I really enjoyed watching this. My dad was a B-17 prop mechanic in WWII. I had no idea how complex the prop mechanisms were. It give me a new appreciation for what he did during the war.
@williamrizzo1285
2 жыл бұрын
So was my grandfather. Clarence, "Mac" McMahon.306th Bomber squadron.
@jaminova_1969
Жыл бұрын
My Uncle "Wild" Bill was a bombardier on a B-17. He made it home thanks to mechanics like your father!
@jeanquadvandamage9211
2 жыл бұрын
This is fascinating. And all of this was designed using slide rules and drafting boards. Thanks for sharing.
@humbertothebeliever2443
2 жыл бұрын
What I find more amazing are the minds that thought about all those parts fitting together and why they had to be made that way......It's just amazing.
@DogRedful
2 жыл бұрын
Even more amazing…it was done with slide rules and blue prints…none of that CAD stuff.
@humbertothebeliever2443
2 жыл бұрын
@@DogRedful ....I wonder if those parts were designed on top of previous designs or were they totally new.
@jfan4reva
2 жыл бұрын
And every part had an individual drawing made by a draftsman in addition to the drawings of the complete assembly and sub assemblies. There was a whole lot of wood, graphite, ink and paper behind all those metal parts.
@holdendavid9025
2 жыл бұрын
@@humbertothebeliever2443 that's exactly how equipment gets designed. It's based off previous designs and parts. It wasn't pulled out of thin air.
@humbertothebeliever2443
2 жыл бұрын
@@holdendavid9025 .....Got it.
@bennywilkes4240
2 жыл бұрын
Geez, no PPE equipment used. In the 70's we used tricochorloline (a.k.a. Trico) for degreasing C-130's. Trico is a halocarbon used since 1920 and classified as a cancer causing agent in 1981. Service Master was the replacement and useless. It left an oily surface and would strip fresh zinc chromate coatings. These earlier mechanics had ethics and talent. They were worried more about death caused by wartime. Great documents. Thanks.
@chemistryinstruments7156
2 жыл бұрын
No gloves. It went right into the skin
@commentatron
2 жыл бұрын
@@chemistryinstruments7156 Yep, fortunately the body chemistry maintained its delicate balance by the careful introduction of whiskey and Lucky Strikes.
@mohammedcohen
2 жыл бұрын
...I can dig it...at Sikorsky WPB (1990s) we used MEK to clean the surface underneath the special air hardening caulking that sealed the fuel tanks of the S-76 - when manufacturing was returned to the main plant in Stratford they didn't use MEK (for the same reason) and the customer complained of leakage in those same tanks - they were sent back to WPB for repair...and yes we used that same MEK but first we had to completely strip the tanks of the old sealant - a very nasty job - required the techs getting into those tank that still reeked of JP4 ( a real bitch of a job in the oppressive Florida summer weather in an non climate controlled open hangar - but we did the job - the company lost money because of 'climate/environmental politics' the work was done on the company dime - still Stratford wouldn't listen...
@bennywilkes4240
2 жыл бұрын
@@mohammedcohen Greetings friend. I am fully with you. Reminds me of a quote: “We the willing, led by the unknowing, are doing the impossible for the ungrateful. We have done so much, with so little, for so long, we are now qualified to do anything, with nothing.” ― Mother Teresa. You did your job right and the Flight Crew thanks you because they were safer because of you. The so-called management teams are clueless of correct procedures and should be hanged for endangering the Flight Crews safety. Keep safe brother.
@jhonsiders6077
2 жыл бұрын
My father worked on them during the war at Curtis Wright and in England at air fields he always said they used mineral sprits to clean parts and the really cruder up stuff they used gasoline and a scrub brush first outdoors of course weather permitting I have a A@P but have never used it got it in high school at emery in Miami I always looked at aviation as a hobby and not a career to my engineer fathers disdain too much government involved .
