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Based on the SK chats we know that they have never tested with a dummy weight that exceeds 35lbs, so even they have no way of knowing how the seat will perform at 40lbs.
Gypsy -> Special Events - CEU Chat Session: Will SK be testing the Radian rear facing to 40 pounds?
Carseatengr -> Special Events - CEU Chat Session: That is a little complicated as the H-III 3 yr old atd is 35 lbs with full instrumentation. The next sized ATD is the 50 lb 6 yr old - so it is very hard to test just to 40 lbs. I will say the Radian is very very stable rear facing - using the 3 yr old atd our rear facing angles are very low
I don't know how long ago those chats were, but you'd think that they came up with a 40 lb dummy for the MR testing, so maybe it's not that difficult anymore anyhow?
I wouldn't count on seeing the seat until the new year even IF it passes testing at 40lbs.
Heck, maybe MORE seats will be out with 40 lb. weight limits by then
I'm curious about how Graco tested the My Ride, definitely!
However, not to be the contrarian, but I really don't think there's a 40 lb dummy - dummies take about 10-15 years to devleop and are extremely expensive (an instrumented 10YO dummy costs about $100,000). I saw a GM safety engineer present on test dummies a few months ago, and I don't recall that she said anything about a 40 lb dummy being in the works. (Perhaps Jeanum or Brie might remember more clearly.)
Nope . They only use the 3 yo dummy for the FF seats. It's possible they also do some mathematical extrapolation to make sure a 40 pound child still will be fine in the seat in a crash, though. Seats rated higher than 50 pounds don't really have to meet any specific criteria except staying intact in a crash (but I assume they do meet their own internal rigorous criteria, like Sunshine Kids 80lb dummy exceeds the testing standards set for seats with lower weights easily).
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