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This 2012 Lamborghini Aventador is one sexy set up.
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So.
Last edited by tyrellracing (10/27/2012 6:06 pm)
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I've never had a reason to think about this , so bear with me ,, but what is the metallurgy that allows a sway bar that short to be effective? I know I'm leaving out reasoning like suspension travel and vehichle weight. Is this the point where the only advantage of being IRS is wheel track adjustability?
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Feels good to be home. Digs the sway bar mounting point length only makes the sway bar more effective. If the 90 degree bend were say only 1/3 the length, it would be 3 times real travel. But what I see is where it mounts on the bell crank is closer to the pivot which does some serious reduction in travel. Then look at the vehicles center of gravity, sitting so low. The need for mass sway bar is not needed. Some guys who track Cobras, tell other members that when they also track their cars. To remove the rear sway bar and see what happens. Most report positive effects.
Ralphy
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No comment
Last edited by tyrellracing (10/27/2012 6:05 pm)
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One of the reasons this got my attention is I'm going to be up against finding something custom for a swaybar in this tin can I'm building. I have been looking at this so far.
Short of spending hours in a salvage yard measuring, I thought it might be an alternative. I'm only going up against real world roads and straight line stuff. Just kind of guessing but my vertical CofG is probably going to be near the 30" mark and sprung weight on the rear may be in the 1400# range. I don't want to end up with something thats going to look like that piece of "licorice" first time I hit a chuckhole leaving the driveway. I'm not far enough along to pin point mounting locations yet so for know it's a "keep it in mind" kinda thing. Thanks for the input guys, keeps the gears turning ,,lol
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Digz,
Have a look a Speedway Engineering. They have a good selection of sway bar components:
Ken
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Wow , I just got an algebraic brain overload there searching up spring rates..lol, Thanks ! ,, I'll keep the addy and give them a call when I get that far.
Joe
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No comment.
Last edited by tyrellracing (10/27/2012 6:05 pm)
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I'll just title this bagged pickups. Import and Domestic
RX-7 IRS
Last edited by Ralphy (1/10/2012 10:26 am)
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Toyota Supra IRS Bagger
Last edited by Ralphy (1/11/2012 9:46 am)
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Pagani Zonda R
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Here is an early Lotus, Elan, ifs/irs backbone with Chapman struts in the back.
"Make the suspension adjustable and they will adjust it wrong ......
look what they can do to a carburetor in just a few moments of stupidity with a screwdriver." - Colin Chapman
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Subaru
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Arizona Z Car Nissan/Datsun
Thanks Mike94531
Home Page
Last edited by Ralphy (7/07/2012 6:12 pm)
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Here's some Porsche pics.
Elephant Racing On Facebook
Last edited by Ralphy (8/14/2012 7:49 am)
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AC Ace
Last edited by Ralphy (8/14/2012 7:55 am)
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Dennis DeLap's Triumph-Powered 1967 TVR 2200 Special Racecar
Last edited by Ralphy (9/12/2012 8:36 pm)
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R160 Differential From Datsun 510
Ralphy
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OK this isn't a a IRS pic it's a front UCA. However check out how the Heims are located, I never saw them oriented above or below the centerline. Seems to me if you haven't any clearance issues, you could do the same on any control arm. Even if your control arms didn't have such a funky bend.
Ralphy
Last edited by Ralphy (11/23/2012 6:43 am)
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I came across this Honda 5 link page. I couldn't help to see one similarity to the Ford T5 IRS. A Watts type geometry.
Honda 5 link
Ford T5
Ralphy
Last edited by Ralphy (4/14/2013 6:39 am)
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AARGH!
Still no Sierra/Merkur pics.
A bazillion made, and no pics on the web.
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After MUCH searching I finally located a couple of useful Merkur IRS pics.
About 58" track when stock so still a bit wide for my use.
But also similar to the T-Bird but a bit lighter and fairly strong, seems to be good for about 300 HP in a light car.
Since it's English Ford/Sierra there are tons of LSD's and orther upgrades available.
Seems to be a fairly common swap into older cars in the U.K.
Most from this site,
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Z32 Nissan 300ZX
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OKAY, finally got my Merkur rear and some pictures.
4x108MM PCD, 60" mounting face to mounting face as best I could measure it.
Aluminum carrier with 3.64 gears and an open diff in the manual trans cars, automatic is a little taller.
Fairly heavy in stock form, still much lighter than Jag or 'Vette.
I will get weights of each component when I get it apart.
Forward cross member might make fitting fairly easy in some cars, or narrow it for others.
There is a rear two bolt mounting point on the diff cover as well, factory has a big rubber mount there.
Three mounting bolts at each side of the diff carrier so almos any sort of strong adapter should be possible.
As stock it uses unequal length axles with the common six bolt attachment, I will be looking for axles about 4" shorter per side.
Original springs sat in pockets integral to the lower control arms.
Original shocks mount to the back of the control arms.
All pretty standard and similar to most of the other modern IRS production cars I have looked at.
I always heard that these are "Rare" cars, but at this time I know of SEVEN in fairly local salvage yards.
This rear is as common as dirt in the U.K. and Europe, LOTS of goodie$ are available for it.
Mine started out filthy, begins to look fairly good once it's nicely finned aluminum castings become visible.
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I can never get these post to let me edit, so here is another try at putting up the pics.
Forgot to mention an important item above, the outer hub carriers are a bolt-on type so easily adapted to a custom upright.
Hoping I have enough different angles here to provide useful information.
I will provide measurements as soon as I can get them.
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Nice thread!
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nice
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the size is 65*85 is quite good for this