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SpeedSport Single Carbon-Carbon Clutch

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Old Jul 31, 2015 | 10:58 AM
  #16  
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Originally Posted by Erik@MIL.SPEC
Really? I missed that. I didn't see one on the discs.

ALso, how much louder would the aluminum flywheel be?

I need to talk to them about weights. I'll call them today and update here. Their office is literally like 10 minutes away.
Don't do an aluminum flywheel. Lightweight flywheels suck for drivability.

Stop by their office and get a picture of one of their clutches.
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Old Jul 31, 2015 | 11:50 AM
  #17  
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Originally Posted by 94AWDcoupe
another cool feature on these clutches is the TOB is machined for a square ring. the TOB cannot pop out. you do have to unbolt pressure plate from fly to drop the trans. the ring can only be undone from backside.
F!ck that...
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Old Jul 31, 2015 | 11:55 AM
  #18  
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^Wow I mean I get why they did that but what a PITA! Thanks but no thanks...
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Old Jul 31, 2015 | 12:16 PM
  #19  
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Originally Posted by heel2toe
^Wow I mean I get why they did that but what a PITA! Thanks but no thanks...
maybe you should not be working on cars? its quite easy to do. same as unbolting a torque converter when dropping auto trans. the way most "shouldnt be machanics" struggle with getting clip undone unbolting 6 bolts may be faster anyways.

few years back a guy called me up for help getting the trans separated from engine after he pulled setupo from car. . he said him and his buddy spent three consecutive nights, twelve hours trying to get trans off engine. when I got there the trans housing was broken from all the heavy duty prying that went down. took me ten minutes to take the six bolts off exedy twin. they were embarrassed to say the least.
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Old Jul 31, 2015 | 12:20 PM
  #20  
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Originally Posted by 94AWDcoupe
maybe you should not be working on cars? its quite easy to do. same as unbolting a torque converter when dropping auto trans. the way most "shouldnt be machanics" struggle with getting clip undone unbolting 6 bolts may be faster anyways.

few years back a guy called me up for help getting the trans separated from engine after he pulled setupo from car. . he said him and his buddy spent three consecutive nights, twelve hours trying to get trans off engine. when I got there the trans housing was broken from all the heavy duty prying that went down. took me ten minutes to take the six bolts off exedy twin. they were embarrassed to say the least.

No, its totally different. Torque converter bolts are easily accessed either through the starter opening, or another access opening. The pressure plate bolts are on the other side of the flywheel. I don't see how you would get to them with the trans on the car. I don't think the access hole on the bottom of the bell housing is large enough to get tools in there.


And after looking at it, why do you assume it won't come apart like the OEM or monoloc setup?
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Old Jul 31, 2015 | 12:53 PM
  #21  
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I have used the RPS clutch. the clip does not pop out like the factory clip. its locked in and can only be taken apart from backside of pressure plate. there is plenty of access to get bolts off. have done this several times with RPS and other clutches.
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Old Jul 31, 2015 | 12:59 PM
  #22  
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Originally Posted by 94AWDcoupe
maybe you should not be working on cars? its quite easy to do. same as unbolting a torque converter when dropping auto trans. the way most "shouldnt be machanics" struggle with getting clip undone unbolting 6 bolts may be faster anyways.

few years back a guy called me up for help getting the trans separated from engine after he pulled setupo from car. . he said him and his buddy spent three consecutive nights, twelve hours trying to get trans off engine. when I got there the trans housing was broken from all the heavy duty prying that went down. took me ten minutes to take the six bolts off exedy twin. they were embarrassed to say the least.
that's a good one!

