What happens when you over torque a bolt?

[@Biker790]

I'm a mechanical engineer working in the defense industry. I do a lot of calculation work on fasteners used in critical applications. As a result, I'm a total torque spec nerd when working on my own cars. You guys nailed a lot of the science. Only thing missing was mention of thread shear during the overview of failure modes, but maybe that's too much. Seeing the 'Donut take' on something I do professionally was awesome! Such a great video!

[@Dozav7]

Is thread shear just stripping the threads?

[@HawkyStudying]

One question, the max torque of a bolt is designed after its yield strength Rp0.2 or after its fracture toughness Kic due to the sharp edges and stress concentration?

[@Biker790]

@@Dozav7 Bingo! Commercially available fasteners are normally designed so that that threads won't shear before the fastener body/shank fails, but it can happen in certain applications/contexts (for example, inadequate thread engagement on a stud).

[@samo4866]

I'm a Metrologist, and deal with all of this. Made me geek out.

[@Neishy4AGTE]

They also seemed to miss the thread pitch affecting the leverage of the torque on the bolt stretch too, but you know I guess they don't wanna get too involved with it for a quick yourube video.

[@cryx4]

I think we all know that when you overtorque something, right tighty becomes righty loosy, and uggaduggas must be reconsidered

[@TaranBoost]

not everyone knows

[@evanmcmaster3900]

correction, quantity of uggaduggas must be reconsidered.

[@baconhair412]

idk man, that mustang can eat him any time it wants to

[@EzekielSimonn]

@R I T A • Н О Т • G І R L shut up

[@harrisonmcphee2507]

Just keep ugadugaing it till you think it’s good

[@mgcharoudin]

How many ugga-duggas are we talking about?

[@clintw4224]

All of them

[@batsoup9260]

Too many Ugga duggas

[@Miles26545]

Several

[@lexRTD.]

Lots

[@fuckngreat8955]

Yes

[@ab0x0fp0tat0s]

Had a broken 3/4" torque wrench in school and we were trying to torque U-bolts on a semi. When we realized that something was wrong, no one believed that we had a "broken" torque wrench and said that we just weren't there yet. Ended up stretching the bolt to the point where it snapped in half and sounded like a shotgun blast.

[@jorgecosta95]

it is very easy for a torque wrench to go out of spec.

[@lorenzoturturici4030]

@@jorgecosta95 z,

[@cliffmabus8732]

Holy hell you torque them?

[@dyslexiccone6676]

@@cliffmabus8732 that’s how shop class works

[@LawF250]

@@cliffmabus8732 you don't mess around with DOT stuff. That'd how you end up in prison...

[@Inanabananana]

Donut: **does mathematical calculations and experiments on torquing a bolt** Me: if righty righty becomes righty loosey, it’s an oopsie 😂

[@plastikk12]

I see you and I went to the same engineering school.

[@GGdevelopment]

Hahahaha

[@ScootsMcPoot]

In cars if righty is loosey youre prbably fucking with fuel lines or sensors lol. reverse threads are my best friend...

[@maxeronii5492]

@@ScootsMcPoot he means the threading gets fucked and it no longer can righty tighty ever again

[@mikeg9928]

Will you fix the sentence if your comment gets over 1k likes? Please? Lol

[@swagpig1741]

8:24 jerry: want to be safe. *hides behind mustang* Outstanding movie

[@atticusrallye702]

@@ritawant988 wtf

[@bruhnt5063]

@@ritawant988 sorry i don't speak enchantment table

[@danielstark8258]

Safest place to be if a mustang is around is right behind it. That’s a fact

[@shortmagort9590]

@@iwantsexseemyvideo4988 Are you f****ing kidding me AGAIN every comment

[@lethargicstove2024]

@@iwantsexseemyvideo1694 sorry I don’t speek scam

[@Neichus]

*Nobody: So what was this whole thing about?* Donut: *DEEZ NUTS* Ha!

[@dr.samsung_8855]

Ha got em

[@shortmagort9590]

@R I T A • Н О Т • G І R L oh my f***ing god Rita, get a life

[@Neichus]

@@shortmagort9590 😂😂

[@TaranBoost]

HA GOT EMMMM!

