TRD supercharger

When I see stud threads cutting through the airbag material as I remove it from it's old mounting position, that's my reassurance that it'll be alright.

Yeah man. I wish I could mount it elsewhere, but the way everything worked out forces me to place it there. :/ oh well I guess. I have been brainstorming other mounting solutions, but this will have to do for the moment.

 

Need a passenger roof quick T-Top mod.

 

The pull out strength of even low grade steel fastenets is insane compared to the forces you are talking about. Many thousands of pounds of force. Check it out, there are some strength of materials references around. Needless to say the bolts will win every single time, no question.

In fact mathemaically speaking, the floor of the cab would yield first. Whichever portion wasnt sitting on frame.

 

Too bad mythbusters got cancelled. Lots of strong opinions on this one.

Calculate the force necessary to move 100 kg of weight 10 feet in the air in less than a second. It's not a small number either. I certainly wouldn't risk it either way.

 

That's something people here are missing about the airbag. The pressure in the bag is super low, around 5 PSI IIRC, but the speed and force at which the gas deploys the bag before it's full is the problem. This is why people were dying from the very first airbags that came out that didn't account for all of the variables in a crash. People were hitting the bag while it was still inflating rapidly and dying. Scary shit.

If you stuck an airbag under the seat and it's in a weird position, I have no doubt it could cause some damage. Would it launch the seat in the air? Likely not. It could weaken the chair or floor structure in some way though and in a roll over the goes around a few times that's not good.

 

That's pretty much what I was talking about. I don't see a bolt snapping from it, but I think in an impact the deploying airbag could potentially lift the chair enough to pull the bolts from the body lol and there are enough forces in play already during an impact, I wouldn't want the addition of an airbag going off right under the chair.

@12TRDTacoma Rob, I just don't wanna see you get fucked up if you got in an accident or set off airbags during one of your hucks and your chair falls off in the cab because of it lol.

 

From here:

http://www.chemistry.wustl.edu/~edudev/LabTutorials/Airbags/airbags.html

F = 3.33x104 kg·m/s2 = 33.3 KN for a 2.5 kg airbag.

If the bag is 1 kg divide by 2.5 since mass in this equation is directly correlated (F=mass x acceleration). That would be ~ 11 Kilonewtons of force.

That's a good chunk of force. More than enough, if applied awkwardly, to bend the seat frame off from the bolts or do some other not so great damage during a crash.

 

Adam and Jamie hated each other. Lol

 

Yeah, I heard that they were both glad to be done with each other. They loved the show but they usually didn't agree on how to do a lot of the tests between themselves. When you work with someone for 12 years on a show though that can happen.

Still too bad. I could see "airbag under a seat" being a myth they would test... I'd watch just to see what it would take to put the seat through the roof (because of course they would do that too once the science stuff was done.)

 

Although we are getting off topic, oh well. Myth busters has always been one of my favorite shows but the most recent seasons I'd say up till (2011?) started to suck and didn't really tackle "myths" anymore - seemed they tried to go for ratings with "oh let's just blow stuff up" whereas I enjoyed more of the "Coke and mentos exploding stomach" experiments.

 

I am a mechanical engineer and also have experience with structural and mechanical analysis. I can assure you that those bolts will not break. I would bet my life on it.

 

Just as an example 11KN is equal to about 2,500 lbs of force. Assuming those are grade 5 bolts the yield (not breaking) strength is about 120,000 psi. Those bolts look to be about 5/16 diameter nominal (a little less actually) they have a yield strength of about 30,000 pounds each. Even given many factors such as direction and sheer and such, those bolts will be just fine.

In the world of mechanics and steel, even thin steel, 2,500 lbs of force is not a lot.

 

I suddenly want to experiment lol.

 

We need Justus and Rock Lobster.

 

Supercharger threads are not the same without Rock Lobster.

 

anyone know where to get the A pillar gauge plastics

 

I am actually more inclined to believe your analysis over anyone else's in truth. If you say it's fine, I won't even question it anymore than is being.

On top of that, I have seen how soft the material for the seat side airbags are first hand. They are seriously almost as soft as tissue.

The following specs are on the seat brackets and their mating fasteners:

3/16" steel for the seat brackets, grade 8mm x 1.25 bolts, washers and nuts.

Stock bolts holding down the seat brackets. Most likely grade 5.

 

I'm serious about testing it at some point. You never know until then what may give. To be honest a big part of my job is on the testing end. I do a lot of work problem solving what went wrong when everything should of went right on ag chemical applications. With anything designed or created you never totally know until you try break it what will happen.

Next time I see a wreck on a farm I'm good friends with I'll see if one of the seats and a side impact bag is still intact. A bit of wiring and a car battery should make for a quick test of what happens when a side impact bag goes off under a seat. .

 

The practical side is just as important as the on paper side I do agree.

 

What happened to Justus I'm trying to @ him but don't see his name.