jujumum
Well-known member
I don't understand the weight restrictions on car seats. Are the weights just reflective of what was tested, or indicate that a failure occured when the weight was exceeded?
The Britax Multi Tech can be harnessed longer rf by 15lbs than ff:
• Certified for rear facing use 9-25 kg. (20-55 lbs)
• Certified for forward facing use 9-18 kg. (20-40 lbs) with harness
• Certified for forward facing use 15-25 kg (33-55 lbs) with seat belt
All of the convertible car seats in the US that I can think of ff at higher weights than rf.
The Frontier doesn't rf at all, but it harnesses ff from 25lbs to 80lbs (40lbs more ff harnessed than the MT).
The Marathon only goes up to 35lbs rf, but can go 30lbs more ff (65lbs, which is 25lbs more ff than the MT).
Apparently Russ with SK said that the 35lb RA is the same design as the 33lb RA.
I don't understand. If the physical forces on the child in an actual crash are much less rf, then why do most car seats have a higher ff limit than rf?
Why does the MT go to lower ff weights than the FN and MA?
Is all of this just because car seat testing is really expensive, and the manufactures only test for what they consider to be marketable numbers? So is that why the MT doesn't go higher than 40lbs ff? Is it just becase they didn't test it higher?
Is there data out there that indicates what happens when a 45lb test dummy is rf in a seat that is labeled 35lbs rf and 65lbs ff? Or, is it just that this hasn't been tested, and therefore is not safe?
The Britax Multi Tech can be harnessed longer rf by 15lbs than ff:
• Certified for rear facing use 9-25 kg. (20-55 lbs)
• Certified for forward facing use 9-18 kg. (20-40 lbs) with harness
• Certified for forward facing use 15-25 kg (33-55 lbs) with seat belt
All of the convertible car seats in the US that I can think of ff at higher weights than rf.
The Frontier doesn't rf at all, but it harnesses ff from 25lbs to 80lbs (40lbs more ff harnessed than the MT).
The Marathon only goes up to 35lbs rf, but can go 30lbs more ff (65lbs, which is 25lbs more ff than the MT).
Apparently Russ with SK said that the 35lb RA is the same design as the 33lb RA.
I don't understand. If the physical forces on the child in an actual crash are much less rf, then why do most car seats have a higher ff limit than rf?
Why does the MT go to lower ff weights than the FN and MA?
Is all of this just because car seat testing is really expensive, and the manufactures only test for what they consider to be marketable numbers? So is that why the MT doesn't go higher than 40lbs ff? Is it just becase they didn't test it higher?
Is there data out there that indicates what happens when a 45lb test dummy is rf in a seat that is labeled 35lbs rf and 65lbs ff? Or, is it just that this hasn't been tested, and therefore is not safe?