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-   -   Roll Bar for daily driving (http://www.njfboa.org/forums/showthread.php?t=64381)

BonzoHansen 12-27-2013 01:00 PM

Quote:

Originally Posted by sweetbmxrider (Post 896921)
Either your face hits the steering wheel or side window or your head tries to go there and paralyzes you instead. Both are good choices.

I'll take A of those choices. I've already done the 45mph head on into a truck that decided to make a left while I was entering the intersection going straight. Which I'd guess is a pretty typical street accident as far as speed & impact. I did not hit the steering wheel or get hurt, I had the OE 3 points on. Front of the car crumpled as best a 2nd gen is designed to. In fact you have to look for fatigue cracks in used 2nd gen hoods at the crumple points in front of the hinges. The hood in my back yard off the 81 Z I stripped has cracks.

http://img.photobucket.com/albums/v3...6211114479.jpg

btw the brand new S10 4x4 got totaled lol. I drove home. I could have had it all repaired including a new RR qtr panel for $2500. I should have!

BonzoHansen 12-27-2013 01:02 PM

Quote:

Originally Posted by LTb1ow (Post 896923)
That was my thought, stock 3pt belt will slow you down but odds are, I would get a face full of steering wheel. Otherwise, 5pt would hold my body tight and neck/head would take shock.

how fast do you intend on driving in the street that you plan to stretch the OE belt that far?

LTb1ow 12-27-2013 01:07 PM

Quote:

Originally Posted by BonzoHansen (Post 896926)
how fast do you intend on driving in the street that you plan to stretch the OE belt that far?

Not fast at all, I drive the exact speed limit for the most part these days. Old person status.

Just curious on the tradeoff between a 5pts protection from body moving into roll bar, vs body held tight and head/spine taking all the shock.

Again, just bored at work and curious about the topic.

BonzoHansen 12-27-2013 01:09 PM

Quote:

Originally Posted by LTb1ow (Post 896927)
Not fast at all, I drive the exact speed limit for the most part these days. Old person status.

Just curious on the tradeoff between a 5pts protection from body moving into roll bar, vs body held tight and head/spine taking all the shock.

Again, just bored at work and curious about the topic.

no roll bar in front of you in 4/6 point setups, so non-concern. your seat should take car of movement backwards, they are designed to do that. That is why car seats got mandatory head rests in the 70s due to whiplash injuries. And old car guys that remove seat tops for the cool look are insane.

put your engineering hat on. Why do OEs still use 3 points and supplement with airbags instead of some other method? It isn't cost.

LTb1ow 12-27-2013 01:13 PM

Quote:

Originally Posted by BonzoHansen (Post 896928)
no roll bar in front of you in 4/6 point setups, so non-concern. your seat should take car of movement backwards, they are designed to do that. That is why car seats got mandatory head rests in the 70s due to whiplash injuries. And old car guys that remove seat tops for the cool look are insane.

put your engineering hat on. Why do OEs still use 3 points and supplement with airbags instead of some other method? It isn't cost.

Your head can still travel up and back into the main hoop from a real bad rear end or angle rear shot. I don't think a 3pt would keep you secured enough for that motion IMO.

Logically speaking a 3pt is more idiot proof than a 5pt harness and much easier for a EMT/fire crew to cut you out of the car.

BonzoHansen 12-27-2013 01:36 PM

Quote:

Originally Posted by LTb1ow (Post 896929)
Your head can still travel up and back into the main hoop from a real bad rear end or angle rear shot. I don't think a 3pt would keep you secured enough for that motion IMO.

Logically speaking a 3pt is more idiot proof than a 5pt harness and much easier for a EMT/fire crew to cut you out of the car.

that would be quite a wreck to take move the body up and back. which in my thinking gets back to 80/20. what you describe to me sounds like a 20%er while the wreck I was in is an 80% example. And my neck did not snap. Seat choice matters, as well as exactly where that bar is behind you. And where NHRA wants it.

Egress is a discussion we have not had. That was one of the interesting takeways for me talking to Ron last month. He said his drivers practice getting out of the car. Another thing that seemed perfectly logical but I had never thought of. Harness, HANs, smoke, cage bars, I imagine it can get quite tense getting out of a car. Imagine someone else trying to get you out of a burning car if you are wearing a harness, which is unfamiliar equipment to most people.

LTb1ow 12-27-2013 01:40 PM

So it seems a good compromise (other than price wise :lol:) is to get solid mounted, non folding, high backed chairs, and mount the bar hoop as far back as legal via NHRA. Then run a 5pt harness and stock 3pt harness for street use.

Question then is, at the track, why do they not care about your neck injury just skull injuries? Assuming cause requiring a very pricey HANS device would be out of the question?

