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Flying by 2017-01 - Fri, 06 Jan 2017 19:50:34 EST ID:cbS5u/gp No.7037 Ignore Report Reply Quick Reply
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Anyone here likes jets? Helicopters?
Samuel Hemmercocke - Wed, 01 Mar 2017 15:06:37 EST ID:El6x3uF1 No.7111 Ignore Report Quick Reply
they should get rid of the cockpit and dumb down the f16 since it is going to be disposable

Newclear Womb by Skit Pwn - Mon, 30 Jan 2017 20:27:23 EST ID:xYshtut8 No.7041 Ignore Report Reply Quick Reply
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Does anyone have a copy of Multiphase Flow Dynamics 2: Mechanical Interactions by Nikolay Kolev? If not, where would be a good place to download it? I can't find any torrents.

If not, than hey here's a guy who says things...
Cyril Pittbanks - Fri, 03 Feb 2017 13:22:40 EST ID:LMSWX1C6 No.7042 Ignore Report Quick Reply
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Simon Crumbledetch - Wed, 22 Feb 2017 16:50:34 EST ID:E/liXdBm No.7044 Ignore Report Quick Reply
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SUPERLOOOOOOP by Nigger Pivingwidge - Tue, 13 Aug 2013 16:36:10 EST ID:NBJ0w/MW No.5836 Ignore Report Reply Quick Reply
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Musk finally put out some information on his hyperloop public transportation idea. It looks amazing, but I'm not really /tesla/ enough to know if it's really viable. Anyone here want to take a look? The attached link is the full text of the proposal.

5 posts and 1 images omitted. Click Reply to view.
Nicholas Sipperdale - Wed, 03 Feb 2016 17:46:19 EST ID:+u3PHuSh No.6892 Ignore Report Quick Reply
It's a short paper, and it's written in a casual manner, not like a dense near impossible to read academic journal.
Esther Breblingfield - Sun, 07 Feb 2016 04:34:33 EST ID:aW2jiyGc No.6896 Ignore Report Quick Reply
I hang out with Carlos mecia behind the del taco
2017-01 - Fri, 06 Jan 2017 20:53:35 EST ID:cbS5u/gp No.7038 Ignore Report Quick Reply
What's wrong with trains or light rail?
Henry Drallykog - Thu, 19 Jan 2017 10:22:22 EST ID:JLlZ+fjU No.7040 Ignore Report Quick Reply
The Hyperloop: BUSTED!
Simon Crumbledetch - Wed, 22 Feb 2017 16:51:55 EST ID:E/liXdBm No.7045 Ignore Report Quick Reply
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copying old parts by Wesley Clunnermodging - Thu, 26 May 2016 00:35:47 EST ID://p8h2A8 No.6963 Ignore Report Reply Quick Reply
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hey /tesla/

I'm an eletrical engineer that likes to work on old cars. While bidding on a nos battery bracket for my current project, it dawns on me, wouldn't this shit be cheaper if the people that had the parts, scanned them and got new stuff made, instead of us all bidding the few remaining parts up?

Does anyone know how I can get into making copies of the parts I have so others can use them? 3d scanning?

Some of these parts are pretty simple. Just various bent bits of metal with bolt holes and you assemble them into brackets for mounting this and that. I would think I could draw that up in autocad or solidworks. But finishing it is a bit beyond me. I have like 2 years of autocad but I was never trained on how to select metals or what I've always called "fit"

Like, how do I even draw the bold holes and the botls just right that when they build it for me, all the shit goes together just right and isn't too tight?

Can anyone help me with this?
1 posts omitted. Click Reply to view.
M - Tue, 31 May 2016 04:17:42 EST ID:l8g6dMpE No.6966 Ignore Report Quick Reply
Although 3D scanners exist (see link below) I`d advise what >>6965 mentioned and using your calipers to measure the parts, and either put it in a spreadsheet or draw them in free 2D or 3D CAD software (or AutoCAD if you happen to have acces to it). Mechanical parts are usually as simple as poissible and have rounded sizes in either inches or mm, so you`d probably be able to draw them without too much effort. As for hole diameters for bolts and stuff. there are tables for this on the internet you could use. Finally I`d advise 3D cad so you can draw the surrounding stuff as well. That way you can very easily see if a part you made fits or needs to be altered. If you still cant figure something out, you can probably find someone on the internet that is willing to help you out.