[@thompham6964]

jpnewPic88.men

[@kadmielclear9089]

This just seems like science garage

[@aaricmoreno-frank2337]

Was about to say the same thing

[@cinthe3]

Bring back science garage!

[@Him69429]

Yeah but less fun

[@justinanderson181]

@@aubreywright9121 what happened to Bart? I loved science garage

[@Him69429]

Where's up to speed? Been waiting for 6 months now

[@christophermcguinness3163]

My years of engineering school: Hey I know these words!

[@chibiskyrc]

Why did I pay $50k a year for 5 years to learn this same stuff I could've learned on Donut 😭 I love this show but I'm getting increasingly irritated lol

[@aziizus6592]

bro i’m getting payed to study lol

[@nawor2029]

@@chibiskyrc lmao i get 360 euros a month for going to school and 1 year costs 1200 euros

[@chibiskyrc]

@@nawor2029 Can you tell I live in America without telling you I live in America

[@nawor2029]

@@chibiskyrc yeah when i read 50k i knew it instantly lmao i live in the netherlands so the gov pays for my school pretty nice

[@Ferrarienzo347]

Took a whole semester long class on this stuff and learned more in this 10 min video

[@upsidedown4155]

Q: What happens when you over torque a bolt and snap it ? A: The new guy gets fired

[@nateverge1167]

Eff'n'gee!

[@jackryan4313]

@Sam Richard-Dickinson lmfao😂

[@vladtheimpala5532]

Life’s a bitch for the f’nugy

[@jonathanlandis3650]

“I can’t put any more torque on this,” dude there’s a torque multiplier for that.

[@ezekiellloyd8369]

Theres a tax for that - oversimplified

[@northernalteration8576]

Oh how much easier it would have been if they just used a torque multimeter.

[@paulmorrow8372]

Check out hydraulic torque wrenches with a reaction arm. Insane amounts of torque

[@jonathanlandis3650]

@@paulmorrow8372 yeah those are impressive, but it’s way easier and cheaper to get a torque multiplier.

[@Georgehanes-GJH105775]

@@jonathanlandis3650 I'll stick with my 10-foot breaker-bar and hydraulic jack. Lets me over-torque almost anything.

[@iamandreja]

I just sent this to my friend who's overtorquing 6mm bolts in aluminium engine covers.

[@iamandreja]

Update: he didn't want to watch it.

[@cargonomads4947]

iamandreja they never do

[@omgitsjoshie4578]

kjidh

[@prestoisakilla813]

@@iamandreja hes already invested heavy in tap sets and heli- coils hasnt he?lmao

[@iamandreja]

@@prestoisakilla813 Suuuuure... :D

[@devincatron1475]

Great video explaining a critical lesson! Something I was taught in my undergrad machine design course is that most of the loading (>90%) on the threads is handled by the first three threads making contact on the nut.

[@Wayne-n4z]

Agree in theory. What about idiot Ford spark plugs shooting out?

[@coherence_x54r]

My exhaust manifold is held on with Helicoils. *Guess why.*

[@jacobg5122]

The best way to learn new words is watching an old mechanic shear an injector holddown bolt flush with the head of an engine.

[@tiko4621]

Hey man, if it works, it works.

[@vincentmeredith2561]

Lol done learned you that the hard way

[@kirilakmadjov8307]

I am not an old mechanic not at all but ive had a snapped injector bolt flush with the head

[@Moto_Medics]

Same with the head of my first motorcycle... good learning experience I guess haha

[@yeah.8382]

Righty tighty becomes lefty loosey, simple as that.

[@billybull7419]

That's all they teach you in a Mechanical Engineering course

[@TheAwkwardBanana]

No, it becomes righty loosey.

[@panzerveps]

Righty loosey, not lefty.

[@yeah.8382]

@@panzerveps it’s all about perspective my friend

[@luuk8265]

I once found out that enough righties can become a loosey too

[@shafiqahmeddoddamani5921]

You explained stress graph much better than my professor 🙌.

