#3 - There's a reason why we practice things, and this is it right here. Imagine doing that on the day of the race (I'm sure there's video of that happening too!)
#4 - I hope that video was emailed to the "we hire safe an courteous drivers!" guys and the guy was fired. And hopefully to the police too, 'cause that deserves a "careless driving" citation if anything does.
#8 - This is why front wheel vehicles are dangerous. Overcorrect and it's over (unless you're a "professional race driver" level of skill and experience.) Been there, done that, except I fishtailed twice (instead of once) before completely losing control, and was hit by oncoming traffic. Unlike this guy who got very, very lucky. Both to miss everyone AND to end up facing the right way (I didn't end up upside down in the ditch, but it was close, and one of the other vehicles involved did.)
He flinched when he noticed the car in the lane he was moving into, and jerked the steering wheel. It was all over from there.
#1 yeah. We can cut bronze and hardened steel with water and garnet, but the ancient Egyptians definitely couldn't cut granite and sandstone with copper and silica as an abrasive. Every time some chucklehead on the 'net spouts "you can't cut hard stone with copper tools!!" I'm like...yeah...and you can't cut AR500 with water and powdered abrasive, either.
I was going to mention that water jets use garnet but you beat me to it. In my work in Aerospace we've used water jets on chrome vanadium steel and D6AC. The metal in that padlock is like butter to a water jet.
Many interesting YT videos on how ancient civilizations may have used chemical methods to soften stone and make it moldable or mixed ingredients that hardened into stone- search "geopolymers" and "natron theory"-
Anon at 12:59, the "worst reading comprehension of the year" award is waiting at the podium for you. Try rereading a few dozen times, maybe you'll get to the bit about "ancient Egyptians definitely couldn't cut granite and sandstone with copper and silica as an abrasive"
Which is softer? Water, or copper? I'll simplify it: you can use silica sand as an abrasive in hydrojet cutting. It's a terrible idea, because silicosis, but you can do it. Silica sand is in the midrange of hardnesses that garnet can get.
It's also entirely possible to cut granite with copper tools, when you put silica sand between the tool and the granite. You go through a lot of tools, but it works just fine, and when it's all you've got, you make it work. Smooth bottomed copper saws, with granite as an abrasive, acts like using an abrasive saw to cut tile. Slower, yes. But absolutely possible.
Now taking bets on whether anon at 12:59 is capable of reading this comment and understanding it. -Original Poster (OP) -aka AL
In the '80s Canadair developed lightweight aircraft floor panels that have an aluminum top skin with a kevlar honeycomb centre and kevlar bottom skin all epoxied together. They used 30,000psi to trim the edges and cut the screw holes. The fellow in town who makes custom granite countertops has a 50,000psi machine. The later Egyptians had bronze which can be hardened, and they also had slave labour and construction deadlines that were measured in decades. Al_in_Ottawa
Longer wheelbases are a LOT more forgiving in drifting and fishtailing. I could do that all day long in a 42 seat Bluebird school bus (and I’m sure the kids woulda loved it!). Basically, the longer wheelbase essentially makes it almost impossible to spin it out. So all you do it modulate the throttle to maintain the drift. A shorter wheelbase like a car, it’ll just spin out. But with something long like that, it’s next to impossible to spin it because of how fast the back end would need to travel to spin it out.
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#8 Dude! Lane change isn’t that hard. Just signal and slide over, no need for all the theatrics.
ReplyDelete#3 - There's a reason why we practice things, and this is it right here. Imagine doing that on the day of the race (I'm sure there's video of that happening too!)
ReplyDelete#4 - I hope that video was emailed to the "we hire safe an courteous drivers!" guys and the guy was fired. And hopefully to the police too, 'cause that deserves a "careless driving" citation if anything does.
