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[-] rob_t_firefly@lemmy.world 71 points 1 month ago
[-] cm0002@lemmy.world 37 points 1 month ago

Found the uncensored version

[-] Remotedeck@discuss.tchncs.de 50 points 1 month ago

Better quality uncensored version

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[-] Rentlar@lemmy.ca 57 points 1 month ago

100 psi = 100 pirsent.

[-] Thorry84@feddit.nl 43 points 1 month ago

100psi is 6894 hPa for the freedom challenged among us.

[-] LordWiggle@lemmy.world 43 points 1 month ago

How much banana per square dishwasher in is that?

[-] Sparky 14 points 1 month ago
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[-] stebo02@lemmy.dbzer0.com 22 points 1 month ago

neither of those mean anything to me

[-] EtherWhack@lemmy.world 5 points 1 month ago

How about 689.4kPa?

[-] 9point6@lemmy.world 18 points 1 month ago

I find bar more intuitive even if it's just hPa/1000

Nearly 7 bar is impressive for any tyres

[-] MentalEdge@sopuli.xyz 10 points 1 month ago* (last edited 1 month ago)

Any car tire.

For road bicycles 7 bar is just "normal", 8 and above isn't unheard of.

A guy once asked if I was crazy when I was pressurizing my hybrid bike to 6 bar, and I just pointed to the sidewall where the rating said 4.5-6.5 bar. The range is wide because the pressure you should use varies depending on what you weigh, and how you want to balance rolling resistance vs comfort.

And even then the safety margin on bike tires is more than double the max rating, so it's perfectly safe to go a full bar over if you want.

[-] MisterFrog@lemmy.world 5 points 1 month ago

As much as hPa is legitimate, in English speaking contexts I wish we kept to 10^3 prefixes. (Pa, kPa, MPa, GPa etc).

Like how we keep to nm, μm, mm, m, km. Mostly.

Or if one really must, atmospheres. Other units are just more of a pain to convert between, like yeah, it's metric, so it's not THAT hard, but just nicer in my opinion if it's consistent intervals.

Alas, at least I very rarely need to deal with PSI. Only with valve manufacturers using imperial valve coefficients (Cv values), grumble, grumble. They don't even include the units usually, which to me is heresy. The units are US gallons/min of water at 60 °F per pressure drop of 1 PSI. Like, US engineers have this really stupid habit of not including units in constants and coefficients in some contexts, drives me up the wall.

Thanks for being the convenient recipient of this metric engineer's unit rant.

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[-] ComradeMiao@lemmy.dbzer0.com 28 points 1 month ago

Once my roommate punctured one of my tires and I went to a gas station and filled it up. Must have been one of my first times doing it ever. As I got back on the highway my car finally showed the pressure, it read 73….

[-] ininewcrow@lemmy.ca 50 points 1 month ago

Don't feel bad ... I drove down the road once in my old truck and started feeling a terrible shaking ... I drove for a while hoping it would go away but it got worse. I finally pulled over and had a look at front passenger side tire .... a bulge was sticking out of it like a giant bruise and once the tire stopped moving, the bulge grew ten sizes and as soon as I realized what it was, I turned away and the thing exploded!

Always check your tires.

[-] ComradeMiao@lemmy.dbzer0.com 16 points 1 month ago
[-] dingus@lemmy.world 7 points 1 month ago

Omg glad you were ok! New fear unlocked!!

[-] passiveaggressivesonar@lemmy.world 15 points 1 month ago

I know this is obvious but it boggles my mind how each square inch of that tire has almost 100lbs of force pushing on it

Just realizing now why hydraulics are so strong, a 6 inch squared piston at 100 psi is 600 pounds of force

[-] repungnant_canary@lemmy.world 8 points 1 month ago

If you consider that a car weighs hundreds of kilograms but its contact surface with ground is something like 100 squared centimetres, that pressure makes sense

[-] absGeekNZ@lemmy.nz 8 points 1 month ago

I work with industrial hydraulics, the forces involved in big gear are truly insane.

Working pressures is around 270bar....on ~1.4m^2 of cylinders. Millions of kg of force.

[-] EmoDuck@sh.itjust.works 12 points 1 month ago

Plot twist: That reading is in Bar

[-] Pacattack57@lemmy.world 11 points 1 month ago
[-] ICastFist@programming.dev 11 points 1 month ago

If the car doesn't fly, whoever stands by one of those tires most certainly will

[-] TriPolarBearz@lemmy.world 5 points 1 month ago

Fly straight to heaven

[-] oleorun@real.lemmy.fan 10 points 1 month ago

Like driving on four basketballs

[-] Grass@sh.itjust.works 9 points 1 month ago

meanwhile I'm sketched out by the tires on my uncles old road bike that say max 90 psi wheras mine say like 20 or so.

[-] gratux 22 points 1 month ago

narrow tires need more pressure to maintain the same outward force, because the area is smaller.

[-] takeda@lemmy.world 6 points 1 month ago

Ok so that's what the backup tire says 60psi.

When I first saw it, I thought that it has to be wrong and I'm looking at the wrong number.

[-] DesolateMood@lemm.ee 4 points 1 month ago

When I saw it the first time, before I understood how it worked, I thought "surely this is just for long-term storage purposes and I would need to bleed some pressure if I wanted to drive on it"

[-] nutbutter@discuss.tchncs.de 8 points 1 month ago

CHITTYCHITTYBANGBANG

[-] LordWiggle@lemmy.world 7 points 1 month ago

He should test his tires with water first.

[-] lorty@lemmy.ml 7 points 1 month ago

There are two types of friends, this is the second type.

[-] Threeme2189@sh.itjust.works 6 points 1 month ago

Pffft amateur... I can easily pump my car tires up to 100 Bar.

[-] amon@lemmy.world 5 points 1 month ago

Any car can be a flying car if you give it enough acceleration

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this post was submitted on 18 Dec 2024
689 points (100.0% liked)

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