@olafzijnbuis
2 жыл бұрын
Great instruction video. The real thing! No stupid animations. No unnecessary fun. They explain the why of every action. Reminds me of a flying school in the Netherlands. The owner had many American instruction films from the airforce. All from the sixties. Great material. If the weather did not allow flying they showed a few.
@PeriscopeFilm
2 жыл бұрын
Glad you enjoyed it. Thanks for being a sub. 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.
@donbrown3599
2 жыл бұрын
Our Air Crews did a Great Job keeping our aircraft flying .
@DogRedful
2 жыл бұрын
The aircrews don’t do this sort of stuff…it’s done by the largely invisible ground maintenance crew. P.S. I’m retired USAF flight engineer.
@douglasharp2278
2 жыл бұрын
You guys in maintenance are simply incredible for the job you do to keep it all going.
@davyjones5890
2 жыл бұрын
This propulsion machining work is astounding. I was a machinist starting 2 days out of high school. During my time, I went from manual lathes and mills to full tilt CNC 4 axis machining centers, using computers to program a toolpath. I am in awe that the WW2 machinists could mass produce the gears, splines, and engines required just using technologically simple manual lathes and mills. One moments in-attention will scrap the part you may have spent days machining. This was truly the Greatest Generation. The ability to build better aircraft, fighters and bombers than Germany, primarily won WW2. Study the complexity of the Merlin engines, and you will understand what an accomplishment it was.
@enedenedubedene4811
2 жыл бұрын
Das ist Präzisionsarbeit vom Feinsten.👍👍👍😃😃😃😃😃😃😃 Viele Grüße aus Germany
@bitsnpieces11
2 жыл бұрын
These films were done by experts on the item and checked by other experts to give directions to people who had never seen it before. They would then be checked by many people trying to find fault with it. Also ANYONE in the field that found a problem with the directions OR another easier way to do it could send that in to be reviewed and added/changed, as needed, to make it better.
@PeriscopeFilm
2 жыл бұрын
Thanks for the comment and for being a sub. 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.
@scallen3841
2 жыл бұрын
I joined the military to be a aircraft mechanic , I wish I was alive back then to work on these aircraft
@georgegonzalez2476
Жыл бұрын
Well, maybe. But it sure seems rushed and vague. No torque values. No checklists. I expected better.
@douglasharp2278
2 жыл бұрын
Maintenance crews are some of the unsung heroes of all military branches during wartime or during peacetime.
@douglasharp2278
2 жыл бұрын
@Analog Human That is what I said. Maintenance personnel do their jobs for the most part in total obscurity which is probabely o.k. with them. Where would the war effort be without the maintenance crews?
@sumbeech1484
2 жыл бұрын
@@douglasharp2278 I think he's ragging on your spelling ability ! Something I see a lot of, but don't personally don't give a damn about ! We got what you were trying to say!
@boondocker7964
4 ай бұрын
@@sumbeech1484 Spelling police?
@craigpennington1251
2 жыл бұрын
Sure wish that these films were digitized and the audio cleared up-(non distorted). Very good history and instructional. A very nice & powerful spray cleaner. You can't get any better instruction that this.
@lifeindetale
2 жыл бұрын
@notfiveo I say it would
@christopherj5780
2 жыл бұрын
Spoiled? Not digitized original footage is the point!
@PeriscopeFilm
2 жыл бұрын
This film and accompanying audio was scanned on a $150,000 film scanner. It is presented more or less exactly as it would have been seen by maintenance staff in the field during WWII -- although some would argue it looks and sounds better than what they would have seen and heard. At Periscope Film, we don't believe is using additional digital gimmickry to "enhance" historic footage -- we don't colorize, and we don't motion blur. Of course, KZitem does its own things to our material in terms of compression!
@markgolden3983
2 жыл бұрын
All that hurtsNn.
@eddiekulp1241
2 жыл бұрын
Leave original, it's historic
@bingosunnoon9341
2 жыл бұрын
I remember watching this exact same movie in tech school.
