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4/25/2013 8:11 am  #121


Re: The Jaguar IRS picture thread

I forgot to post some pictures of my Jaguar IRS.  It's nothing fancy except for the vented disc brake upgrade.  The rotors were custom made by Hoerr Racing Prodcuts, the hats were made by a buddy from 7075 aluminum bar, and it is assembled using AN aircraft hardware.  I also made some spacers for the calipers out of 6061 which was pretty straightforward.  I finished it off with a set of EBC Redstuff pads, a braided stainless brake hose, a set of stiffer and lower King springs, KYB shocks, and all new rubber bushings.  It turned out really well!

http://www.buyrcars.com/IMG_5639smallest.jpg


http://www.buyrcars.com/IMG_5638smallest.jpg


http://www.buyrcars.com/IMG_5641smallest.jpg


http://www.buyrcars.com/IMG_5642smallest.jpg


http://www.buyrcars.com/IMG_5658smallest.jpg


http://www.buyrcars.com/IMG_5627smallest.jpg


http://www.buyrcars.com/IMG_5663smallest.jpg


http://www.buyrcars.com/IMG_5673smallest.jpg


http://www.buyrcars.com/IMG_5677smallest.jpg


http://www.buyrcars.com/IMG_5695smallest.jpg


http://www.buyrcars.com/IMG_5696smallest.jpg


http://www.buyrcars.com/IMG_5713smallest.jpg


More info and pictures at my website:
http://www.buyrcars.com/jag.htm

 

4/26/2013 10:52 am  #122


Re: The Jaguar IRS picture thread

Outstanding!!!


97' C5 Corvette, 46' International Harvester K3 Street Rod

46' International "Harvester of Sorrow" Build Thread
http://www.killbillet.com/showthread.php?t=24127
 

9/12/2013 6:31 am  #123


Re: The Jaguar IRS picture thread

Hmmmm, OK, probably not the right place to ask, but I cannot find a better one;

Is there a drawing / template available of the bolt parterns of the Jaguar IRS?

I have bought an old Chevy truck which I'm going to convert to a hot rod, and I consider using the Jaguar IRS as it is easily available here in Europe. (I'm also considering a Ford Crown Vic front set-up, that is a lot harder to come by, and irrelevant to this forum).

Cheers,

Hugo

 

9/15/2013 3:38 pm  #124


Re: The Jaguar IRS picture thread

Drawing/template of bolt pattern? What bolt pattern? The cage frame mounts? Lug pattern? What are you looking for?


97' C5 Corvette, 46' International Harvester K3 Street Rod

46' International "Harvester of Sorrow" Build Thread
http://www.killbillet.com/showthread.php?t=24127
 

9/16/2013 12:11 am  #125


Re: The Jaguar IRS picture thread

Hi, thanks for the reply. I'd like to get rid of the cage, integrate into the chassis. So top-of-dif plate, lower axle suspension points on the diff, top coil-overs mounting points. I think that is it.

Hugo

 

9/22/2013 11:22 am  #126


Re: The Jaguar IRS picture thread

If yours is still in the cage, just measure it. That's what I did. I cut my cage apart and kept the upper portion so had the upper coilover mounts to reference back to. Upper plate, just made a template from the top of the diff and the upper part of the cage.


97' C5 Corvette, 46' International Harvester K3 Street Rod

46' International "Harvester of Sorrow" Build Thread
http://www.killbillet.com/showthread.php?t=24127
 

11/03/2013 6:20 am  #127


Re: The Jaguar IRS picture thread

I  just have to believe, an A-arm type LCA with a Watts link at top. Like posted on this thread. Will give the closest performance similar to a double wishbone design. The lower has no change of angle, (jounce/rebound) and pushes near center. It is a wisbone! Then the way the Watts is setup, closely neutralizes any change in angle with the two links. The front link cancels the rear link and vise versa. The only diff is your still sitting on the half shaft. I love the simpleness, it should have very little effects during acceleration and braking. I guess I may be rehashing an old issue. http://cdn.boardhost.com/emoticons/happy.png


http://a.imageshack.us/img252/5189/watts020.jpg

http://members.boardhost.com/IRS/msg/1281640983.html

Ralphy

Last edited by Ralphy (11/03/2013 6:51 am)

 

11/12/2013 5:33 am  #128


Re: The Jaguar IRS picture thread

Thanks for the info. I am new to the IRS, but not cars, this is a good site.

