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Re: 1972 Blazer 3-Point Seatbelt w/ Roll Bar Options
Quote:
Originally Posted by hemi43
It's laser cut from most likely 1018 steel and the "hoops" bent up.
The problem with this design is that in a seat belt application all the force will be put right on the bent part of the hoops which looks to have a material thickness of around (1/8") X 1/4", and also, that area is further weakened due to work hardening when it was bent.
Tensile strength of 1018 steel is around 60000 PSI, so each one of those bent corners has a tensile strength of 1875 LBS.
If two of those corner fail, so will the seat belt. A car accident could generate 50G, so your 200LB body could weigh over 10000 LBS.
I could go on, but I'm sure you can see where I'm going with this.
Don't use these for seat belts unless you have a death wish.
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Hemi, I agree with everything you said, makes sense
Just have to find an alternative solution
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Semper Fi...Uncle Sam, you da man
All parts offered to help are free, unless otherwise noted
Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST
AS usual, off topic
They say your mind goes second, can't remember the first
Jim
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