@geirbalderson9697
2 жыл бұрын
Amazing piece of machinery. Same goes for the Maintenance crews.
@perrybucsdad
2 жыл бұрын
This is great. I love the one sergeants stripes that look to be painted on his coveralls. I also think it's funny when at 3:58 the one guy says "Packing ring sir" There is NO WAY a sergeant would ever allow an enlisted man to call him sir. That guy would be met with a sharp rebuke of "Don't call me sir, I work for a living!"
@Mudpuppyjunior
2 жыл бұрын
My pop did that [and every other B-17 crew chief task] for four years starting in the UK, moving to Tunisia and finally in Foggia Italy.
@smaviation
2 жыл бұрын
Doing such incredible Maintenace in the field, wonderful to appreciate.
@GaudiaCertaminisGaming
2 жыл бұрын
Imagine doing this job knowing that the lives of ten men depend on you not screwing up the smallest detail.
@billjones2271
2 жыл бұрын
Those round hubs on the front are prop pitch rotors. These motors are used today by radio amateurs for turning large antenna arrays and towers. i have four of them here.
@willflew2408
2 жыл бұрын
This’ll come in handy when I service my B-17 later
@rgp8038
2 жыл бұрын
Just like we did on DC-3s back in the day.
@dancahill8555
2 жыл бұрын
Didn't you have Hydromatics on your DC-3s? And these are? Curtiss Electrics?
@recnepsgnitnarb6530
2 жыл бұрын
I volunteered off and on at the Museum of Flight in Seattle helping with restoration and mechanicing. I was always amazed and enjoyed working on these engines.
@stratocaster1greg
2 жыл бұрын
The Greatest Generation in my humble opinion.
@elultimo102
2 жыл бұрын
I am a constantly amazed to see how complicated so-called "old tech" actually was, and awe stuck by the sophisticated engineering revealed in these films. I know that the techs of that time, would have little in the way of skills applicable to modern aircraft. But our techs would be just as ill-equipped to work on vintage planes. Vintage restorers have said how little that modern aircraft construction has in common with war birds, in spite of seeming just as complex in itself. The narrator referred to torque settings of the various components, but there was not a torque wrench to be seen, although there were a variety of specialized tools for the task at hand. Given the investment in the plane and the importance of the job being done properly, I'm surprised that they didn't have torque wrenches on site for precise settings.
@g6qwerty
2 жыл бұрын
yeah they shoulda put in a click sound when the right torque was hit.
@ditto1958
2 жыл бұрын
All those beautifully machined parts… all made without computers Wow
@bandit9902
6 ай бұрын
Great Video , worth watching every minute of it Now , Even more impressed with ths B 17 Incredible piece of machinery
@Oliverdobbins
2 жыл бұрын
Aw man! I’ve been installing B-17 propellers wrong all this time!
@lineshaftrestorations7903
Ай бұрын
A bit more involved than your ceiling fan. Films such as this should help keep the few warbirds flying. 😮😊
@stevewilliams688
2 жыл бұрын
Changed numerous props and engines like this on the T-28s in Corpus Christi, TX. Never knew the real name of the oil distributor shaft until now. I was always taught it was the “donkey dick.” :)
@elevenbucks5682
2 жыл бұрын
I was there in 76, handed out small parts for the T-28s. AIMD
@michaelkniazuk6418
2 жыл бұрын
That’s why they’re known as the greatest generation.
@daledangelo4421
2 жыл бұрын
Am I the only one that realized that “Mal” was the voice of Bugs Bunny…and 100’s of other cartoons characters!!!!
@SomervilleBob
2 жыл бұрын
Imagine doing this on a cold winter's night in England during wartime.
@lelandfranklin3487
2 жыл бұрын
Handy video...had trouble installing the prop last weekend on my '17.
@Daledavispratt
2 жыл бұрын
Do that a few hundred times and you're an expert.
@av8bvma513
2 жыл бұрын
That spray cleaner was probably Trichloroethylene!! Mmmmm! Tasty!
