Roll Bar Connected to Windsheild
I am swapping roll bars with the person who purchased my old Miata (they didn’t like the diagonal) and I plan on powder coating it before reinstalling (black). While researching things to do while bar is out, I have come across a few pictures of Miata's with a couple additional braces running centered from the top of the roll bar to the top of the windshield. I have a few questions:
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yes
yes yes 1-guy with a mariner blue car |
Thank you for the quick reply, but was looking for a bit more detail.
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4 Attachment(s)
Originally Posted by hustler
(Post 542682)
yes
yes yes 1-guy with a mariner blue car Watch your noggin if you plan to drive on the street....thats the only reason I'm not going to cage my car.... Attachment 199147 Attachment 199148 Attachment 199149 Attachment 199150[/QUOTE] |
That's very badass!
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Looks cool as hell, but I just know I'd take a hacksaw to it the first time I smacked my head on it.
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You're going to put a big moment on those welds for the top bar if you ever do roll it over. There isn't much strength in the windshield and it will still want to crush. Seems like a good chance the top bar would break too.
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Originally Posted by AutoFreak57
(Post 542784)
You're going to put a big moment on those welds for the top bar if you ever do roll it over. There isn't much strength in the windshield and it will still want to crush. Seems like a good chance the top bar would break too.
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Maybe if there was a hoop welded alongside the windshieldframe where this bar would connect. Make it real close to the frame and remove the trim pieces so you can get it welded in properly. This will allow you to still use the latches and it wont be so intrusive. Then you're only a few pieces of tubing and some doorbars away from a full cage.
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i agree... thats just going to add a point load to the middle of the windshield frame and crumble the windsheild.
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I was planning on doing this to my car as well! mainly to get rid of the vibrating of the window thingy (that shit annoys the piss out of me when the top is down!
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Originally Posted by shlammed
(Post 542850)
i agree... thats just going to add a point load to the middle of the windshield frame and crumble the windshield.
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2 Attachment(s)
Examine the first picture
Then examine the second I agree there is a better design but its far better then just a roll bar. |
What door bars are those in the red car? ^
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Originally Posted by dgmorr
(Post 542893)
What door bars are those in the red car? ^
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I can't see how in a roll over those bars wouldn't just fold down into the cabin. That would be a really bad day if those bars came down onto your shoulder.
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Originally Posted by SKMetalworks
(Post 542882)
Examine the first picture
Then examine the second I agree there is a better design but its far better then just a roll bar. |
Originally Posted by levnubhin
(Post 542908)
I can't see how in a roll over those bars wouldn't just fold down into the cabin. That would be a really bad day if those bars came down onto your shoulder.
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That setup looks like it would cost as much as a full cage.
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I don't completely agree with your stress analysis of it. Any force in the connecting bar will get brought back straight to either the windshield or the roll bar. It is still the same basic scenario. It might add a little strength, but if the car rolls, the windshield is still collapsing.
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