Broken Big Crankshaft // Mechanic Accepts Challenge On Small Lathe Machine And Repair Crankshaft

[@michaelwittmann2644]

This is captivating to watch, and the fearless machinist is a Grade 1 optimist in believing his repair will last any significant time, and without damaging other engine components.

[@ac9081]

Excellent job, after two weeks the Crankshaft will be back in two pieces 🤣🤣🤣.

[@paul4124]

One week.

[@0e32]

@@paul4124 1 h....

[@johnbrown-rm8kc]

don't be so Negative !!!!

[@Wes-x9p]

My bet is it falls off the truck on the way back from the "machine shop" and breaks in half again.

[@ac9081]

@@johnbrown-rm8kc sorry about that, how about three weeks 👍

[@tonyzanotto1691]

I sure do miss the throwing the finished product in the dirt at the end . Just because you have concrete doesn't mean you should break tradition .

[@martinjjnoagenda5536]

As an engineer, this makes me cringe all the way from the moment they dropped it from that truck. It will destroy all engine bearings, piston(s) and probably break again pretty soon also.

[@andrewlayton9760]

I am sure the cylindricity tolerance is now +/- WOW. How long will that system last under a rotating beam scenario?

[@24681359David]

@@andrewlayton9760 If it rotates slow enough it may work for a long time. 50-100 rpm it wouldn't know the difference. Anything higher than that, I wouldn't want to be anywhere near it!

[@ColCurtis]

I like how he polishes that main bearing journal with the angle grinder

[@fredzephire4071]

🤣🤣🤣🤣🤣

[@andrewlayton9760]

It looked like a cut off wheel (whiz wheel) to me rather than a grinder.

[@ColCurtis]

@andrewlayton9760 the angle grinder is the tool that spins the grinding wheel or cutoff wheel. If he's using a cut off wheel for grinding that's even better lol.

[@Billyclark51]

Standard way to bodge a broken shaft, 100% gonna snap if used for any length of time though! This guys skills leave a lot to be desired, and a decent machinist would know it’s a waste of his time!

[@clementgoetke2385]

how can you say that not knowing what its off of ? its definitely not off a high speed machine

[@Billyclark51]

@@clementgoetke2385 Because I know what I'm talking about! Also, you have to ask yourself why it snapped in the first place.

[@clementgoetke2385]

@@Billyclark51 whatever you say

[@an04ker]

@@Billyclark51sound like a right prick 😂

[@cuttersgoose]

It might hold, depending on the app… the break is clean, might have been a defective in the metal alloy, certainly not USA steel. Most likely Russian or Chinese

[@0e32]

Brilliant unloading from the truck.. 🙂

[@lliambunter]

I was thinking that , imagine doing that here (UK )you'd be sacked on the spot

[@0e32]

@@lliambunter If I pay extra..do you think I can get a gentle and proper unloading then?

[@lliambunter]

@@0e32 I reckon Tommy , it is Tommy isn't it Barry . how much are you prepared to tip up Gregory

[@Wes-x9p]

Not to mention driving around with the tailgate down and nothing secured.

[@lliambunter]

@@Wes-x9p laughable isn't it

[@kk6aw]

I just have to admire the tender loving care given to the broke parts

[@Andy-x3e4z]

As an Engineer I’m sorry but this shaft won’t last long despite it’s appeared.Due to the molecular structure of the metal and the stress this piece will be under it will snap in no time.Why do you think the shaft was originally one long piece of steel.

[@pst3615]

Smashing his bearings with the big hammer and then frying them with the welder, a job well done.

[@rupe53]

funny thing is, that machine has probably been there for 30 years and is still working ok after being somewhere else for the first 50 years.

[@jesstill7833]

Rough and ready Work shop ,,the gear they are using must be 100 years old my self I couldn’t use them as I fear they might injure them self Fark me I seen it all ,,,The tender care throwing it off the truck on concrete I’m done 😎

[@raydicicco8127]

That Alvin and the Chipmunk Audio Language Is What I'm Talkin About BROs , Love It Could Listen For Hours And Learn 😂STUFF ...

[@oldandintheway9805]

One of the first thing you learn in welding class is that you don't have to just protect your eyes from the lite (radiation), you must protect All of your exposed skin areas. An American dies from malignant melanoma every hour!. Exposing skin to that radiation dramatically increases your chances of being one of those people. And I love the steel toed sandals. Drop something that heavy on your toes and watch the fun!