3D scanners do exist with a precision of about 16microns they are probably incredibly expensive.
Ernest Fisslebutch - Thu, 02 Jun 2016 17:12:36 EST ID:IZhvBj47 No.6968 Ignore Report Quick Reply
>3D scanners do exist with a precision of about 16microns they are probably incredibly expensive.
How does it work?

I wonder if you could archive such a resolution by mounting a gopro on a 3-axis cnc router and using the stepper resolution as reference to record a light field that can be resolved into a high resolution 3D model.

Or could this be the first real application of these lidar chips published in last years research?
Jack Honeyspear - Thu, 09 Jun 2016 11:45:51 EST ID:LMSWX1C6 No.6971 Ignore Report Quick Reply
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Go watch Dan Gelbart's series on prototyping and get a feel of how to become independent and less reliant on premade solutions for parts that you can belt out in minutes with some elbow grease. Some shears/tin snips/wire cutter/cut off wheel to cut the rough shape out. A drill press to drill and hand shape the rest(or hand drill and rotary hand tool). Brake bend with a few pieces of scrap board and c clamps, heat the radius with blow torch if it's really thick and use some harbor freight welding gloves to handle. If it can't be simply bolted and locktighted together, or glued, than consider making a spot welder from some microwave parts at some point.
As far as material. 10-14 ga. is probably fine for most project brackets. If things are under load then the housing, struts, bearings, and suspension systems take care of that, not mounting brackets.
Old appliances like computer panels and such are free source of thick sheet. Old tins from holiday containers are another source of thinner material.

Obviously he has hundreds of thousands of dollars of machinery at his disposal, but with the suggestions I made above you have alternatives for pennies on the dollar.


Some other things if you like having a layed out plan that helps are: dykem, paint pen, calipers, scribe, scale or carpenter square, radius gauges, and a compass.

CAD experience is kind of pointless if you don't have real world field experience. Don't turn into one of those guys that have twenty different true position tables and +/- .0001" on every dimension for a part that only needs saw and drill hole tolerances.
Get your hands dirty and make yourself a valuable go to designer.
Ian Denkinkatch - Fri, 05 Aug 2016 06:56:19 EST ID:/GtFGFci No.6979 Ignore Report Quick Reply

Some top quality advice from this guy. I agree with this so much it makes me wonder if I got drunk, posted this and then forgot about it.
2017-01 - Fri, 06 Jan 2017 19:40:43 EST ID:cbS5u/gp No.7036 Ignore Report Quick Reply
Borrow/rent some usage time from the local uni or science facility

Anyone built a free energy device ? by Rebecca Packlepure - Wed, 23 Jul 2014 12:30:50 EST ID:fTAGL71n No.6417 Ignore Report Reply Quick Reply
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I did and it sort of works.
13 posts and 4 images omitted. Click Reply to view.
Charlotte Gullerdere - Wed, 07 Dec 2016 16:10:21 EST ID:l8g6dMpE No.7028 Ignore Report Quick Reply
Forgot to add;
They would be awesome to play with though. Would love to make one some time.
Beatrice Gollyhitch - Thu, 08 Dec 2016 18:50:07 EST ID:ThLNXh+v No.7031 Ignore Report Quick Reply

thank you , puts it nicely into perspective
Betsy Turveyfield - Sun, 11 Dec 2016 20:47:08 EST ID:GWmaubj1 No.7032 Ignore Report Quick Reply

I've never seen these before but by the looks of it you can increase the power generated by using a bigger antenna. As something to translate reported voltages in to something relatable, the amount of energy stored in a capacitor is determined by the size of the capacitor and the voltage.

energy in joules = capacitance in farads * voltage^2 / 2
energy in joules = power in watts * time in seconds

So a 1000uF cap charged to 100 V has 5 joules of energy stored. If you could convert it to whatever kind of power you need with 100% efficiency it could run a 1 watt load for 5 seconds.
Lillian Womblehedging - Mon, 19 Dec 2016 03:08:43 EST ID:WiAbb/Pm No.7033 Ignore Report Quick Reply
Maybe we can get some slav to buy a bunch of car batteries and raid the local Radioshacks and hook this shit up to the Duga's over in Ukraine.
Nigel Nirrybure - Tue, 03 Jan 2017 20:37:26 EST ID:KdBRMlw9 No.7035 Ignore Report Quick Reply
theoretically would the circuit, if there is more length on the connected diodes , produce more voltage?

