Roll Cage, Back Bracing |
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Roll Cage, Back Bracing |
Randal |
Feb 2 2009, 08:18 PM
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#1
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
What is the minimum amount of bar that would need to be added from the back towers to the transmission cross member? Understanding that I am running a bar from the back hoop of the cage to the shock tower.
Could I just run a bar from a plate on the rear side of the shock, midway to the top of the transmission cross member? Just a simple triangle. Would that help? Picture below. |
PeeGreen 914 |
Feb 25 2009, 12:16 AM
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#2
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Just when you think you're done...wait, there is more..lol Group: Members Posts: 10,219 Joined: 21-September 06 From: Seattle, WA... actually Everett Member No.: 6,884 Region Association: Pacific Northwest |
From what I gather is Chris is saying the X is bad as it really bring two bars to a single bar strength at the intersection. The RX8 looks to actually be two bars that do not cross though. Chris? (IMG:style_emoticons/default/popcorn[1].gif)
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ChrisFoley |
Feb 25 2009, 01:43 PM
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#3
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I am Tangerine Racing Group: Members Posts: 7,958 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
From what I gather is Chris is saying the X is bad as it really bring two bars to a single bar strength at the intersection. The RX8 looks to actually be two bars that do not cross though. Chris? (IMG:style_emoticons/default/popcorn[1].gif) Yes! QUOTE The problem with the simple X bar is the lack of weld surface area. Basically you have the small weld area at the point of contact on either side of the tube. That is the point of failure. By adding the gussets you increase the surface area of the weld ten fold. Not exactly. The point of failure is the single bar thickness at the center. The weld heat affected zone (HAZ) on either side just creates stress risers where a crack can start more easily. From there the single tube just tears in two. Taco gussets on top and bottom will put a lot of metal at the center that would also have to tear for the joint to fail. |
Chevota79 |
Feb 25 2009, 04:09 PM
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#4
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Member Group: Members Posts: 83 Joined: 11-September 07 From: Rocklin, CA Member No.: 8,113 Region Association: None |
What are all you guys using for your main cage material 1.5"x.120? or .095....DOM?
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