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 1916baja
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| posted on January 5th, 2010 at 07:45 PM |
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Whats the difference?
What's the difference between a 4 puck clutch disc and a normal one?
Cheers
Mick.
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 barls
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| posted on January 5th, 2010 at 08:08 PM |
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surface area for a start.
the four puck only has a small area for interface where as the standard it is complete 360 degreee
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jsheppard64
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| posted on January 6th, 2010 at 12:58 AM |
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I wonder about this too
so pressure is Force over Area right?
having smaller area on the clutch plate would experience more force and therefore it would grip more?
but having less surface area on the friction pad make them perform the same? (assuming nothing was changed with the pressure plate)
note : '?' on almost every sentences
cheers
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vw54
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| posted on January 6th, 2010 at 05:40 AM |
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the puck clutches usually have a metallic friction material copper
where as the full stock clutches havea fiber surface
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1916baja
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| posted on January 6th, 2010 at 06:07 AM |
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so does that make a 4 puck clutch better than a normal one?
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Sides
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| posted on January 6th, 2010 at 07:32 AM |
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Depends on what you mean by "better".
My understanding is a 4 puck etc. will grip better overall, but because the pressure plate is the same and moves in/out at the same rate, well you
lose a large amount of of control over that grip.
Basically they become on or off...great for racing (providing drive line is strong enough to take it), but lack of smoothness/control not so great for
street driving.
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 matberry
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| posted on January 6th, 2010 at 08:03 AM |
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Yep Dave is right. There are puck clutches that have differing numbers of pucks too. You see 3, 4, 5 and maybe even 6 pucks, all in the quest to try
and smooth thier operatioin. They have crap operation and increased holding power because the clutch shoe (clamping bit of the pressure plate)
literally distorts around the pucks thus gripping better. These days there are plenty of better options with better pressure in the pressure plate and
linings with more friction, not to mention for really big hp, multi disc clutches. No one needs a puck clutch these days, they destroy transmission
and driveline components and are a pig to drive. The best day owning a puck clutch is the day you remove it. They also trash the flywheel and pressure
plate surfaces due to the metalic linings and heat. IMHO
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vw54
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| posted on January 6th, 2010 at 09:45 AM |
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yeah the pucks are very sever
depends on what your doing with the car ideally for Drags where u need a good start
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BiX
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| posted on January 6th, 2010 at 11:41 AM |
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I have driven a few puck clutched cars, and most as stated above had a very on/off feel about them. Some well set up examples were fine, but most were
on/off. As sides said your gb and axles need to be up to the task. One evo I know went to a button carbonic clutch after always spinning a std one.
(the evo has a week clutch as the fuse point in the driveline!). with semi slicks, the puck clutch and motec, it blew the front diff and gb apart.....
allot of money!
If you don't need it stay with a standard. I run a standard clutch/material with a stage 1 kennedy and haven't had a problem with 130hp+ at the
wheels....
I have no sympathy for my car, only the wallet that pays for it!
Go hard or go home!!!!
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Special Air Service
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| posted on January 6th, 2010 at 01:23 PM |
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I know what you mean....
my clutch is almost pucked
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68AutoBug
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| posted on January 6th, 2010 at 01:47 PM |
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| Quote: | Originally
posted by 1916baja
so does that make a 4 puck clutch better than a normal one?
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NO... Very Severe... On or Off
they don't slip...
are Metallic usually...
I wouldn't have one..
LEE
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matberry
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| posted on January 6th, 2010 at 03:17 PM |
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I have setup and driven a few over the years. My old DC bay had a 2.2 911 160 hp Porsche 6 cylinder through a 200mm hd clutch and 4 puck. No slip
issues except trying to take off on a hill towing the race car was a bit of an art to get right. It's a way of getting more clutch for few $$$'s,
but a better solution can be had for sure.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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jsheppard64
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| posted on January 6th, 2010 at 04:56 PM |
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| Quote: | Originally
posted by 68AutoBug
| Quote: | Originally
posted by 1916baja
so does that make a 4 puck clutch better than a normal one?
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NO... Very Severe... On or Off
they don't slip...
are Metallic usually...
I wouldn't have one..
LEE
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Hi Lee
Isn't yours an auto
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Smiley
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| posted on January 6th, 2010 at 09:48 PM |
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| Quote: | Originally
posted by jsheppard64
| Quote: | Originally
posted by 68AutoBug
| Quote: | Originally
posted by 1916baja
so does that make a 4 puck clutch better than a normal one?
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NO... Very Severe... On or Off
they don't slip...
are Metallic usually...
I wouldn't have one..
LEE
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Hi Lee
Isn't yours an auto
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Still has a clutch though, they're very......complicated.
Smiley
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1916baja
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| posted on January 6th, 2010 at 10:28 PM |
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right! so puck clutch =bad. Thanks for the info guys, really helpfull.
Mick.
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BiX
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| posted on January 7th, 2010 at 08:47 AM |
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With all things no black and white. But yes, unless you have a 200hp+ moster a std clutch with maybe a better pressure plate is all you need.
Puck clutches have their place.
I have no sympathy for my car, only the wallet that pays for it!
Go hard or go home!!!!
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