Think you got clutch problems?, Have you seen this, Brad? Options

[Brad Roberts]

I know he likes to "Engineer" but WEVO sells a direct bolt on flywheel 5.5 clutch setup with a Hyd. throwout bearing that will handle more than 400hp.

You will be hearing more and more about WEVO in the coming months.. I just dropped off my personal 915 gearbox for my tube frame 914..soon to have a short stroke 3.2 with the same ITG filters and TECIII..LOL

Damn.. you moved to my "must help list" quickly..

Let me know what you need..

B

[meursault]

They're almost there with the clutch. Tilton apparently doesn't make pull clutch setups, but a three disk arrangement was purchased and the rest has been adapted and is already there. We installed it in the car but couldn't get enough engagement in the clutch, so the flywheel may need machining for an improved action on the throwout bearing.

Could you send me some information on Wevo's setup so I can pass it on?

[914Timo]

Damn meursault.... You nearly cheated me.

You show in the other thread your 911 gear box and told you have used some sportomatic parts. Then I started to have doubts if you are real pro. Not just any guy have all those parts laying around and can put them together so that all works.

Damn I am happy I didnt try to tell you something you allready have learned in mother's milk. (IMG:style_emoticons/default/wink.gif)

Really nice to have more pros here. (IMG:style_emoticons/default/pray.gif)

[Brad Roberts]

His output shafts are stock early 911. There is really nothing special about them. The sporto did use them.. but so did all the early 901/911 boxes.

B

[meursault]

His output shafts are stock early 911. There is really nothing special about them. The sporto did use them.. but so did all the early 901/911 boxes.

Actually, no. The only gearboxes in which I have found that particular length flange is the sportomatic. Believe me, I have a large selection of transmissions to look at.

For example, the gearbox I converted for use in a 914 was complete and had flanges with the right bolt pattern. They were just a bit too short, though.

I assembled a stock 914 axle from stub axle to flange and a 911 axle with the large CVs from stub axle to flange. Only the sportomatic flange and the 72-73 shaft made up the distance to give me an equal length axle.

[Brad Roberts]

I need a measurement. I have ran across 3 different lenght early 911 flanges all with the same part number.. I promise none of them came from a sportomatic (dont know that I have even seen one in person..LOL

I'll shoot pics with measurements of what I have.

It has also been discussed that the 914 stock axle was actually too long for the application. The axle end would actually hit the stub axle in hard turns... so I use the .250 shorter early 911 axles and have NO problems with them hitting the stub axles.

Pics to come (something I have needed to do for awhile now...)

B

[tahoward]

That car is unbelievable!! I've got to schedule a vacation out there!

[TMorr]

mersault,

I think your father might have contacted me already about our WEVO clutch package and probably knows as much as he wanted to.
His concern was that the driver has managed to break anything else so far and that a triple plate clutch was going to eliminate that risk.....
Our 500 ft/lb set up is a 2 plate Tilton package.

Be sure your friend Kenny is actually referring to a full WEVO Sideshift kit, not just a car with a WEVO shifter, I dont think there were any cars with WEVO Sideshift kit's at Fontana. The shifter is only part of the solution, the Sideshift kit transforms the whole installation.

Regards

Hayden PTBT

[meursault]

Hayden, (Is that your name?)

The concern seems to be that the actual Tilton pieces available are not designed for pull clutches nor will they be in the foreseeable future. Is that merely for the three disk setup? I mean, do they offer a two-disk package that is in fact intended for pull clutches?

Thank you for the response. It's great to have a parts manufacturer frequenting this board.

I think Kenny did see a car out there that was running a Wevo-converted transmission. I remember specifically that he was commenting on how much of the shifting mechanism was enclosed in the nosecone. I wasn't out there; I don't know.

Thank you,

Marc Le Friant

[TMorr]

Marc,

Yes, it is Hayden. The PTBT is just the abbreviation for Pretending To Be Tracey, my partner at Windrush, who is actually the registered user on this Forum.
The racing clutches designed for the type of cars we are all involved with are all (well mostly) push center style.
The CART cars and F1 cars use even smaller pull center clutches - but their release mechansim and bellhousing is all so unique, the application is not likely to filter down to club level cars.
A pull center clutch can be built more compact as the diaphram spring is edge pivoted (around it's perimeter) rather than a rocker style pivot, used in the push center clutches.
I have heard of an AP club level clutch, similar application to the Tilton's, that uses a pull center, but I have not had one to look at. It would be a standard pattern 5.5"Ø 8 bolt pattern for uniformity, of that I feel confident.
The 915 bellhousing is designed for either push or pull center clutch. The 911's all used pull center and the 912E used a push center. Our WEVO cable release mechanism set-up is a more refined derivitive of the 912E set-up
The packaging is so tight for length that we could not make a 3 plate set-up for the 915 without it being considerably more costly and probably hydraulic. However, the CWP in a 915 and other internals are not likely to accomodate anything above the torque capacity of a 2 plate clutch, so it's moot.
We have packaged a 3 plate Tilton 5.5"Ø carbon clutch in a short 930 bellhousing, that was tight, but we can do it. All the clutch parts are sititng on the bench, but we have not manufactured the very unique hydraulic release mechansim parts. In that case the motor, transmission and clutch are all about the same capacity - upwards of 600 ft/lbs of torque!

Regards

Hayden PTBT

[meursault]

Haha, I laughingly told Jacques to use a 912E bellhousing!

He seems to feel that pull clutches are superior to push. But fer chrissakes, do whatever it takes to have a decent clutch!

Thanks for the info. I'll pass it on.

[Drums66]

that sure is a fine rear shot of kenny's car in the above picture........mighty fine (IMG:style_emoticons/default/smilie_pokal.gif)