After realizing that getting a halo seat into a GEN 5 ACR without cutting door panels and/or floor is most likely never going to happen (I still haven't fully given up on it, but its starting to look like Mission: Impossible), I researched head restraint devices. Seems like most people go with either HANS or Necksgen. I have spent a few hours researching each device and came down to this:
* HANS is less comfortable to wear, has no lateral and angled impact protection, but has excellent front impact protection.
* Necksgen is more comfortable to wear, _claims_ to have lateral neck support, but does not stabilize the head in a frontal impact as well as HANS device does.
Looking at the following video https://www.youtube.com/watch?v=RFlmJHP2o90 I see that with Necksgen in a frontal impact scenario the driver's head goes WAAAY more forward and down than I would feel comfortable with. I have a herniated disc in my cervical spine, so having my head reach my belly button during a frontal collision sounds like a trip straight to an operating table. Looks like the Necksgen device does not have those vertical "fins" that go down the front of the torso and this is what allows the driver's head to dangle way too far forward. The irony of the video is that it's advertising a "RESTRAINT" device, yet the voice says that "Drivers will have a feeling of total freedom." Seems like they cant even make up their mind
On the other hand, having a HANS device without a halo seat would mean absolutely zero lateral impact protection.
What do you guys think? Looks like a "damned if you do, damned if you dont" scenario to me.
There are a few other wrinkles. One is that I will have a Teamtech 6-point harness installed in the car, so I need to make sure that 3" belts will work with the device I buy. I know that there are some methods for folding 3" belts into 2" size, but not sure how comfortable this is going to be. The second wrinkle is that I will retain all the airbags, which will inevitably go off during a collision. I have no idea what is going to happen in that scenario.
EDIT: Almost forgot, I also found one video that shows that HANS device still has some degree of protection in a 90 degree impact: https://www.youtube.com/watch?v=U1gLMXmdjfg
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