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Motronic
Nov 6, 2009


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Grimey Drawer

General_Failure posted:

What happens when a small domestic LPG tank is heated a lot anyway?

BLEVE

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Motronic
Nov 6, 2009


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Grimey Drawer

JD Brickmeister posted:

They were kind of able to do it by rigging a gun to shoot a hole in the bottom just as the tank started to bulge. It went maybe 60 feet, then started spinning because it didn't have stabilizer fins.

Yeah...lame.

I've shot a 1/2 full one with a .308 round from about 75 yards. It basically stays within 20 feet of where it was hit, but make a hell of a fireball for a very, very brief time. (this is hitting it in the middle at ambient temperature)

Take my advice, you want to do this at more than 75 yards. But it's not terribly spectacular. Getting a safety valve to fail and the tank to BLEVE is the real horror show that you don't want to be within a 1/2 mile of.

Motronic
Nov 6, 2009


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Grimey Drawer

Farside posted:

have no idea what is involved with passing hazmat for DOT is but some of the people that drive for us I wonder how they remember to breath.

It's a 35 question multiple choice test. If you can remember that you need to keep a bill of lading and MSDS with the truck at all times, that you need to put placards on all sides of the truck based on what's on the manifest, not put dangerous mixed loads right next to each other, and that you need to stop at RR crossings you're good to go.

FYI, this is all you need for driving most radioactive material as well.

As a long time hazmat technician for emergency response, I was horrified that this was all the driver's were expected to know to get the endorsement.

Motronic
Nov 6, 2009


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Grimey Drawer

Nerobro posted:

It's funny what people consider "low pressure."

4psi will rip most houses clear off their foundations.

Well, that is low pressure.

For 4 PSI to be able to do this, it needs a mechanical advantage. This is how lifting (air) bags work. Its not like a 4 PSI blast out of a 1/4 nozzle is some sort of death ray.

Motronic
Nov 6, 2009


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Grimey Drawer

Nerobro posted:

I was using an extreme example. But pumping liquid N20 is going to be a 5-800psi pump. :-) I mean, that's low pressure if you're messing with 6000psi tanks of n2 all day long, but it's still amusing to hear it called low pressure.

I see what you mean now.

Well, that's all context. 2216 PSI air cylinders are considered/called "low pressure" by fire departments, because our new ones are 4500 PSI.

Motronic
Nov 6, 2009


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Grimey Drawer

teh jhey posted:

Is there a homeowner's equivalent of the AI Stupid Question Thread?

Yep.

Motronic
Nov 6, 2009


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Grimey Drawer

Epic Fail Guy posted:

True love is a carbon fiber 2.2 on a 4.5 frame

HOSE MONKEY SPOTTED

Motronic
Nov 6, 2009


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Grimey Drawer

D C posted:

Yeah I always I at least wear glasses, or a face shield when there's no way around getting hit.

A Dremel is one of the few things I actually wear safety glasses for. There's something with Dremel disc shards and material shavings that is apparently attracted directly to my face.

Motronic
Nov 6, 2009


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Grimey Drawer

PainterofCrap posted:

it quiets down a little (from Cummings to sewing machine full of sand) and then immediately starts smoking oil out the tailpipe.

So you broke her car. Got it.

Good thing this wasn't recently or you would have gotten sued.

Motronic
Nov 6, 2009


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Grimey Drawer

EightBit posted:

The car was already toast, the oil rings were probably gone, hence the immediate smoking. Don't get your panties in a wad.

Someone has a broken sarcasm detector.

Motronic
Nov 6, 2009


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Grimey Drawer

Ola posted:

You were right though, if speaking from the perspective of her lawyer.

Glad you have demonstrated your through understanding of the sarcasm in my post.

Motronic
Nov 6, 2009


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Grimey Drawer

meatpimp posted:

Someone has a broken panty unbuncher.

Touché.

Motronic
Nov 6, 2009


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Grimey Drawer

Ola posted:

Have we not been maintaining them properly?

It's a British Leyland part, sorry.

Motronic
Nov 6, 2009


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Grimey Drawer

lazer_chicken posted:

Perhaps it's a center diff from some kind of awd system?

Almost looks like aircraft brakes to me. The few I've seen have separate pads between the discs, but I'm no expert by any means. Maybe this is a different style.

Motronic
Nov 6, 2009


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Grimey Drawer

Epic Fail Guy posted:

I'm glad they actually used PPE, but foam on a simple car fire? Must be nice to have money to waste.

Some departments use foam on car fires because it will go bad sitting in the tank before we get to blow our loads on a real job.

Yes, I've been a volley in some really sleepy towns.

Motronic
Nov 6, 2009


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Grimey Drawer

Sponge! posted:

Hot enough to vaporize the rad, but the tires didn't pop?

Happens all the time. Heat goes up. The fire load is on top and the front of the motor, as well as in front of the radiator (plastic grille). When it's really burning, it often makes a chimney effect that draws air through the wheel wells, actually cooling the tires.