Cheap/free Mechanical Engineering 101 resources? by Cedric Passlefoot - Sat, 24 Oct 2015 21:36:21 EST ID:gQzPZ5om No.6824 Ignore Report Reply Quick Reply
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Basically what the title says. I have an intense interest in Mechanical Engineering. I want to pursue a career as an Auto Mechanic and will be attempting to get into a decent college that has both automotive and mechanical engineering programs. But while I'm waiting on that I figured it best to educate myself outside of school I suppose. So I'm looking for a place to get really cheap introductory textbooks on the matter, maybe free or cheap online PDF's as well. Does anybody have any suggestions?

I know that taking courses in Mechanical Engineering isn't exactly a requirement to be an automotive mechanic but I want to create, design, and fabricate as well as do repairs. I seem to have at least a little bit of a latent talent when it comes to machines as I managed to partially disassemble an old motorcycle engine to replace a bad valve and gasket as well as adjust the timing chain after only watching a short instructional video. Sure I had to take apart and put the engine back together a few more times before it fired up but, hey, I got it. And this was with no prior experience with that sort of thing.

I also seem to really enjoy the work, I found it intensely fun. Anyway, I digressed quite a bit there. I was looking for books/resources on things like learning how to do C.A.D. and/or how to draw up design plans on a drafting table (do people still do that?). The math needed behind the subject (math comes naturally to me, especially things like geometry and calculating ratios which I think has at least a little to do with all of this?) As well as general education on the matter. I can't really give any specific examples but, I figured I'd start broad and work my way into more of a specialized area. I want to design everything from internal combustion engines (new and exciting configurations!) to glider planes. In essence I suppose I want to focus on vehicles and transport in general.

Anyway TL;DR - Cheap and/or free mechanical engineering resources, anyone? please?
2 posts and 1 images omitted. Click Reply to view.
M - Fri, 30 Oct 2015 04:53:18 EST ID:orqtNuyi No.6829 Ignore Report Quick Reply
I of course don`t know your financial situation, but I honestly think those books are way to expensive for just interest. I`d suggest only buying them if you are entirely sure what you want to do this.
Also; I`m in my uni library right now and found a book on CAD and heat engines, although I have absolutely no clue wether these exist online or not, here are the titles:
Engineering drawing & design, C Jensen J Helsel D Short
Heat engines A Walshaw.

I think both books are of interest to you.
Good luck.
Isabella Shittingford - Fri, 22 Apr 2016 01:10:31 EST ID:7b780Sco No.6951 Ignore Report Quick Reply
Nobody drafts on paper anymore...just kiddies in high school in an introduction to drafting class. I learned everything I needed to know about CAD (Pro-Engineer/Solidworks) via the internet and torrent sites. You can easily torrent a bootleg copy of either solidworks or Pro-E. I would say that solidworks is the more intuitive of the two and you can probably find some accompanying pdf text that will teach you the basics. Otherwise, Youtube is a treasure trove of tutorials for that. Good luck and have fun!
Graham Bliddlestadge - Sat, 28 May 2016 23:45:03 EST ID:Zl+5ngCO No.6964 Ignore Report Quick Reply
>implying mechanics in America are highly trained and qualified
Most of them are white trash. Go be a helper at a shop and they'll teach you what you need to know. Most places care about experience unless it's in the plants or government work.
Sophie Clayspear - Sun, 21 Aug 2016 04:46:03 EST ID:7YnJeYuF No.6988 Ignore Report Quick Reply
Machinist's Handbook. Anything you could ever need will be in there. Mechanical Engineers are all pencil pushing know-it-alls cunts. I hate Mechanical Engineers. I left the field behind because of those shallow pedantic fucks. Engineer school teaches you a bunch of shit when a Machinist's Handbook would cover everything you'd use in the real world.

Pirate some ansys software, solidworks, Mastercam and blender. Learn them in that order, backwards. Ansys will be great, way way way down the road for you. Blender is good right now and it has input values so you can test designs to make sure you won't run into costly errors. It is going to take a ton of dedication but you can do it if you want it enough of course.

