ATS twin plate vs Os giken twin disk

Rusty · 08-31-2017, 03:34 PM

Quote:

Originally Posted by Elmo370z

I have no money. You're the one building a race, has a motor home, owns a ten story house. I'm over living under a cardboard box and eating can chicken noodle soup

I'm retired and on fixed income.

Rusty · 08-31-2017, 03:44 PM

Quote:

Originally Posted by phunk

I have owned both. I liked my twin carbon ATS/Carbonetics better than my twin OSG. When at typical operating temps, it drove like a stock clutch. When you heated it up, it got grabby like a racing clutch. Downside to carbon is that if you failed to warm it up before racing (high power application), it might slip under full power. So when it mattered, I would warm it up first. If I had the triple carbon rather than twin, it most likely would have held the power without having to heat it up first. It seemed like I was right on the edge of what the twin could do at normal operating temps.

My experience with a twin OSG in my own car, and a triple in a friends car. Great quality and longevity. But as for drive-ability on the street... Well you wont have to ever worry about hiding your keys... the average driver will not be able to make it out of the driveway with that clutch. It wasnt even tolerable (for street/daily use) before adding the adjustable fulcrum pedal from RJM. Even then with years of daily experience driving it, I would still stall it every few days. That is a racing clutch, and it drives like one.

The OS sounds like some of the set-ups I had when I had in my Trans-Am, and 440 Dart. Left leg was bigger then the right leg.

phunk · 08-31-2017, 03:48 PM

The pedal effort of the OSG is no problem at all, its similar to a stock clutch. Its the resolution of control you get within the swing of the pedal that makes it difficult to drive. Fully engaged and fully released feels like its about 1/4" apart. I am sure its more, but thats how it feels. To push the clutch pedal enough to feel any hydraulic resistance at all, and you are pretty much disengaged at that point.

This is just my experience, and its possible that different slave cylinder arrangements could drive much differently (should their displacement and travel ratio be different than mine was).

Elmo370z · 08-31-2017, 05:21 PM

Quote:

Originally Posted by phunk

I have owned both. I liked my twin carbon ATS/Carbonetics better than my twin OSG. When at typical operating temps, it drove like a stock clutch. When you heated it up, it got grabby like a racing clutch. Downside to carbon is that if you failed to warm it up before racing (high power application), it might slip under full power. So when it mattered, I would warm it up first. If I had the triple carbon rather than twin, it most likely would have held the power without having to heat it up first. It seemed like I was right on the edge of what the twin could do at normal operating temps.

My experience with a twin OSG in my own car, and a triple in a friends car. Great quality and longevity. But as for drive-ability on the street... Well you wont have to ever worry about hiding your keys... the average driver will not be able to make it out of the driveway with that clutch. It wasnt even tolerable (for street/daily use) before adding the adjustable fulcrum pedal from RJM. Even then with years of daily experience driving it, I would still stall it every few days. That is a racing clutch, and it drives like one.

Thank you. The answer I was looking for. Fuel rails whenever you get a batch

phunk · 08-31-2017, 05:32 PM

Quote:

Originally Posted by Elmo370z

Thank you. The answer I was looking for. Fuel rails whenever you get a batch

Cutting as I type this! They will be done by Monday then off for anodizing next week.

Optimiser · 08-31-2017, 06:17 PM

Quote:

Originally Posted by AlWakRa

I will be going for OS giken GT single hard cover, it will be an option if you don't want to boost your car. I don't want to go through the on/off feel of twin plates.

I haven't noticed any particular "on/off" feel of the twin plate that you mention. It's obviously firmer to depress the clutch pedal, but other than that it feels like using a "normal" clutch to me.

Optimiser · 08-31-2017, 06:25 PM

Quote:

Originally Posted by Rusty

What's the difference between the hard and soft cover?

The soft cover gives less clamping force than the hard cover, but I have no issues with any slippage using the soft cover with twin plate with a supercharged 450WHP. With the soft cover it's not as hard to depress the clutch pedal as it would be with the hard cover, that's the reason I went with a soft cover. I had no issues with it on the track either.

Optimiser · 08-31-2017, 06:40 PM

Quote:

Originally Posted by phunk

I have owned both. I liked my twin carbon ATS/Carbonetics better than my twin OSG. When at typical operating temps, it drove like a stock clutch. When you heated it up, it got grabby like a racing clutch. Downside to carbon is that if you failed to warm it up before racing (high power application), it might slip under full power. So when it mattered, I would warm it up first. If I had the triple carbon rather than twin, it most likely would have held the power without having to heat it up first. It seemed like I was right on the edge of what the twin could do at normal operating temps.