[@blvckskull7954]

As a wiseman once said "Don't exceed the point of no return"

[@KuriShogun]

Except that they have the elastic range as a curve rather than straight line haha

[@blvckskull7954]

@@KuriShogun It usually starts with a straight line and ends with a curve, but it depends on the type of used material

[@KuriShogun]

@@blvckskull7954 well yeah but for steels it’s gonna follow Young’s modulus. They also got the overload plastic deformation bit wrong cause it will come back a bit but not completely to original length haha

[@blvckskull7954]

@@KuriShogun Exactly true! They did that just to explian the graph of plasticity in general without going into detail

[@louismarchesani2476]

Hey I’m supper into cars and a rookie mechanic. Your videos have inspired me to try and get my ASE! My older sister just sent me the book so now I’m studying as much as I can and just landed an amazing apprenticeship at a really good shop! Thank you Donut!

[@webguy943]

“The metal clamp between your nut” I felt that.

[@dhruvdingari5641]

I'm sure you did..

[@salt4821]

😬 😬 😬 i cant even imagine it

[@miokujou]

*"No matter if it's torque to spec or cross threaded, tight it tight"*

[@F_________________]

Not sure if anybody cares but the song in the background is: Cats Walking by Yomoti

[@AverageGamerPlayz]

I found it from rust youtubers

[@liana.chawngthu]

We don't care

[@abc123444555]

I care

[@liana.chawngthu]

@@abc123444555 it's not even that nice

[@pufferfish9045]

@@liana.chawngthu its called a statement kindergarten dropout

[@samknechtenhofer365]

This is incredible. This is like a well explained summary of an entire course in college. Wish I had this video back then.

[@davidlaughman5358]

Me: *Thinks about reusing rod bolts after a rebuild instead of waiting on the dealership* Donut: Wait a minute young one, this video is for you.

[@JeffLocke1]

Quick real question for you: did you happen to look up ARP rod bolts as an alternative? I'm curious how much the dealership is charging vs buying ARP.

[@davidlaughman5358]

@@JeffLocke1 I actually haven't seen arp bolts anywhere for a Genesis Coupe. But for a set of 12, it's $36. I'm pretty sure arp bolts would be more, but it's time for me at this point.

[@davidlaughman5358]

@R I T A • Н О Т • G І R L ????

[@Neishy4AGTE]

Really depends if they are torque to yield bolts, if not they would technically be fine but still get new ones if its easy enough.

[@Neishy4AGTE]

@R I T A • Н О Т • G І R L hmmm yes I see, do go on

[@qwertyazerty2137]

one of the best b2b episodes. very educative. testing that 1' bolt was hilarious. I really wanted to see its breaking point

[@owenswartzy7616]

Red thread locker on top of that torque that ain’t ever comin off😂

[@orrensorge9111]

but you see it cant be tight if its a liquid

[@prestoisakilla813]

you dont need torque spec or tty when youve got the almighty red loctite

[@garythecyclingnerd6219]

I'm very impressed with this video. As an ME grad, I can say this video has solid information on fasteners.

[@Clxiro]

Smart Snail

[@ianfinrir8724]

Pretty sure Jeremiah has an engineering degree.

[@Z006Y]

Day 7 of asking James to do more up to speed

[@kilovwdude6457]

Ye have forgotten Science garage

[@christianellano2147]

@@kilovwdude6457 only og remember science garage

[@deejayhandycam]

day 237 of asking james to do more speed

[@faln2923]

@@deejayhandycam SNIFFFFFFF

[@michaelhowell2326]

Why did they stop doing that show?

[@HeavyMetalHero115]

I remember learning about this in Diesel Tech. It was so mundane and annoying. Lol.

[@australianjock5793]

Same lol, I hate tap and die stuff too

[@tylerjack6018]

@@iwantsexseemyvideo1694 BEGONE, BOT

[@thepjup4507]

really? i think it's extremely interesting. maybe your teacher was mundane and annoying

[@Neishy4AGTE]

If you want to be a good tech it should of been interesting.

