Anyone used the longitudinal outer clamshells on a street car?, Time for hard choices |
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Anyone used the longitudinal outer clamshells on a street car?, Time for hard choices |
Superhawk996 |
Mar 22 2020, 06:46 PM
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#1
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914 Guru Group: Members Posts: 5,878 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Curious if anyone has use the outer longitudinal clamshell reinforcement on a street car?
Did you have any unforseen down stream effects to other panels like the door jamb, or the rocker panel? Also thickens the upper flange and I'm wondering if this will cause fit issues later with the door stripping, or maybe even the cosmetic sill plates. Starting to seem like this might be a good idea for race car prep but probably not ideal for just trying to fit up replacement sheetmetal and still have OEM fits. (IMG:style_emoticons/default/idea.gif) I'm not in love with the additional weight either. I can keep mocking up additional pieces but thought I'd see what the collective wisdom of the forum knows. |
Tdskip |
Mar 23 2020, 05:56 AM
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#2
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Why not interior bracing?
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Superhawk996 |
Mar 23 2020, 06:23 AM
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#3
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914 Guru Group: Members Posts: 5,878 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Why not interior bracing? Bulkheads within the longitudinal box section would be highly effective to improve torsional bending (twist). However, with the heater tube in there (again this is a street car - I want heat) there isn't enough room for an effective bulkhead. The reality is that the way the longitudinals connect to the wheel wells and the front of the door frame, the clam shell won't do much to resist torsional bending. The clam shell might help vertical bending incrementally but probably not much as we might think. Most of that vertical bending stiffness comes from the longitudinal box section itself, not the metal thickness. That is the beauty of unibody vs. a solid frame. Stiffer AND lighter. Might be time to sit down and do the math to understand exaclty what it's worth. However, in my case, as I mocked it up last night, I can see the clearnace to the front door edge is getting uncomfortably close. Had an idea last night when going to sleep about how to address it. I'll try to post a picture or two tonight after work. |
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