[@davidmitchell7183]

The second thing would be to not to make beads 1 inch wide. Use 2 or 3 passes.

[@frankkelsey]

Total B/S!! You can clearly see that the crank was not broken but cut on both sides then snaped in two. This is a B/S video as usual.

[@oldandintheway9805]

I wondered if I was the only one that noticed that.

[@sidneybowerman558]

@@oldandintheway9805 Hopefully the next step was to melt it down and use the metal for something else.

[@denjhill]

Perfectly balanced.

[@colinmote846]

Always amazing that no lubricant is used for cutting in these machine shops !

[@KuriakosePolayil]

Excellent Brilliant beautiful video congratulations ❤️

[@rupe53]

Would love to see how he took the bend out of that shaft (almost a half inch?) after the first tack welds. I bet it was a BIG hammer!

[@mikethompson7290]

Got to give it those guys they have the best "EYECROMETERS" ever no need for any measuring devices. Do you suppose the horrible finish on that pin is on purpose so it wedges into the hole and stays put? Don't forget the GOB welding, and the awesome threads, goodness what a pile of crap. look at how much run out that unit has. excellent welds on a bearing surface, smooth as sand paper, If that shaft lives a week it will be a machining miracle. Perfectly balanced I am sure. I wonder what it is for?

[@lordieshepherd]

So right! This now has the tensile strength of a hollow bar. It will fail again.

[@fredzephire4071]

It's probably a crank from a 1 cyl motor used to drive a water pump for irrigation.

[@tonyzanotto1691]

Click bait .

[@rajuthawani6088]

You really have to have good Knowledge I have all the respect for heard working ppl, How much its cost fixing this ?? And if we were to buy new ones love to know

[@saiello2061]

As an engineer who's done some lathing in my time, I'm finding this almost unbearable to watch.... 😬

[@Rob2]

This is Cutting Edge Engineering Pakistan, the Pakistani branch of CEE Australia!

[@mmkuyt]

that lathe was pushed to its outer limit. even the operator stayed far away from it. i myself would have fled the room.

[@oldandintheway9805]

The counter balance weight was just tack welded. My God, what would have happened if they would have let loose!

[@sidneybowerman558]

I wonder why we don't see that happening in the UK. Giving the machined bearing journals the good news with the offset grinder. Perhaps it will help the balance of the whole shaft.

[@AndyL940]

Why would you only thread 1/2 of it 😂😂😂😂😂😂 pointless

[@SusanAmberBruce]

The way that man uses the lathe is like someone might use a knife and fork, it's like second nature.

[@tonyzanotto1691]

I see a long and glorious history as a third world country .

[@padraiggluck2980]

کٹنگ ایج انجینئرنگ PK

[@darrellshuman7751]

That would drive Curtis from CEE crazy.

[@padraiggluck2980]

@@darrellshuman7751 If he sees it I hope he doesn’t take it the wrong way. 🙂

[@Wes-x9p]

Cutting age for 1721

[@fredzephire4071]

@@darrellshuman7751 Was just thinking that lol.🤣🤣🤣

[@wildginsing]

That’s one smooth running machine…

[@lordieshepherd]

With the strength of a hollow bar, it's bent, and was the cotter pin in the right position? Sorry guys but this one will fail again easier.

[@richardjones3826]

Health and safety would have a heart attack watching this, and all done on a clapped out ancient lathe, good job. Juhaptergee

[@flyinwalenda]

They should try and fix their lathe first !

[@John-qe1wl]

That’s what you call a band aid fix. That isn’t going to last long, it’s so out of balance?

[@karirkedua5026]

good 👍👍

[@pkfan5112]

An outstanding mechanic

[@Titus9508]

Should last just long enough to drive to a garage that can fit a new shaft.

[@richardchampion4826]

Was that shaft cut?

[@stevegreen2432]

it sure did not break, unless it was hacksaw agrevated fatigue!

[@robertwillis4061]

​@@stevegreen2432No twisting or metal fatigue. So cut

[@andrewlayton9760]

I did not see any pattern in the break that looked like typical fatigue failure. I think it was cut, too. HOPEFULLY, this video is a set-up and this part never goes on a vehicle, but rather right back to the junkyard they got it from.