[@TheTyisawesome]

Omg ha actually made me laugh "extremely interesting"

[@bendgeddes]

Genuinely thanks for the clip. A few mechanics seemed to miss this part of the apprenticeship. Rattle-gunned-to-death wheel nuts have been a big problem in my world. 👍👍

[@Mebot29]

always torque them to spec, if lubbed up use 80-90% of torque youd usually use depending on the size and application

[@cirrustate8674]

That last minute or so gave me a greater understanding of the use of TTY than anything else I've seen/heard/read previously.

[@lucasvalleau4764]

“Hey guys we need a way to get people to support UCLA’s hospital” *James’s heart* “I got you•

[@coreypreston2277]

Appreciate the suprising amount of engineering and physics that goes into these videos

[@fluxcapacitor05]

What engineering and physics? This is sub-highschool grade physics at best. What exactly are you praising other than knowing a shocking amount of people don't have a high school education?

[@titicaca.]

​@@fluxcapacitor05 😢😢

[@morkovija]

Props for the dude risking his soul for us

[@danielstark8258]

@UNIA LTD ok

[@MrKushinator420]

@UNIA LTD nice

[@p2wratio458]

As a mechanical engineering student it’s kinda awesome to see guys make videos about this, this was a whole section of my intro to design class.

[@Ichibuns]

I used to build brake assemblies for an auto manufacturer. The assembly included the knuckle, hubs/bearings, disks(rotors), calipers, pads, abs sensors, control arms, etc. They took it seriously. EVERYTHING that touched the floor was to be thrown away. Bolts, clips, and even finished goods. They didn't want dust anywhere near those parts until they were fully assembled to the vehicle.

[@EclipsaMyrtenaster]

"What happens when you over-torque a bolt?" Roughly 3 things can happen but all end the same way.

[@Ltdo007]

Everything goes to shit

[@shortmagort9590]

@R I T A • Н О Т • G І R L FU

[@shortmagort9590]

@R I T A • Н О Т • G І R L Get a life

[@blvckskull7954]

​@@shortmagort9590 It's a bot acc! Report whenever you see it!

[@lolsloppy]

Day 173 of asking donut to bring back science garage with Bart

[@MrEazyE357]

Thank you! Where the hell is it?! I'm seriously considering a boycott.

[@obabolu4506]

There is no way you have done this a 173 times

[@Estevan_Leyva]

BRING BART BACK!

[@blvckskull7954]

Bart now works somewhere else! He prolly won't comeback to Donut, so just calm down!

[@moldyskittle]

Stupid, childish, ignorant and selfish. Especially the following comment. A tiny bit of research lets you know that it was: A: amicable and mutual. B: simply won’t happen. Please shut up.

[@leadfarmer_]

Always love seeing my boy Joey still has a job 😂

[@alexj.5207]

Yeah

[@msudawg1997]

I do structural testing of aerospace hardware. We had a steel test structure that had some 2" high strength bolts intended to be torqued close to yield. During install we broke one. Turns out the bolt coating and lube we were using had a much lower K factor than what was thought. So our torque resulted in more tension than we thought and overloaded the bolts. Fun fact: some of the bolts on RS25 rocket engine are tightened with the use of an extensionometer to precisely measure the exact stretch created in the fastener.

[@anthonygillette]

Thank the gods for this channel. I’ve been binging y’all’s videos for a few weeks now and it’s so much good car content with plenty of entertainment factor to boot. Thanks guys

[@randomasspotato550]

Donuts videos are really the only thing keeping me together at this point

[@theunknownone5663]

Everybody is asking about James dad but what happened to Bart?

[@Berserked]

Resigned from work or something along the lines. On to better things possibly He's with MotorTrend

[@tbtdylarn8611]

I miss bart

[@thegreatestturtieever7801]

bart has a kid now

[@drunkensenseiii]

Yeah, Bart was the one who got me into Donut. But i do love inside and outside jerry, and money pit is pretty fun to watch

[@adelsabic]

Everybody: It's just a simple screw Donat: Naah dude, listen....

[@shortmagort9590]

@@iwantsexseemyvideo1694 can you please stop

[@ssaraswati6053]

"I skipped my math class to see this video but here Jeremy was also teaching math😂🤧

[@blazzin42]

Makes sense!! I was replacing a diff cover when I first started wrenching, left a small amount of silicone on the tip, shaped with what seemed to me as no effort.... haven't done it since

[@phillipm3799]

This feels like science garage, and now I miss Bart.

