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Old 12-02-2012, 08:52 PM   #91
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Oh and btw, I ordered new Hanson Offroad bumpers and Warn 9.5 cti-s winch which will be here next week for my 2013 JKU Rubi.

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Old 12-02-2012, 11:14 PM   #92
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Quote:
Originally Posted by lo lo
Thanks for all the comments everyone. As for your question Kappaknight, the airbags didn't deploy. The on scene folks said it was probably due to the fact I had heavy duty bumpers. Vehicle airbags are not meant to deploy until a sufficient amount of force or impact is applied to the area of the vehicle that contains the sensors. The force of the impact has to meet or exceed the predetermined set point for deployment. My front bumper barely had a few scratches, even though it tore through the rear of that toyota corolla. So the sensors probably never reached that set point to cause airbag deployment in front. Had the semi hit me on the side, my side airbags in the seats would of deployed. If I had hit something head on first, I am sure the front airbags would of gone off.
As I understand it, the airbags deploy based on deceleration rate, not impact force.

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Old 12-02-2012, 11:25 PM   #93
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Originally Posted by Nanook

Mgola,
You are looking at this all wrong. You need to look at it as a multi car accident. Most new cars are unibody with built in crumple zones, those will absorb the impact and the vehicle with the steel frame and bumpers will use that plastic bumpers and unibody vehicle to transfer the impact as they crumple. Now if you run into a concrete block with your steel frame and bumper you are going to be hurting. I am more worried about other drivers than concrete blocks. In two years when my daughter turns 16 you can bet she will have a Jeep with steel bumpers, so if someone runs into her or she into them they will know it.
I understand this, but now you're changing parameters. You are now assuming the other vehicle is either not modified in a similar fashion, or is new enough to have the proper energy absorbing materials.

What if you hit another Jeep with steel bumpers?

For me, I'd still prefer my vehicle deflect and deform as designed to protect who's inside.

For the record, I don't think the steel bumpers are more/less dangerous. I just think big steel bumpers do not help in a high speed impact. In low speed, absolutely.

Happy Jeeping!
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Old 12-03-2012, 12:49 AM   #94
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I believe it's a gyroscope and accelerometer that is in the middle of the jeep that detects when ur air bag should deploy. Its not actually a sensor behind the bumper or on the side of the jeep. So wether it's a steel or plastic bumper shouldn't affect if ur air bag goes off.

As well, the plastic on the stock bumper is just for show and is not a primary ssfety device. Its the steel beam and crush cans and crumple zones behind the plastic that save you. So I don't believe that switching to an after market bumper will affect this as long as u keep the crush cans.

Just my $.02

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Old 12-03-2012, 01:55 AM   #95
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^ This.
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Old 12-03-2012, 08:08 AM   #96
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Quote:
Originally Posted by mgola27 View Post
As I understand it, the airbags deploy based on deceleration rate, not impact force.
Do you know where we can get more info on this? I've always thought they were just sensors that need to be punched in as well.
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Old 12-03-2012, 08:35 AM   #97
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Negative. The airbags have g sensors in them. depending on vehicle velocity and deceleration (negative g force) will determine whether or not they will deploy. It's not just a dumb crush sensor, they are pretty advanced and require some processing to fire them
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Old 12-03-2012, 09:34 AM   #98
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It's not just a dumb crush sensor, they are pretty advanced and require some processing to fire them
some processing... or a jaws of life as depicted at the 1:30 mark.

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Old 12-03-2012, 09:53 AM   #99
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Showing to fiancée how could she let me cruise around with stock bumpers when the aftermarket could save my life! Goo thing you had a four door I don't know if the two door people would be here to talk about it now
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I'm so lost.......
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My good sir, I shall be showing this to my dearly betrothed. I do not comprehend how she could let me drive around this fair city with just the original equipment manufacture bumpers when the highly refined metalurgist at Hanson bumpers create aftermarket bumpers that could be preventing my untimely demise via their incredible tensile strength! It is an unbelievably joyous event that you do own a Jeep consisting of four doors, I'm quite unsure that if you had been in a Jeep of only two doors you would still be here to relate your cautionary tale to us. Please have a good day and enjoy the bathing in the glorious magnificince that is Jeep.
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Old 12-03-2012, 12:40 PM   #100
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Quote:
Originally Posted by kappaknight

Do you know where we can get more info on this? I've always thought they were just sensors that need to be punched in as well.
Read my post 2 above yours.



