Today in "Trucks You Don't Want to Argue With"

"Distraxi's idea of perfection is a Jagroen" (distraxi) 12/16/2019 at 14:51 • Filed to: dotpl

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5000 gallons of liquid nitrogen. Enough to ruin anyone’s day.

benn454 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 14:59

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 Just the thing for when you're being chased by a memetic polyalloy killer robot from the future. 

E90M3 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:00

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10,000 lbs  of 36 baume HCl, offloaded by me about 4 years ago.

HammerheadFistpunch > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:02

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user314 > E90M3 12/16/2019 at 15:03

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¿Que?

For Sweden > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:03

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Nitrogen is scary stuff

user314 > benn454 12/16/2019 at 15:05

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Winter in Montana be like:

Sammyno55 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:05

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Or, make a serious amount of Dippin' Dots!

Sammyno55 > For Sweden 12/16/2019 at 15:07

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Protip, next time the tire jockey tries to upsell you to 100% nitrogen, ask about the charge for 78% nitrogen instead. It should save you at least 22%.

gmporschenut also a fan of hondas > benn454 12/16/2019 at 15:19

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Or a perverted Russian hacker

jimz > user314 12/16/2019 at 15:26

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watch for mechanized woodpeckers.

Distraxi's idea of perfection is a Jagroen > benn454 12/16/2019 at 15:27

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I’d forgotten about that scene!

I’ll have to get it added to our OSH emergency checklist. R ight after “in case of zombies ” (hint: chainsaw is stored in the LH locker in the workshop) .

It’s good to be prepared.

kanadanmajava1 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:28

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We have a huge tank of this on our company yard. It’s refilled around monthly. We use it for a bunch of measurement devices using s pectroscopy. They need to be cooled near liquid nitrogen temperature so it’s a very good way to keep the devices running at stable temperature . 1 liter of liquid nitrogen lasts ~12 hours.

It’s also useful for getting things press fitted together.

benn454 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:30

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 Just keep it away from any steel mills.

PyroHoltz f@h Oppo 261120 > For Sweden 12/16/2019 at 15:36

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You think liquid nitrogen is scary, try LOx....while you don’t get the asphyxiation problems that LN2 brings to the table , in   vast quantities, you do get a healthy dose of ‘ everything burns’ due to the highly oxidizing effects of pure oxygen in a liquid form. While non-toxic it’s nasty stuff.

https://en.wikipedia.org/wiki/Liquid_oxygen

For Sweden > Sammyno55 12/16/2019 at 15:38

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Oxygen will kill you.  Just look what it does to Mazdas.

Distraxi's idea of perfection is a Jagroen > kanadanmajava1 12/16/2019 at 15:38

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We use it for a HALT (highly accelerated life testing) facility. It chews through about a hundred liters per hour when it’s runni ng , but it only runs a few hours a week: we probably lose as much through evaporation as we actually use .

We’ve only got a 200 gallon tank - I’ve no idea why they sent a big truck to top us up, they have smaller ones.

kanadanmajava1 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 15:47

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That sounds like a quite interesting way to use it.

Distraxi's idea of perfection is a Jagroen > For Sweden 12/16/2019 at 15:50

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Oxygen is provably carcinogenic.

Take two groups of lab rats

Give one group access to oxygen

Give the other group no acc ess to oxygen

Count how many from each group die of cancer

QED.

Your PhD’s in the mail.

user314 > jimz 12/16/2019 at 16:16

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Well yeah, that goes without saying...

Ash78, voting early and often > PyroHoltz f@h Oppo 261120 12/16/2019 at 16:21

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Smoked salmon is just nasty. Nobody can convince me otherwise.

Distraxi's idea of perfection is a Jagroen > kanadanmajava1 12/16/2019 at 16:38

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HALT testing’s fun. Take a piece of electronics. Vibrate hell out of it at up to 100G while blowing alternating scalding (200C) and freezing (-100C ) air jets over it. See what breaks (something will). Don’t worry about whether that’s a “realistic” failure - your assessment on that will be wrong. Just redesign it to make the bit which broke stronger, then repeat the test. Keep going (ideally) till you reach physical limits like solder melting. Now you know your product’s as robust as it can possibly be. There’s some more sophisticated variations on the theme, but that’s the basic idea

We use it a lot, because we design long-life high-reliability products that are difficult to validate using more conventional accelerated testing.

