won't be shipping for ~2months.

Lorca@Z1 seems to swear by the RPS Carbon-carbon , at least on VG30s. Downside is mostly cost.

Either way all these clutches are creme of the crop.

 

if given the choice though ebtween a puck style and full radius, full radius all the way...much smoother engagement and none of the chatter than a puck disk will give

The ATS pedal effort is not 50% stiffer than stock by any means. In fact the nature of a multi disk clutch is the fact that you can have stock or near stock pedal effort with vastly improved grip because you have more friction surface to work with

ATS disks are also replaceable though we have yet to have to sell a single one

Agreed though that both are fantastic units

adam

 

Thanks all for the feedback, has anyone had experience with the new Exedy Twin Carbon Disc clutch, ie: feel, pedal pressure compared to stock and how much torque/power will it take.

David

 

A few points.
I guess me calling the RPS disks "pucks" was not totally correct. The Carbon pads are "segmented". Basically operate similar to a full radius with fewer heat expansion issues. Of course this is more of an an issue with repeated drag launches since (drag launches warp iron parts). Note: ATS recommends a triple configuration for drag applications.

I've been told by a few shops that the RPS CC at least on a VG30 is very OEM-like smooth, not grabby like a race-puck design.

From the ATS USA website , in order to obtain a roughly similar equivalent of the RPS@1~1000hp I would target an ATS@ 900hp holding capacity , in a double carbon configuration (no CCM, non- soft type) a "1350kg" clamping force is recommended. In order to get a stock pedal feel at this level of hold ,it appears a triple would be needed.

So, on a VQ35 how much stiffer is the pedal , over OEM when a 1350kg double clamper is used?

 

The triple disk with the $1350kg pressure plate will likely be 50% stiffer than stock. I was thinking that I could acheive my goals by going triple disk, but using the lighter pressure plate...no?

 

The ATS I was (am) considering is the triple disk , 1100kg , in the "Soft" version. This is rated at 800hp , which for all practical puposes is as far as I ever plan to push and pretty much the max side of the APS TTs. This arrangement would yield the quietest , most streetable arrangement I beleive and be easiest on drivetrain.

But then again there are many aspects of the RPS CC design I like as well. Though I do feel it is far more than I need, I don;t drag the car that often.

Funny : Z1 in NY has one opinion and Z1 in Ga has another.

 

There is no BEST option. There LOTS of excellent options. So each shop has their own preference, based on what has worked for them in the past...what they sell...what they can make the highest margins off of.

I doesnt make one unit better or worse than the other. When you are talking ultra-high end parts.....they are all top quality.

 

I mainly like the idea that these clutches are not so grabby and harsh that our stock trannys dont have to take a massive load of shock any longer.

 

With that "least harsh" aspect in mind the ATS triple carbon "soft" seems to be well suited. I jsut wish I could drive one first.

 

Thats another 500 bones though , plus my shop already ordered mine.