@robertrosselit8241
2 жыл бұрын
Imagine doing this in a sandy field on a windy day. Those .005 brass shims blowing around in the wind, having to stop and redo things over and over because sand keeps getting into it. What a pain.
@gcrauwels941
2 жыл бұрын
Learned quite a bit about the mechanism.
@cha-ka8671
2 жыл бұрын
Man, it’s just like putting on any variable pitch prop. Modern or otherwise. Shit hasn’t changed
@evanfinch4987
2 жыл бұрын
wow look at that snapring
@paulbrooks2024
2 жыл бұрын
Complicated as a automatic transmission, and no room for Era, man what some engineers
@kennethmaiforth6460
2 жыл бұрын
Cant imagine how the mechanics did it on a remote airfield in north Africa with all the heat and dust
@waynegilbert9504
2 жыл бұрын
Surprisingly complex design.
@johnalexander7490
2 жыл бұрын
Great Video, thank you for posting it! Has anyone noticed that none of them have gloves or any gear whatsoever while they're spraying solvent (or whatever) on all the parts and handling everything with their bare hands? OSHA would have a fit lol.
@karaDee2363
2 жыл бұрын
Great job fellas!💋
@frankjackson2439
2 жыл бұрын
Damn look at that brake Kleen applicator.
@kennethpaladino4948
2 жыл бұрын
Really cool vids! No OSHA! Bet that tarmac don’t last long with all that cleaner being sprayed all over it! LOL
@GeoHvl
2 жыл бұрын
I wonder if that solvent they are using is Carbon tetrachloride?
@mohammedcohen
2 жыл бұрын
...I'm surprised that torque wrenches were completely absent!!!
@aachucko
2 жыл бұрын
A little twisting. A little cutting. A little FOD in the engine.
@geoffreybudge3027
2 жыл бұрын
I wonder how long the crewman who used the cleaner barehanded lived after the. 40s
@user-37428
2 жыл бұрын
Wow
@marionmitchell261
2 жыл бұрын
Atta Boi Chuck!!!
@Musicradio77Network
Жыл бұрын
AVGN: Beee Seventeeeen Bawmer!!!
@TheBudman52
2 жыл бұрын
bet the solvent is pd680
@williamfriar6295
2 жыл бұрын
No JB Weld?
@muzzaball
2 жыл бұрын
I am surprised that so much went into what I thought was a simple task - silly me! Aviation, no such thing as simple.
@rikijett310
2 жыл бұрын
And a little piece of wire keeps it all together safely. 😲👍😂😂
@NatureRecycleFlorida
2 жыл бұрын
cool
@gastonbell108
4 ай бұрын
We think of WW2 mechanisms as relatively primitive. But just look at all that precision work for one propeller swap. At least a dozen fine, irreplaceable, mass-machined parts. There's four propellers on every bomber and one on every fighter. This is 1942. Your grandpappy has a high school education at best and has mostly read about machines. Get to it.
@lawrencet83
2 жыл бұрын
I don't know, but but the voice sound like Hugh Marlowe.
@steveanacorteswa3979
2 жыл бұрын
You have to think all those gears on the prop, if an engine dies you need to feather the prop (so it is sideways to the wind and not creating drag) if you can't do that asap the whole plane becomes not easy to fly, it's killed many 2 engine aircraft crews. Getting an engine shot out and having it dies, still needs a feather to get home.
@josephonesto5956
2 жыл бұрын
Wonder if that's carbon tetra-chloride they're spraying around......
@ancientheart2532
2 жыл бұрын
Say. Those boys are swell joes.
@joehead1294
2 жыл бұрын
Wow. Totally careless cutting with diagonal cutters @11:19 on the timeline. Wonder where that FOD went.
@patkcorcoran
2 жыл бұрын
Yuh' got that boys?