ITA97, now with more Jag @ opposite-lock.com > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 17:04

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Around (we've got dairies in the area) here, the ones I'd least want to mess with are the old beater trucks with red (always red, for some reason) trailers that haul off deceased dairy cows.  Presumably they're going to a rendering plant somewhere, but they're terrible to follow.  Tangling with one seems like a terrible way go, covered in rotting cow carcass.

For Sweden > Ash78, voting early and often 12/16/2019 at 19:15

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But put it on a bagel

Urambo Tauro > For Sweden 12/16/2019 at 19:16

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Oxygen is a corrosive gas...

You can tell a Finn but you can't tell him much > PyroHoltz f@h Oppo 261120 12/16/2019 at 19:47

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They had all sorts of fun when developing the SSME’s for this very reason. Every time an engine failed on the test stand the LOX would ensure that the engines burned until there was nothing but a puddle of mystery alloy. They had a lot of difficulty determining i f the failures were happening on the fuel side or oxidizer side of things because there was never very much evidence left.

sdwarf36 > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 20:19

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Ok-since this IS a car site-I was checking out the truck. Wow-looks like they chec ked o ff alot of boxes orde ring that!

Jim Spanfeller > user314 12/16/2019 at 20:46

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No kidding. I went to Montana a couple years ago to celebrate Christmas with family, and the doors of our van froze shut, the GPS froze, everything freaking froze!!! We’re going again this year, and I expect it to be no different. Montana is frickin’ cold, man .

DipodomysDeserti > Distraxi's idea of perfection is a Jagroen 12/16/2019 at 20:48

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This joke only works if you don’t know that oxygen is already  a pretty well established carcinogen.

PyroHoltz f@h Oppo 261120 > You can tell a Finn but you can't tell him much 12/16/2019 at 21:12

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Propulsion testing is fun, you get to see all kinds of awesome stuff and cryo genics just amplify the excitement.

Distraxi's idea of perfection is a Jagroen > sdwarf36 12/17/2019 at 17:00

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C ontract haulage of really scary shit p robably pays pretty good - might as well spend some of that on your office, I guess. It’s a nice rig, for sure.

Distraxi's idea of perfection is a Jagroen > DipodomysDeserti 12/17/2019 at 17:11

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YMMV, I guess - from my perspective the joke’s about the method: whether the outcome’s accidentally right is irrelevant. I could equally well have said it caused obesity and used the same method to “prove” it.

Is “pretty well established” actually the case though? (that’s a q uestion no t me disagreeing, by the way ). I’m not a cancer researcher, a doctor, or even a biologist, but I’m aware that oxygen’s a strong oxidising agent (duh) and oxidation reactions drive most biological process including genetic decay and cancer growth, so it’s obviously i mplicated in cancer. But that’s like s aying it’s implicated in fi re - true, but limitedly useful. I also recall there was a study which made the news a few years back linking altitude with reduced lung cancer rates and suggesting that was due to reduced exposure of lungs to oxygen, but I also recall th ere was some dispu te about whether the authors had over-reached in the “correlation vs causation” direction . Is there more to it than that?

DipodomysDeserti > Distraxi's idea of perfection is a Jagroen 12/17/2019 at 22:57

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Yes, “ pretty well established” is the case with free radical oxygens and radical oxygen species. We’ve known for a while specifically how they disrupt cellular tissue and genetic material.

I have no knowledge of that altitude study. Just based on my atmospheric knowledge an d physiology knowledge, I would think the prevalence of particulate matter at low altitudes would play a larger role in lung cancer formation than oxygen content.

You have to breath in the same amount of oxygen whether you live at a high or low altitude. People adapted to high altitudes just produce more erythropoietin, and thus more red blood cells which allow their blood to bind more oxygen molecules per breath.

atfsgeoff > Distraxi's idea of perfection is a Jagroen 12/19/2019 at 01:52

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I see liquid nitrogen trucks all the time, they don’t phase me anymore.

Now when I see a liquid helium truck, I get excited. Just once I’d like to follow one of those till it stops or parks, and climb onto it and take a big whiff from the recirculating vent and yell like a chipmunk lol