|
These led me to this video https://www.youtube.com/watch?v=B229-KLudTo I assume those planes are usually built so that the wheels don't fall off.
|
#
?
Apr 10, 2021 14:49
|
|
|
|
| # ? Jun 5, 2024 00:42 |
|
|
"Stop! You've violated
|
|
#
?
Apr 10, 2021 14:59
|
|
|
EvenWorseOpinions posted:My favorite part is that gravity appears to be the only fastener they use that's all it needs you can also tell at glance if a train car is loaded or empty by how compressed the springs are
|
|
#
?
Apr 10, 2021 15:08
|
|
|
It's always impressive how well designed technology get to be after several generations of engineering.
|
|
#
?
Apr 10, 2021 15:21
|
|
|
Splashing injuries: we had a sailor on deployment who was doing some maintenance on a power cart on the flight deck. This results in having an open bucket full of used engine cleaning fluid. During the actual maintenance, they were wearing all the required PPE, including goggles. However, when it came time to dispose of the fluid, they took that stuff off and were carrying it down a stair well when a combination of sloshing and a gust of wind splashed some of it up in their eyes. A quick trip to medical to get their eyes flushed out and they were fine, but the lesson was learned that you need to keep your PPE on the whole time you're dealing with HAZMAT, not just while actively working on the equipment.
|
|
#
?
Apr 10, 2021 15:23
|
|
|
MikeCrotch posted:SCREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE The San Francisco BART trains have untapered cylindrical wheels because somebody in the 70s thought it would be cheaper to do it that way. I have to assume it was some young engineer in the classic San Francisco startup style who looked at the conical wheels on every train on the planet and said "well that's stupid! Straight wheels make much more sense!" And now we have EEEEEEEEEEEEEEEEEEEEEEEE
|
|
#
?
Apr 10, 2021 16:22
|
|
|
I'll mention my weird experiences with the railroad here. I do research work that involves energy and transportation sectors. Each sector and industry has its own feel and character. It's extremely easy to obtain all sorts of information, software, firmware, used or new devices in the electric grid sector and general industrial automation. Vendor reps are easy to talk to, want to sell you stuff, and share information. It gets quite a bit harder in the oil and gas sector. You can still buy stuff and speak to vendors but obtaining information from operators gets a lot harder. These guys try to protect their infrastructure and are generally suspicious. And then there is the railroad sector. It's the single most walled off garden I've ever seen. Railroad operators won't even answer calls or emails. Vendors - if you can find out who they are - are extremely uncooperative. They might talk to you briefly just to tell you to gently caress off. Hardly any will even consider selling anything to anyone but railroad operators. There are very few vendors, they are tightly inter-linked and they all talk to each other. In conclusion, railroad opsec is pretty good
|
|
#
?
Apr 10, 2021 16:26
|
|
|
Gasoline posted:These led me to this video that poor girl sounded so terrified at the start there.
|
|
#
?
Apr 10, 2021 16:33
|
|
|
I met him at a the port just the other day Where we ride on a ship to go fishing off Nova Scotia N-O-V-A Scotia He didn't have gear and he wasn't prepared We left him at port to avoid any problems with OSHA O-S-H-A, OSHA, O-O-O-O-OSSSHHAA
|
|
#
?
Apr 10, 2021 16:59
|
|
|
By popular demand posted:It's always impressive how well designed technology get to be after several generations of engineering disasters.
|
|
#
?
Apr 10, 2021 16:59
|
|
|
Gasoline posted:These led me to this video The planes are built to very strict aeronautical standards, yes.
|
|
#
?
Apr 10, 2021 17:16
|
|
|
That's me getting my Sub stuck in GTA Online.
|
|
#
?
Apr 10, 2021 17:18
|
|
|
Mr. Nice! posted:That’s 100% correct. Trains would not work properly if the wheels and axles were attached to the cars. Pretty sure the trucks would work fine fastened to the cars, so long as the trucks can swivel, but the weight of the cars makes fastening not worth the effort (plus the ease of maintenance shown above).
|
|
#
?
Apr 10, 2021 17:39
|
|
|
But now you can't build ramps and do sick jumps!
|
|
#
?
Apr 10, 2021 17:46
|
|
|
Yeah, my original point was more that I didn't realize gravity is what holds train axles and wheels and stuff together, but it makes sense considering their operating regime. It's an elegant 'solution' to a problem that I assumed existed
|
|
#
?
