The number they'd need for gasoline is 1203, one of the few i have memorized. If you ever see a number on a truck, you can look it up on a hazmat number lookup site and it'll tell you what it's hauling. Usually it's gas, diesel, or propane, but sometimes it's something more fun
Edit: i saw a truck with the number 1824 on it, looked it up, and it's a Sodium Hydroxide solution
When transporting dangerous goods, they must be properly placarded with regulation placards.
I still remember how much they use the word placard/placardable in the WHMIS training. Would be a fun drinking game if you survived the alcohol poisoning.
Most cars are rated at a maximum of 100kg on the roof and that’s with a solidly secured load not a fluid slushing around. The roof itself shouldn’t cave in as it is designed to protect you during a rollover.
I wonder if there’s even a gain in total miles they can travel given how much air resistance that sail adds. Wonder what RPM the engine is pushing going highway speeds.
It just has to burn more fuel for each combustion cycle to keep the engine spinning at the same speed. It's like how it's easier to pedal a bike down an incline versus up the same incline, but your legs will still pedal at the same rate for the same speed (assuming you don't change gears).
No, because an engine can use different amounts of fuel even at the same RPM. At the most extreme, a car can go downhill at high RPM with no fuel injection at all, only driven by gravity.
During normal driving, the engine's crankshaft has a hard link to the wheels. It's going through a couple of gears etc. inside the transmission etc., but the speed conversion from that is fixed within a single gear. This means that the speed the vehicle is going is directly tied to the RPM the engine is turning at. For every gear, every possible vehicle speed correlates directly to a single specific RPM of the engine. Fuel use at that RPM can vary a lot though, entirely depending on the amount of energy needed to keep the engine at that speed with air resistance and other factors trying to slow the car down through the drivetrain.
I am following your reasoning here. The thing that tripped me up was the last sentence of your previous comment. I understood it like it's not necessary to switch gears since the load has no real effect on the force needed to move the car. You probably meant that the engine could handle the extra load while staying in the same gear and still use more fuel.
Ah, yeah, that's what I meant. I just assumed that at highway speeds, the additional drag in this scenario probably wouldn't be enough to warrant shifting down. Although to be fair depending on the engine it totally might, that was just a quick generalization on my part
I mean that looks like a cubic meter tank so half full it should theoretically hold about ten times as much as the tank in the car. I'm curious about the roof and how much weight it can hold without damage though
Putting aside the stupidity. What are the actual benefits of this? It's not like gas is hard to come by.. And the added weight and reduced aerodynamics probably means fewer mpg, right?
Given the color it could be used cooking oil for a biodiesel conversion. But outside of cost saving from fuel ubiquity, none of it is an improvement for anything.
Color me surprised. I would have guessed that a roll would allow for some kinds of deformation but this mode of load with the wiggling didn't seem realistic to me. Still doesn't honestly.
And in times of ai forgive me for being skeptical.
46 Comments
teft@piefed.social · 61 pts · 81d
I don’t know much about safety but i’m like 90% sure they need one of those flammable signs with the numbers.
FilthyShrooms@lemmy.world · 25 pts · 80d
The number they'd need for gasoline is 1203, one of the few i have memorized. If you ever see a number on a truck, you can look it up on a hazmat number lookup site and it'll tell you what it's hauling. Usually it's gas, diesel, or propane, but sometimes it's something more fun
Edit: i saw a truck with the number 1824 on it, looked it up, and it's a Sodium Hydroxide solution
OldChicoAle@lemmy.world · 16 pts · 80d
What's more fun than propane? - Hank Hill (probably)
Cypher@aussie.zone · 3 pts · 80d
Hydrofluoric acid - some guy
VinegarChunks@lemmus.org · 4 pts · 79d
Based.
MonkderVierte@lemmy.zip · 4 pts · 80d
Couldn't they just add the name directly?
Mycatiskai@lemmy.ca · 10 pts · 80d
When transporting dangerous goods, they must be properly placarded with regulation placards.
I still remember how much they use the word placard/placardable in the WHMIS training. Would be a fun drinking game if you survived the alcohol poisoning.
blarghly@lemmy.world · 5 pts · 80d
Its probably easier to write/print a number on a triangle when the name of the hazardous material is 129 letters long
human@slrpnk.net · 56 pts · 81d
I'm glad they are being responsible by wedging the hose in there with a towel.
BCsven@lemmy.ca · 37 pts · 81d
For easy lighting
inari@piefed.zip · 32 pts · 81d
Looks shaky af
BCsven@lemmy.ca · 27 pts · 81d
Probably corners very badly with the Center of Mass being moves up so high
favoredponcho@lemmy.zip · 20 pts · 81d
grue@lemmy.world · 22 pts · 80d
There's no way the roof rack is rated for that much weight (let alone sloshing around).
AAA@feddit.org · 10 pts · 80d
Not just the roof rack. The whole car is probably close to the max allowed weight.
The container is seemingly at around 60%, so 600L. Gas is ~25% lighter than water, so we're looking at something like 450kg.
I don't know the model, but a lot of similar or even bigger cars max out at +500kg (per specification). Most cars have less allowance.
And this is just on the roof. Not counting the container, passengers and other stuff.
Truly a marvel of engineering.
Junkers_Klunker@feddit.dk · 3 pts · 80d
Most cars are rated at a maximum of 100kg on the roof and that’s with a solidly secured load not a fluid slushing around. The roof itself shouldn’t cave in as it is designed to protect you during a rollover.
