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CR4 - Recent Forum Threads and Blog Entries

Recent content from CR4, The Engineer's Place for News and Discussion

Published: Wed, 22 Nov 2017 14:00:00 EST

Copyright: Copyright 2017

Engineering Survey For Product Creation

Wed, 22 Nov 2017 13:30:25 EST

Hello! I'm a student currently taking engineering for the 4th year in high school. Our final project is to create our own product and by the end of the year, finish creating it. Right now, we are at the stage where we are validating our problem and we need people to take our survey in order to move

Would it be Possible to Train Cetaceans to Help Look for "Lost" Equipment?

Wed, 22 Nov 2017 12:52:04 EST

I'm thinking about flight MH370, and, the Argentine submarine currently lost in the South Atlantic. Cetaceans are very intelligent and can communicate over huge distances, so, I'm speculating that it might be possible for a few trained animals to just ask: "Hey you guys, seen anything odd in the la

A Material that Expands Under Pressure

Tue, 21 Nov 2017 15:59:16 EST

I find meta-materials pretty fascinating. It's cool that through manipulation you can get things to behave in a way that is the opposite of what you would expect. A good example is a material recently created that expands when pressure is applied. I could imagine this would be a useful property for

Effect of Thickness on Auto Welding

Tue, 21 Nov 2017 06:55:18 EST

Hello everyone, I am a fresh graduate mechanical engineer and right now I am working at a fabrication company where we do welding and beveling for large pipes. these days we are working with a chines Company SEPCO to fabricate some pipes for them and for the sake of productivity calculation, they s

Room Thermostat

Mon, 20 Nov 2017 22:54:09 EST

A friend has a Honeywell T6360 roomstat on his heating system. Bi-metallic element with accelerator heater. On turning the knob to say 20°C to call for heat, heating starts but doesn't satisfy the stat till way too high, at least 25°C. So when he breaks a sweat he gets up and turns it down,

Infrared Sensor and Heavy Amounts of G Shock

Mon, 20 Nov 2017 21:43:45 EST

The picture at left is me beside our LENR hydrolysis reactor and calorimeter set up, taken a couple months ago. This picture at left is my buddy holding up the Infrared temperature sensor we had sitting on top of the reactor lid when it was blow off by spark-induced hydrogen-oxygen explosion. WOW

Distillation Generator

Mon, 20 Nov 2017 17:40:34 EST

The above contraption is a distillation segmented wheel, such that the shaded dark portion is always heavier with water than the illuminated portion of the wheel. Wheel axis is 45 ° off vertical, or other angle deemed optimal by experimentation for maximum output of water (and energy). Brackis

Urgent: Looking for an Engineer Familiar with Jet Vapor Deposition

Mon, 20 Nov 2017 15:23:50 EST

Hello, I'm a master engineer student specialised in manufacturing and for my thesis, I'm looking for an engineer who is familiar with the production process: Jet vapor deposition for a small interview (probably via mail). thank you in advance.

Desiccant Wheel Dehumidification

Mon, 20 Nov 2017 14:51:50 EST

I'm am engineering student and currently doing a project based on dehumidifiers "desiccant wheel" Q) Can any one please guide me about any material that would have a good efficiency regarding the dehumidification and their synthesis too. Q) Secondly please mention/suggest any composite material an

Solar Collector

Mon, 20 Nov 2017 13:51:44 EST

Been thinking for a long time to put this out and since there is never a good time it is maybe the best time to get it over with now. Its a hot topic, but poorly technical as a matter of fact. Here it goes. Solar collectors collect heat from the sun and generate heat for whatever use. Now there i

This or That – Season 2: 1971 AMC Hornet SST or 1973 Mercury Comet

Wed, 22 Nov 2017 14:00:00 EST

Featured in this edition of This or That are a couple of once-commonplace compacts: a 1971 AMC Hornet SST and a 1973 Mercury Comet sedan. Although these cars were assembled roughly 24 months apart, both were ushered from their respective assembly lines at an opportune time. Economy was just beginnin

Guess the Architecture for 11/21/2017

Tue, 21 Nov 2017 19:00:00 EST

Do you recognize this week's building? Care to take a guess?

The Saabs of Sturgis: Establishing America’s Saab Heritage Car Museum USA

Tue, 21 Nov 2017 15:00:00 EST

There have always been fine private collections of Saabs in the USA, but as far as we know–unlike in this automaker’s home country–there’s never before been a large-scale American museum, open to the public, whose core mission involves the preservation and display of Saab car

How Silicone Rubber Is Used for Sealing and Insulation

Mon, 20 Nov 2017 23:13:39 EST

How is silicone rubber used for sealing and insulation? Silicones have valuable properties, but engineers need rubber that meets specific requirements. If you’re wondering whether silicone seals, gaskets, or insulation are the right choice for your application, consider some of the uses for th

Chevrolet’s Corvette ZR1 Returns for 2019 with 755 Horsepower

Mon, 20 Nov 2017 15:00:00 EST

Based upon Chevrolet’s C6 Corvette, the last ZR1 model thundered off into the sunset in 2013. Since then, boost-loving Corvette fans have gotten by with the C7 Corvette Z06, which uses a supercharged 6.2-liter LT4 V-8, rated at 650 horsepower, to convert rear tires to white smoke. Next spring,

Cutting Wait Times for Restaurants with Google

Sat, 18 Nov 2017 05:00:00 EST

The geniuses at Google are doing life-saving work. Hear me out. Thanks to them, those of us impatiently loitering around the hostess stands at our favorite restaurants — desperately hoping that those seated will quickly shovel through their meals so that we can be seated — will no long

Caption This for 11/17/2017

Fri, 17 Nov 2017 21:45:00 EST

Here's this week's image: Be sure to vote for your favorite! Thanks Nigh for the submission. And remember, more submissions are always welcome!

AACA Museum’s Latest Exhibit Celebrates “Getting the Job Done: Vehicles that Earned Their Keep”

Thu, 16 Nov 2017 14:00:00 EST

Without commercial vehicles, modern life would grind to a halt rather abruptly. Despite their importance, these workhorses are rarely embraced by collectors, and the likelihood of a 1913 Ford Model T C-cab or 1938 Autocar tanker truck taking Best of Show at Pebble Beach lies directly between “

Say It Isn't So! Greek Theater Acoustics Aren't Perfect

Wed, 15 Nov 2017 14:55:49 EST

Have you ever heard that Greek theaters, at least some of them, had such perfect acoustics that the audience could hear a word whispered from the orchestra all the way up in what we might now call the cheap seats? I’d read this claim. When our tour coordinator offered an excursion to Epidaurus

SEMA Feature Cars, 2017: The Show Within a Show

Wed, 15 Nov 2017 14:00:00 EST

Though it’s been held annually since 1967, the SEMA Convention was not always a haven for specially designed and built show cars. Even after coming to Las Vegas in 1977, custom display cars were sparse. But the last decade or so has seen an explosion of show cars, particularly since the areas