[@tonyzanotto1691]

​@andrewlayton9760 I think it's found it's junk yard to die in .

[@qacomputers3344]

Listen,I know supplies are minimal but, this is completely WRONG! This will break within day's and that's just facts...

[@SixPackDan]

im so old i remember when we fixed things in usa

[@MrButtonpresser]

Good for another 5000 rpm! At least! 😂

[@Sloggeth]

What do you mean by high speed vibration?

[@rickey5353]

"The first cut is the deepest." Rod Stewart.

[@adenlove9207]

Mickey Mouse Jobs?out of tolerance?TIR 3MM

[@firstlast-ty4di]

I noticed quite a bit of wobble after the root pass had been welded. If you look again during the final weld pass, the shaft appears to be back on axis.

[@antoniodonizettilopes6068]

Soldando em cima do barramento do torno!!!😮😮😮😮

[@dutch1589]

I have to admire the skill of the machinist using equipment that isn't even close to the most modern, KUDOS!

[@vannampham1206]

Sau cùng thợ tiện quên vặn 2 con bù loong .

[@calonjenazah8116]

hanya karena bisa mengelas dan menggunakan mesin lathe, itu sudah membuat mereka merasa keren namun bukan berarti mampu meningkatkan kecerdasannya.

[@gerryoneill8881]

It must be off an old machine where tolerances off a few mill either way don't matter, I can't think of any other reason where they think this shit job is ok.

[@DonnyHooterHoot]

You can't "fix" this. the part needs to be re-melted and re-cast. Oh well!

[@carlmorgan8452]

Showen to Be wrong

[@DonnyHooterHoot]

@@carlmorgan8452 LOL! Nope! Whee!!!!

[@DonnyHooterHoot]

@@carlmorgan8452 Yes, THEY are wrong, just like you are all the time.

[@joachimpohle5260]

I would weld the two parts like this PartA ===>

[@D-B-Cooper]

The shaft broke when it was solid now there are two spots at the end of the pin that are half as strong as before. They should of at least replaced the shaft from the crank.

[@jacksons1010]

The pin is not adding any torsional strength. The shaft is now effectively a tube, no stronger than the amount of material in the wall of that tube.

[@joachimpohle5260]

Thanks@@jacksons1010 ;)

[@scottwallace5180]

Give them 6 months and there all be in the UK not needing to work as labour would have given them all a free council house and benefits so they can spend more time on how they hate us all.

[@rls684]

Won't be an issue, that crank was cut in half to make the video. It will never be used for anything other than another video.

[@thepagan5432]

Oh dear another crock of shite makes it onto the web of all things unnatural. Turning is so eccentric this shaft could well induce motion sickness, the lathe 'Steady' wasn't, and was jumping up and down. When I turned eccentic shafts the balance weight would be comparable to the shaft eccentricity. Did anyone else notice how far the tool was off centre on the lathe ? I would be surprised if the shaft would even fit back into the housing, if it did the housing will disintegrate. Why these guys don't take up knitting instead of abusing metal is beyond me. I'm just a retired qualified engineer & consultant within the gear and gearbox industry, so what do I know ?

[@sailingoblio3991]

Horrible measurements!

[@garrylearmonth9313]

Everything gets thrown on the ground and then picked up again...... and then thrown on the ground and then gets picked up again.........

[@cornishcat11]

sounds like a chumbawamba lyric

[@gren509]

Assuming they use it to 30% of it's original rating it may last. Let's not forget, it wasn't made to F1 standards in the first place.

[@Tenright77]

Kept wondering if they got the OAL back to spec... Still interesting...

[@johnbrown-rm8kc]

Fantastic Work !!!

[@adimassuntoko8112]

The tradition is always throw thing😂😂😂😂

[@FredStpierre]

And just like that good as new

[@rolandgirard3955]

Great job of machining--a very skilled operator!

[@andrewlayton9760]

It's crap. He made it look pretty, but it's not just crap, it's unsafe crap. I DO appreciate that their resources are limited, but that does not mean it's a good repair.

[@ThomasJohnsom-gj7rz]

He doesn't know how to sharpen a drill properly. Both drills were only cutting on one face

[@StortWeldingCoLLC]

OSHA APPROVED

[@wilfredmuniyan-f6z]

Beautiful job

[@nikxohs3925]

alignment pin is to big. creates 2 weak points. pin dont keep anything, weld do

[@firstlast-ty4di]

What do you imagine the torque requirement for the shaft is?