@robertknowles2699
2 жыл бұрын
Mr. Corcoran, Dad worced in Wright-Patterson and 20 years later had a rowboat. Two years back a Mr. Corcoran of Larchmere rd., Cleveland, exchanged his O'Day to me at reasonable price. Lot of intricate parts, including a floating center board. Are those feathering windmill vanes an application of these variable pitch change mechanism? Constant speed generator?
@eddiekulp1241
2 жыл бұрын
All this for a variable pitch prop
@jfan4reva
2 жыл бұрын
Which is a handy thing to have when the engine quits over Schweinfurt and you need to feather the prop....
@alphadog6970
2 жыл бұрын
Leaving those precision bearings in the dirt 😂😂😂 wow🙈🙈
@boblongdickder6178
2 жыл бұрын
It's all done with a slide rule.......... know what that is??? I sure do wish America was still like this......... everyone was happy to be a American !!!!!!
@johnbender5356
2 жыл бұрын
Just in time...I was just telling the wife that we needs new props on the old b-17
@ypaulbrown
2 жыл бұрын
that is funny
@burtbacarach5034
2 жыл бұрын
You're still flying a B17?We switched to the B36 ages ago!
@johnbender5356
2 жыл бұрын
@@burtbacarach5034ooooh look at mr. Big bucks...he can afford a b_36
@craigpennington1251
2 жыл бұрын
Make sure your bank book is packed.
@captainsergeant
2 жыл бұрын
Costco has good sales on them from time to time
@rogerb5615
2 жыл бұрын
I remember quite a few years ago, seeing a mechanic demonstrate the incredibly-precise balance of the props on these big radials: He placed a paper match book over one of the blades, and the prop ever so slowly turned until that blade was down, towards the earth. One or two ounces of imbalance on a prop blade that long, at those RPMs, could be fatal to the engine (and of course, the crew).
@PeriscopeFilm
2 жыл бұрын
Best comment of the day! Subscribe and consider becoming a channel member kzitem.info/news/bejne/sHp4vWemj5OZiHo
@CCAGENT008
2 жыл бұрын
Wow, what a complicated but yet sophisticated machine. Props (no pun intended) to all who made it's performance and operation possible.
@treimers95
2 жыл бұрын
Can you imagine doing that work in combat conditions in somewhere like North Africa with all the blowing dust
@jimheimerl1637
2 жыл бұрын
@@treimers95 Oh man, aircraft maintenance can be a pain even in the best conditions. The closest I ever came to that dust experience was when a bunch of us college fraternity brothers drove up to Astoria, OR to have a beach barbecue. It was kind of windy, but not terrible. As we were grilling the burgers, one of the guys put a piece of cheese on his just before it was done. Within seconds that cheese was completely covered in sand. The burgers were crunchy, and not in a good way, so we gave up and went to Burger King. So yeah, I know exactly how our troops felt in north Africa and other sandy places. I have a medal for my suffering around here somewhere...
@jaminova_1969
Жыл бұрын
@@jimheimerl1637 I once got caught in a sandstorm in AZ visiting the River with some friends and it stripped the paint off my classic car!
@jimheimerl1637
Жыл бұрын
@@jaminova_1969 Well, that's suboptimal! Then again, uh, you, uh, wanted to repaint it anyway, right?
@jimheimerl1637
Жыл бұрын
@@jaminova_1969 That is suboptimal! You, uh, were planning on repainting it anyway, right?
@commentatron
2 жыл бұрын
1:26 Solvent face bath, Herb? Coming right up!
@realvanman1
2 жыл бұрын
LOL! I hadn't seen that! Ouch!!
@alphadog6970
2 жыл бұрын
Nice catch ✌✌
@lebaillidessavoies3889
2 жыл бұрын
More complicated than i thought....
@charleshultquist9233
2 жыл бұрын
Amazingly complex. Imagine performing these jobs in harsh conditions during combat situations.
@hotasphalt7777
2 жыл бұрын
Worked on Hamilton Standards, Curtiss Electric and Aeroprops for 25 years. Love it!
