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  1. #1
    CPS Fanatic mlohry's Avatar
    Join Date
    Nov 2009

    Installation with seat belt and LATCH

    I know this is an unsafe practice and forbidden, but a friend told me today that she was doing it to keep the seat "really tight." Is it not ok just because the 2 may get in the way of each other not allowing the seat to be tight or is there other reasons, just wanted a good explanation.
    Monica-former CPST, now just a car-seat safety freak.
    Samuel, 12 yrs, seat belt middle passenger row of our Odyssey.
    Mitchell, 10yrs, back row, Amp.
    Lucy, 6 years, booster. All of us occasionally ride in a Honda Fit.

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    April, 2001

  3. #2
    Senior Community Member Baylor's Avatar
    Join Date
    Jun 2010

    Re: Installation with seat belt and LATCH

    I was told once because it was not tested that way.
    Maybe send her here.. But there may be a thread about it. It is meant to use either or. I swear there was one seat where it was okay though?? Or am I losing it more than I thought????

    ETA: Found this

    ETAA: From Wendy
    "Because it's not been tested that way, or it's been tested and failed. None of us are willing to turn our kids into crash test dummies to see how it works. It may be the best thing ever. Since every single carseat manufacturer says don't do it, though, I have to guess they've tested it and it's not worked as well.

    It may be like two outfielders. Each system is tested to take crash forces. But if you put them together you've got two ballplayers running toward the ball. In the end the ball ends up on the grass and your ballplayers have black eyes from slamming into each other. LATCH is supposed to stretch up to 20% in a collision. So is the seatbelt. If neither has the full crash put on it, neither may stretch. And now those crash forces, instead of being absorbed by the LATCH strap or seatbelt, need to go elsewhere. And the only elsewhere to go is into the seat where your child is sitting, magnifying crash forces and possibly causing more injury to the child in the seat.
    A five stepper and a booster rider

  4. #3
    CPS Fanatic Brianna's Avatar
    Join Date
    Feb 2011

    Re: Installation with seat belt and LATCH

    I like Wendy's baseball analogy

    (Unless of course your friend happens to be installing a Combi in a Ford- this is the only combination that allows for use of LATCH and the seat belt)

    The godkids are growing!
    J 9/09 and J&A 1/15

  5. #4
    CPS Fanatic Keeanh's Avatar
    Join Date
    Apr 2010
    Salmon Arm, BC

    Re: Installation with seat belt and LATCH

    If "it wasn't tested that way" isn't enough, then maybe point out that seatbelts are designed to stretch a certain amount. By doubling up with a LATCH strap, the install might be TOO solid and the child would be subjected to greater forces.

    If she HAD to bungee jump, would she rather jump with the proper stretchy rope tested for her weight? Or would she ask for 2 or 3 of them together? I think common sense would tell her that 2 together wouldn't stretch enough and she'd likely be injured or killed.
    17yrs, 15yrs, 13yrs, 11yrs , 9yrs (58", 75lbs, Incognito), 7yrs (46", 50lbs, Dreamtime), 5yrs (41", 35lbs, RN), 3yrs (30lbs, RF Marathon), NB (Peg 4-35)
    '14 Mazda5, '06 Chevy Express, '08 Toyota Tundra



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