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  #16  
Old 10-09-2006, 04:37 AM
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Matt,
Can you explain some of the triangularization in the cage? Maybe it's just the camera angle, but it looks like they pulled two of the top points back to a single point (triangle) on the passenger's side rear.
Nice welds!
-Bill
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  #17  
Old 10-09-2006, 05:16 AM
dynomatt dynomatt is offline
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Bill,

First some definitions. These are commonly referred to cage part names.

Main Hoop - looks like a horseshoe, exactly in line with the B-pillar. Goes from the floor butted up to where the rear seat starts, following up the B-pillar to the roof, across the roof, then back down the other side.

Front legs - go from the top of the main hoop forward, along the roof line, then down to the front floor following the a-pillar line.

Rear legs - go from the top of the main hoop back to the rear strut towers usually in a straight line.

The cage is essentially a 6 point cage with extra bits. So there's the main hoop which goes behind my head goes from the floor up to the roof, across the roof, and back down to the floor. At the top going back, theres' two straight bars that go the rear strut towers. Then there's two front legs which follow the roof line, then come down following the windscreen pillar. There's also a bar that follows the top of the windscreen line joining these front two legs to box the roof.

The photo Cage 4 clearly shows the main hoop, running around the edge of the car, in line with the back of the door. It has a crossed diagonal in it. Looking like an X.

You can also see the roof diagonal which goes under the sunroof. This triangulates the box made by the top of the front legs, the top of the main hoop and the windscreen bar.

There's also a diagonal in the rear legs. These are the bars that go back from the top of the main hoop to the rear strut towers. These are kind of more visible in photo Cage 1 (but remember that's taken from the opposite side of the car just to confuse you).

There's also a rear bar going between the base of the rear strut towers. Kind of like a rear strut brace, but I'll loop the harnesses over that.

Then there's side intrusion bars which are a straight line running from the strut towers, down each side of the car, to the bottom of the front legs. These protect in a side impact.

He's also put some gussets between some of the 90 degree bends (they're the weakest).

Hope that helps. I can take more photos if it would explain it better.

Actually, here's a MS paint to try and explain. A 3 view, and then a 3D view...it's hard to do!

M
Attached Images
File Type: bmp Cage diagram.bmp (576.1 KB, 769 views)
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  #18  
Old 10-09-2006, 05:17 AM
dynomatt dynomatt is offline
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Here's the 3D...but I suck at MS Paint.

M
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File Type: bmp Cage 3D.bmp (576.1 KB, 663 views)
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  #19  
Old 10-09-2006, 05:53 AM
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A manual tranny would kill some weight.. and be twice as cool. Looks like an awesome project, I can't wait to see the end results.
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  #20  
Old 10-09-2006, 08:55 AM
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Matt,
It was the cross diagonal I was referring to. I was expecting a similar diagonal going to the passenger's side rear.



-Bill
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  #21  
Old 10-09-2006, 08:58 AM
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Looks nice, we'll get some comparison shots up after we get ours in this winter
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  #22  
Old 10-09-2006, 01:26 PM
dynomatt dynomatt is offline
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Bill,

Yeah right, sorry. My rules say I only need one cross in EITHER the rear legs or the main hoop. So I decided to go for the ones in the main hoop.

It's quite common for the crossed diagonals to be both in the main hoop and the rear legs (in fact most WRC cars have that)...but I just went for the one diagonal in the rear legs. I figure in a roll-over, the main hoop is where my head is at...the rest is more dead weight.

Roll cage design is a funny thing. I went in there with a bunch of things that I thought I wanted, but after looking at a few things, we agreed this is a good balance of cost vs safety.

I also didn't want to have one of those cages where tubes go everywhere, like spaghetti...the old girl is heavy enough without them!!

M
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  #23  
Old 10-09-2006, 05:58 PM
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Quote:
Originally Posted by dynomatt
Bill,

Yeah right, sorry. My rules say I only need one cross in EITHER the rear legs or the main hoop. So I decided to go for the ones in the main hoop.

It's quite common for the crossed diagonals to be both in the main hoop and the rear legs (in fact most WRC cars have that)...but I just went for the one diagonal in the rear legs. I figure in a roll-over, the main hoop is where my head is at...the rest is more dead weight.

Roll cage design is a funny thing. I went in there with a bunch of things that I thought I wanted, but after looking at a few things, we agreed this is a good balance of cost vs safety.

I also didn't want to have one of those cages where tubes go everywhere, like spaghetti...the old girl is heavy enough without them!!

M


-Bill
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Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023

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'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
'92(?) Laguna, 6 spd and other stuff (still at OT's place)
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  #24  
Old 10-09-2006, 06:13 PM
dynomatt dynomatt is offline
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Just pulled the rear bumper assembly off the car...50lbs ...why is this thing built so tough?

Hopefully I can gut the support a bit, like the front, and get about 25lbs out of it.

Also started painting the cage, and removed the factory rear muffler and towbar (good thing too, the bolts were loose from the installation, first tow with this and it would have ripped the bar out of the floor!)

M
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  #25  
Old 10-09-2006, 06:29 PM
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Quote:
Originally Posted by dynomatt
Just pulled the rear bumper assembly off the car...50lbs ...why is this thing built so tough?

Hopefully I can gut the support a bit, like the front, and get about 25lbs out of it.

Also started painting the cage, and removed the factory rear muffler and towbar (good thing too, the bolts were loose from the installation, first tow with this and it would have ripped the bar out of the floor!)

M
Matt,
Towbar? Can you post some pics? You're only the second person I can remember posting any mention about being able to mount a hitch to the SVX.

I believe the front and rear bumpers are as heavy as they are due to the U.S.'s 5mph impact requirement....

-Bill
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Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023

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'92 Fully caged, 5 speed, waiting for its fully built EG33
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'92(?) Laguna, 6 spd and other stuff (still at OT's place)
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  #26  
Old 10-09-2006, 07:14 PM
dynomatt dynomatt is offline
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Bill, it's a Hayman Reese bar. Not sure if they are an Australian company.

I'll try and get some photo's tonight or tomorrow.

M
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  #27  
Old 10-10-2006, 12:10 PM
cdigerlando cdigerlando is offline
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Awesome

Great Project! I am curious as to how you are going to extract more power? I'm also curious as to what you are going to do about your transmission. If you need any assistance let us know. I'm still working on my turbo project. Almost finished though.
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  #28  
Old 10-10-2006, 12:41 PM
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Matt, I just saw this today.
Great project!


pm sent.
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  #29  
Old 10-10-2006, 01:42 PM
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  #30  
Old 10-10-2006, 01:51 PM
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Quote:
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Matt, I just saw this today.
Great project!


pm sent.
Same with me great project, but how do you plan on getting 300+ hp out the eg33?
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