BonzoHansen 12-27-2013 01:46 PM

Quote:

Originally Posted by LTb1ow (Post 896933)
So it seems a good compromise (other than price wise :lol:) is to get solid mounted, non folding, high backed chairs, and mount the bar hoop as far back as legal via NHRA. Then run a 5pt harness and stock 3pt harness for street use.

Question then is, at the track, why do they not care about your neck injury just skull injuries? Assuming cause requiring a very pricey HANS device would be out of the question?

I cannot speak to what drives NHRA rules, they may be outdated, no idea. But I'm not sure how many front-enders you get into on a drag strip so maybe the rules skew towards different types of accidents. I really don't know..

i did some googling on HANs and tripped on this: http://www.autoracing1.com/goodboys/001031HANS1.htm
http://www.autoracing1.com/images/20...ar/hd2_200.jpg
http://www.autoracing1.com/images/20...ar/hd1_200.jpg

WSex 12-27-2013 04:36 PM

At the track what are you expecting to hit head on? Other than island.... I think keeping the oe belts for street and 5 pt for tracks is best bet.

LTb1ow 12-27-2013 07:01 PM

Quote:

Originally Posted by WSex (Post 896940)
At the track what are you expecting to hit head on? Other than island.... I think keeping the oe belts for street and 5 pt for tracks is best bet.

The wall on either side of me...?

Have you seen any cars hit it? I saw one knock a jersey barrier a few feet, then bounce down the track..

WSex 12-27-2013 07:15 PM

Quote:

Originally Posted by LTb1ow (Post 896943)
The wall on either side of me...?

Have you seen any cars hit it? I saw one knock a jersey barrier a few feet, then bounce down the track..

key word. head on. unless you launch facing the wall.. possible.

LTb1ow 12-27-2013 07:22 PM

Quote:

Originally Posted by WSex (Post 896945)
key word. head on. unless you launch facing the wall.. possible.

Yes, he 90* from something and nailed a wall head on.

Its possible.

WSex 12-27-2013 07:35 PM

idk man. pick your poison..... tie a rope from the main hoop to your helmet and enjoy.

LTb1ow 12-27-2013 07:39 PM

I got all winter to pick it, just wanted to hash out some thoughts I had on the topic.

BonzoHansen 12-27-2013 07:50 PM

Quote:

Originally Posted by LTb1ow (Post 896946)
Yes, he 90* from something and nailed a wall head on.

Its possible.

Plan for the 80%....

LTb1ow 12-27-2013 07:51 PM

Quote:

Originally Posted by BonzoHansen (Post 896949)
Plan for the 80%....

You do know whose car this thread is about? Lets be serious here. :rofl: Anything is possible.

WildBillyT 12-27-2013 08:28 PM

Quote:

Originally Posted by WSex (Post 896940)
At the track what are you expecting to hit head on? Other than island.... I think keeping the oe belts for street and 5 pt for tracks is best bet.

Expecting to hit dead nuts? Maybe the wall, maybe the guy that swerved into your lane by accident. **** happens.

sweetbmxrider 12-28-2013 10:03 AM

Yeah you could tbone someone or get out of the groove and take a hard turn into the wall.

sweetbmxrider 12-28-2013 02:28 PM











Accidents suck.

LTb1ow 12-28-2013 05:18 PM

Nice vids, pretty eye opening.

Guess I will stick to feeling safe in mai truck and live dangerously in the car.

Dudbird113 12-28-2013 11:44 PM

I know a while back a kid in my town (adult now) got his 4th gen sawed in half by a pole behind the driver seat. Both of them survived.

The_Bishop 12-29-2013 12:36 PM

Maybe stupid but somewhat relevant question; does a 6 point require the bar behind the seat for NHRA legality?

sweetbmxrider 12-29-2013 01:50 PM

Quote:

Originally Posted by The_Bishop (Post 897013)
Maybe stupid but somewhat relevant question; does a 6 point require the bar behind the seat for NHRA legality?

What bar? There is a diagram posted in here that shows helmet position relevant to the hoop. The crossbar is for seat bracing and belt attachment.

WildBillyT 12-29-2013 03:09 PM

Quote:

Originally Posted by The_Bishop (Post 897013)
Maybe stupid but somewhat relevant question; does a 6 point require the bar behind the seat for NHRA legality?

Crossbar? Yes. It can not be removable, either.

The_Bishop 12-29-2013 03:55 PM

Yeah, I meant the crossbar behind the seat. Don't understand why they don't make it removable, seems like it would encourage more safety equipment use if it didn't impact so badly on the streetable aspects of a car.


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