Competition SBC Triple Disc Clutch Picture

[South Bend Clutch]

Thats right!



Our new triple disc!!



The first one will be going to BigBadDodge.



13", 4200 lb. plate load, 3 clutch discs with 12 ceramic buttons or 12 feramic buttons per disc side totalling 72 buttons, 2 center plates at . 400 thick, Billet steel flywheel with bronze inlay, all cryogenicly treated, completely SFI approved.



I think we're going to name the clutch "The Beast" :-laf



Peter

 

[JasonCzerak]

BigBadDodge. Did/Do you not have a 4 disk setup? I was mindlessly wasting time at work and found your site.

 

[SRadke]

That looks like a monster no doubt. I like it!

 

[mhlbr]

Fitting that scott is going to test it.



That clutch looks awesome

 

[CHolman]

You'd need a Cummins just to carry the weight of that thing...

 

[JoshPeters]

BBD... .



Did you have a problem with the Iron Giant? I have no doubt that if anyone could find a weak link... . it would be you.



Especially after watching the video where you tear up those Boggers!



Josh

 

[OPoole]

Man UPS is going to love that thing a DD is 105lbs in the box. Put a fluidampr in front of it.

 

[mattymac]

Impressive to say the least!

 

[98slushbox]

If a guy needs a dual disc rebuilt will it be possible to pay extra to just upgrade?

 

[BigBadDodge]

Peter, I knew the CAD drawings wouldn't do it justice That thing is sweet.



Jason, No I haven't tried a four disc I was going to, but this was a little easier vice the blow proof can, different hydroics etc... . I am still using the stock bell housing along with a egine adapter and longer input shaft that I got through Van Haisley.



Josh, no propblems with the Iron Giant, the Boggers will take a toll on any clutch, but she broiled the Boggers pretty damn good on a few pulls.



Opoole, I ordered the Fluidampr on the group purchase just waiting for them to iron out the tach sensor issue.



Man, hope I can make wieght at IRP with that bad boy :-laf



BBD

 

[RyanB]

BBD- Just a hint of advice if you can use it. I also was on the group buy for the Fluid Dampner. Doug told me about the problem with the tach sensor (which I don't need seeing I am doing the conversion to the GM) Anyway, I went with the 24valve ballancer which is larger and doesn't have the pick up in it. What I am wondering if you could do for you truck is just take the Alternator to any starter/alt shop and have them open it up and have them hook up the tach wire????



I just got my shop to do this to my Cummins ALT (don't like the looks of putting a GM ALT on a cummins or seeing fabbed brackets... I like the stock look) anyway, they put the tach wire on for no cost and also wired up an external regulator for $50 for me but you wouldn't need that!



Worth a shot and the little larger size will help the harmonics a little!



Good luck... Ryan

 

[DPS]

Does it have any centrifugal assist? It would seem that just adding another disc will decrease the applied force over all the buttons, but maybe not. Is this clutch your competition to what Crower and Hays have been doing for years? Just trying to get a feel for what this clutches application will be and what kind of hp it is made to work with.



Josh www.dieselperformancesolutions.com

 

[Sled Puller]

It would seem that just adding another disc will decrease the applied force over all the buttons, Josh www.dieselperformancesolutions.com

If that was the case, Josh, then we would never have started pulling with double discs back in 2000.



Do a search on what you asked, you might be surprised the threads that come up, before you were a member.

 

[DRadzierez]

Peter you must have a lot of faith in these products to let guys like sleddy R +D stuff. Just kidding looks good and best of luck to you.

 

[JasonCzerak]

I'm no clutch expert, but common sence thinking out loud here:



pressure from the pressure plate is still pressing 4200# over al lthe disks, nothing is "flexing" to use up that energy. Adding a 3rd disk as 33% more surface area. Obviously that is going to translate to more holding power.



Top fuel dragsters run a 7 disk clutch pack, not sure on the size but I would thing 12" over 7 disk _SHOULD_ hold 6000hp.



You average ricer bike has 7 clutck disks as well, tiny and alot of them.

Does it have any centrifugal assist? It would seem that just adding another disc will decrease the applied force over all the buttons, but maybe not. Is this clutch your competition to what Crower and Hays have been doing for years? Just trying to get a feel for what this clutches application will be and what kind of hp it is made to work with.



Josh www.dieselperformancesolutions.com

 

[RyanB]

I am kind thinking along the same line as DPS. I can't see from the picture for sure but that truck is just a standard non weighted presure plate? Even though its 4200LBS I would think the weighted competition clutches would still lock harder?



I am not 100% up on my clutch knowledge so please don't knock me!



Ryan

 

[Will Manchester]

It would seem that just adding another disc will decrease the applied force over all the buttons www.dieselperformancesolutions.com

With a given pressure plate, the force seen on a clutch in a single disk application will be identical to all 3 clutches in SB's new design. Also, each individual clutch in a double disk design or a triple disk design will hold the same exact torque that a single disk clutch will. Therefor, a triple disk clutch will also hold 3x the torque of its single disk counterpart. It will also "grab" about 3x has hard!



Check out post # 25 that I wrote up a while ago - it will give you everything you need to calculate the holding capacity of a clutch pack (auto or manual): http://www.tdr1.com/forums/showthread.php?p=1336986#post1336986

 

[jwilliams3]

Well said Will.

Kind of what I was thinking.

 

[Bpostel]

Peter... isn't there a way you can build that clutch without having to use the longer input shaft and adapter plate?

 

[Bpostel]

If you could build it without having to use the longer input shaft and adapter plate it would save the customers $1200. Not trying to tell you how to build your clutches, just saying you might sell more if you didn't have to spend the extra $ on the longer shaft and adapter plate.