Reply by dakremer

That’s what I was looking for Doss. I wasn’t sure what the standard was for chair backs. It seems like the hinge will technically function, but just might not meet standards. I think I understand your calculations, and it seems right.

If I upgrade to the metal hinge (which has 1200 in-lbs of torque) that would give me 100 lbs at 12”. At 16” each hinge will have 75lbs support. Multiply by two (hinges) and u get 150lbs at 16”.

The top of my back rest will only be about 14-16” away from fulcrum.

I need to find out the standard for “medical” equipment

-- Hey you dang woodchucks, quit chucking my wood!!!!