Not exactly Mythbusters
 

but it does strike close to home, or at one of our own.
<iframe width="560" height="315" src="https://www.youtube.com/embed/G7_Aa8pbM7Y" frameborder="0" allowfullscreen></iframe>

Interesting & total surprised by the results.

Any idea what multi grips he was using to tighten the air line on the ram?
(They were chromed with a pivot ratchet system)

I'm not surprised. I fast-forwarded, but would have been nice if he used a torque wrench to show how much force it took to release jack stand.

Knipex plier wrench

https://www.knipex.com/fileadmin/sit...03180-00-1.jpg

Yeah, how much force it took to release, and then bumping the pressure up to see if you could still do it at much more weight. Still, I think you're have to be bracing your body against that level or intentionally trying to pry it up to get it to release while you were under the car.

Interesting stuff.

yep....

Thanks Steve. Great looking design.

Not sure how that would ever happen when you're under a car. It's not like you bump it with your elbow and it drops.

I don't consider that result a 'failure' of the jack safety system.

I liked the music. :)

Worth thinking about for sure, but this seems like the build up to a roll out of his own line of new and improved jack stands.

Better design already exists. From Pelican:
ESCO Heavy Duty Jack Stands - PelicanParts.com
Strong and safe. What is your head worth?

Had a 914 I accidentally knocked off a jack stand while under it when I was in my 20's. I bench pressed the 914 and quickly rolled out from under it.

For real...

My mom worked in a chicken processing factory back in the 70s. Two young guys she worked with were fixing an old car and they used concrete cinder blocks to hold it up.
They were both underneath it when the cinder blocks failed & they didn't make it.

I was about 12 at the time and I'll never forget the funeral :(.