A spinoff discussion on LATCh

Maedze

New member
I was thinking about the variability of LATCH. In my Focus the lower anchors are sticking right up out of the seat. In some cars you have to dig around in the bite of the seat for them...they are really buried! And the angles differ tremendously, some are nearly upright and some are nearly flat.


And then in some cars the tether anchors are on the ceiling, some are on the floor and some are on the dash behind the seat. It seems to me all those different angles would put stress on the seat in different ways in an impact. Do CRS manufacturers test their seats with every conceivable top tether anchor angle?

Has there been any research on the differences?
 
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Patriot201

Car-Seat.org Ambassador
Wow. Those are interesting observations and outstanding questions!

I am assuming that manufacturers do test for those differences, but I am not sure. I hope someone comes along (a tech?) who knows. :)
 

Kabes

New member
And since we're discussing LATCH, in my car it seems to be one extra piece added to the seat assembly (a piece of metal with two "bumps" that stick out the front of the seat, and one "bump" that sticks out the back for the tether) so WHY, can't they put them in ALL 5 rear seating positions?
 

joolsplus3

Admin - CPS Technician
Loose government requirements (2 lower sets and 3 top anchors in most cars/vans/SUVs), and engineers doing their level best to fit all those things in along with seats and cargo space and sheetmetal restrictions have lead to the mishmash we have in all cars. It's not as simple as we think it should be, but it's definitely safe when the carseat's installed according to directions.
 

LISmama810

Admin - CPS Technician
I believe the sled they use for crash tests does not have variations for different LATCH/tether positions. I don't know for sure, though.

There was a discussion with someone...was it Deborah Stewart?...that someone linked to recently where she said that differences in cars might affect the way a seat performs in a crash. (I very well could be remembering that wrong.)
 

joolsplus3

Admin - CPS Technician
The LATCH discussion with Deborah Stewart is in a sticky thread in the top of the articles/reviews forum :)
 

LISmama810

Admin - CPS Technician
Oh, and to clarify, I think if any configurations were UNSAFE, that would have been discovered by now...or maybe vehicle manufacturers test their individual setups (not with every seat, of course).

When I said that seats might perform differently, I didn't mean that some might fail--just that the way they move, etc. might vary slightly, but not necessarily in a bad way.

Didn't mean to freak anyone out :)
 

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