PRODUCTION OF SPERRY GYRO-COMPASSES BY DODGE BROTHERS IN WWII 58834

[@cynthiahite2129]

Who would dislike any of these old films? That is just so strange to see a "thumbs down" on any of these old documentary screen liners.

[@connormason7907]

KZbin took dislikes away on everything now

[@WillN2Go1]

4:31 Dodge Main, Hamtramck Michigan. (1910-1980) My grandmother worked there for over 30 years. Working there during the war she said "I made tank parts." A terrific film. Women working alongside men at the same jobs. That was always my impression. Detroit really was the engineering capital of the world.

[@glennarrant3743]

I worked on the Sperry (Now Honeywell) when I was in the Coast Guard. The Mk 14 was an excellent piece of hardware. I later worked on the satellites that replaced gyro compasses

[@gormauslander]

Thank you very much for your service!

[@davem5333]

The production during WWII of ships, planes was mindboggling. Even more so was the incredible amount of sophisticated technology that was installed. I never had any idea of these devices or how complex they were.

[@ajjackson1526]

What's mind-boggling to me is how far they advanced in technology in just 5 years.

[@Walruswaffle]

The B-29 gun targeting system blew my mind when I learned of it. Anyone interested in WW II tech needs to look it up in detail.

[@robertscott8226]

People in those days did a lot of thinking!

[@moitoi4064]

Thanks for posting the clip, I worked for Sperry. The MK XIV gyrocompass presented here is produced in the 50’s, when I joined the company in 1979 there were still a few onboard ships, they were gradually replaced by the MK XX which is smaller in size, as years go by the gyros are getting smaller and smaller, Sperry produced the MK 37 and SR-120 in the 80’s, they also produce gyrocompasses for fishing boats like the SR-50. The smaller the master compass is, the faster the rotor has to spin which require frequent replacement of the rotor bearings, also balancing has to be accomplished every year during maintenance overhaul by a qualified technician. It takes 4 hours for the compass to stabilize after its energized, once it’s settled the accuracy is less than 1degree variable error, if more than 2 degree error service has to be performed at the next port of call, most probable cause is vertical ball bearings to be replaced. There is no liquid in Sperry gyrocompasses, other companies like Anschutz or C Plath use liquid but not Sperry, the latest models however have a transparent grease in their sensitive element. Do you know that the sensitive element that contains the rotor is stationary in space and that the ship is turning around it? And oh BTW I never seen the master compass installed below deck at the ship’s center of gravity, theoretically it’s the perfect spot I agree but practically they are installed on the bridge or in a room next to the bridge.

[@moitoi4064]

@@danjarvis6980 I always recommend the Captain to leave the gyro running all the time even if the ship stays a long time in port, the reason being is that when you restart a gyrocompass there's a chance that the rotor would not start, it takes a lot of force to start the rotation of the rotor, if the rotor bearings are locked because of grease gumming up chances are you are going to depart without the gyrocompass or the port authorities will not allow you to depart until the gyro is fixed.

[@deltajohnny]

Thank you very much for the very detailed post! 👏👏👏👍👍👍

[@mikedevaney9901]

During WW2, Lionel model train co. made compasses for ships and tugboat. I'm lucky enough to own one.

[@tom7601]

During WWII my dad, who was too old to fly combat missions was an Army Air Corps/Army Air Forces ferry pilot. He ferried mostly B-17s to England. He depended on the Sperry to get his flights safely to their new home. I seem to remember they took off from the Midwest and flew to Newfoundland to take care of any squawks and top up the fuel. From there they flew to Greenland (Gander?). They spent the night there and the ground crew did required service. Then it was over the North Sea to England. The B-17s flew with a crew of two, pilot and copilot/navigator, and strict radio silence.

[@Paddington60]

Greenland to England is flying over the North Atlantic, the North Sea is between Great Britain (England Scotland) and Europe (Belgium, Holland, Germany, and Denmark) Brave men and women all, those who flew the ferry flights.

[@shawnfoxfirth9684]

Gander is in Newfoundland .

[@burntorangeak]

Such pride in manufacture, And yet Chrysler drove itself face first into the ground less than forty years later.

[@colvinator1611]

That is an excellent account of the manufactur of a vital piece of equipment. Thanks a lot, Colin UK 🇬🇧

[@ChatGPT1111]

This film shows the attention to detail, intense workmanship, quality precision and the pride of manufacturing without people being distracted by constant government and corporate PC propaganda that we now witness daily.

