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

Published: Tue, 19 Sep 2017 18:00:00 EST

Copyright: Copyright 2017

Computers, Smart phones and Artificial Intelligence

Tue, 19 Sep 2017 17:46:57 EST

From the dawning of computers, it was only the computer "geeks" who could communicate among themselves excluding the rest of the world. It became a closed society that only computer geeks could reside within. To this day, it is still a closed society. Computer language was the sole province of thos


Tue, 19 Sep 2017 13:08:28 EST

Dear All, we have 125KVA Generator, whose AVR has been burnt, Its rating was 38V, 1.9A. Can we replace with ratings 60V 4A or with 80V 5A. Thanks for your expertise in advance.

Bare Nuetral in 15kV SWitchgear "UTILITY APPLICATION"

Tue, 19 Sep 2017 12:10:20 EST

Greetings, In a 15kV outdoor switchgear supplying underground to over head lines, concentric neutral is used in cable underground from switchgear and transitions to bare overhead line. The concentric neutral is landed in the switchgear bare ground buss 100% phase rated. The neutral to ground bond i

Electrical specifications for BOSCH ignition coil No. 0221119027

Tue, 19 Sep 2017 10:09:49 EST

I am looking for this information which I could not find on internet or from company. Electrical specifications for BOSCH ignition coil No. 0221119027. Key parameters I am looking for are Maximum input coil voltage and maximum input coil current Minimum and maximum pulse width required for co

Britain is about to end its 250-year use of coal for power generation

Tue, 19 Sep 2017 09:56:31 EST

pole power

Tue, 19 Sep 2017 03:29:33 EST

Out in the oil patch in west Texas they have many remote spots running 480 volt three phase pumps. This is a disconnect for one such application, (sorry could'nt figure out how to get the picture rotated) I'm trying to figure out how this works. The 'B' phase has a copper bar to ground yet they can

Where Do Our Members Live Today

Tue, 19 Sep 2017 00:43:32 EST

In 2009 Kris posted this: Is the average CR4 member in Timbuktu ? Has anybody done a more recent demographic study? I didn't find one, but that does not mean there are not any.

Brew Anything Good Lately?

Mon, 18 Sep 2017 19:58:51 EST

I've brought it up before and I thought I'd do so again in light of some good stuff coming up with yamdankee's brew. Most of my home brewing has been finding clone recipes of my favorite beers because I'm too scared of experimenting and failing and also a little too lazy to come up with my own recip

Singapore F1 Race 2017 Vettel Crashes Out!!

Mon, 18 Sep 2017 19:16:32 EST

I watched the race live and recorded it twice on two different recorders! F1 nut? I was watching the footage for the umpteenth time, and I suddenly noticed how close Vettel got to Hamilton, just after the crash! Him knowing his car is losing water, told by the box crew!! He knows he cannot finish

High Accuracy Temperature Indicator

Mon, 18 Sep 2017 15:15:32 EST

I need high accuracy temperature indication for water at ambient temperature... range 0 - 50 deg C The combined accuracy needed including sensor inaccuracy and indicator inaccuracy is better than 0.1 deg C and resolution 0.01 deg C The sensor should be PT 100 (3 wire) , which can be integral or re

Guess the Architecture for 9/19/2017

Tue, 19 Sep 2017 18:00:00 EST

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

Big. Yellow. Different. Yellowstone-Used White 706 Bus Lets All the Light In

Tue, 19 Sep 2017 13:00:00 EST

Ironically, while Alexis de Sakhnoffsky’s designs emphasized streamlining and speed, the 14-passenger bus he drew up for White to sell to tour operators in Yellowstone—one of which will cross the auction block this fall—was intended for a far more leisurely pace. Until 1916, visit

Woman of the Week – Bessie Coleman

Mon, 18 Sep 2017 20:30:00 EST

Bessie Coleman was the first African American woman to stage a public flight in America and first to hold a pilot’s license. Born to a family of sharecroppers in Texas, she went into the cotton fields at a young age but also studied in a small segregated school and went on to attend one term

Staying Cool: Increasing the Lifespan of Your Electrical Components

Sun, 17 Sep 2017 04:00:00 EST

Warm temperatures can wreak havoc on electrical components and other manufacturing machinery. Heat may cause system failure, thermal aging and reduction in thermo-mechanical cycle life. To prevent catastrophic equipment failure, it is important to be familiar with potential issues and solutions. B

Advice from the Locals

Sat, 16 Sep 2017 04:00:00 EST

Having come of age in a town that was (and continues to be) a major attraction for sports enthusiasts, I understand the adolescent joy derived from “screwing” with tourists—giving them wrong directions or directing them to allegedly historic local attractions that would end up bein

Caption This for 9/15/2017

Fri, 15 Sep 2017 20:45:00 EST

This week's image: Thanks to user Nigh for the submission. As a reminder, we're always in need of submissions! Be sure to vote for your favorite caption.

Which Four-Door Performer Could You Imagine in Your Driveway?

Thu, 14 Sep 2017 13:00:00 EST

I’ll admit up front that I’ve always preferred vintage two-door performance cars to those with four-doors. That said, it doesn’t mean that I’d never own a four-door version, but it begs the question which one? In my case, I think my first choice would be a 1973 or 1974 Ponti

Are America's National Parks Too Popular?

Thu, 14 Sep 2017 04:00:00 EST

As my kids have gotten older, hiking has become one of our favorite activities. I live a short ways from the Adirondack Mountains and Adirondack Park, so the sky’s the limit for hiking opportunities. Earlier this summer I read about a trend that many ADKers find disturbing: too many people are

Finally, a Blog on Additive in Precision Machining

Wed, 13 Sep 2017 14:15:00 EST

I’ll admit it, I’ve been a bit of a curmudgeon regarding Additive Technology in manufacturing. While everyone in the trade press seems to be gushing breathlessly about additive technology like a bunch of tweens waiting for their first One Direction concert, I’ve stayed away. I&rsq

The VW Microbus is Back, But This Time It’s Battery-Powered

Wed, 13 Sep 2017 13:00:00 EST

“Iconic” is an overused adjective, but in the case of the Volkswagen microbus, officially the “Type 2 Transporter,” it’s a fitting one. The van, indelibly linked to the 1960s, carries a shape that’s almost universally recognized, and despite its shortcomings, rest