Apr 10, 2021 17:54
|
|
|
By popular demand posted:Work shoes, steel toed, sealed to liquids and nonconductive to electricity. I had the sneaker kind of steeled toes. While welding, a drop of molten slag landed on them, burned a hole through my shoe and sock, and landed on my foot. With no place to go, it kept burning into my foot. It took five years before that scar started fading.
|
|
#
?
Apr 10, 2021 17:56
|
|
|
MikeCrotch posted:SCREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE I love hearing trains at night in the distance. When I went to college, though, the campus was bisected by a train line and they'd blow the horn the entire time they crossed campus even in the middle of the night, which wasn't as nice, especially my second year when my room directly faced the train tracks.
|
|
#
?
Apr 10, 2021 17:58
|
|
|
EvenWorseOpinions posted:Yeah, my original point was more that I didn't realize gravity is what holds train axles and wheels and stuff together, but it makes sense considering their operating regime. It's an elegant 'solution' to a problem that I assumed existed The same applies to old time battleship turrets. Ships were not intended to roll around their main axis, so the turrets were just dropped in place. Of course if such a ship sunk it could roll, and then the turrets would fall off while the hull might drift a bit beneath the waves.
|
|
#
?
Apr 10, 2021 18:04
|
|
|
Am guessing the ancient aliens dude is the one filming at the top of the shaft.
|
|
#
?
Apr 10, 2021 18:36
|
|
|
HelloIAmYourHeart posted:I love hearing trains at night in the distance. When I went to college, though, the campus was bisected by a train line and they'd blow the horn the entire time they crossed campus even in the middle of the night, which wasn't as nice, especially my second year when my room directly faced the train tracks. a buddy went to grad school at the University of Wisconsin Madison and I distinctly remember waking up thinking a train was going to eat me I think he said the city kept fining the conductor who did it, but that just made him do it more
|
|
#
?
Apr 10, 2021 18:37
|
|
|
By popular demand posted:Work shoes, steel toed, sealed to liquids and nonconductive to electricity. Oh I was wearing work shoes when I soaked my foot in boiling water. Well, kitchen shoes. I still have a pair: comfy and those rubber soles were like wearing a pair of suction cup on the feet in a wet and messy kitchen. Sadly they weren't water resistant. In fact they'd always fall apart after about 5-6 months due to me often working in the dish pit and getting them soaked. On the plus side that meant the soles never wore out. Shame the place I work in now has a waxed floor those same slip-resistant soles now feel like I'm walking on two pieces of soap. Learned about them and how they're not the same as sneakers the hard way. Our delivery team was trecking in and out during heavy rains (we ran 11-12 stores selling our pre-made meals on 2 kitchens so we had the D-Team transferring all that stuff) making part of the kitchen hella wet. I go around the corner to put an empty container in the dish pit a bit too fast and my tennis shoes simply didn't have the grip. Broke a rib hitting the corner of a prep table on the way down.
|
|
#
?
Apr 10, 2021 18:39
|
|
|
TotalLossBrain posted:And then there is the railroad sector. It's the single most walled off garden I've ever seen. Railroad operators won't even answer calls or emails. What super secret tech info are RRs and vendors trying to protect? Or is it their sales cont(r)acts?
|
|
#
?
Apr 10, 2021 18:48
|
|
|
Memento posted:https://i.imgur.com/s4YWegv.mp4 I like how the one guy puts the jack spacers (I can't recall their proper name) on the cylinder and then doesn't relieve the hydraulic pressure to properly use them.
|
|
#
?
Apr 10, 2021 19:08
|
|
|
Empty Sandwich posted:a buddy went to grad school at the University of Wisconsin Madison and I distinctly remember waking up thinking a train was going to eat me I'm convinced something like this is going on with the line that runs by my apartment, because it goes right through the middle of the city and they always seem to blow the horns louder and longer at night. There are no level crossings to worry about or anything like that, either. It's pretty funny.
|
|
#
?
Apr 10, 2021 19:13
|
|
|
moparacker posted:I like how the one guy puts the jack spacers (I can't recall their proper name) on the cylinder and then doesn't relieve the hydraulic pressure to properly use them. At least they should still catch the weight if the pressure fails, I hope?
|
|
#
?