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Old 12-03-2012, 11:39 PM   #101
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do you think the crumple zones worked as planned here:

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Old 12-04-2012, 09:00 AM   #102
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do you think the crumple zones worked as planned here:

To be completely and utterly fair about it, potato.
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Old 12-05-2012, 11:16 PM   #103
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Originally Posted by FreezerJeep View Post
I believe it's a gyroscope and accelerometer that is in the middle of the jeep that detects when ur air bag should deploy. Its not actually a sensor behind the bumper or on the side of the jeep. So wether it's a steel or plastic bumper shouldn't affect if ur air bag goes off.

As well, the plastic on the stock bumper is just for show and is not a primary ssfety device. Its the steel beam and crush cans and crumple zones behind the plastic that save you. So I don't believe that switching to an after market bumper will affect this as long as u keep the crush cans.

Just my $.02

Bryce
Those "crush cans" as you call them have nothing in them. I removed my bumper in a write-up and the stock bumper is thin garbage, designed to crush I suppose as you said. But looking at Lo Lo's accident pictures clearly shows that aftermarket bumpers do help far more than stock. Every situation is different but I'd rather have what she had than stock any day of the week.
http://www.wranglerforum.com/f33/jk-...al-133532.html
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Old 12-05-2012, 11:25 PM   #104
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My new Hanson front winch guard stubby bumper for my 2013 JKU Rubi and Warn 9.5 cti-s winch are in. Just waiting on the rear w/tire carrier. Oh, and I am a "he" not "she".... lol
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Old 12-05-2012, 11:31 PM   #105
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lo lo, do/did your jeeps have side airbags, if so do you think they are something valuable to have in a JKU?
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Old 12-05-2012, 11:32 PM   #106
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My new Hanson front winch guard stubby bumper for my 2013 JKU Rubi and Warn 9.5 cti-s winch are in. Just waiting on the rear w/tire carrier. Oh, and I am a "he" not "she".... lol
sorry, I remember seeing a female soldier next to it and I thought that was you. My bad.
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Old 12-05-2012, 11:36 PM   #107
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hey guys, do you think its a good idea to add a third roll seat in my jku?


on a serious note im glad you are ok
3rd row? Can you imagine if he would've had that and someone was sitting there? I think these pics are enough for me to decide against adding one.
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Old 12-05-2012, 11:40 PM   #108
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No worries BlackOpsJeep. That is my wife next to my wrecked JKU. Lol We are both in the Army...
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Old 12-06-2012, 05:29 AM   #109
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Quote:
Originally Posted by BlackOpsJeep

Those "crush cans" as you call them have nothing in them. I removed my bumper in a write-up and the stock bumper is thin garbage, designed to crush I suppose as you said. But looking at Lo Lo's accident pictures clearly shows that aftermarket bumpers do help far more than stock. Every situation is different but I'd rather have what she had than stock any day of the week.
http://www.wranglerforum.com/f33/jk-...al-133532.html
That makes me like how easy my TJ bumper comes off even more. 6 bolts and its off.
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Old 12-06-2012, 05:42 AM   #110
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You're extremely lucky to walk away from that with minor injuries. With the increased G-load on your body from hard steel bumpers, you're increasing the risk of bodily injury. Typically in a crash, an intact front/rear clip is what you don't want to see.
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Old 12-06-2012, 05:46 AM   #111
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the plastic on the stock bumper is just for show and is not a primary ssfety device
The plastic on the bumper is actually used for low speed impacts (such as in a parking lot) to absorb all the impact.
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Old 12-06-2012, 05:54 AM   #112
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In low speed, absolutely.
Soft bumpers help in low speed too. Like I said in the post before, they're designed to crush to keep the force away from your body. I read a post about someone who got into a fender bender in his old Thunderbird. He was reversing out of a parking spot and hit someone else who was also reversing out of his parking spot. The increased g-load from hard steel parts caused him to break his wrist on the steering wheel.
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Old 12-06-2012, 07:25 AM   #113
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As others have said, I'm happy to see you are ok. On the bright side you get to mod a new Jeep. Make it as tough as the last one.
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Old 12-06-2012, 09:25 AM   #114
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lo lo, do/did your jeeps have side airbags, if so do you think they are something valuable to have in a JKU?
I did have the side airbags on my 2012 JKU that was wrecked. I also have them on my new 2013 JKU. I believe they are worth the upgrade in case of a side impact. Hope I never have to use them.