[@jlwilliams]

This film was government propaganda. Those workers were motivated to work with pride and quality by government propaganda. It was true, but it was still propaganda. Today's workers get so distracted by ginned-up conspiracy theories, fake ideologies, and hate-mongering that they don't believe their own government even when it's telling them the truth.

[@phantomphlyer4417]

Amazing. This is why American became a super power and a light upon the hill. I hope we can continue this for our future generations

[@ronaldjohnson1474]

What the bean counters did to Dodge and others should be considered criminal.

[@Rockit442]

Tears to my eyes at 2:12 I can only imagine. What did he just witness? I wonder if he made it home...

[@duradim1]

He is cold.

[@davidclark3304]

As of 9-9-21 one of these is for sale on Ebay for $990. It's located in Tacoma WA. I don't know how long its been for sale. This is a very interesting unit and I was very tempted, but its large and heavy, and for me, alas, too expensive.

[@Robert--cm2nf]

It is still amazing how fast the US government speeded up the war needs , even for today standards it is still a wonder

[@JuanAdam12]

Robert 30-06 I still don't understand how this was possible.

[@loftalofta8423]

Yes incredible...a whole nation put to work on the same goal...impressive

[@allandavis8201]

Adam E. As they say “needs must, when the devil drives” or in other words when the need arose the nations of the allies rose up to the challenge, amazing what can be done when the need was and is (pandemic 2020) so great that if the challenge wasn’t/isn’t met we are going to be in major manure pile.

[@gormauslander]

Considering how long anything takes to get done because of legislature and lobbying, it is nothing short of a miracle

[@martyzielinski1442]

@@gormauslander -back then, rules were “bent” when necessary. I’m sure it was often necessary.....

[@TerryPullen]

Amazing machine.

[@BK-uf6qr]

Such a dynamic time period when man stepped forward from the old world to a new modern world. This time period has an allure of people with a singular purpose, united for a common purpose. A true battle between good and evil. Socially, improvements were slower than hard tech, however. If there is one aspect I don’t pine for is the vestige of old prejudices. Yet, that yoke was starting to be lifted.

[@mahdyfouad4822]

15:02 that is quality control

[@InflatablePlane]

Looks like this was all done at Dodge Main in Hamtramck. Sad that whole plant and most of the neighborhood surrounding it is gone now. All leveled to build the GM Poletown assembly plant.

[@shawnfoxfirth9684]

Delivered in a third of the estimated time ...Today it would take three times the estimated time and way over budget .

[@gormauslander]

Looking at you, lockheed

[@shawnfoxfirth9684]

Well Titan I'll toss ya a shit for that .. . Thanks lad .

[@gangisspawn1]

Instaportal is a phishing scam.

[@gangisspawn1]

I always take my Sperry gyrocompass when I go hiking so I don't get lost.

[@discerningmind]

All of this is remarkably wonderful. What stands out to me is how great Chrysler was, and then after years of mismanagement how insignificant it is today. It's pitiful that can happen to a great American company.

[@ldv1452]

Remarkable!

[@PeriscopeFilm]

Love our channel? Help us save and post more orphaned films! Support us on Patreon: www.patreon.com/PeriscopeFilm Even a really tiny contribution can make a difference.

[@20alphabet]

Saw a few of these back in the day.

[@6h471]

Dodge was a division of Chrysler corp, but the Dodge brothers had nothing to do with it, as they both died a few months apart in 1920.

4:15 Zebulon Pike Hull 72, launched Feb. 1942, scrapped 1961. Next to her The Henry Knox Hull 74, Launched Feb. 1942 Torpedoed and lost off the Maldives 1943.

[@billjames1953]

The Texas Clipper, TAMUG training ship had one of those Gyro. It was big.

[@peglegnoid6139]

Perfect dynamic balance ?

[@theplanetruth]

2:55- What is true north, and how is it determined?

