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Why the American Hellcat dominated the Japanese Zero

newtboy says...

Zeros being made of the new “extra super duralumin” aluminum alloy, which corroded quickly in corrosive environments (like near the ocean) and became extremely brittle likely helped too.

BSR (Member Profile)

Did you know this about aluminum cans-Chemteacherphil

eric3579 says...

A more in depth did you know about aluminum cans


Meeting invaders with some friendly advice.

vil says...

So the latest rumour is that by the village of Ljubimovka a group of local gypsies stole a Russian tank.

Now my personal reason to want to believe this story. Back when I was doing my then compulsory army service our country was still housing thousands of Russian troops which had come 20 years earlier in 1968 to keep the peace or something (temporarily). I was stationed at a maintenance and storage unit (managed the kitchen). Our unit oversaw the infrastructure of part of the local training grounds where Russian troops regularly trained. One of the main activities, besides facilitating the sale of military diesel fuel was to remove stranded vehicles the Russians simply left behind broken or overturned in ditches. Breaking them up and selling for recycling was pretty lucrative - our labor was free, trucks and cranes were military equipment (also free), tanks contain a surprising amount of copper and aluminum, steel armor is heavy. I dont think Russians count either their troops or their tanks.

Congress Under Armed Attack Live Stream

newtboy says...

Parlor has been closed, no longer hosted by Amazon and finding it hard to find another host, and pulled from multiple app stores, because the Trump crowd was using it to plan a repeat attack on the 17th.
I wish they would let them plan it, set up the capitol with multiple levels of real unclimbable barricades, not just 3' tall aluminum railings, and use deadly force on everyone who shows up. This country would be better off without them.

Doc Rivers

greatgooglymoogly says...

You need to do some more research, there are some terrible bills out there in addition to ones with straightforward good things like background checks. The ghost gun fanatics will end up banning aluminum stock and most 3D printers, they are so ignorant.
https://www.westernjournal.com/dem-reps-attempt-get-rid-ghost-guns-ban-common-tool/
Ghost gun "kits" like you say are blocks of aluminum or polymer partially machined that have to be further machined to be turned into a gun. Cad files for turning a rectangular block of aluminum into a gun are easily available. These are not guns, and treating them as such is simply stupid.

Firearm accessories like magazines are critical parts to a functioning weapon. People have already been successful in getting most people to think 30rnd mags for an AR-15 is "high capacity" when it's actually the standard capacity. They want to ban every removable magazine, with zero data that it will reduce gun crime. There have been bills to define any semi-automatic weapon an "assault weapon". Ludicrous.

newtboy said:

Silly, just a ban on selling one style of rifle, not a type. Are they still actually working on that, or are you talking about past attempts? I thought that has gone nowhere since Jan 2019 when it was introduced and shelved. New bill number please.

Supressors/silencers, not a firearm but an accessory, like bump stocks. That's not anti gun.

D I Y, good luck. Who's actually trying any such thing? They would have to ban each design, because they can't ban the method. I've not heard of any actual legislation, just moaning. Bill number please.
Ghost guns, pre manufactured kits but requiring assembly, should be treated like any gun imo. That means serial numbers and background checks, that's not anti gun legislation.

Private sales loophole, exactly what I mentioned, and in no way anti gun. They aren't trying to ban private sales, just require background checks.
I think you're making that up, where did you get the idea most illegal guns are bought by girlfriends?
I bought a new gun from a dealer at a show in Florida with no check myself once, so nope. You're just wrong.

I feel like you are almost certainly just parroting right wing claims without actually seeing if they're true. Give me current bill numbers in the house or Senate please.

Banning modifications is not anti gun, it's anti modification.

You can buy guns online, just not safely or legally. You can buy prostitutes and fentenal online. You can buy kits that require you to make one drill hole to make a functioning unlicensed unregistered unidentifiable gun online legally.

Crazy people can certainly buy guns, in private sales with no background checks. That's why the loopholes should be eradicated, or do you support giving terrorists a method to secretly buy guns legally? That's the outcome of fighting closing loopholes.

The Looters

ant (Member Profile)

Rollerblading across the U.S. to restore faith in people

MilkmanDan says...

Cool.

