Question about differential, Pass roll bar.

[Joe@KMS]

Ronbo,

I don't believe a lateral force being applied to the diff through the axle (or half shaft) is needed to activate or deactivate the limited slip. It sounds to me like that is what you are suggesting???

Check out this website:
www auburngear.com/aftermarket/products/differentials/

Kirkham has used a couple of different limited slip units over the years. We are currently using Auburn units.

The cars do not experience chirping of the inside tires. That would most likely come from a locking differential as opposed to the limited slip that we use.

I am sure that someone with intimate knowledge of how clutch type limited slip diffs work will chime in and help us all understand.

FYI: We are having a great sale today in conjunction with our open house!

[Lew Ledyard]

Originally Posted by Joe@KMS

Ronbo,



FYI: We are having a great sale today in conjunction with our open house!

What is on sale?

[Joe@KMS]

Originally Posted by Lew Ledyard

What is on sale?

Kirkham Motorsports is having a sale on the 427 KMS/SC.

Summit 08 SALE

[patrickt]

Joe, could you take a minute and describe the Kirkham rear? I take it that it utilizes the Dana 44, like the Jag, but does it have inboard brakes? If not, how do you all work the rotors & hubs to go with the pin drives and what rear brakes do you go with?

[CHANMADD]

The "side forces" that is if you pushed the wheel towards the diff has absolutely nothing to do with the operation of the differential. The output shaft bearings clearances are preset within the diff casing. If by putting force from the side created movement "inside" the diff you would have to throw the diff away. The holding or breaking of the clutch pack is caused by the rotational forces of the driveshaft not the transverse forces.
The same applies to both types of diffs.
The spicer sideshafts are needed when you have double wishbone suspension because (remember Geometry at school), the control arms and the sideshaft do not scribe the same arc as they go through their respective ranges of travel. So the sideshaft needs to have an adjustable arc !!! I hope that explains it in somewhat simple terms!!

[Ronbo]

Yep, I was wrong. Seems it's merely a "brute force" approach where the clutches, cones break loose from enough pressure. This "bias" is determined by the springs.

Found this on one of my favorite sites: Howstuffworks "Clutch-type Limited Slip Differential"

Thanks for all the input everyone.

Patrick I can answer your question, they use outboard brakes (wilwood). There are pictures on Kirkham's site of some of the components in the "manual" section and also look at Manufacturing, suspention for the outboard components.

Guess I'll be calling them Monday to get my order in, can't pass on a sale. Thanks Joe.

[Ronbo]

Talked to Joe today and got my order in...

After looking through all the photos of the summit page I found one that shows the roll bar mounts. (last photo of the differential section) There are two brackets welded to the frame plus they're at different heights so this is not any easy add-on.

Now that I've learned how differentials work it should be a cake walk. (especially since they're putting most of it together) I figure I can handle the fuzzy dice mounting on my own.