I didn't say that I wasn't able to to it. What I said is that it's a PITA and a waste of time and effort. Popping off the TOB is simple and takes literally

Last edited by heel2toe; Jul 31, 2015 at 01:16 PM.
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Old Jul 31, 2015 | 01:03 PM
  #23  
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**Delete something is f'ed with evom and my post keeps getting cut off!
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Old Jul 31, 2015 | 05:31 PM
  #24  
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i just got off the phone with rj at speed sport. the single disk clutch comes in two basic categories - a non-carbon disk with sprung hub and carbon disk system with a solid hub. he says that a solid hub wont make an appreciable difference in noise. instead he attributes increased noise to lighter weight clutch assemblies. since their steel flywheel kit is not much lighter than stock, its not much louder than stock.

i learned a few other things about the clutch that i didn't realize from the website:

1) the carbon single is a full carbon-carbon system. four pucks attach to both the flywheel and pressure plate, and the disk is carbon faced.

2) the pressure plate has an integrated marcel spring that makes the clutch easier to modulate.

3) he doesn't discourage using it for drag racing. says it should hold up better than most.

4) pedal pressure is about 10% greater than stock.

5) the single carbon disk kit does not use a floating disk. its riveted to the hub.
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Old Jul 31, 2015 | 09:38 PM
  #25  
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Originally Posted by mrfred
i just got off the phone with rj at speed sport. the single disk clutch comes in two basic categories - a non-carbon disk with sprung hub and carbon disk system with a solid hub. he says that a solid hub wont make an appreciable difference in noise. instead he attributes increased noise to lighter weight clutch assemblies. since their steel flywheel kit is not much lighter than stock, its not much louder than stock.

i learned a few other things about the clutch that i didn't realize from the website:

1) the carbon single is a full carbon-carbon system. four pucks attach to both the flywheel and pressure plate, and the disk is carbon faced.

2) the pressure plate has an integrated marcel spring that makes the clutch easier to modulate.

3) he doesn't discourage using it for drag racing. says it should hold up better than most.

4) pedal pressure is about 10% greater than stock.

5) the single carbon disk kit does not use a floating disk. its riveted to the hub.
THanks Mychailo. For us non-engineers, can you explain the benefits of some of these?

For me, it's #2 and #5. With regards to #5, I'm assuming that prevents rattling?
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Old Aug 1, 2015 | 11:05 AM
  #26  
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Originally Posted by Erik@MIL.SPEC
THanks Mychailo. For us non-engineers, can you explain the benefits of some of these?

For me, it's #2 and #5. With regards to #5, I'm assuming that prevents rattling?
The marcel spring makes it easier to modulate the clutch because it adds some "give" to the assembly. Makes it less "on/off".

Nothing in particular about the riveted assembly. That's standard for unsprung single disk clutches. A floating disk on a hub might have more of tendency to rattle when the clutch is pressed.
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Old Nov 6, 2015 | 03:50 PM
  #27  
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So now you can get these clutches through MIL.SPEC.

RJ is a nice guy and we talked briefly about the clutch. One will be going in my car when she is ready.

https://www.evolutionm.net/forums/ev...pec-parts.html
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Old Nov 10, 2015 | 08:09 AM
  #28  
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Originally Posted by Erik@MIL.SPEC
So now you can get these clutches through MIL.SPEC.

RJ is a nice guy and we talked briefly about the clutch. One will be going in my car when she is ready.

https://www.evolutionm.net/forums/ev...pec-parts.html
Great to see someone I know and trust finally trying this brand. Will you be running the full carbon single with steel flywheel?
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Old Nov 10, 2015 | 11:00 AM
  #29  
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Originally Posted by mrfred
Great to see someone I know and trust finally trying this brand. Will you be running the full carbon single with steel flywheel?
Yup. I'll be running the carbon/carbon single with steel flywheel. RJ said the aluminum would be "dog box loud."

I asked him if we could get a steel flywheel that shaved a few pounds, and he said...maybe lol

Just shipped one to an EvoM member since his car will be done before mine.
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Old Nov 10, 2015 | 11:17 AM
  #30  
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Originally Posted by Erik@MIL.SPEC
Yup. I'll be running the carbon/carbon single with steel flywheel. RJ said the aluminum would be "dog box loud."

I asked him if we could get a steel flywheel that shaved a few pounds, and he said...maybe lol

Just shipped one to an EvoM member since his car will be done before mine.
i hope so

Thanks for the clutch!
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