CookieOfFortune@lemmy.world · 23 pts · 80d
I wonder if there’s even a gain in total miles they can travel given how much air resistance that sail adds. Wonder what RPM the engine is pushing going highway speeds.
hikaru755@lemmy.world · 6 pts · 80d
Same speed = same RPM, regardless of load / air resistance. Unless they have to drive in a lower gear to make it work, but I doubt that
CookieOfFortune@lemmy.world · 10 pts · 80d
You’re right RPM is tied directly to wheel speed. There is increased fuel consumption because the load on the engine is higher.
prenatal_confusion@feddit.org · 7 pts · 80d
Wouldn't that mean that a car with a trailer uses the same amount if fuel? Which it doesn't, I am sure.
StupidBrotherInLaw@lemmy.world · 11 pts · 80d
It just has to burn more fuel for each combustion cycle to keep the engine spinning at the same speed. It's like how it's easier to pedal a bike down an incline versus up the same incline, but your legs will still pedal at the same rate for the same speed (assuming you don't change gears).
prenatal_confusion@feddit.org · 2 pts · 80d
See my reply in another comment
StupidBrotherInLaw@lemmy.world · 1 pts · 79d
Yep, you've got it right.
hikaru755@lemmy.world · 5 pts · 80d
No, because an engine can use different amounts of fuel even at the same RPM. At the most extreme, a car can go downhill at high RPM with no fuel injection at all, only driven by gravity.
During normal driving, the engine's crankshaft has a hard link to the wheels. It's going through a couple of gears etc. inside the transmission etc., but the speed conversion from that is fixed within a single gear. This means that the speed the vehicle is going is directly tied to the RPM the engine is turning at. For every gear, every possible vehicle speed correlates directly to a single specific RPM of the engine. Fuel use at that RPM can vary a lot though, entirely depending on the amount of energy needed to keep the engine at that speed with air resistance and other factors trying to slow the car down through the drivetrain.
prenatal_confusion@feddit.org · 3 pts · 80d
I am following your reasoning here. The thing that tripped me up was the last sentence of your previous comment. I understood it like it's not necessary to switch gears since the load has no real effect on the force needed to move the car. You probably meant that the engine could handle the extra load while staying in the same gear and still use more fuel.
I think we are on the same page now
hikaru755@lemmy.world · 2 pts · 80d
Ah, yeah, that's what I meant. I just assumed that at highway speeds, the additional drag in this scenario probably wouldn't be enough to warrant shifting down. Although to be fair depending on the engine it totally might, that was just a quick generalization on my part
EddoWagt@feddit.nl · 2 pts · 80d
Unless it's a CVT, which it probably isn't
nullroot@lemmy.world · 2 pts · 80d
More surface area = more drag. A big ol non aerodynamic cube will definitely be adding more drag. Other than that, yeah load doesn't really effect mpg
hikaru755@lemmy.world · 2 pts · 80d
Yeah for sure. I'm just saying that the engine RPM won't be affected as the original comment implied. Drag and mpg will definitely be higher.
wurstgulasch3000@feddit.org · 1 pts · 77d
I mean that looks like a cubic meter tank so half full it should theoretically hold about ten times as much as the tank in the car. I'm curious about the roof and how much weight it can hold without damage though
comradegreetingcard@lemmy.ml · 21 pts · 81d
Putting aside the stupidity. What are the actual benefits of this? It's not like gas is hard to come by.. And the added weight and reduced aerodynamics probably means fewer mpg, right?
ChicoSuave@lemmy.world · 17 pts · 81d
Given the color it could be used cooking oil for a biodiesel conversion. But outside of cost saving from fuel ubiquity, none of it is an improvement for anything.
grue@lemmy.world · 3 pts · 80d
Pretty sure that car doesn't come in a diesel version.
Thrawn@lemmy.dbzer0.com · 4 pts · 80d
Full engine swap? Makes it even more ridiculous if so but someone stupid enough to do this seems like the type.
blarghly@lemmy.world · 3 pts · 80d
I'm betting thats what this is. It doesnt make sense. It doesnt need to make sense. Its for the lulz
anomnom@sh.itjust.works · 1 pts · 80d
Could also be that they’re collecting the cooking oil for another use or vehicle and just put the hose down there as a gag.
tomi000@lemmy.world · 4 pts · 80d
No benefit, its just a gag
quick_snail@feddit.nl · 21 pts · 80d
Shouldnt there be baffles in the tank to prevent sloshing?
cornshark@lemmy.world · 2 pts · 80d
The baffles are on the road outside the tank
Bakkoda@lemmy.world · 1 pts · 79d
Should there be? Who knows. Are there? Who knows.
roserose56@lemmy.zip · 8 pts · 80d
You just can't leave it home and fill it up daily, right?
recklessengagement@lemmy.world · 6 pts · 80d
Cannonball run, perhaps?
SnarkoPolo@lemmy.world · 4 pts · 79d
Ahh, what's the worst that could happen?
Kolanaki@pawb.social · 3 pts · 81d
"Cost me a few C notes to fill this sucker up."
prenatal_confusion@feddit.org · 0 pts · 80d
Not real. That thing would crush the roof.
Mubelotix@jlai.lu · 1 pts · 80d
Except it is. Car are designed to roll over, the roof is strong
prenatal_confusion@feddit.org · 2 pts · 80d
Color me surprised. I would have guessed that a roll would allow for some kinds of deformation but this mode of load with the wiggling didn't seem realistic to me. Still doesn't honestly.
And in times of ai forgive me for being skeptical.