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How a 50 Caliber Tround Machine Gun Works

artician says...

At any point do they explain the benefit of triangular rounds? How do they keep the barrel from overheating like they do in other high-volume projectile systems? Is that the benefit of the open chamber?

Origami gate is cool

newtboy says...

Excellent. I love to see someone take something as ubiquitous as a swinging garage door and make something new and different to perform the same task.
Keep in mind this is just the framework. I'm sure they'll cover it with something to make it a real useable door/gate with 4 triangular panels per side. A mosaic design that works open or closed seems perfect.

*quality design.

Duke Engineering's new four stroke "axial" engine

newtboy says...

A rotary (Wankel) engine has a triangular device that acts as the piston, which rotates in a chamber close to a figure 8 shape. Each side of the triangle acts as it's own piston as it rotates, first intake through a port (no valve) then compression, detonation, expansion, and finally exhaust through another port (still no valve).
Radial engines (what I think you meant) are relatively normal piston driven engines where the pistons are arranged in a circle around the crank at a 90 deg angle from the cranks rotation. These are usually used in prop driven airplanes.
This motor arranges the pistons in the same orientation as the cranks rotation...a 90 deg difference from radial engines. This makes it far more compact, but also puts the pistons in a single, rotating, revolver like arrangement of cylinders. It's a bit of a combination of rotary and radial engine features.

artician said:

How is this different, or more efficient, than a Rotary Engine:
http://en.wikipedia.org/wiki/Rotary_engine

(Videosift should add support for HTML links... wait, what?) @dagg

radx (Member Profile)

bareboards2 says...

Ah, I can see you have a FORT in mind. There is no FORT, really. The whole area is the Fort, the land itself. The "blocking fort" ARE the bunkers -- on top of the bluffs and at water level. There are two other forts in a triangular shape -- one on Whidbey Island and one on Marrowstone Island. The idea was if any boat came into the waters of Admiralty Inlet, one of the forts bunkers' big guns could take them out.

The bunkers are all still there. They were going to jackhammer them away, but they were made from imported Belgian concrete and they just would NOT break up.

So you can go crawling around in all sorts of bunkers. Some of the rooms have had their doors welded shut, for safety reasons. But there are plenty to explore.

These three forts aren't on an estuary, however. It is ocean water, but not the ocean. The Pacific Ocean stops about where the Northwest corner of the Olympic Peninsula is kind of south of Vancouver Island, in Canada. Things get narrow there, and the ocean waves can't reach. Or something. So there are bodies of water that ships and boats follow going east, then they turn south to Seattle, which is on the coast of Puget Sound.

It's all very confusing. I can never figure out which way is north. Port Townsend has water on three sides, fer pitys sake!

Oh, and they did remove the big guns, even as they left the bunkers. You can see where they were and get a good sense of how big those guns were.

None of the three forts ever shot in anger. Just practice.

Exactly! "Shop fronts" only.

So when are you coming to America? It is beautiful in my part of the country, albeit very young by European or even East Coast standards. We are very proud of our oldest building. I think it was built in 1875 or something. Maybe even later. Ha.

radx said:

Was it just the location of the blocking fort in PT or the general construction of forts at the mouth of the estuary in the first place? And is there (supervised) access to the entire facility or are some parts, say munitions bunkers, still off limits?

An Officer and a Gentleman, I know that one. Looking at pictures of the fort, you can even recognize one or two locations. So they refurbished the sides the needed and left the rest untouched, like the shop fronts in Northern Ireland during last year's G8?

Sleeping Guitar Player - Prank

Chinese Farmer Creates Wind-Powered Car

Barbar says...

The point I was making was that if air passes through the turbine, (I am assuming) it leaves with a portion of the turbine's forward velocity imparted upon it. If this is the case, then doesn't it mean that the car's chassis, following directly behind the turbine will experience less drag, since the relative wind speed is lower? So if the drag on the car's chassis is reduced, and a portion of the drag increase from the turbine is gathered by the generator, doesn't it get a bit more complicated? Again, this isn't the same as the trivial example of a fan on a sail boat (which due to triangular sails and keels actually can work in a very limited fashion).

Yeah I know this is only likely to make me look more stupider, but I'm okay with that.

TRAIN versus COW - no blood / gore ( 13 seconds )

videosiftbannedme says...

Larry, I don't think that's a good idea.

No seriously! I saw it on Discovery channel. You know those triangular things mounted at the bottom front of a train? That's to push cows off the track! It won't even hurt me...it's just gonna push me off to the side.

Yeah, but I don't think modern trains...

Will you just trust me? It'll be fun! Watch, here comes one now.

Why Atheists Care About YOUR Religion

BicycleRepairMan says...

The Hitler argument is just a logical fallacy. It's called affirming the consequent.

This is the logic:
Hitler was atheist and was bad. Therefore atheists are bad.



This is of course entirely correct, the same goes for the argument "Hitler was a catholic, therefore Christianity/Catholism is bad" This is also a fallacy, for roughly the same reason.

HOWEVER, as I tried explaining before: The triangular unholy mess that is the three major monotheistic plagues, Christianity, Islam and Judaism and all its sub-species, are central to creating the whole mess. Infact, you could say these religions are what made the Jews a distinct "race" in the first place. The propogation of these ideas for hundreds of years is what led people to believe that Jews were somehow this hive-minded entity that could be praised or, more commonly, blamed collectively as if they were a single individual, hence the insulting referrence "The Jew" when referring to a whole group of people. You only need to look at parts of the islamic world to see how Jews are still demonized as ritualistic murderers and that they drink the blood of baptized babies (or palestinian babies, depending on which fantasy you subscribe to) and all sorts of nonsense. As I previously stated, the idea that Jews can be blamed collectively for something is absurd. But Judaism, on the other hand, is not without blame, this idea, this religion is at times just as poisonous as Islam and Christianity, and it is partly responsible for the death and suffering of thousands of people, the idea is central to establishing the idea of the "Jewish race" as a distint entity. "The Jews" are not to be blamed, even partially, for their own holocaust, but Judaism is. Some people are unable to make this distinction, and that problem frequently comes up when I try to say the same thing about Islam, whenever I critize that retarded idea, people assume I think all muslims are retards, which I , for the nth time, do not, just like "the Jews" they are not a collective mind, but individuals more or less infected by a poisonous idea.

Ray Bethell, the master Multiple-Kite flyer

choggie says...

Coolest way to make an easy kite #46....
Step 1-obtain 1/4 in thick wooden dowel...longer the better-
Step 2 Lay dowel on a large piece of plastic a bit wider than the dowel i long-
Step 3-mark where you will attach the dowel, by rolling the dowel up the plastic, till the ends are almost to the edges of the plastic-leave room for the point at the top..
Step 4 secure the rod to the plastic at both ends, however you wish....get creative, its not rocket science...(try a stapler and some cloth scraps-it need not be extremely rigid-
Step 5-secure another triangular shaped piece of light cloth to the center, where you tie the string...

the template for this plastic kite,is the regular, triangle and tail type.....now make a cheesy tail, and get that sucker up there with at least 500 feet of string, so people have to squinit, to see your bad-ass, homemade, kite....

the plastic and dowels are cheap...you can make about 30 kites for fifty bucks...Get Busy!!
Step 5-

Driving a mclaren F1 with your wife as copilot

Driving a mclaren F1 with your wife as copilot

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