#8 - This is why front wheel vehicles are dangerous. Overcorrect and it's over (unless you're a "professional race driver" level of skill and experience.) Been there, done that, except I fishtailed twice (instead of once) before completely losing control, and was hit by oncoming traffic. Unlike this guy who got very, very lucky. Both to miss everyone AND to end up facing the right way (I didn't end up upside down in the ditch, but it was close, and one of the other vehicles involved did.)
He flinched when he noticed the car in the lane he was moving into, and jerked the steering wheel. It was all over from there.
John G
#1 yeah. We can cut bronze and hardened steel with water and garnet, but the ancient Egyptians definitely couldn't cut granite and sandstone with copper and silica as an abrasive. Every time some chucklehead on the 'net spouts "you can't cut hard stone with copper tools!!" I'm like...yeah...and you can't cut AR500 with water and powdered abrasive, either.
ReplyDeleteAre you suggesting the ancient Egyptians had high pressure water cutting tools? That’s a bold statement Cotton, let’s see if it pays off for him.
DeleteI was going to mention that water jets use garnet but you beat me to it. In my work in Aerospace we've used water jets on chrome vanadium steel and D6AC. The metal in that padlock is like butter to a water jet.
DeleteMany interesting YT videos on how ancient civilizations may have used chemical methods to soften stone and make it moldable or mixed ingredients that hardened into stone- search "geopolymers" and "natron theory"-
Delete#1 And sure as shootn' there was a guy named Subby in the shop who had to put his finger in the waterjet stream...
DeleteAmazing. What kind of PSI are we talking about here? What's the nozzle made of?
DeleteAnon at 12:59, the "worst reading comprehension of the year" award is waiting at the podium for you.
DeleteTry rereading a few dozen times, maybe you'll get to the bit about "ancient Egyptians definitely couldn't cut granite and sandstone with copper and silica as an abrasive"
Which is softer? Water, or copper?
I'll simplify it: you can use silica sand as an abrasive in hydrojet cutting. It's a terrible idea, because silicosis, but you can do it. Silica sand is in the midrange of hardnesses that garnet can get.
It's also entirely possible to cut granite with copper tools, when you put silica sand between the tool and the granite. You go through a lot of tools, but it works just fine, and when it's all you've got, you make it work.
Smooth bottomed copper saws, with granite as an abrasive, acts like using an abrasive saw to cut tile. Slower, yes. But absolutely possible.
Now taking bets on whether anon at 12:59 is capable of reading this comment and understanding it.
-Original Poster (OP)
-aka AL
No need to get insulting about it, OP aka AL.
DeleteIn the '80s Canadair developed lightweight aircraft floor panels that have an aluminum top skin with a kevlar honeycomb centre and kevlar bottom skin all epoxied together. They used 30,000psi to trim the edges and cut the screw holes. The fellow in town who makes custom granite countertops has a 50,000psi machine.
DeleteThe later Egyptians had bronze which can be hardened, and they also had slave labour and construction deadlines that were measured in decades.
Al_in_Ottawa
"The later Egyptians had bronze which can be hardened, and they also had slave labour and construction deadlines that were measured in decades"
DeleteSounds like the Boeing AF 1 project is on an Egyptian schedule.
Original Poster sounds like a real horse's ass.
Delete#4-Russia?
ReplyDeleteIt's a helluva lot easier to hang it out like that with a long wheelbase that a Bronco or Jeep or whatever the kids are crashing lately...
DeleteWow. Every one of these would have turned out a lot different under the title Mondays.
ReplyDelete#4. Either a world class driver or a world class idiot...
ReplyDeleteLonger wheelbases are a LOT more forgiving in drifting and fishtailing. I could do that all day long in a 42 seat Bluebird school bus (and I’m sure the kids woulda loved it!). Basically, the longer wheelbase essentially makes it almost impossible to spin it out. So all you do it modulate the throttle to maintain the drift. A shorter wheelbase like a car, it’ll just spin out. But with something long like that, it’s next to impossible to spin it because of how fast the back end would need to travel to spin it out.
Delete#7 This is the definition of commitment.
ReplyDelete