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Thread: Takata 5-pt. harness install

  1. #1
    2,000 rpm - light wheelspin, no bog here! marlonthegreat's Avatar
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    Takata 5-pt. harness install

    after two months of waiting for the crotch strap portion for a 5pt. Takata harness conversion, install pix for reference

    Since I fabricated a custom seat bracket, I welded the nut that came with the eyebolt under the rear brace of the bracket instead of drilling a hole on the flooring just what like everyone suggests.


    2012-06-28-125 by marlonmercado77, on Flickr


    2012-06-28-123 by marlonmercado77, on Flickr


    2012-06-28-126 by marlonmercado77, on Flickr

    The position of the eyebolt is about 4"-5" away from where the hole on the bucket seat, notice the white line, that's the center of the hole of the bucket seat. This position gives me just about the right length for the crotch strap when fastened to the harness buckle.


    2012-06-28-127 by marlonmercado77, on Flickr


    2012-06-28-128 by marlonmercado77, on Flickr


    2012-06-29-130 by marlonmercado77, on Flickr


    2012-06-29-133 by marlonmercado77, on Flickr

    The harness that I got was specifically for a two seater (part no. MPH341w) so length of the shoulder harness was not an issue


    2012-06-29-134 by marlonmercado77, on Flickr

    the installation of the side harnesses were pretty basic, the right eyebolt bolted to where the OEM seatbelt buckle was originally placed


    2012-06-29-135 by marlonmercado77, on Flickr

    and the left eyebolt bolted to where the OEM seatbelt is likewise placed.


    2012-06-29-137 by marlonmercado77, on Flickr


    2012-06-29-132 by marlonmercado77, on Flickr
    MIATA...incredibly fun to drive - as that is its only purpose for being.

  2. #2
    2,000 rpm - light wheelspin, no bog here! NAautoxer's Avatar
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    nice "idea" but not legal for most any organization. they require it sandwhiched through the floor. at that point, your hoping that thin piece of 1/8 inch steel will actually hold you in place. if you've ever seen the aftermath of an on-track incident, you wouldn't even attempt this..

    there's a reason why everyone "suggests" drilling through the floor. it's so you don't die when you actually need your harness.. ;)

  3. #3
    2,000 rpm - light wheelspin, no bog here! moerdogg's Avatar
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    That's a nice healthy moment arm on the weld in the case that high loads are applied to it. Same with the mounts on the upper cross-bar. At a minimum (and totally agreeing with NAautoxer that the only legit way to do it is a floor mount with sandwich plates), I would recommend a welded bracket that mounts the eye in-line with the load. You get a ton more weld area, and avoid side-loading the eye (take a look at the load rating on those, the side load is usually a fraction of the max rated in-line load).

    img-120629073629.pdf - Adobe Reader.jpg

  4. #4
    4,000 rpm - entering the fun zone wannafbody's Avatar
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    Also the shoulder harnesses should be wrapped around the harness bar.

  5. #5
    2,000 rpm - light wheelspin, no bog here! xjdesertfox's Avatar
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    That looks extremely dangerous. And whats up with that harness bar?

    Are you new to welding as well? Why did you weld in the non-contact surfaces? Your weld is held together with filler...
    Follow me as I build a Canyon/Track car on a college budget. -----> CLICK ME

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