 

11/23/2013 5:37 am  #129


Re: The Jaguar IRS picture thread

I came across these pics the other day. Check out the uprights and halfshafts. Was the builder in need of clearance? I've never seen such elongated uprights!

http://www.clubcobra.com/forums/attachments/shop-talk/3245d1023500460-pin-drive-pins-p6060002.jpg

http://www.clubcobra.com/forums/attachments/shop-talk/3248d1023500811-pin-drive-pins-p6060003.jpg

http://www.clubcobra.com/forums/attachments/shop-talk/3246d1023500643-pin-drive-pins-p6060004.jpg

Link

http://www.clubcobra.com/forums/shop-talk/17708-pin-drive-pins.html

Ralphy

Last edited by Ralphy (11/23/2013 5:46 am)

 

11/23/2013 12:43 pm  #130


Re: The Jaguar IRS picture thread

The guy has a knack for taking uninformative pics.

 

11/23/2013 3:33 pm  #131


Re: The Jaguar IRS picture thread

Yeah, I downloaded the pics at work. Then I blew them up..The HS's can't be but 6 to 8 inches long, camber inc. no?

 

11/23/2013 6:51 pm  #132


Re: The Jaguar IRS picture thread

I don't know anything about the knock off style hubs. Are the uprights stock or shop made? I'm curious as to how the LCAs hook to them.

 

11/23/2013 7:09 pm  #133


Re: The Jaguar IRS picture thread

http://img.photobucket.com/albums/v707/gbarnes/JagRearend-BackView-2.jpg

http://www.tbucketeers.com/threads/asking-on-a-jag-rearend-again-part-2.11232/

http://www.clubcobra.com/forums/attachments/shop-talk/3245d1023500460-pin-drive-pins-p6060002.jpg


The outer end of the dog bone looks to be inside the frame width. Typical Cobra frames allow enough room for a coil over outside the frame. And still give enough room for tire clearance through camber. I don't think the upright needed all that size. The IRS looks over narrowed.

He must have been planning to fit 12" plus wide tires into the rear. Some of the newer kits promote 12" wide, most kits are 10" max.

Last edited by Ralphy (11/24/2013 6:24 am)

 

11/24/2013 7:09 am  #134


Re: The Jaguar IRS picture thread

The Cobra JAG IRS show above "looks" more or less Normal (to me). 
My "cheezy" paint representation below shows why I think so.  Cheers - Jimhttp://i44.tinypic.com/212hgzl.jpg


UNDERCONSTRUCTION! Highly Modified C3 Corvette
         Dual Wishbone IRS w Subframe + Custom Uprights
 

11/24/2013 10:33 am  #135


Re: The Jaguar IRS picture thread

It just seems to me that you would lose the effectivenes of the double (wide) LCA running back up to a near single point of attachment on the hub and it would also need a jointed connection to keep things from tool blocking. The design says extra wide wheels , just not seeing anything to keep them from wrapping up. One pic looks like some hadrware for a trailing link.... mounted to what? Pics to impress not detail I guess,LOL

Last edited by Digz (11/24/2013 10:42 am)

 

11/24/2013 1:18 pm  #136


Re: The Jaguar IRS picture thread

Okay I see it now, Having a pad is really handy expanding a picture. The trailing links are straight forward. The side view has the link out on the drivers side. But you can see the mount at the frame corner. The link is in on the passanger side. You can see it if you expand the pic enough on the two other views. I'm still googling over the upright, looks pretty fancy. Pics as Digs says are meh! Setup is still shaky, maybe a Watts up top.

Ralphy

Last edited by Ralphy (11/24/2013 1:21 pm)

 

11/24/2013 4:04 pm  #137


Re: The Jaguar IRS picture thread

Digz wrote:

It just seems to me that you would lose the effectivenes of the double (wide) LCA running back up to a near single point of attachment on the hub ...