My new JKU Rubi, mods coming soon!

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Old 12-06-2012, 12:14 PM   #115
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3rd row? Can you imagine if he would've had that and someone was sitting there? I think these pics are enough for me to decide against adding one.
I have an OEM third row seat with OEM seat belts in my JKU and feel totally safe with my kids in it. Obviously, third row seats can be a danger in other vehicles too if hit by a semi-truck but I am 43 and very cognizant on cars around and behind me and don't worry that much about it. I highly doubt a 4-runner's third row seat would fare any better and it was designed to be there. When a mass like a semi hits you at that speed, there's not alot you can do about it. In any case, my kids love the 3rd row seat, especially when the top is off!
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Old 12-12-2012, 03:07 AM   #116
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I did have the side airbags on my 2012 JKU that was wrecked. I also have them on my new 2013 JKU. I believe they are worth the upgrade in case of a side impact. Hope I never have to use them.
Yeah. I wish my 2007 had side airbags. I'd rather slam the side of my head into an air bag instead of a seat belt bracket.
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Old 12-12-2012, 10:20 AM   #117
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I have an OEM third row seat with OEM seat belts in my JKU and feel totally safe with my kids in it. Obviously, third row seats can be a danger in other vehicles too if hit by a semi-truck but I am 43 and very cognizant on cars around and behind me and don't worry that much about it. I highly doubt a 4-runner's third row seat would fare any better and it was designed to be there. When a mass like a semi hits you at that speed, there's not alot you can do about it. In any case, my kids love the 3rd row seat, especially when the top is off!
OEM? I had no idea that was an option on the JKU. The only thing I've seen on 3rd row stuff is people talking about adding them themselves.
Anyway, I agree, any 3rd row seating that's against the tailgate would not have faired any better.
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Old 12-12-2012, 10:59 PM   #118
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OEM? I had no idea that was an option on the JKU. The only thing I've seen on 3rd row stuff is people talking about adding them themselves.
Anyway, I agree, any 3rd row seating that's against the tailgate would not have faired any better.
YES, OEM. I got ahold of a 2dr JK rear seat and had a weld shop make identical brackets so the seats snap in to along with the OEM seat belts. The seat sits several inches in front of the tailgate but again, I don't worry about that since this weld shop will be making me a custom removable roll bar that will protect from rear collisions. Obviously lo lo had a nasty hit by a semi and nothing short of a tank will be unscathed but hits like that are rare. Based on my driving history and age, my risk is low.

Here is my write-up:
http://www.wranglerforum.com/f33/oem...ml#post2513081
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Old 01-28-2013, 02:19 PM   #119
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"The force was great enough to shear off my driver and rear passenger seat brackets that hold the seats to the floor."


This concerns me greatly.....
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Old 01-28-2013, 02:43 PM   #120
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I am so glad to hear you are Ok. What direction were you going? That could have been me. Those ^&$#!! semis come flying out of Tijeras Pass like the own the place. I do not have enough fingers and toes to count how many times I have seen these big rigs come flying through and almost cream me and I am going 70 in a 65. Now for those big rig drivers that are on here I know there are respectable drivers out there but there are too many bad drivers that soil the reputation of all drivers. When you drive something that big you have to be smarter, sharper and better than all the other drivers.

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