ScienceofSpeed Twin Carbon Clutch & Flywheel
Thread Starter
Administrator
Joined: Oct 2000
Posts: 17,004
Likes: 7
From: Santa Cruz, CA, US
ScienceofSpeed Twin Carbon Clutch & Flywheel
For my 6th season of racing I've decided to have Shad at Driving Ambition build me a turbo. I've run the last few seasons on a supercharger setup with hp levels tipping 500hp last year. (See Video From Last Race 2009). Previously I was running the power thru a Toda Flywheel, 6puck sprung disc and act pressure plate. This held up ok for the SC and proved to be reliable, but with the turbo and the anticipated hp increase (up to 600hp) we knew we'd need a better clutch solution.
At that time Shad recommended the SoS solution and after comparing many options as1 it seemed to be the perfect solution and an amazing bang for the buck. See Clutch Here
I'm very excited to finally run a multi-plate clutch (and the new HP). I look forward to the 2010 SCCA Season Opener in 1.5 wks at Thunderhill 4/9-10.
I'll update this more with impressions, photos and info when the clutch goes in next week, hits the dyno and then after the race weekend.
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http://www.scienceofspeed.com/products/dri..._carbon_clutch/
At that time Shad recommended the SoS solution and after comparing many options as1 it seemed to be the perfect solution and an amazing bang for the buck. See Clutch Here
I'm very excited to finally run a multi-plate clutch (and the new HP). I look forward to the 2010 SCCA Season Opener in 1.5 wks at Thunderhill 4/9-10.
I'll update this more with impressions, photos and info when the clutch goes in next week, hits the dyno and then after the race weekend.
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The ScienceofSpeed Billet Twin Carbon Clutch & Flywheel is a revolutionary clutch for the S2000 for customers with high horsepower engines.
The typical clutch for the S2000 that is capable of holding over 400 wheel horsepower has been very difficult to drive. This is because in order to hold increased power, manufactures have had to greatly increase the coefficient of friction (making the clutch very difficult to engage) and produce a very high clamp load (making the clutch pedal very stiff). By making the car difficult to operate, these clutches affect an important interface of the driver to the car - ultimately taking away from the joy of driving the S2000.
By using true carbon-carbon discs in a multi-disc design, ScienceofSpeed has been able to take advantage of the unique properties of carbon-carbon discs to design a clutch that is easy to engage with a pedal effort that is close to stock.
The ScienceofSpeed Billet Twin Carbon clutch is the only true carbon-carbon clutch designed for the S2000. Other clutches, even multi-plate clutches, are still difficult to drive because the high friction discs used.
carbon-carbon friction liners:
The clutch is made up of two discs, a pressure plate, mid plate, and flywheel. This design uses six carbon-carbon lined surfaces and one Kevlar-organic liner to increase the smooth engagement of the clutch. The carbon-carbon friction liners are developed under pressure and heat for six months to develop a near pure carbon-carbon structure. The carbon-carbon discs allows the clutch to hold high load while offering smooth engagement and long life.
lightweight twin disc design:
The twin disc design results in a very high surface area in a compact design with the mass centered in the clutch for fast engine response. This compact design results in a low moment of inertia - and an overall lighter weight - 24.5 lbs. The clutch pressure plate is designed to captivate the floating mid plate. Like other floating mid plate clutches, a faint noise is heard when the clutch pedal is depressed. Unlike others however, this design uses the aluminum pressure plate rather than the steel flywheel to captivate the floater. The result is a decrease in noise and a much lighter assembly.
light pedal effort & smooth engagement:
Thanks to the properties of the carbon-carbon liners, a much lower clamp load is required of the pressure plate to hold the power. This results in a very stock-like pedal pressure making the clutch easy to drive on both the street in stop and go traffic or at the track. It also results in less wear and tear to the engine's thrust washer bearings.
high power capacity:
The ScienceofSpeed Billet Twin Carbon Clutch is rated to 700 ft/lb of torque at the wheels - torque which would be typical of a 900+ hp S2000. The clutch is of course equally of handling anything between this and completely stock power.
high technology & build quality:
Each ScienceofSpeed Billet Twin Carbon Clutch is pinned and balanced after assembly for a precision fit . In addition, the high strength pressure plate design eliminates tension straps for best reliability.
factory fitment:
The ScienceofSpeed Billet Twin Carbon clutch is designed to work with the factory slave cylinder and transmission and requires no modifications for installation. Both release and pilot clutch bearings are included with the clutch.
The typical clutch for the S2000 that is capable of holding over 400 wheel horsepower has been very difficult to drive. This is because in order to hold increased power, manufactures have had to greatly increase the coefficient of friction (making the clutch very difficult to engage) and produce a very high clamp load (making the clutch pedal very stiff). By making the car difficult to operate, these clutches affect an important interface of the driver to the car - ultimately taking away from the joy of driving the S2000.
