Very nice. I love the idea of a rack mounted draw. I recently found a rack cabinet in a skip which I will be using for my home network. I was also suitably pleased in a nerdy way to find rack mount DIN rails exist.
The Manchester Baby, also called the Small-Scale Experimental Machine, was the first electronic stored-program computer and was built in 19" racks. It was built at the University of Manchester by Frederic C. Williams, Tom Kilburn, and Geoff Tootill, and ran its first program on 21 June 1948. You can see a working reconstriction in the The Science and Industry Museum in Manchester.
Something manufactured in the First Hastings, I grew up in the second Hastings (formerly) Hicksville in Hawkes Bay New Zealand. Being a British settlement there are a lot of place names and road names that are exactly the same.
I like the flexibility of the standard 1U entry point top and bottom allowing the use of a standard brush plate for cable entry. Might have to think about Penn Elcom again in the future just for that. Where's the earth strap for the door and cabinet though?
@@davidfaraday7963 BS EN 50310, also the door is generally the first thing anyone touches. High integrity earthing is also something that a lot of places insist on.
@@charlieecosta5592 I am not familiar with BS EN 50310 and am not prepared to pay £109 to find out what it says. Suffice it to say that in my experience doors are rarely fitted to rack cabinets and, when they are, they are usually glass.
Agreed its criminal that the BSI charges that money for 35 pages. It goes into the detail of configuration of earthing (like in data centres - star, ring, mesh, etc.) and makes reference to other standards... Glass is much easier! Another reason (as I understand) is to remove the build up of static away from any equipment.
@@charlieecosta5592 I am familiar with the need to segregate earth paths within equipment to minimise potential problems caused by volt drop across the impedance of a common earth path, and to keep the impedance of earth paths that carry signal currents as low as possible. However that is nothing to do with safety earthing.
In the TV production world we use 70” tall racks with the 19” width. 1RU(rack unit) = 1.75” tall. Equipment makers would specify gear in how many RU tall or full or 1/2 rack width.
@@gazzat5 www.screwfix.com/c/safety-workwear/work-trousers/cat850376 Some have pockets on the knees for kneepads to be slotted in when working on your knees.
Or you can get these Cargo pants - a designer, trendy, brand based on workwear - for three times the price which would not last a week on a building site. www.ubonlinestore.com/products/khaki-regular-fit-cargo-pants
@@ericturnipseed8664 Those work pants are common in the UK. To look the part they tend to all have them, and sometimes with a high-viz top. www.toolstation.com/hi-vis-bomber-jacket/p42211?store=PD&mkwid=s_dc&pcrid=515847200297&pkw=&pmt=&gclid=CjwKCAjwoNuGBhA8EiwAFxomAwG01R6cJT9sWdd3x2tTyK4Gc7rS64IURXc-RQsQ6kBx0GHw7Yn3pxoCMxoQAvD_BwE&gclsrc=aw.ds
Strictly speaking what you are showing are cabinets, not racks. A rack is just two uprights, a cross piece at the top and a base. Traditionally they were made from cast iron and weigh a ton, these always had threaded holes for mounting equipment rather than cage nuts. Those used in telephone exchanges in the Strowger days were normally 4 ft 6 in wide, 19 inch was only used for transmission equipment and similar items. I've had a 6 ft high 19 inch rack in the corner of my "man cave" for the last 35 years, having them in homes isn't new.
I’m an AV installer and really like pre threaded rails! What’s your reasoning behind preferring cage nuts out of interest? Guess it doesn’t matter too much if you accidentally strip the thread…
@@pahaywood1992 if you are mixing and matching a lot of units, that aren't as strict on spec pre threaded holes can be a pain, thread damage, if constantly swapping units is also a real issue, see also rail damage especially in mobile racks. It's amazing how often a little play in cage nuts will let you squeeze in a difficult unit.... And for really weird stuff you can cut the horizontal between 2 cage nuts and have an adjustable hole.
@@pahaywood1992 In addition to what Andrew said, I have some equipment (namely server rails but I've seen it frequently elsewhere) that requires the square gaps and doesn't screw in with screws, which would mean it's impossible to fit in a threaded rack. I don't see the need for cage nuts to be that big of a deal, just get one of those removal and insertion tools and it's a breeze.
I hate these bloody racks don't no how many times we have altered installations to accommodate them then they fit a huge box on the wall with 1 bloody rack in it you instantly turn into Norman bates
Not a back stop it a clamp down :) guys do some stuff with @artofsmart . also need a UPS, rear cable entry has holes to mount brush rail. Big in CCTV too.
oh my god i can finally sleep at night knowing these racks have been explained.
Rest easy!
Very nice. I love the idea of a rack mounted draw.
I recently found a rack cabinet in a skip which I will be using for my home network. I was also suitably pleased in a nerdy way to find rack mount DIN rails exist.
Please do more of this smart technology please love these new videos
Excellent presentation, well explained. These videos are getting better and better, especially for newcomers to the industry.
Thanks Hugh 👍
The Manchester Baby, also called the Small-Scale Experimental Machine, was the first electronic stored-program computer and was built in 19" racks. It was built at the University of Manchester by Frederic C. Williams, Tom Kilburn, and Geoff Tootill, and ran its first program on 21 June 1948.
You can see a working reconstriction in the The Science and Industry Museum in Manchester.
