The Derploader

[GeneralZod]

Yeah saw that, I also owned TDIs with some of the worst dual mass flywheels. I wouldn't go back either.

Much of what I am getting at deals with this... When you start going really light, some dynamic things happen. One of the biggest issues is the weight is on the outer edge of the disc, or flywheel. Add heat and speed variation you can get oscillations in the flywheel. They might not even be visible, but enough.

If the clearances work as the flywheel is static, there could be issues while in motion. This is one reason why they went with heavier, dual mass flywheels.

 

[Preloader]

Aside from the possibility that the flywheel is too thin, there is one more variable to consider.

I just measured the thickness of the stock friction disc and found it to be .250",
+/- .031".

It may be that the CM disc is even an .125" (1/8th) too thick. That would roll the fingers away from the TOB substantially, because of the ratio of the finger fulcrum.

 

[Preloader]

Also Zod, I understand what you're describing, but I believe the slave would have over travelled in operation even with the engine off and the flywheel stationary. It's final range needs to be dictated by the depth of the pressure finger travel.

 

[GeneralZod]

Aside from the possibility that the flywheel is too thin, there is one more variable to consider.

I just measured the thickness of the stock friction disc and found it to be .250",
+/- .031".

It may be that the CM disc is even an .125" (1/8th) too thick. That would roll the fingers away from the TOB substantially, because of the ratio of the finger fulcrum.

Grrrrr, that is sloppy. I would really have a hard time being nice to CM after the first booboo. I would be ok, but not happy with a .01 difference. @.125 that is easily visible.

Again, they better back their product.

 

[GeneralZod]

Also Zod, I understand what you're describing, but I believe the slave would have over travelled in operation even with the engine off and the flywheel stationary. It's final range needs to be dictated by the depth of the pressure finger travel.

I see, I assumed CM would engineer a flywheel so that this wouldn't happen.

So they are just cutting flywheels with no regard for other factors? I find this a bit worrisome. And, did they just get lucky with Swordsmith's flywheel?

Oy vey bro, hang in there.

 

[Preloader]

Add to that, the fact that the stock disc has a thin steel wafer between the to friction faces. I can squeeze it from .285" down to .250". I guess they designed it that way to create a softer engagement, but in addition to the dampening dual mass fly, the stock set-up is junk.

So now I wonder if CM used the .285" for their thickness, which would be wrong.

I would think they would know better than that though.

 

[GeneralZod]

Add to that, the fact that the stock disc has a thin steel wafer between the to friction faces. I can squeeze it from .285" down to .250". I guess they designed it that way to create a softer engagement, but in addition to the dampening dual mass fly, the stock set-up is junk.

So now I wonder if CM used the .285" for their thickness, which would be wrong.

I would think they would know better than that though.

That is exactly what alarms me. Is this a bad day thing, or are they lacking any sense of engineering skills. I have hear of them before and know they have been around. This bothers me. Again, anything short of paying you for being a test might be unacceptable. Unless you knew going in.

If the wife wasn't edging 9 months preggers I would take the kids on a west coast road trip as we have the week off. I would be creeper about it too showing up unannounced...

 

[Preloader]

Hahaha, my wife would love a clutch party.

Here's a pic. Notice that I can literally pinch about .065 out of the thickness with just my fingers.

 

[GeneralZod]

They got some explaining to do...

 

[Eric Smit]

Hahaha, my wife would love a clutch party.

Here's a pic. Notice that I can literally pinch about .065 out of the thickness with just my fingers.

I need to get this **** out of my car.

 

[Preloader]

So I am trapped in my head til Monday but.....

I feel that I can rule out friction disc thickness and I'll explain why.

Even if the CM is a little thick causing the initial resting of the fingers to be a little low, the end travel of how far the fingers will "sink" is dependent on when the back of the pressure disc bottoms out on the pressure housing.

So this puts me back at the conclusion that it has to be the flywheel thickness.

An undesireable option is to install the CM clutch on my stock flywheel and test it. If my slave holds then I can drive and enjoy the benefits of a stronger clutch while CM sorts out the flywheel issue.

If the slave blows again, then I'll know the clutch/pressure plate is to blame.

This option is undesireable because it absolutely means at least 2 more R&Rs and 1-2 more slave replacements.

But at least I'll have my car back.opcorn:

 

[GeneralZod]

I agree, but like I said before, I think there are multiple issues here. The main issue being the flywheel. Just be patient... It is all you can be.

 

[Foxbox]

This seems obvious and you're prolly aware already but figured I'd post it anyway.

Preloader, you have a "rigid" disc correct?

It says if you're using the stock flywheel to select the rigid disc and if you're using their aluminum flywheel to select the sprung disc.

Could that be part of the issue?

I just noticed it while looking at prices on ttr's site. Figured I'd throw the idea out just incase.

 

[Preloader]

I believe the reason is because the spring dampened flywheel needs a rigid disc to increase performance.

Also the snapshot you posted is for stage 3 right?

I'll mention this to them on Monday, but I don't believe rigid or dampened affects the thickness of the stack, but it's worth questioning.

Thanks!

 

[Foxbox]

The screen shot is just their generic description for the CM clutch I believe.

 

[$ub$onic]

How many more time do you feel like pulling the trans out ?

 

[GeneralZod]

How many more time do you feel like pulling the trans out ?

I would assume as much as it takes...

 

[Eric Smit]

How many more time do you feel like pulling the trans out ?

he wants to get it down to 15 minutes. hahaha

 

[$ub$onic]

I would have lost my cool by now..... I give you a lot of credit

 

[Preloader]

i would assume as much as it takes...

this!