[@philup4947]

Piss off you flat earth tool

[@Bunny99s]

Well, just bother Google. True north is the direction towards geographic north: en.wikipedia.org/wiki/True_north The geographic north pole is the point where the axis of rotation leaves the earth surface on the northern hemisphere en.wikipedia.org/wiki/North_Pole A gyro compass will orient itself towards geographic north due to the precession of the rotating body which is introduced due to the rotation of the earth. en.wikipedia.org/wiki/Gyrocompass Apart from true north we also have magnetic north. However the magnetic north pole is slightly off from the geographic north pole. Also the magnetic declination does vary heavily depending where you are on earth which makes magnetic compasses quite unreliable without a proper declination map. en.wikipedia.org/wiki/Magnetic_declination

[@FrankGutowski-ls8jt]

I wonder why, when using the conventional magnetic compass, the imposed, protective magnetic field around the ship couldn’t be switched off just long enough to get a reading, then turned right back on. I’d think that doing so would minimally expose the ship to high risk.

[@theplanetruth]

In the show notes, it says a gyrocompass detects the earths rotation. Where is this demonstrated, or explained?

[@philup4947]

Piss off you flat earth tool

[@philtorres2975]

If you don't understand that, telling you to put one foot in front of the other and your ass will follow would probably be extremely difficult for you to understand. Worked with the Sperry mk 19 compass while in the US Navy.

[@normkraack]

It was the genius engineering that produced Inertial Navigation Systems. They used accelerometers to sense the Earth's rotation. No movement in the X-axis indicated true north. NOT magnetic north.

[@peterhoebarth4234]

@@philup4947 stupid nasa - troll. Lol

[@tyroniousyrownshoolacez2347]

Guaranteed if it was made by the Chrysler group it was the best made product ever!.................for 3months.

[@randydewees7338]

The part count was 10,000? I find that unbelievable, unless it includes all of the individual identical balls for the bearings.

[@JuanAdam12]

Curious to know if anyone here knows whether this equipment was of the quality and reliability touted in this film.

[@Paddington60]

When I went to sea it was with Mark XX (20) I think, and they are easily recognisable compared to this Mark XIV. The XX was that accurate I would say so I would not be surprised if the film is quite correct. I am sure the compass was more accurate than the bearings the user could take. The binnacle seems to have changed more than the gyro sphere. I only saw one ship where the master gyro was placed as near to the centre of the ship as possible. Most the master was on the bridge, so the bigger binnacle may have been to offer more efficient damping. Then again we did not roll or pitch a tremendous amount, even in a Tropical Revolving Storm.

[@JuanAdam12]

Thank you for that information.

[@flipflopsguy8868]

WHO WON THE WAR ON ALL FRONTS AT THE SAME TIME 🤨... 🇺🇲

[@mottthehoople693]

such wonderful devices designed by men with pencils and slide rules now either on the bottom of the sea or scrapped by unskilled me with no idea of what they were destroying bet none of these exist now

[@samsonn25]

Government thought it would take 2 years??

[@samiam5557]

MOPAR helped Uncle Sam kick Hitler & Tojo in the ass! 🤣🤗😋

[@robertporch8895]

Made when, Made in USA, meant it was the very best in the World.

[@TlD-dg6ug]

Having made parts for the marines, as well as for aerospace.... Milotary standards are rarely followed these days by alot of corporations. They then lie about the testing and results, and those shitty parts go into service. Thats why I left the Aero/Defense machinist game.

[@flipflopsguy8868]

IF IT COULDN'T BE DONE, WE DID IT ! 🇺🇲 CONCEIVED IN AMERICA, MADE IN CHINA. 😷

[@Haruki_Aikawa]

Made by Dodge... So they crapped out at 30k miles and the dealerships told them the motor wasn’t properly broken in...

[@misters2837]

Too bad Dodge took a huge dump in quality in the 70's almost went bankrupt, and now has changed hands in last 30 years like a hot potato.

[@williamwilson3080]

I didn't appreciate the advertisements from our screeching, squealing, bastard of a president that we unfortunately have. Who, incidentally was a notorious " coward and yellow bellied draft dodger" and never saw a day of military action or true heroism to this nation in his entire life.

[@wonniewarrior]

And we have another brain dead demonrat supporter screeching about things political in a old documentary about war. I swear you demonrats will make political tantrums at a kindergarten bake sale blaming 'orange man bad' because the little kiddies and their parents didn't make ethnic cookies and were proud to wear American flags.

[@burntorangeak]

"must be accurate to within 3/10ths of one degree at each of its five positions -" I should've known such witchcraft would be tested on a pentagram.