Motronic
Nov 6, 2009


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Grimey Drawer

some texas redneck posted:

I thought they used foam due to the chances of magnesium burning in a car fire?

Foam doesn't help one bit with magnesium. Foam is still mostly water, and all it does is make pretty colors when you hit it with water. Unless you hit it with A LOT of water. Dirt and sand and some shovers is always a better plan.


NOTinuyasha posted:

How did you come to know this?

I am a trained fire investigator and the Fire Marshal (which makes me the chief investigator and enforcement authority) of a small town. I've also been a firefighter in one capacity or another (volley or paid) for almost 20 years. I started when I was 18.

Motronic
Nov 6, 2009


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Grimey Drawer

JD Brickmeister posted:

Well I have driven past a handful of automobile fires, including a spectacular RV fire where melted plastic was literally pouring out of the back of the vehicle. So I appreciate all your "qualifications", but I think I know a little bit about what I am saying, bub.

You're totally right. I'm sorry.

Motronic
Nov 6, 2009


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Grimey Drawer

EightBit posted:

That is far too long to patch.

Motronic
Nov 6, 2009


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Grimey Drawer

JD Brickmeister posted:

Why isn't it coated in oil

That could be the backstory.

Motronic
Nov 6, 2009


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Grimey Drawer

The Scientist posted:

Where would one want to put the oil pressure gauge?


Would using assembly lube eliminate the need to prime the pump, or do you do that for other reasons?



....learning....

On most motors there will be a port in the front cover/oil pump area where you can thread a gauge in. It might be the factory sender location, so you pull that and put your shop gauge on for the test.

Assembly lube + getting oil circulating is the best plan. In combination, not one or the other. The assembly lube is there to keep things from getting scratched up for the short period of time before you get oil everywhere its supposed to be, as well as to get the sacrificial coating of zinc (ZDDP) you need on high pressure parts like cam lobes and flat tappets.

Some oil pumps are a bitch to get primed after a tear down. The one I'm working on now is notorious (Buick 215-derived Rover V8), and most people actually fill it full of vaseline while assembling to help get the prime started.

Motronic
Nov 6, 2009


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Grimey Drawer

GnarlyCharlie4u posted:





Motronic
Nov 6, 2009


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Grimey Drawer

thereifixedit.jpg

Motronic
Nov 6, 2009


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Grimey Drawer

Splizwarf posted:

What is PennDOT always doing out there loving up traffic then? Are they subcontracted by whatever state entity owns the Turnpike? I always thought PennDOT owned it.

The Pennsylvania Turnpike is owned by the....wait for it...wait for it....Pennsylvania Turnpike Commission. They fight with PennDOT like carts and dogs, as PennDOT has been trying to take over or get millions of dollars of highway funding back from PTC. They owe them something like $450 million dollars a year now, and all they get is some lousy maintenance.

The bonds issued to build the turnpike were paid off on schedule and it should be a free road now according to the bill of goods sold back then. Surprise, that's not going to happen.

Motronic
Nov 6, 2009


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Grimey Drawer

atomicthumbs posted:

The stuff floated downstream and the local salmon-based non-profit had dozens of volunteers out for months scooping the stuff out.

I'm not sure how soap bubbles can last for months.......

I think you're misremembering something here.

Motronic
Nov 6, 2009


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Grimey Drawer

Godholio posted:

It's not soap.

That was sarcasm, but only to a point.

Most firefighting foam is primarily hydrocarbon and fluronated surfactants with some glycol ether to stabilize it and act as a solvent.

Regardless of what kind it is, the foam doesn't last for months.

Yes, I am a fire investigator.

Motronic
Nov 6, 2009


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Grimey Drawer

evobatman posted:

Is this one of those turnpikes owned by a sovereign wealth fund through a bunch of shady companies that Matt Taibbi writes about?

Not yet. They have been trying to sell it off to a private company to raise money for the satecommonwealth budget for a few years though....

Motronic
Nov 6, 2009


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Grimey Drawer

Geoj posted:

I would argue that if the PA turnpike was well-maintained the tolls would be justified.

I agree with you completely. I'd be happy to pay reasonable tolls. Two problem with that....as you pointed out, it is not well maintained. In addition, the amount of money they raise in tolls is rumored to be well beyond what they would actually need to properly maintain it.

Motronic
Nov 6, 2009


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Grimey Drawer

meatpimp posted:

Basically anybody not you is a bad driver.

I think we can all agree with this. Those of you who agree are also wrong, because it only applies to me, but at least you're close.

Motronic
Nov 6, 2009


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Grimey Drawer

Holy crap. Not a railroad guy by any means, but it would seem that a track that isn't used often that obviously hasn't had a visual inspection in a few months would be some sort of pucker factor.

