Thought I would post up some images of my ITR race car. It is a work in progress but I think it is coming along nicely. I am building it for a local series here in Utah and I also hope to get to some time attacks as well.

 

Looks good.

Do you mind telling me how you removed the door beams?

Also, are there no mounting plates where the rear support tubes are welded to the unibody?

I like how you did the tubing going to the front shock mount towers. I'd like to do that on my Prelude, but I'm not sure how I'd go about doing it!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">I like how you did the tubing going to the front shock mount towers. I'd like to do that on my Prelude, but I'm not sure how I'd go about doing it!</TD></TR></TABLE>

I don't think there is enough room to do it like that on the prelude..

 

Looks good!
Nice A pillar gusset
Keep it up.

 

Damn that's badddd. keep us updated.

I like the way you did the x-bar from the A-pillar to the rear strut towers.

 

looks even better in real life. cage is a work of art. puts mine to shame. hope i can keep up next year.

 

i spy a gtr??!?!? nice work by the way...cage looks sick

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">Also, are there no mounting plates where the rear support tubes are welded to the unibody?</TD></TR></TABLE>
yea, thats interesting. a box there would be nice. the rest looks good. those doorbars look like a pain in the *** to get in and out, but super safe.

 

Great cage! I also love the apillar gusset...and great idea tieing in the firewall & front tower mounts

 

pics of the gtr in the back please

 

Thanks for the comments! I had the cage built by Competition Associates and let them got to work and design the cage the way they thought was best. They build cars for Speed World Challenge, Grand Am, Knoi challenge and several other series.

That is a R34 GTR (good eye) in the background. My friend recently bought it. The motor ended up being bad and so was one of the turbos. He is keeping at my shop while the machine work is being done to the block.

The integra should be ready for paint here soon will up date soon!

 

Amazing. Thats one of the best integra cages I've ever seen. Great work!

edit: Just noticed you were from Lehi. I lived in Orem last year and was in Lehi a good bit. Pity I didn't know you were out there.

 

x2 on the awesome cage, keep up the good work and keep this thread going with updates!!

 

That cage is incredible.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by get RIGHT &raquo;</TD></TR><TR><TD CLASS="quote">That cage is incredible. </TD></TR></TABLE>

if i was going to wreck i would love to wreck in that car

 

There are actually several bars that I would change.



The x bars that go from the shock towers to the dash bar. They should not go to the middle of the dash bar. That is an unsupported bar, and will not be very strong. They should go to the end of the dash bar. You should never end a bar in the middle of another bar without a load path through it.



You also have no bars along the bottom of the cage along the floor. This will greatly increase the strength of the cage. An open sided u shape is not strong at all, finish off the "box" and put a diagonal in it, it will be MUCH stronger.

You should also put a bar in between the rear shock tower and the base of the main hoop. Will make a big difference in strength here.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MightyMouseTech &raquo;</TD></TR><TR><TD CLASS="quote">
They should not go to the middle of the dash bar. That is an unsupported bar, and will not be very strong. They should go to the end of the dash bar. You should never end a bar in the middle of another bar without a load path through it.

</TD></TR></TABLE>

Here, here. This is so true, I wish people read some basic structural engineering books before they embarked on projects like this. Also, if you look a World Rally cars, they never weld a tube to the middle of another tube, only to the hard points. And if you look closely the triangles are almost all equilateral which is the stiffest triangle structure.

I read an SAE paper on the cage for a NASCAR stocker and the they broke down each tube relating to how much stiffness it adds to the structure. Guess which tube affected the stiffness of the cage the most? You would probably never guess it but it was the two roof tubes connecting the A-pillar to the B-pillar!

 

Thats real nice!

 

what race series allows tie-ins to the front strut toers like that?

 

It's legal in Honda Challenge with a weight penalty.

 

the cage was built by competition associates in salt lake city. who is also responsible for the build of many grand am, speed world challenge gt, and touring cars. they also just took 5th overall and first in class out at the 25 hour race at thunderhill....................i think i would stick with their design.

http://www.competitionassociates.com/

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ginsu2k &raquo;</TD></TR><TR><TD CLASS="quote">

I read an SAE paper on the cage for a NASCAR stocker and the they broke down each tube relating to how much stiffness it adds to the structure. Guess which tube affected the stiffness of the cage the most? You would probably never guess it but it was the two roof tubes connecting the A-pillar to the B-pillar!

</TD></TR></TABLE>

Technically speaking, if we are talking about the same research done at Clemson that revolutionized the way a cage and stress factors were looked at when building a race car cage/chassis. There is not "2" tubes connecting the A to the B, but the strength lies in that tube being the now popular "halo" single bar.
As far as NASCAR chassis's go, the biggest boost in handling in the "modern" non-production car days of NASCAR came from arguably...the "petty" bar named for the first team to run it. The tube extends from the cross bar in the main hoop out to the right front lower portion of the front clip.

As far as this cage goes...sorry but i'd fail it through a tech inspection if i were the one doing the inspecting (I'm not claiming to be an authority by any means). The rear down tubes and crosses don't attach to an approved base plate. Unless it's so small I don't see it...which would mean a failure by any tech inspector i've met anyways. Not to mention that sheet metal there isn't that thick...a strong hit could tear it out causing a big mess if you know what i'm saying.

 

thats going to be one stiff *** ride!

 

How much weight did this cage end up being all together? Did you weigh the car-static and then with the cage? What was the difference?

 

Good luck with the build.

Any more photos of the GT-R parked in front of it?