As I look at the LCAs - it appears there are duals - and can almost (believe) see a second strut in the photo from the "hub" - no doubyt welded that links to the forward shock and LCA. [I considered scribbling in a second Red strut, and Blue LCA - but it got too cluttered. The Gray box is the frame represented.]

Overall I'd say some weight loss in the dual LCAs vs Large Bone, but probably offset by some weight gain in the Upright/Hub/Spindle - thingie. Shocks seem to be in the standard location.  

Google away Ralphy!

Cheers - Jim


UNDERCONSTRUCTION! Highly Modified C3 Corvette
         Dual Wishbone IRS w Subframe + Custom Uprights
 

11/24/2013 4:07 pm  #138


Re: The Jaguar IRS picture thread

LOL!

Are you seeing a copy of Guldstrand C2/C3?

http://www.guldstrand.com/ProdImages/5-Bar-Suspension.jpg



Ralphy

Last edited by Ralphy (11/24/2013 4:09 pm)

 

11/24/2013 7:28 pm  #139


Re: The Jaguar IRS picture thread

Ok that looks like it really. That hub set up sure makes it look like the geometry would be wrong though the way the pics hide things.

 

11/24/2013 8:17 pm  #140


Re: The Jaguar IRS picture thread

Ralphy wrote:

LOL!

Are you seeing a copy of Guldstrand C2/C3?

http://www.guldstrand.com/ProdImages/5-Bar-Suspension.jpg



Ralphy

Yeah - Minus the Dual Trailing Arms! LMAO. [ (3)]    =   [   (  )] [ dam em**cons...]  You get the picture.

The challenge here and any of these is keeping the half shaft a a key component of teh suspension.  Yep - it works - but the geometry can never be "tailored" to improve performance.  You are kinda stuck where the axle is.

Cheers - Jim


UNDERCONSTRUCTION! Highly Modified C3 Corvette
         Dual Wishbone IRS w Subframe + Custom Uprights
 

11/25/2013 3:53 pm  #141


Re: The Jaguar IRS picture thread

COOL find Ralphy!  Those have to be the most elongated uprights I have ever seen. They look like they were intended for wheels with a whole lot of back spacing.  Half of the pin drive wheels I have seen at the track were three piece modular wheels. The sky is the limit on them as far as back spacing go's.  The stub axle must be 14" long for that set up to work. The length would put a great deal more load on the U-joints and lower control arms due to the increase in distance between the wheel mount location and the pivots.  That aside the work looks sanitary.

Last edited by tyrellracing (11/25/2013 3:55 pm)

 

11/27/2013 2:34 pm  #142


Re: The Jaguar IRS picture thread

Phantomjock maybe there's an upper trailing link not seen? If not, I can't see how anything would stay put under load.

Tyrell based of what I have? My body is just a bit wider than the frame rails. Look at the the hub faces and they're almost as wide. Now my rear fenders are flaird a bit more. But yeah, he won't be runnig no deep dish wheels. 

Ralphy

Last edited by Ralphy (11/27/2013 2:44 pm)

 

11/27/2013 4:53 pm  #143


Re: The Jaguar IRS picture thread

On another note, that frame, right at front of the rear kick up on the 45 degree weld? Damn if I'm missing something, but is that cheesy looking! Scary!

http://www.clubcobra.com/forums/attachments/shop-talk/3248d1023500811-pin-drive-pins-p6060003.jpg


This is how mine and many other kits are done.
http://www.gessford.com/cobraparts/images/glenn10.jpg

http://www.clubcobra.com/photopost/data/2/10413rearpassehgerw.jpg

Ralphy

Last edited by Ralphy (11/27/2013 5:01 pm)

 

5/10/2014 4:47 pm  #144


Re: The Jaguar IRS picture thread

Hi all first post here building a 60 F-100 with  1994 Jag XJS ifs & irs but getting conflicting info on brake master and booster requirments any one not using a booster been told it wont work as the Jag needs a minimum of 800psi to even activate the rear brakes ?