Machinist's math textbooks are aight. The rest are a waste of time or far too overly complicated to make engineer school more of a pain.

>Seriously though, Machinist's Handbook. Outside of design and that sort of shit, anything you need fabwise will be in there. And millions more.
Hugh Dronningman - Mon, 28 Nov 2016 07:38:48 EST ID:IjPN+/1M No.7019 Ignore Report Quick Reply
MIT has literally all the resources(lecture recordings, textbooks, software ect) necessary to get a complete undergraduate education in mechanical engineering available to download for free


tool by Betsy Tootlock - Fri, 25 Nov 2016 07:29:05 EST ID:LcB05FSQ No.7018 Ignore Report Reply Quick Reply
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What's the tool called he uses to remove the bolts at 1:10?

Rebecca Ginnerstare - Wed, 07 Dec 2016 22:01:19 EST ID:dLNwpFpO No.7030 Ignore Report Quick Reply
I would call that a ratchet driver.

Tesla Stuffs by Reuben Bubberbotch - Thu, 14 Feb 2013 21:10:41 EST ID:7rz8obbR No.5412 Ignore Report Reply Quick Reply
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First year computer engineering student here, with failed subjects.

Well, what drag me into the waters of engineering is all about Tesla and his stuffs. Skeptical, as always, why his stuffs and other stuffs of aspiring people when it comes to Free Energy isn't wholly, or eventually, seriously taken by people.

It's quite mind-boggling for me, I don't even get how much 'value' it is for one to pursue this stuff. I mean, other people already did, no one gave a fuck and here am I just sitting here trying to conclude on a pessimistic matter on what could fucking happen on the next fucking years, or even decades.

I was literally keeping a library of all of stuffs related to free energy, like almost 40gb of it stored on my HDD. Just.. just irritating on why am I thinking this way.
9 posts and 2 images omitted. Click Reply to view.
Fuck Worthingway - Fri, 23 Oct 2015 13:53:21 EST ID:7JSxEYqU No.6822 Ignore Report Quick Reply
I always wondered about the tesla turbine and it's efficacy. Tesla claimed it could reach 95% of it's carnot efficacy while contemporary ones top out at 90%.
The best small scale implementations are about at about 40-50% which is miserable. But I haven't seen anyone really try.
The geometry of the holes inside the disks for instance could be optimized with FEM and fluid simulation.
And in principle a tesla turbine could be made out of other more temperature resistant but more difficult to machine materials enabling it it operate at higher carnot efficiency.
At last it's very easy to machine the parts with just a regular three axis router and a lathe.
Henry Bammledure - Sat, 24 Oct 2015 04:27:06 EST ID:l8g6dMpE No.6823 Ignore Report Quick Reply
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The university of applied sciences where I study actually has a yearly challenge where anyone can show up and test their turbine.
The university is currently doing more theoretical research to improve efficiency.

The actual main advantage over classical turbines is that you can use wet steam, the small droplets in wet steam can destroy normal turbine blades (pic related, although I literaly took the first google hit).
And although I`m not sure who did, but Tesla didn`t claim the 95% stuff, someone else did, a lot later.
Oh Niner - Thu, 15 Sep 2016 07:42:54 EST ID:m4ZDEG1O No.6989 Ignore Report Quick Reply
Tesla makes nice EV cars. Wait.. it's Elon Musk?
Eugene Sondlefoot - Fri, 11 Nov 2016 07:12:16 EST ID:v644jtd6 No.7014 Ignore Report Quick Reply
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Lydia Curringnatch - Sun, 13 Nov 2016 09:00:06 EST ID:4M/IZJux No.7015 Ignore Report Quick Reply
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FFFF by Emma Daffingdock - Sun, 06 Nov 2016 00:32:25 EST ID:PXawepa+ No.7013 Ignore Report Reply Quick Reply
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Damn, no wonder military technology is still in the 70's.

Offshore expansion by Nathaniel Drapperhall - Sun, 14 Dec 2014 18:42:04 EST ID:y/HQD3oY No.6594 Ignore Report Reply Quick Reply
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Let's talk Sealand and other offshore constructions.