My experience with a twin OSG in my own car, and a triple in a friends car. Great quality and longevity. But as for drive-ability on the street... Well you wont have to ever worry about hiding your keys... the average driver will not be able to make it out of the driveway with that clutch. It wasnt even tolerable (for street/daily use) before adding the adjustable fulcrum pedal from RJM. Even then with years of daily experience driving it, I would still stall it every few days. That is a racing clutch, and it drives like one.

I have no issues using the OSG twin plate/soft cover as a daily driver. I have stock clutch pedal and the Z Speed concentric slave cylinder.

Elmo370z · 08-31-2017, 08:47 PM

Quote:

Originally Posted by phunk

Cutting as I type this! They will be done by Monday then off for anodizing next week.

Sign me up

Juan@Fontana · 09-01-2017, 11:38 AM

we have installed many of both, i can say 100% OSGiken is the better made unit. drives better, feels better & manufacturing quality looks better.

AlWakRa · 09-01-2017, 06:00 PM

Quote:

Originally Posted by Optimiser

I haven't noticed any particular "on/off" feel of the twin plate that you mention. It's obviously firmer to depress the clutch pedal, but other than that it feels like using a "normal" clutch to me.

Maybe the GT in particular would be an exception. I have many who told me any multi plate clutch will be on/off. If I can find a car locally with GT soft cover to try I would reconsider going twin plate instead, but most people around here (over 7k miles away) don't know what brand they are using or which model

if the have aftermarket clutch

And sorry Elmo for hijacking the thread

phunk · 09-01-2017, 08:35 PM

A multiplate clutch doesnt mean it has to be an on/off feeling clutch. Each one can have its own characteristics.

As for the OSG appearing nicer quality than the ATS... Its been some years since I looked at my ATS and never held them side by side. But that clutch lasted me over 5 years before it started slipping, so I wouldnt worry too much about how pretty it looks inside the bell housing.

Quicksilvers · 09-01-2017, 10:26 PM

I already seen the ATS twin disk clutch is able to handle plenty of whp and street and track abuse. How much power do you plan on putting down op?

Spooler · 09-01-2017, 10:31 PM

Multi disk clutches always sound like a dang tractor at idle.

Elmo370z · 09-02-2017, 02:20 AM

Quote:

Originally Posted by phunk

A multiplate clutch doesnt mean it has to be an on/off feeling clutch. Each one can have its own characteristics.

As for the OSG appearing nicer quality than the ATS... Its been some years since I looked at my ATS and never held them side by side. But that clutch lasted me over 5 years before it started slipping, so I wouldnt worry too much about how pretty it looks inside the bell housing.

Im surprised to see people in this thread that are happy with the way the OSG drives. I guess to each their own. Everyone that drove my car hated it, and only a few of them were even really successful at it. Perhaps there is a different model than mine and my friends that drives nicer.

I agree my buddy has a twin OSG, when i drove it around the parking lot i was like WTF lol

08-31-2017, 03:48 PM	#18 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	The pedal effort of the OSG is no problem at all, its similar to a stock clutch. Its the resolution of control you get within the swing of the pedal that makes it difficult to drive. Fully engaged and fully released feels like its about 1/4" apart. I am sure its more, but thats how it feels. To push the clutch pedal enough to feel any hydraulic resistance at all, and you are pretty much disengaged at that point. This is just my experience, and its possible that different slave cylinder arrangements could drive much differently (should their displacement and travel ratio be different than mine was). andy_meng1024 and Rusty like this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph Last edited by phunk; 08-31-2017 at 03:52 PM.

09-01-2017, 11:38 AM	#25 (permalink)
Juan@Fontana Enthusiast Member Join Date: Nov 2013 Location: Fontana Posts: 315 Drives: Z32 Rep Power: 21	we have installed many of both, i can say 100% OSGiken is the better made unit. drives better, feels better & manufacturing quality looks better. Elmo370z likes this. __________________ Juan Vargas jvargas@fontananissan.com Motorsports Manager, Tech Support & EMS Specialist. https://www.nissanraceshop.com/wp-co...ite-Header.png

09-01-2017, 08:35 PM	#27 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	A multiplate clutch doesnt mean it has to be an on/off feeling clutch. Each one can have its own characteristics. As for the OSG appearing nicer quality than the ATS... Its been some years since I looked at my ATS and never held them side by side. But that clutch lasted me over 5 years before it started slipping, so I wouldnt worry too much about how pretty it looks inside the bell housing. Spooler likes this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph Last edited by phunk; 04-15-2018 at 11:36 PM.

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