Apr 10, 2021 19:16
|
|
|
Memento posted:https://i.imgur.com/s4YWegv.mp4 There's a train shop in PA that has a gantry crane that can pick up a locomotive and set it down on the other end of the shop. Surprisingly hard to find footage of it in action but It's impressive. https://www.youtube.com/watch?v=LN-F3HSEZm4
|
|
#
?
Apr 10, 2021 19:22
|
|
|
moparacker posted:I like how the one guy puts the jack spacers (I can't recall their proper name) on the cylinder and then doesn't relieve the hydraulic pressure to properly use them. Yeah, I would have thought he'd lower it down.
|
|
#
?
Apr 10, 2021 19:47
|
|
|
Computer viking posted:At least they should still catch the weight if the pressure fails, I hope? Yes, it's perhaps a time saving method thing (so you don't have to lift it again, then lower again), not super safe but better than nothing. So fits perfectly here.
|
|
#
?
Apr 10, 2021 20:01
|
|
|
some crossposts from the schadenfreude thread: https://i.imgur.com/3zrMo0m.mp4 https://i.imgur.com/rUQevJv.mp4
|
|
#
?
Apr 10, 2021 21:14
|
|
|
Mr. Nice! posted:Yeah, I would have thought he'd lower it down. Yeah, if it suddenly fails, I wouldn't want to trust it all works with the physics of the thing slamming down on the spacers.
|
|
#
?
Apr 10, 2021 22:56
|
|
|
They're just finding the cargo capacity of the ship! Used to do it with elephants...
|
|
#
?
Apr 10, 2021 23:21
|
|
|
I've always heard those called 'blocks' and with that small of a gap between the jack's head and the blocks I would think it would still be 'safe', but if you want your jack to wear down faster I think that leaving a bunch of static pressure on its hydraulics is a good way to accomplish thatNenonen posted:The same applies to old time battleship turrets. Ships were not intended to roll around their main axis, so the turrets were just dropped in place. Of course if such a ship sunk it could roll, and then the turrets would fall off while the hull might drift a bit beneath the waves. In case anyone wanted to hear a nerd give a 55 minute lecture about this topic, here it ishttps://www.youtube.com/watch?v=LJfGJPLDwAI It's been since early this year that I watched it but my recollection is that there are some mechanical retention method for some turrets on some ships but whether or not those could hold a turret in place, they were probably designed to keep the turrets from being jarred off of their rollers if the ship took a hit or when firing EvenWorseOpinions fucked around with this message at 01:07 on Apr 11, 2021 |
|
#
?
Apr 10, 2021 23:34
|
|
|
They lower the jack in the full video. https://www.youtube.com/watch?v=8Qv7y0W_mNM
|
|
#
?
Apr 11, 2021 00:27
|
|
|
Wasabi the J posted:They're just finding the cargo capacity of the ship! They really gotta stop letting Calvin's dad be in charge of these kinds of things...
|
|
#
?
Apr 11, 2021 00:38
|
|
|
Memento posted:https://i.imgur.com/s4YWegv.mp4 Came across some of those wheel and axle sets were just chilling under a train bridge, not chained down or anything. The busy downtown street it was on sloped downward, I realized anybody could wreck poo poo/kill people by setting them rolling down the street if they were so inclined.
|
|
#
?
Apr 11, 2021 00:53
|
|
|
I found a whole rear end coupler on the side of the tracks once and still wonder how nobody missed it
|
|
#
?
Apr 11, 2021 01:10
|
|
|
Sagebrush posted:The San Francisco BART trains have untapered cylindrical wheels because somebody in the 70s thought it would be cheaper to do it that way. I have to assume it was some young engineer in the classic San Francisco startup style who looked at the conical wheels on every train on the planet and said "well that's stupid! Straight wheels make much more sense!" I really miss when the Paris Metro ran on rubber tires.
|
|
#
?
Apr 11, 2021 01:16
|
|
|
found some proto-OSHA at the antique mall earlier today
|
|
#
?
Apr 11, 2021 01:27
|
|
|
Wear gloves when handling sharp things, and don't try to catch them if you drop them. for blood.  My enormous meat paws narrowly save themselves from tendon or bone damage yet again.
|
|
#
?
Apr 11, 2021 02:13
|
|
|
|
| # ? Jun 5, 2024 00:42 |
|
|
PainterofCrap posted:I really miss when the Paris Metro ran on rubber tires. They still do.
|
|
#
?
Apr 11, 2021 03:08
|
|
