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Thread: New Roll cage Questions

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  1. #1
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    One more point about the horizontal tube in the main hoop being the LONG distance fron your seat/shoulders. Shoulder belts STRETCH a GREAT during a frontal impact/crash. You do not want that long distance that you now have. The longer the shoulder belt the longer they will stretch. Also with the vertical distance of the horizontal tube be sure the height is correct relative to your back plane/shoulder height per the GCR/manufactures shoulder belt guide lines. Please google Issac head & neck restraint & watch the video of their sled craches. You'll say to yourself, WOW, with a great deal of understanding.

    We ALL like to do things OUR way. If you have an acquaintance with some race car experience please use him/her as a mentor. You'll be ahead in the end
    Last edited by ddewhurst; 08-07-2009 at 08:27 AM.
    Have Fun ; )
    David Dewhurst
    CenDiv Milwaukee Region
    Spec Miata #14

  2. #2
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    Oct 2004
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    What area are you located in?. If you are close I will bend you new front down tubes if you buy the material. I am in NC.
    Steve Eckerich
    ITS 18 Speedsource RX7
    ITR RX8 (under construction)

  3. #3
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    im in NJ
    1996 VW Golf VR6

  4. #4
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    One more point about the horizontal tube in the main hoop being the LONG distance fron your seat/shoulders. Shoulder belts STRETCH a GREAT during a frontal impact/crash. You do not want that long distance that you now have.
    Not saying that this is inaccurate but somewhat interesting as Gulick and I noticed that in the new BMW AMLS car they showcased, the belt mounting point was waaaaay back. If I recall correctly, in the trunk or thereabouts.
    Dave Gran
    Real Roads, Real Car Guys – Real World Road Tests
    Go Ahead - Take the Wheel's Free Guide to Racing

  5. #5
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    IT.com "First Loser" Greensboro, NC USA
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    Quote Originally Posted by gran racing View Post
    Not saying that this is inaccurate but somewhat interesting as Gulick and I noticed that in the new BMW AMLS car they showcased, the belt mounting point was waaaaay back. If I recall correctly, in the trunk or thereabouts.
    Mount per your belt manufacturer's directions. Some use polypropylene, others nylon. They have different stretch characteristics.

    K

  6. #6
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    Only one tube can connect directly to the firewall, but you could still run a triangulated brace that connects to that tube right at the firewall. That would give you much better foot protection and still adhere to the letter of the law.

  7. #7
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    Quote Originally Posted by Gibson View Post
    Only one tube can connect directly to the firewall, but you could still run a triangulated brace that connects to that tube right at the firewall. That would give you much better foot protection and still adhere to the letter of the law.
    I'm about to go read this all for myself, but it seems that some would disagree... :/
    Chris Rallo "the kid"
    -- "wrenching and racing" -- "will race for food!" -- "Onward and Upward"

  8. #8
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    Quote Originally Posted by Gibson View Post
    Only one tube can connect directly to the firewall, but you could still run a triangulated brace that connects to that tube right at the firewall. That would give you much better foot protection and still adhere to the letter of the law.
    Thats exactly what i will be doing in that area.
    1996 VW Golf VR6

  9. #9
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    Some ideas, easy to do.
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    Jake Gulick


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