Motronic
Nov 6, 2009


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Grimey Drawer

Sponge! posted:

That's a horrible mechanical failure of a sentence, I think.

Oh, well that makes more sense at least. Like I said, not a RR guy at all. Just looks kinda puckery to me.

So does "inspect" mean "let's see if this sombitch derails as we power on through!"?

Motronic
Nov 6, 2009


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Grimey Drawer

Short bus. The term you were looking for is short bus.

And that's hilarious. I want one.

Motronic
Nov 6, 2009


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Grimey Drawer

Skyssx posted:

That was amazing. Looking under the Raptor, though, you would think it could do just about anything.

Not if you really look under it, like on a lift. A friend of mine has one and I was at the shop when it was up. The first thing I saw was the conspicuous lack of frame boxing where it just got too "hard" to do easily. I wasn't aware of this issue, but as soon as I saw that picture I though of exactly that spot on his frame.

Once again, they've done a half-assed job of gussying up something off the line with a bunch of bolt ons. Be rest assured, they will follow the SVT playbook of not fixing it for existing owners yet it will be redesigned correctly next year/two years from now, just like the 02-ish Lightning debacle.

Motronic
Nov 6, 2009


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Grimey Drawer

meatpimp posted:

The Raptor thing is going to be a huge event. Reading through one of the linked threads, 14 Raptor owners had a get-together. 10 went away with bent frames. This isn't something Ford is going to be able to deny for long.

Just you wait and see. I would again like to remind you of the 02 Lightning motor, as well as the 03-04 PowerStroke 6L.

I like Fords, and I've owned them for years. But they have a history of pulling crap like this, sticking the early model holders with a problem which they don't acknowledge, and fixing it on subsequent model years.

Edit: I'm going out to look at an 03 powerstroke today. I'm an idiot. But I might be able to get it for drat near scrap iron price, so.......yeah, I'm still an idiot.

Motronic fucked around with this message at 13:41 on Jul 7, 2011

Motronic
Nov 6, 2009


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Grimey Drawer

^^^^^ nice one in the post above!....that's a different problem on newer trucks with the 6.4 PowerStroke though


Wojcigitty posted:

Can you elaborate a little on these problems? I wasn't able to find anything specific with a little bit of googling.

Lightning: inadequate spark plug thread depth. They would blow out (never addressed). Intercooler issues (that one was addressed via recall), and piston slap (never addressed).

6.0L PowerStroke (all of them, but especially 03-04): FICM dies, constantly. This is the fuel injection control module, which is right on top of the motor. It gets hot and the solder joints break/discreet components smoke. You end up with a no start condition. Also, the EGR cooler rots out, and you end up with black coolant. The EGR cooler and oil cooler need to be changed as a unit. This is pretty much expected at about 100k miles or so. It costs you about $3k in parts to replace it all with factory parts, although a lot of people just block the EGR and cooler and there are several places that reman the boards in the FICMs.

Motronic fucked around with this message at 14:36 on Jul 7, 2011

Motronic
Nov 6, 2009


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Grimey Drawer

Shroomie posted:

This isn't just limited to Lightnings, either. My mothers '00 F150 blew two out in a matter of months, and a friends Mustang has blown one out.

True, it was just worse on the Lightnings. The other thing that definitely wasn't limited to them is the piston slap. My 4.6l '97 pickup has had it (mostly when cold) for a good 150,000 of its 220,000 miles.

You can find problems like this with any car company. But Ford consistently does this crap on "special" models that people are obviously paying a premium for, and then doesn't stand behind them.

Motronic
Nov 6, 2009


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Grimey Drawer

The Scientist posted:

What did Katrina do to SUV sales?

The average US gasoline price was $2.50 the day before Katrina. In the following weeks, prices were as high as $6/gal in places like Georgia. The prices never really went all the way back down again.

Motronic
Nov 6, 2009


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Grimey Drawer

JD Brickmeister posted:

In Italy

Is there anywhere in Europe where this is not the case, other than crossing the chunnel?

Motronic
Nov 6, 2009


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Grimey Drawer

Cat Terrist posted:

I *HAVE* driven cars with front drum brakes, unlike almost everyone else here.

You really think MOST people here have never driven a VW Beetle or a 70's pickup?

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Motronic
Nov 6, 2009


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Grimey Drawer

IOwnCalculus posted:

Yes, that's a pretty safe assumption. Seeing as, across full-size trucks, GM went front disc in 1971, Dodge in 1972, and Ford in 1973, it's also pretty safe to say most AI posters have never driven a truck without at least front discs. Hell, I never actually drove my '70 with front drums on it myself, we did that conversion before I could drive.

Here's where and why I'm off on this: I never owned a 1/2 ton truck until the late 90s. Both my 74 F250 and 78 F350 had drums all around. My friends Chevys had drums all around. But we were landscapers and contractors, so we all had 3/4 ton and larger trucks.

So....my bad.

But also I'm apparently old.

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