Quote Originally Posted by jimalley View Post
I am thinking that the center net would be effective in restricting arm movement, but cannot imaging it retraining head movement. I use a Hans that restricts forward movement but imagine without side restraints that the head is tossed about severely in an incident.
Actually, the center net should be installed to spread from the shoulder to the CG of the helmet, catching both. I used to have a pic on my website showing this, lemme see if I can find it...

Some pics here...
http://vaughanscott.com/construction/safety.htm

OK, not a perfect picture, but should give an idea about the install config.


Note that I'm not fully cinched down in the seat yet - will sit a bit lower than even that. Plus the camera angle's a little high. When I lean over to the net, it does contact my helmet.

I've "used" it in this config, too, having been t-boned by a Volvo at the ARRC in '08. Worked like a charm, drove it away and completed the race.