@jimseviltwin1
2 жыл бұрын
That assembly has more rings than a Las Vegas wedding chapel ! Amazing engineering and machining.
@mikeedwards2621
2 жыл бұрын
Wow…Those mechanics were an incredibly awesome team back then. Also impressed with the behind the scenes of all the factory machinists and tradesmen who had no digital and CNC equipment and could hold those tight tolerances. Very cool…
@JK360noscope
2 жыл бұрын
They actually had to work back then!
@DogRedful
2 жыл бұрын
There’s still airmen changing props on C-130s today.
@scallen3841
2 жыл бұрын
All designed with slide rules , pencil and paper
@Snaproll47518
2 жыл бұрын
I changed props a the Lockheed Electra L-188 a few times as a young airline mechanic in the early-1970s. The most difficult part was freeing the old prop from its aft cone as it would hang up. Using a prop blade like a lever two mechanics would rock the prop fore and aft until it freed. It was quite a physical undertaking. When hanging the new prop, the hold down nut was torqued to 2000 ft/lbs using a torque multiplier. Jets are easier.😉
@jamesb.9155
2 жыл бұрын
I'm sure glad I found this film before I fitted all 4 of my propellers!
@randyosgood4729
2 жыл бұрын
....and I thought it would be just a few nuts and bolts and off you go.
@stevenlangdon-griffiths293
2 жыл бұрын
I’m very impressed with this film. The man hours to design and build the intricate parts, then put them all together to win a war against fascism. A great video, thanks for posting.
@andyvan5692
2 жыл бұрын
one thing he forgets, is that the oil on the nut also alows for a friction free rotation, so the torque applied by a torque wrench later is ACCURATE, not the resistance of the threads, but the squeeze on the assembly, but also this oil aids in removal next time, preventing rust on the parts as they are running.
@garethmayfield4014
2 жыл бұрын
what torque wrench? just a big bar. days when engineers worked on feel fella
@dougankrum3328
2 жыл бұрын
@@garethmayfield4014 Every prop assembled was done by that same guy....he was very busy....his weight was certified !
@seanjayson9513
2 жыл бұрын
Ah, the "before times", when we just sprayed nasty solvents around in the open with no containment or PPE.
@gary6449
2 жыл бұрын
Prob'ly was *carbon tetrachloride* in the sprayer. A great solvent, but not so good for humans..
@HootOwl513
2 жыл бұрын
@@gary6449 Or MEK or avgas.
@jfan4reva
2 жыл бұрын
That's why after the war, so many military installations got classified as clean up sites. Even pre-EPA regulations were waived on military bases. If you didn't turn purple and drop dead within 48 hours, you were considered to be OK. (No, really! There were rocket propellants they developed after the war that would do that!)
@HootOwl513
2 жыл бұрын
In '44, [Hughes] Air Force Plant # 44 [now Raytheon] at Tucson International Airport was tasked with removing the Olive Drab over Grey camouflage paint from B-24 bombers. As the USAAF had air superiority, the natural aluminum finish had better visibility, less weight from paint, and much lower drag. Unfortunately, they used a high pressure spray of trichloroethylene [TCE] to strip the paint. This percolated down to contaminate the ground water. Tucson city water has had problem with TCE in later years.
@dorianleclair7390
2 жыл бұрын
I don't know why but these are very intresting to watch
@mikemcguire1160
2 жыл бұрын
Now imagine doing this under the tropical sun in a place like New Guinea while trying to shake off the effects of your last malaria attack. Quite likely some of the parts are salvaged from a wreck.
@yakbreeder
2 жыл бұрын
I've been meaning to replace the props on my B-17 but didn't know how. Thank you for providing this great tutorial.
@lagumlemoni331
2 жыл бұрын
I hope you have a B-17
@yakbreeder
2 жыл бұрын
@@lagumlemoni331 got 3 of them. 😎
@lagumlemoni331
2 жыл бұрын
@@yakbreeder can I borrow one for no particular reason 👁👃👁
@yakbreeder
2 жыл бұрын
@@lagumlemoni331 ya got a hot date Saturday night?