 

5/11/2014 5:33 am  #145


Re: The Jaguar IRS picture thread

What you end up with for PSI will be determined by the bore of the M/C. The bore/stroke of the master will depend on flow requirements needed to keep a decent pedal hieght. I do not know the specs on the Jag calipers for that year and haven't gotten that far on my build with the mid 80's one I have in the works. I have done non Jag conversions to rear disc using a 1" bore M/C with good results. An 1-1/8" bore would be a bit more pedal for me if I thought it was needed but would need more leg at the pedal. The math is tedious but doable to figure out what you need. Perhaps one of the guys have some decent links for it. Boosters do not really increase the pressure so much as to make it easier on the driver to apply it. They enable larger bore M/Cs that move more fluid to be more comfortable to use. You proabaly know all this already anyway. but the residual valves would keep 2lbs of pressure on the calipers already , so to say it takes 800lbs to activate them sounds goofy to me. jm2c
Edit: Being a Pick Up and firewall mounted residuals would probably not be needed.

Last edited by Digz (5/11/2014 5:47 am)

 

5/11/2014 5:36 am  #146


Re: The Jaguar IRS picture thread

Welcome Slick111

I'm not familiar with Jags. However that statement sounds wrong. In fact the logic seems completly backwards. Rears typically need to be limited in that they can over brake. The fronts do most of the work. The harder you brake the lighter the rear of the car gets, which increases the chance of the rears over braking and locking.

I talked to a Wilwood rep maybe three weeks ago. He explained how to use a balance bar and a proportioning valve to get the best from your brakes. The proportion valve goes to the rears limiting brake force at those really hard hairpin turns.

As far as activating? I've never heard of brakes selectivly turning on. All four wheels should be active always.

Ralphy

Last edited by Ralphy (5/11/2014 6:09 am)

 

5/11/2014 5:48 am  #147


Re: The Jaguar IRS picture thread

Digz, I just saw your post. I agree 800 psi actually sounds pretty high at the rears. Remember this larger pistons at the caliper equal more braking force and more travel at the pedal. A larger piston on the master cylinder equals less force, meaning you'll have to push harder to stop. But less travel. It pushes more fluid decreasing travel but you have to push harder.

Typicall MC's for Cobra guys are 3/4", some even use 5/8".

Guys that track their cars use a porportioning valve like the one below. It's a six position lever so you can fine tune the rears for those really hairy turns and remove locking of the rears. Set up so you can change while driving. As the Wilwood rep said, you want to stop a car with the rears as much as possible. So you limit upsetting the front end. However the fronts do most the work.


http://www.wilwood.com/Images/MasterCylinders/MasterCylinder_Photos-Large/260-8420-lg.jpg
The propotion valve adjuster sets where it kicks in. Before this point it flows 100%. Once it reaches it's set point it halves any increases. So say it's set at 500 psi, once you reach 500 if you pdal what would be 600. You'll get 550 psi.

Here's where someone charted the valve The intersect point is where the proportioning valve is set to kick down line pressure. Line pressure increases at 50% from that point.
http://www.connact.com/~kgross/FAQ/assets/prop4.gif


I know your talking using a booster but all this still applies. As Digz said it's only an assist.

Ralphy

Last edited by Ralphy (5/11/2014 6:20 am)

 

5/11/2014 1:26 pm  #148


Re: The Jaguar IRS picture thread

OK I did a lot of checking myself as well it makes sence as the booster only makes it easyer on your leg but actually I want to feel the pedal and going from 4 wheel drum brakes to all disc will be light years better any way.And big thanks for all the information guys glad to be on the site.

 

6/17/2014 10:08 pm  #149


Re: The Jaguar IRS picture thread

Check out the Jag IRS in Bodie Stroud's '31 Plymouth project gallery.
http://bodiestroud.com/project?album=2&gallery=13


"'Cars are like primates. They need to squat to go.'—Carroll Smith"
 

6/18/2014 10:08 am  #150


Re: The Jaguar IRS picture thread

How narrow do you think that is?  Seems like 3 - 4 inches was removed from each side.

 

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