By using true carbon-carbon discs in a multi-disc design, ScienceofSpeed has been able to take advantage of the unique properties of carbon-carbon discs to design a clutch that is easy to engage with a pedal effort that is close to stock.
The ScienceofSpeed Billet Twin Carbon clutch is the only true carbon-carbon clutch designed for the S2000. Other clutches, even multi-plate clutches, are still difficult to drive because the high friction discs used.
carbon-carbon friction liners:
The clutch is made up of two discs, a pressure plate, mid plate, and flywheel. This design uses six carbon-carbon lined surfaces and one Kevlar-organic liner to increase the smooth engagement of the clutch. The carbon-carbon friction liners are developed under pressure and heat for six months to develop a near pure carbon-carbon structure. The carbon-carbon discs allows the clutch to hold high load while offering smooth engagement and long life.
lightweight twin disc design:
The twin disc design results in a very high surface area in a compact design with the mass centered in the clutch for fast engine response. This compact design results in a low moment of inertia - and an overall lighter weight - 24.5 lbs. The clutch pressure plate is designed to captivate the floating mid plate. Like other floating mid plate clutches, a faint noise is heard when the clutch pedal is depressed. Unlike others however, this design uses the aluminum pressure plate rather than the steel flywheel to captivate the floater. The result is a decrease in noise and a much lighter assembly.
light pedal effort & smooth engagement:
Thanks to the properties of the carbon-carbon liners, a much lower clamp load is required of the pressure plate to hold the power. This results in a very stock-like pedal pressure making the clutch easy to drive on both the street in stop and go traffic or at the track. It also results in less wear and tear to the engine's thrust washer bearings.
high power capacity:
The ScienceofSpeed Billet Twin Carbon Clutch is rated to 700 ft/lb of torque at the wheels - torque which would be typical of a 900+ hp S2000. The clutch is of course equally of handling anything between this and completely stock power.
high technology & build quality:
Each ScienceofSpeed Billet Twin Carbon Clutch is pinned and balanced after assembly for a precision fit . In addition, the high strength pressure plate design eliminates tension straps for best reliability.
factory fitment:
The ScienceofSpeed Billet Twin Carbon clutch is designed to work with the factory slave cylinder and transmission and requires no modifications for installation. Both release and pilot clutch bearings are included with the clutch.
Thread Starter
Administrator
Joined: Oct 2000
Posts: 17,004
Likes: 7
From: Santa Cruz, CA, US
Review #1:
Sorry when Driving Ambition installed the clutch they didn't take and pics. But it looks just like you expect.... Car has 540hp and 19psi....
My first race weekend we had some tuning problems so I only got a few sessions in and 1 was in the pouring rain but this clutch is awesome. Drives like an oem but is holding way over 500hp without any problems. The only complaint I have about the item is that since my car isn't ever driven on the street would be that there were less material on the plates to lower the weight more. But for everyone else that extra material is a great thing. Lets it drive like oem and the clutch should last forever. I didn't weigh what my toda fw/act setup weighed but I think this might be a tiny bit more than that setup, but still lighter than stock.
Oh yeah I love the clutch rattle (I'm serious) when the clutch is in. Sounds like I'm driving a motorcycle, and the multiplate noise always sounds great to me. I could see this bothering some people some, but you're not gonna find a multiplate that doesn't do it and you can always put the car in neutral and let the clutch out to shut it up. Also its hard on the crank to sit around for long periods of time with the clutch in.
I'll post more after Laguna in 1.5 weeks.
Thanks!
-Ry
Sorry when Driving Ambition installed the clutch they didn't take and pics. But it looks just like you expect.... Car has 540hp and 19psi....
My first race weekend we had some tuning problems so I only got a few sessions in and 1 was in the pouring rain but this clutch is awesome. Drives like an oem but is holding way over 500hp without any problems. The only complaint I have about the item is that since my car isn't ever driven on the street would be that there were less material on the plates to lower the weight more. But for everyone else that extra material is a great thing. Lets it drive like oem and the clutch should last forever. I didn't weigh what my toda fw/act setup weighed but I think this might be a tiny bit more than that setup, but still lighter than stock.
Oh yeah I love the clutch rattle (I'm serious) when the clutch is in. Sounds like I'm driving a motorcycle, and the multiplate noise always sounds great to me. I could see this bothering some people some, but you're not gonna find a multiplate that doesn't do it and you can always put the car in neutral and let the clutch out to shut it up. Also its hard on the crank to sit around for long periods of time with the clutch in.
I'll post more after Laguna in 1.5 weeks.
Thanks!
-Ry
Registered User
Joined: Sep 2006
Posts: 1,604
Likes: 0
From: San Mateo, Ca
Really looking forward to your review of the clutch. I'm looking into buying one in anticipation of replacing the CC stage 4 I'm running now. Keep us updated on both your turbo build and the clutch review!