@merlin51h84
2 жыл бұрын
Fascinating video. Imagine doing that job during the war in the English winter!
@paoloviti6156
2 жыл бұрын
Now I know how to install a propeller assembly! Seriously I'm impressed with the quality and precision need to assembly the parts. I love those documentaries and it is always a pleasure for me to watch, thanks for sharing this very interesting video. Honestly I wouldn't mind having a brand new B-17 in my hangar. Lol...
@bBersZ
2 жыл бұрын
Back then a properly calibrated torque wrench was a 180lbs mech hanging from a breaker bar. But, they got the job done.
@JoeL-re1dc
2 жыл бұрын
Don't forget the 4 hammer taps........
@cmans79tr7
2 жыл бұрын
And wait until the mech said "click".
@ohgary
2 жыл бұрын
I wonder if the cleaning solvent was carbon tetrachloride? We were still using it in 1967. It’s banned now…
@spacepope-1
2 жыл бұрын
I was wondering what it was too.
@johnt.4947
2 жыл бұрын
I was using MEK in the '70s like it was a common degreaser/cleaner.
@davef.2811
2 жыл бұрын
So much I've forgotten... Boy, the DERM/EPA people would surely have a field day with this stuff nowadays. What would they do, shut down, or fine the Air Corps out of business?
@andystevenson5067
2 жыл бұрын
Okay great. I now know how to install a prop on a 1940's bomber. JUST in case....
@coriscotupi
2 жыл бұрын
Think of al the planning, engineering and machining that went into just this part of the airplane. Imagine the rest. It's almost incredible that this is from some 80 years ago.
@charletonzimmerman4205
2 жыл бұрын
Wow, came along way, in 34 years, since -"RUBBER BANDS", worked the "PROPS".
@warmsteamingpile
2 жыл бұрын
My dad was an aircraft mechanic in WWII in Europe. Pretty sure he knew how to do this.
@C-130-Hercules
2 жыл бұрын
I’m ready! Let’s put another one on… 🍺
@ZenWithKen
2 жыл бұрын
A little varsol in the eyes at 1:27, lol. Different times indeed.
@scootergeorge9576
2 жыл бұрын
Not a torque wrench to be seen. As I recall from my P2V-7 days, we used a big "Sweeny Wrench" with 10-1 gear reduction to torque down the prop.
@sdhlkfhalkjgd
2 жыл бұрын
It seems as though they referenced the torque value in a unit of measure specific to the size fellas they had. "Pre-torque to Jimmy (100 lb.) hanging off the extension bar. Final torque to Skip (180 lb.) hanging from the bar while Roger gives it a good old wallop with the brass mallet."
@davidgold5961
2 жыл бұрын
The torque is estimated using the length of the bar and the amount of strength an average man can pull. You’ll notice at the 185 foot pound reference, he’s pretty much hanging off of a 4 foot bar. This technique was developed for two reasons: torque wrenches were in short supply during the war and, for such large assemblies there is a somewhat wide range of allowable torque values. But if you do it right with a 4 foot bar, you’re very very close.
@scootergeorge9576
2 жыл бұрын
@@davidgold5961 - 100 pounds applied to a 4 foot bar equals 400 foot pounds. Looked like the mech was hanging on the bar. If he was 185, that would apply 740 foot pounds torque. That's dang near double, 400.
@ypaulbrown
2 жыл бұрын
Hamilton Standard buddy.....
@suzuki1000ish
2 жыл бұрын
These older training films have far better narration and camera direction than today's training videos.
@sdingeswho
2 жыл бұрын
Had to see this, because have seen the props apart for this kind of maintenance on Sentimental Journey (B-17G) at CAF Airbase Arizona, but didn’t actually see the assembly procedure. Great historical film! Makes you wonder how the mechanics could do this under combat conditions! 😮🇺🇸😁
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