Pavlo

Please remember the clutch is pulled rather than pushed to disengage. Could this explain how the 'ring' in the cover manages to get a higher clamping force?

I would beleive the clamping force, but don't beleive in ratings for torque and such. When I spoke to Tilton, they were recommending a 25% safety margin over the rated torque figures.

Also worth noting that paddle clutches will wear more quickly, they are not designed to long life.

Paul

john banks

So we have possible cumulative 30% and 25% correction factors which can be used either way depending on whether you are a cautious engineer or selling a product?

Does this mean I need a "650lbft" clutch to know it will hold my measly 400lbft depending on how the clutch is marketed?

T-uk

paul,

I can only assume, that the angle the diaphragm operates at, is increased with this ring. if it was on the other side the pedal would feel very heavy, so I think this is why it is made like this.

I have been in touch with andy over this and he could not explain the increased clamping force claimed between the lateral and sti/AP.

I don't question some sort of increase over a UK, but would like to see the claim of 1400kg proven over the sti/AP.

if this can be done, then without a doubt the lateral looks the best organic.

Denmark

iTrader: (2)

Oh man,

3 weeks with the TD05/06-20G and my clutch can´t take the heat,

The way i feel it is when i have just gone throught the gears it´s fine ,but next time it will not work probely and my syncros start to complain.

This is the OE clutch,were the cover has been uprated to 30% more clamping force then oe.

It was fine on the TD05 at 1,5bar midrange,but This turbo at 1,4bar is just to much

So now i have the same problem !!

So wich clutch is the best for a daily driven car, 50miles a day??.

All info would be great
Thanks,
Skassa

Pavlo

Andy,

I like the look of those sx clutches. You can get the ACT ones too, but I've heard they have a very heavy feel, don't last too long, and the paddle centre isn't sprung.

RPS kit at bottom of clutches looks similar in rating and design to lateral unit.

Paul

R19KET

T-uk,

My supplier doesn't currently provide a certificate, but I can ask if it's possible to do so.

Personally, I think that anyone with very high power, or into dragging, would be better off with a paddle clutch, but few are prepared to live with one.

I use the paddle version in my own car. The cover has the same clamping pressure as the organic, and never slipped. This was when the engine had a bench dyno's 538ftlbs. I may need to up rate it with the next engine though.

Mark.

Andy.F

Now would that be because you will have SOOOOO much more torque (read talk) or because its service life is rated at one event duration ?

R19KET

Andy,

Neither, it will because the engine will have more torque(read TORQUE) than last time.

Have a happy New Year.

Mark.

T-uk

cheers mark,

the 6speed will hopefully be here the second week in January , so any info from the manufacturer , would help make a decision.

[Edited by T-uk - 12/30/2003 5:33:34 PM]

911

Just driven my STi round the block having finished the fitting of an AP organic and an RA transmission 'transplant'this morning.
The pedal is sooooo light its untrue, almost un nerving, and it realy is smooth with a very different bite point.
My original STi unit was fine but the disc was almost down to the rivits.
How many miles to bed it in do you think? The hill climb season starts in 3 months time and I need all the bite I can get off the line with slicks.

john banks

Took some pictures of the flywheel still on the car which has some blueness. The original flywheel is then shown and then the original and Lateral clutch plates side by side.

Since we've just bought an 800mm lift trolley jack and are getting a transmission cradle, I am tempted to just put the Lateral clutch back in since it hasn't slipped yet.

Flywheel on car now - billet - after 3000 miles







Original flywheel after 30000 miles



Original 30000 mile clutch and 3000 mile LP clutch





[Edited by john banks - 12/31/2003 2:48:17 PM]

john banks

Made pictures a bit smaller so they don't require scrolling to see (unless you have it at 1600 x 1200 )

Wondering about what people think about the blueness on the new flywheel - does this suggest the clutch is slipping and do you think I should refit it?

T-uk

you use far too much NF

did the pics of the cover's "lugs" not come out?

john banks

Not very well but I'll post them below....

john banks

Original


Lateral


What I don't get is how this extra ring is the only apparent difference between the two in terms of clamping force, and exceeds anything that Daikin or Exedy supply in their catalogue until you get to the carbon clutches for drag application.

[Edited by john banks - 12/31/2003 3:20:03 PM]

AlanG

Where's ma glasses?....

Alan

911

The stock flywheel @ 30K looks exactly the same as my STi @ 25K. Same blue and surface finish. I put a new AP Org on as it was without the hassle of refacing it. My car has been hill climbed for 2 years and has seen many '5000rpm/dump the clutch' starts. The driven plate was more worn than yours, and slipped only once when the car had slicks on.
Graham.

Pavlo

I figured it out. The function of the spacer ring is to move the point (annualus) of force on the pressure plate closer to the pivot of te diaphragm spring. By doing this the force on the pressure plate is higher for same offset, but the effective lever length to unload the spring is actually longer, giving a slightly decreased pedal force to the unmodified cover.

Paul

T-uk

now we just need to find out if the STI/AP have this ring.

anyone?

Pavlo

I have an AP paddle clutch in garage, wait a mo....

goes down to garage.

And no there isn't an extra ring.

But the ring would do as I suspected having just looked at the cover in the garage.

Paul

harvey

iTrader: (48)

T-UK: You wanted someone with the facility to measure the clutch clamp pressure. I think I have the very person for you and they also said they expected to be able to identify any clutch given to them.
Separately John Pye can have uprated springs fitted to clutch plates. It seems to be something he gets done quite regularly.
Anybody needing his number give me a ring or e-mail.

Pavlo

ooooh, that's good to know!

Paul

T-uk

harvey,

thanks very much. do you have an idea of turn around?

I will let jb know and see what he says and let you know. I think it will be the second week in january before the box arrives, so if it is possible to get the clutch tested fairly soon, this would be the best solution.

john banks

I have been advised that the 6 speed box has a completely different clutch and clutch cover and that a clutch for the 5 speed will not work. I am puzzled by this. Can the 6 speed box users - David Wallis and Denmark confirm please?

Pavlo

5 speed clutch will work fine. The 6 speed does have a different flywheel, clutch plate and cover, but provided you use a complete matching set you will be fine.

David's car has a lat perf billet flywheel and paddle clutch

Paul

Denmark

iTrader: (2)

Paul is right,

On mine i´m using the oe flywheel/clutch,no problem at all

I think it would be great with the 6speed flywheel/clutch as it´s bigger 240mm vs 230mm ,and i think it will hold up better.


Regards,
Skassa

T-uk

both clutch covers will hopefully be getting tested wednesday.

can someone tell me what a standard MY99> UK clutch clamps at? I am guessing it is approx 725kg as AP/STI claim 44% increase iirc with approx 1050kg clamp.

should be interesting to see if the lateral really is approx 90+% higher clamp than a standard. the standard has 32000miles of use while the lateral is almost new.

T-uk

box and bits here

strange how a box,prop and linkage can all be sent, quicker than a cheque

mark,

any chance of you posting the proof of the lateral clutches clamping force?, it seems a bit pointless for us to have the cover tested,now that the box is here if you can actually back your claim up.

[Edited by T-uk - 1/6/2004 11:36:16 AM]

R19KET

T-uk,

1400kg is the manufacturers stated clamping pressure, and I have no reason to doubt his honesty.

I called Aus' the other night, but they weren't back at work yet. I will call, and email them tonight.

Mark.

T-uk

any links to manufactures site giving info, similar to what andy posted?

surprised it was not in the daikin/exedy site as iirc you said some where they made it.

[Edited by T-uk - 1/6/2004 12:15:14 PM]