zx9rc1 wrote:I've never worn HANS myself, so can you answer a question? How easily can you remove the tethers? I was thinking that maybe the spring, when it bounced around after hitting him, might have knocked one of them loose.
You have a sprung collar with a central post, the collar is depressed and the strap buckle is slid over and under a lip on the post, the force of the sprung collar pushes the buckle into the lip on the post. You have to depress the collar all the time whilst removing the strap and it takes two seconds at least.
A quick direct impact would have to be at exactly the right angle and sustained to allow the buckle to come adrift and even then the buckle would have to unseat itself from the post. I cant think that this could happen unless the clip or the post was broken. They are immensely strong though. You would need a direct blow with a sizeable hammer to break it.
Sorry was trying to take a pic of my lid to show you the Hans post but didnt know how to post the image as I dont have pic hosting[/quote]
Also all Hans fitments have to be certified before you can use them on a helmet by helmet basis