[@nikxohs3925]

@@firstlast-ty4di i dont care pin must be 10-15% of axel diameter

[@firstlast-ty4di]

@@nikxohs3925 Caring about requirements is part of engineering. If you check a mechanics of materials reference, you will find that 90% of the torsional strength of a shaft is in only the outermost 50% diameter. That is: if you have a 2" solid round shaft and put a 1" hole in its center axis, you will only lose 10% of its torsional strength. Shaft are often solid only because it costs less to manufacture them that way.

[@nikxohs3925]

@@firstlast-ty4di i agree but they just do very big pins in any case, even in vertical loads

[@firstlast-ty4di]

@@nikxohs3925 Fair enough. Since I don't know the application for the repaired part, I can't say for sure whether it is good enough.

[@千葉勝己-t9d]

😂good“s🎉‼️

[@guycabral1847]

No cutting fluid?

[@ivantinepollon1553]

Eu não concordo com a introdução do macho e a fêmea ser muito profundo fica dois componentes separados fisicamente. A profundidade de 3 a 4 milimetro que é a fusão do eletrodo, a união dos dois componentes seria por inteiro.

[@snarkybuttcrack]

Pretty obvious why it broke with that huge unbalanced load it was throwing round, but you made it even weaker

[@jacksons1010]

I have to assume the surface where he welded and the ground with the wheel would be a bearing journal. It’s got to be a babbit bearing, so that out of round and course ground surface is going to eat up the babbit PDQ. God help anyone standing near the thing when it goes! 💥

[@transformer889]

All the sounds are normal where including chipmunk sounds

[@Richie4321richie]

Brilliant 👍👍

[@おとはまちゃん]

どうして　なぜ　ここが折れるの❗⁉️

[@千葉勝己-t9d]

金属疲労の可能性が､あります｡

[@andrzejporeda7281]

Przepięknie jest zrobiona ta praca Pozdrawiam serdecznie. 👍👍👍👍

[@cloviscloviscarvalho4227]

muito bom. gente alguém sabe que pais é esse? Porque o lugar que mostra não diz

[@mahmoudyasin2494]

Pakistan or India

[@ferroalloys594]

M.A.C. Manual Analogue Control... (c.f. C.N.C.) ):-)

[@Tatal.b]

Foi um belo trabalho 👍

[@adenlove9207]

What you know about machining and tolerance?

[@firstlast-ty4di]

@@adenlove9207 Tolerances are design requirements. I have no idea what the requirements are. I have no idea what the application for this crank is.

[@fergusof]

@@adenlove9207 Seems to know a bit about 'tolerance.'

[@christianvseggern6433]

1:05 wird einfach hingeschmissen scheißegal 🤯🤯😱‼️

[@chrisbraswell8864]

Watching Indians and Chinese work reminds me of the late 50's and 60's, people working hard to do a job so they can feed their families. Now OSHA would put them out of of business for the danger, and having to paying Social Security and Insurance about put a stop to that kind of work here we just send it there. Good job US Government.

[@andrewlayton9760]

Which 50s and 60s? 1850s and 1860s perhaps?

[@chrisbraswell8864]

@@andrewlayton9760 There was no Osha in the 1950's and 1960's.

[@andrewlayton9760]

@@chrisbraswell8864 And that has nothing to do with this.

[@davewardvodafone]

YOU CANOT BE SERIOUS 😱😱😱😱😱😱😱😱😱😱😱😱😱

[@vernonmcdowell2844]

Grease

[@steveroberts]

Clever fix. Well done

[@pastorvicrosado7278]

Great job.

[@АлександрНороха-б7л]

Класс. Для тупых видио

[@waksoden]

As usual, the bad comment comes from the west...

[@andrewlayton9760]

And the incompetent work comes from the sub-continent.

[@bimmerland]

All you critics are just haters!!!

[@rls684]

Correct, we hate fake repair video's.

[@markhuston9250]

Pretty damn amazing!

[@lesliewatts7537]

great skills....................... a pleasure to watch.

[@Wes-x9p]

Like watching a monkey FK football.

[@nerd3d-com]

12:50 So that's why the lathe is about to throw a rod. Bearings aren't ground leads.

[@MightyFarmMachines-k3s]

I just have to admire the tender loving care given to the broke parts