I was interested enough to try to find information at circa.com, as suggested at the end of the video. Nothing immediately popped out at the top level domain, but a google search found a short story there where the last line was a link to her personal webpage:

https://yaniseho.com/the-bladress/

She's currently in Nebraska, with 169 days on the road and 2747 miles traveled. Not sure if she had phone/GPS issues or what, but there's a jump from day 93 to 119 as her position went from roughly NYC to Buffalo in that time.

I wonder if she's done any wheel and/or bearing replacements in her skates. Her frames/chassis look like Wizards (nice heavy-duty but light aluminum) with a quality boot that I can't recognize for sure but might be a Seba. Anyway, looks like relatively high-end, durable gear!

CeramicSpeed 99% Efficient Drive Shaft // Chain Free Bike

AeroMechanical says...

Yeah, neat idea, but I'm not seeing the applications outside of (maybe) high end competitive racing where a few percent efficiency (that isn't offset by losses elsewhere, like weight) is worth it. In that case the aluminum would be okay because you'd just replace it after every event. For the likes of e-bikes and such, on the other hand, if you're going to use a shaft drive, why not just put the transmission entirely on the drive sprocket (maybe with a CVT like Netwboy suggets). This thing, as a whole, strikes me as too much out-of-the-box engineering without actually leaving the box. Of course, all that said, I'm always in favor of trying new engineering ideas so I approve.

CeramicSpeed 99% Efficient Drive Shaft // Chain Free Bike

newtboy says...

I thought this lends itself to a spring loaded spiral shaft automatic transmission, where the more torque applied, the more it compresses the spring towards the front crank, lowering the gear you're in. This could be adjustable, allowing a rider to select how hard they want to pedal and automatically adjusting the gears to keep that force stable at any speed.
A second gear in the rear, rotating in the opposite direction and sandwiching the drive gear, would go a long way towards stopping slippage and gear wear. They certainly need to ditch the aluminum gears, though.
Just what sprang to mind when I saw it.

ChaosEngine said:

I'm curious to see what mechanism they use to change gears.

CeramicSpeed 99% Efficient Drive Shaft // Chain Free Bike

A-10 Thunderbolt II Brrrrrtt Compilation

Ashenkase says...

The standard ammunition mixture for anti-armor use is a five-to-one mix of PGU-14/B Armor Piercing Incendiary, with a projectile weight of about 14.0 oz (395 grams or 6,096 grains) and PGU-13/B High Explosive Incendiary (HEI) rounds, with a projectile weight of about 13.3 oz (378 grams or 5,833 grains).[9] The PGU-14/B's projectile incorporates a lightweight aluminum body, cast around a smaller caliber depleted uranium penetrating core.

The Avenger proved lethal when tested against M47 Patton tanks in 1979.

Lethal.

How thieves steal keyless tech cars

spawnflagger says...

in @eric3579's 1st reply above, there is video of such a box that prevents this attack. Similar idea to a 'faraday cage', but they found that cardboard box lined with aluminum foil was most effective.

00Scud00 said:

I'm surprised that these things put out a strong enough signal to get out of the house. Maybe build a case for the fob that cuts off the signal unless you hit a button and exposes enough of it for the signal to get out?

Transparent Aluminum

newtboy says...

They did invent a new, amazing, transparent metallic compounded never seen before with properties that outperform natural and synthetic aluminum oxides, which until now were not fully transparent. Did you even watch the video?

As the inventors, they get to name it. Transparent aluminum is a good, descriptive name, imo. You can disagree, but if you insist it's not aluminum you'll be contradicted.

Do I call rust "iron" in normal conversation with non scientists, no.
In chemistry class, yes, it's oxidized iron, so "iron" is right.
Would I be silly enough to claim it's NOT iron, absolutely not.

Jinx said:

Aint nothing I like more on a hot day than a coool glass of liquid hydrogen.

AlON is fine. I guess my point was that transparent compounds of metals aren't exactly uncommon, and neither is compounds having quite different characteristics to the elements from which they are composed. So it just seems silly to act like they've invented some amazing transparent metal.

Do you call rust iron? "Look at this chassis, its COVERED in iron! It's practically all iron all the way through!"



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