Comments by "Tony Wilson" (@tonywilson4713) on "The HIDDEN Screws of PRECISION" video.

@garethfuller2700 An awful lot of stuff in the British Commonwealth (Australia, Canada, New Zealand,......) Even though we've had metric for decades and that almost anything new is metric there are still a lot of older machines and copies of older machines that have BSW and BSF threads. Most notably you find these Whitworth threads around pipes BSP. If you do anything around pneumatics or hydraulics you come across it all the time. Its one of those obscurities that has survived despite all other attempts. You'd also be very surprised how many lathes come with their main lead screw as a British Imperial rather than metric. Its actually very easy to make the both metric and Imperial threads so long as your lathe has a 127tooth gear. I eventually got my pilots license and flying is a bizarre mix of Imperial and Metric systems. The visual range is given in kilometers, but distance over ground is still in nautical miles. Altitude is still done in feet, but the pressure for setting your altimeter is in millibars (metric) or mm.Hg as in millimeters of Mercury (again metric) Fuel capacity is usually (but not always) measured in gallons and fuel weight is usually measured in (but not always) kilograms. That one depends on the plane and where and when it was certified. All pilots have to be very careful with the conversions or you get the Gimli Glider scenario.
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@MattH-wg7ou I'm Australian but I went to college in the states where I first learned to fly gliders while doing my degree in aerospace. Finally after many years I got round to doing my powered license. Got my aerobatics and started competing. It all got cut off a couple of years ago after I picked up a very nasty virus. Hoping to get back to some before too long. Down here all weather information services are in kilometers. Fuel is delivered in liters. Temperature is in Celsius. Weight is in kilograms. But any aircraft built in the US has manuals with gallons and Fahrenheit and pounds. We have to be especially careful with gallons because there's 2 - US (3.8l) and Imperial (4.5l). So you do need to be very careful with fuel.
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@its.emma.jacobs Good point on standards. I love this channel for how well its researched and how well it presents engineering. His vid on Jacques de Vaucanson's lathe was brilliant.
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@MattH-wg7ou Thought I'd ask. Where I got my aerobatics ticket the school owner was ex-USN and flew both F4s and F14s. I asked on day he really surprised my in how much he liked the F4 and disliked the F14. But then Ward Carroll who has a YT channel points out that the F14 was a handful at low speed. What did you fly where there's an interesting comparison? If you can't no prob. As an engineer I like to understand what people do and don't like even if its in areas I'll never work. It all adds up when you are a solution provider.
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@MattH-wg7ou Yeah my frat brother is a senior instructor with one of the major American airlines on 737s. He was part of a team sent to Boeing to get the Max-8 sorted out. He gave me no details but did say "they broke the Boeing system." That actually scares me because I understand what he means by "system." That includes all the procedures, tests, methodologies and engineering ideologies that they use to go from words and blank sheet of paper through to you and me at 35,000ft. Basically a library full of knowledge and experience AND they broke it. I'm well aware of how little certain pilots fly. Way back in the late 80s there was a Concorde pilot who became the first pilot ever to record 10,000 hours as pilot in command at supersonic speed. That came up in a discussion at the glider club one day where a couple of our tow pilots we ex-airline with over 10,000hrs. When I quizzed why the big deal one of them slapped back at me asking how stupid I was because he knew I was doing aerospace. I'd forgotten just how little planes can normally fly at supersonic, because of how fast it drains the tanks. Plus it also thermally stresses planes. You might know better than me, but most air force pilots have less than a single hour at supersonic speed and most never record more than 2 hours in their entire career because its all little short bursts. For what was known at the time that 1 Concorde pilot had more hours at supersonic than the entire USAF history that was known. The SR71 hours weren't known at that time and could/would have changed that assessment. Concorde truly was an amazing piece of technology.
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@richardkell4888 If you don't have the right thread gauges working out what thread you actually have can be a mongrel especially if its worn and even worse if its an odd pitch. I'm an engineer and never underestimate people to do something odd for a 1 off part and NOT document what they did.
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@MattH-wg7ou Same to you. There's a Matt H who flies in Australia, did fly for the RAAF and these days likes High-G, low altitude flying between pylons?
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@MattH-wg7ou I have about 350 hours. How much do you have? Don't worry about the answer. One of my Frat brothers who did his back in college as over 22,000. I hadn't chatted with him for years. It was humbling when he told me what he'd been up to, but he was super encouraging to keep going.
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@MattH-wg7ou absolutely and totally understandable Have you seen Ward Carroll's YT channel? He's an ex F14 RIO.
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@MattH-wg7ou What makes it a great channel is that it sticks to its area of expertise. So many channels get side tracked in stuff they just shouldn't. The other great aviation channel is Blancholorio with Juan Brown.
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@MattH-wg7ou What he doesn't do which should be a lesson to ALL JOURNALISTS and public commentators is NOT embellish on known facts. Any opinions he gives he's clear about that they are opinions. As far as I'm concerned people like Juan are real journalists. He presents the known facts and explains what he can about them. He doesn't make up crap or try for any grand standing attention seeking nonsense.
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@Kineth1 I'd forgotten the CF bomber. Love that comment form the other pilot to "get back in it"
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@mescko I once heard Mario Andretti (I think) describe Colin Chapman's ideology of race cars. If a race car is built right it falls apart as it crosses the line. If the car crosses the line and can do another lap its too heavy and needs to be lightened. If it breaks and fails to finish only then can you add weight.
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@EamonnG76 Year I know that. Odd thing on my college transcript. Navigation 101. I needed some extra time my last semester and friends had introduced to me sailing and I found this ROTC course. So with bunch of future navy officers I did classical navigation right back to star fixes with a sextant. It was one of the best classes I ever had. I also have a pilots license and airspeed is still in knots too.
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@soundmapper I still see those older threads in air fittings like BSP threads. You also see Whitworth threads on things like farm machinery, older trucks and those sorts of older machines that never seem to wear out in factories (like power presses).
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@MattH-wg7ou I really notice it in things I understand - engineering & technology. That makes me wonder about so much else we hear and can't challenge because its in topics we don't know or have no experience in. I'm Australian and Rupert Murdoch's crime of crimes was pushing and promoting "opinions as fact."
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@peterforden5917 These days the favored small books with all that stuff are the black books.
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@mescko There's one I hadn't heard of or maybe just not noticed. Thanks. I wish this guy would do more vids they are so damn informative. There's so much of this stuff we are close to losing. Its one thing YouTube is getting right. Just recently Keith Rucker at Vintage Machinery did a "partial screw thread" for a vice screw. I'd never heard of anyone doing that let alone seen it done.
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@mescko Unless you get really lucky almost NO supplier would have any idea what you are talking about. I vaguely remember a joke about Lotus using 7mm bolts to save weight over 8mm bolts and how its still a problem for people owning older cars.
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@dicksargent3582 Interesting. In what ways do they differ? The Russians for a while had an interesting philosophy they had 1 gear box. The had the same gearbox in their trucks their tanks and anything else that needed a gear box. Their view was they could keep their tanks rolling so long as there was a truck nearby to steal parts from. At times other militaries have done similar.
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