I'm no engineering expert, which is why I'm asking you guys this. If someone were to somehow acquire an offshore structure such as an oil rig, would it be possible to expand off of it? How would this be done? At what point would support struts be needed to hold up any extra land?

Yes, I was thinking about Outer Heaven.
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Hamilton Senderhall - Sun, 03 Apr 2016 09:20:26 EST ID:w9V7HL/2 No.6941 Ignore Report Quick Reply
Shitting Gottingstodge - Thu, 21 Apr 2016 19:14:39 EST ID:uywTW9Q3 No.6950 Ignore Report Quick Reply
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It depends on what shape the platform is in, and where it is. A software salesman bought this 85-foot high platform in the Atlantic Ocean in 2010 for $85,000 (then he paid $100,000 to repair it and refurnish it) and now it's a small hotel.
Basil Suddlewell - Thu, 22 Sep 2016 04:16:06 EST ID:+tz+iBph No.6990 Ignore Report Quick Reply
Just don't try it near Italy or Haiti.
Eliza Pittville - Fri, 23 Sep 2016 09:09:13 EST ID:BKy0pcqN No.6995 Ignore Report Quick Reply
Well, Sealand is a WW2 fort, Frying Pan is a lighthouse designed after oil rigs, and Rose Island was a purpose-built structure, presumably again patterned after oil rigs.

Any micronation better be prepared to defend itself, established nations HATE micronations, and other people with the micronation bug have been known to take over established ones by force.
Basil Pedgelock - Mon, 31 Oct 2016 10:21:50 EST ID:mCRRFwWn No.7012 Ignore Report Quick Reply

Electrical engineering by Nell Hecklebury - Mon, 17 Oct 2016 08:20:05 EST ID:JoiHGtE7 No.7008 Ignore Report Reply Quick Reply
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Hi i am at the 2nd year of computer engineering however i must study a bit of electrical engineering but from my book i don't understand a single word
anyone can suggest me a book or a site where everything is explained well?
Alice Duckstone - Tue, 18 Oct 2016 13:03:13 EST ID:LMSWX1C6 No.7009 Ignore Report Quick Reply
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Like what sort of stuff don't you understand, what book do you have, and what's the outline of the course?
I'm guessing you're also ESL, which is going to be detrimental if you lack communication skills.

Chinesium by Basil Suddlewell - Thu, 22 Sep 2016 04:22:38 EST ID:+tz+iBph No.6991 Ignore Report Reply Quick Reply
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So, what is this magical, and presumably very cheap substance that Chinese $2 shop crap is made out of? Is it metal or plastic, or some combination of the two?
Has anyone tried analysing this crud, or how they make things out of it? It seems too brittle to be machined, maybe it's moulded and sets like that play-dough stuff you bake in an oven. But put it under mechanical stress and it deforms, tears and crumbles like cake. Sometimes it has sparkles!
1 posts omitted. Click Reply to view.
Cyril Dimmleford - Sat, 24 Sep 2016 00:25:46 EST ID:F9kDEmRB No.6996 Ignore Report Quick Reply
Be careful with the sparkles, they're toxic.
Eliza Driffingfield - Sat, 24 Sep 2016 03:27:18 EST ID:F2XRo4mh No.6997 Ignore Report Quick Reply

These locks are amazing. Are they made of candy?
Samuel Bubbertadge - Tue, 27 Sep 2016 22:50:53 EST ID:LMSWX1C6 No.7002 Ignore Report Quick Reply
They're just made from pop steel you'd use for bottom barrel part fabrication. They're not even case hardened for the full length, as far as I'm aware.

Yeah, don't fuck around with garbage cutting tools. They'll bite you more than the material. If the manufacture isn't willing to provide you a name of the material it's tool is made from, I'd be hesitant. You know something telling you it's a M42, M2, C2, C12, etc.
Isabella Dregglestone - Wed, 28 Sep 2016 05:55:39 EST ID:2R1lBWwz No.7003 Ignore Report Quick Reply
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I love the drill-bit where the threads have straightened out like spaghetti.
You Google image search for Chinesium and it's like a mechanical hall of shame.
George Nuckleworth - Wed, 05 Oct 2016 23:23:52 EST ID:ZMpXliD1 No.7007 Ignore Report Quick Reply
industrial supply places are the best for stuff like this. The bits I get at my shop are pretty solid.

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