Great tip - the museum is a great day out with lots of electric stuff to see *Gordon.
Recently discovered that used the old 23 inch standard.
Something manufactured in the First Hastings, I grew up in the second Hastings (formerly) Hicksville in Hawkes Bay New Zealand. Being a British settlement there are a lot of place names and road names that are exactly the same.
We'll have to arrange a visit 😀
I like the flexibility of the standard 1U entry point top and bottom allowing the use of a standard brush plate for cable entry. Might have to think about Penn Elcom again in the future just for that.
Where's the earth strap for the door and cabinet though?
Don't forget the earthing and bonding when installing... Even the doors! 😉
Why bond the doors?
@@davidfaraday7963 BS EN 50310, also the door is generally the first thing anyone touches. High integrity earthing is also something that a lot of places insist on.
@@charlieecosta5592 I am not familiar with BS EN 50310 and am not prepared to pay £109 to find out what it says. Suffice it to say that in my experience doors are rarely fitted to rack cabinets and, when they are, they are usually glass.
Agreed its criminal that the BSI charges that money for 35 pages. It goes into the detail of configuration of earthing (like in data centres - star, ring, mesh, etc.) and makes reference to other standards... Glass is much easier! Another reason (as I understand) is to remove the build up of static away from any equipment.
@@charlieecosta5592 I am familiar with the need to segregate earth paths within equipment to minimise potential problems caused by volt drop across the impedance of a common earth path, and to keep the impedance of earth paths that carry signal currents as low as possible. However that is nothing to do with safety earthing.
You have regular Arctic fans installed, you should look at the Arctic CO (Continuous operation) fans, much better suited to run 24/7 365.
In the TV production world we use 70” tall racks with the 19” width. 1RU(rack unit) = 1.75” tall. Equipment makers would specify gear in how many RU tall or full or 1/2 rack width.
My town lads! When were you here? Could’ve shown you the best sights, eateries and brothels.
Maybe next time 🤦🏻♂️
When are you free? You can show me.
Surely everyone knew that 19" racks originated in telephony... ? 4ft 6inch was for telecomms originally... but they went for 19" for relays
What are those fancy pants you guys wear?... do you know if you can get them here in the US?
Work wear? You can buy them from DIY stores (in the UK), or work wear stores or retailers online. Checkout dickies.com
@@gazzat5
www.screwfix.com/c/safety-workwear/work-trousers/cat850376
Some have pockets on the knees for kneepads to be slotted in when working on your knees.
Or you can get these Cargo pants - a designer, trendy, brand based on workwear - for three times the price which would not last a week on a building site.
www.ubonlinestore.com/products/khaki-regular-fit-cargo-pants
@@johnburns4017 thank you sir
@@ericturnipseed8664
Those work pants are common in the UK.
To look the part they tend to all have them, and sometimes with a high-viz top.
www.toolstation.com/hi-vis-bomber-jacket/p42211?store=PD&mkwid=s_dc&pcrid=515847200297&pkw=&pmt=&gclid=CjwKCAjwoNuGBhA8EiwAFxomAwG01R6cJT9sWdd3x2tTyK4Gc7rS64IURXc-RQsQ6kBx0GHw7Yn3pxoCMxoQAvD_BwE&gclsrc=aw.ds
Strictly speaking what you are showing are cabinets, not racks. A rack is just two uprights, a cross piece at the top and a base. Traditionally they were made from cast iron and weigh a ton, these always had threaded holes for mounting equipment rather than cage nuts. Those used in telephone exchanges in the Strowger days were normally 4 ft 6 in wide, 19 inch was only used for transmission equipment and similar items.
I've had a 6 ft high 19 inch rack in the corner of my "man cave" for the last 35 years, having them in homes isn't new.
Very cool 😎
Thanks
You really don't want those threaded bars, the cage nuts are far better for compatibility.
indeed, threaded bars are not a feature to be proud off, Thankfully Penn do still make proper racks with cage nuts.
I’m an AV installer and really like pre threaded rails! What’s your reasoning behind preferring cage nuts out of interest? Guess it doesn’t matter too much if you accidentally strip the thread…
@@pahaywood1992 if you are mixing and matching a lot of units, that aren't as strict on spec pre threaded holes can be a pain, thread damage, if constantly swapping units is also a real issue, see also rail damage especially in mobile racks. It's amazing how often a little play in cage nuts will let you squeeze in a difficult unit.... And for really weird stuff you can cut the horizontal between 2 cage nuts and have an adjustable hole.
@@pahaywood1992 In addition to what Andrew said, I have some equipment (namely server rails but I've seen it frequently elsewhere) that requires the square gaps and doesn't screw in with screws, which would mean it's impossible to fit in a threaded rack.
I don't see the need for cage nuts to be that big of a deal, just get one of those removal and insertion tools and it's a breeze.
To each his own. In the pro audio and event production world, those caged nuts are generally considered a plague prone to failure.
Really nice video.
Thank you 👍👍👍🥳🥂🕺🏽
Where is the uninterruptible power supply? 😉
I hate these bloody racks don't no how many times we have altered installations to accommodate them then they fit a huge box on the wall with 1 bloody rack in it you instantly turn into Norman bates
Not a back stop it a clamp down :) guys do some stuff with @artofsmart . also need a UPS, rear cable entry has holes to mount brush rail. Big in CCTV too.