slpin

iTrader: (9)

you know how they say 4 puck grabs harder?
it is because the combined surface area of the 4 puck is more than the surface area of the 6 puck?


also, anyone run an unsprung 4 puck with stock pressure plate? how do you like it?

Cowzzz

from what ive been told a clutch's "grabing" power is harder the less the surface aera(someone correct me if im wrong). i had a ACT 4puk in and it really wasnt recomened for street use. so i went with a 6 puk. and i can tell a difference with the "grabbing", the 6 puk is alot better for street use and still has the same strength as a 4 puk.

slpin

iTrader: (9)

see the thing i dont get is, if 4 puck has less surface area, then shouldnt it grab not as well due to less frictional area?

but if the 4 puck have more surface area, then it coudl explain why it grabs harder and should last longer???

KompressorLOgic

iTrader: (6)

well up to a certain point the less surface area means the harder the pressure plate squeezes that smaller area,

RacerXtreme7

iTrader: (2)

Its a matter of surface area and force applied to it. If you weigh 150 pounds and wear snow shoes in the snow, you don't sink and thus easier walking/getting around due to the huge surface area (for those who aren't imagining what snow shoes are, there the funny looking shoes that look like a tennis racket that Eskimo's wear on the bottom of their feet to get around). Now try to wear womens heels in the same snow even though you weigh the same, your going to sink. Same with 3 vrs 4 vrs 6 puck clutches. Your using the same pressure plate and its applying the same amount of pressure, but since the 4 puck has less surface, its pound per square inch of pressure is greater, conversly, the 6 puck has more surface area, so the pressure is distributed more.

~Mike...........

ilike2eatricers

^Word

It's all about applied pressure being divided over 4 points rather than 6.

Let's say it's 400 ft/lbs of clamping pressure. Divided by 6 pucks that's 67ft/lbs per clutch finger whereas the 4 puck would have 100 ft/lbs of clamping force per finger. So a 3 puck is super hardcore.

Also on a regular street disk the 400 ft/lb of pressure would be distributed over the whole 360* disk.

carsaregood

i could be wrong but.. here are my thoughts on it

just from thinking about it, i'd say it has to do a lot with the friction material of the disk. higher coefficients of friction will make the clutch more "grabby," obviously, so to compensate for that, they reduce the amount of surface area.

also the pressure over area argument (what racerextreme said) seems correct.



also, sorry man, but not to be a total anus:
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^Word

It's all about applied pressure being divided over 4 points rather than 6.

Let's say it's 400 ft/lbs of clamping pressure. Divided by 6 pucks that's 67ft/lbs per clutch finger whereas the 4 puck would have 100 ft/lbs of clamping force per finger. So a 3 puck is super hardcore.

Also on a regular street disk the 400 ft/lb of pressure would be distributed over the whole 360* disk."
-----------------------------------------

ft/lbs is a measurement of torque.

pressure is in force / area, so it would be in lbs. / inch^2 (psi).

staticguitar313

iTrader: (2)

Best answer yet, you get a gold star

SureShot

The general variables are:
coeffecient of friction
clutch diameter
clamping pressure (clamping force divided by clutch area) (approximately)
number of discs

ilike2eatricers

also, sorry man, but not to be a total anus:
---------------------------------------
^Word

It's all about applied pressure being divided over 4 points rather than 6.

Let's say it's 400 ft/lbs of clamping pressure. Divided by 6 pucks that's 67ft/lbs per clutch finger whereas the 4 puck would have 100 ft/lbs of clamping force per finger. So a 3 puck is super hardcore.

Also on a regular street disk the 400 ft/lb of pressure would be distributed over the whole 360* disk."
-----------------------------------------

ft/lbs is a measurement of torque.

pressure is in force / area, so it would be in lbs. / inch^2 (psi).[/QUOTE]

Yea no problem I just wrote it in a rush to get the point across and didnt use the right measurement. It was lunch time over here, sue me

88rxn/a

iTrader: (6)

how reliable is the 4 puck?? i want to use this for my n/a with a stock turbo slapped on it and want it to be around 250whp. so is the mazdatrix 4 puck sprung clutch with stock new oem pressure plate gonna handle it? i hate that they dont show ratings and this is cheaper than calling form coast to coast!