[@zavierstanford332]

What actually happened to bart

[@julianr7124]

@@zavierstanford332 he got fired

[@michaelhonea7407]

I've noticed this too over the past few month, n I okay with that.

[@zavierstanford332]

@@julianr7124 :0

[@phillipm3799]

@@julianr7124 !! Why?

[@suryaraghavendran3627]

As a mechanical engineering student, this was a fantastic explanation of the stress strain curve!

[@MrWaheedulHaque]

donut media is the science teachers we wished we had growing up

[@qpSubZeroqp]

Thank you for explaining the idea behind the 1/4 turn. I was always told to do it but never told why I should follow that idea

[@carportchronicles1943]

I was rebuilding an engine many years ago and accidently used the torque spec for fastener listed below the fastener I was working on. I was supposed to torque my rod bolts to 10-pounds but wound up torqueing them to 100-pounds. I torqued several this way and didn't realize the error until the threads ripped out of one of the bolts as I was tightening it. Thankfully, a new set of rod bolts was not that expensive, and my local engine shop was able to get them the next day.

[@commanderstatix]

I just ripped off one of my wheel studs while installing my wheels. That hurt. 😔

[@Sheridantank]

I took of my wheels to hand polish them. Damn if I didn’t break a stud on 3 of the wheels

[@summerlysauce5557]

I snapped a drain bolt like two days ago and I see this

[@escapeartlst8870]

Well we need a update did you get it out?

[@jasonwolfe1027]

Have always did most of my owe fixing stuff instead of paying someone else to do it, most things not that hard, but never understood the degree torque, thanks for helping me make sense of it

[@ajburnett5640]

A cool thing about bolts/pins is some are meant to be crushed. I work with pins with threads on each end with opposite rotation from one another and by torquing the nuts you squeeze the center, expanding a Teflon piece in the center to make sure it doesn’t move in case a bit falls off. That being said we also step up the torque to keep it centered

[@joshuagibson2520]

If we still had shop classes, kids could learn this type of thing.

[@Champoforyx]

I’ve never seen a school that didn’t have one

[@jesses517]

Did something like this once me and my dad impacted the bolt then manually with a breaker heated with rose bud until after all that then we realized it is a brush hog and was tightening smart I know

[@bughuulss]

Day 67 of asking for the team to design a Dirty Dirk's Blinker Drink T-shirt from the Wheelhouse: Car Terms Every Car Nerd Needs To Know

[@mostafawaleed6197]

I just took this in college and I feel so happy that I actually know that! Also the graph region is elastic, elastic plastic, plastic It’s 3 regions not 2

[@Jordan-rc7hl]

We used bolt stretch on main journal bearing studs using a hydraulic wrench as this gave more reliable torque results than using a standard torque wrench, specifically because of the size of these studs( these were used in a 5,000 hp genset) we used a dial indicator and they had to stretch to specific length, these were .032. If they didn't stretch after going up to 10,000 psi, the bolt had seen plastic deformation before( either by use or an imperfection in the forging process) and was thrown out.

[@MisterMoray]

It's all fun and games until a forklift drops off a pallet of 2 1/2" studs.

[@jnrdingo1233]

I work for a fasteners company, and those types of studs are no joke. They are used in the oil and mining industry, and man, just reading through their spec sheets is insane.

[@voice_crack_gamer6937]

“bro i’m scared Lol”😂😂😂😂😂😂😂😂😂

[@PaganiGaming]

Day 283 of asking James to do an Up to speed on his Dad

[@beamracer9408]

Pagani gaming here when we need him

[@Aksomaniac]

Yowza

[@exiege]

legend

[@southhickory8019]

Please James

[@SkyHighGD]

The return of the legend. Keep going, still waiting for that episode. Good luck and have a great day

[@henryoneil5461]

This is Gold!! Thank you. I am explaining plastic vs. elastic with fateners for my automotive students.

[@johnbarron4265]

The tensile load in a bolt is directly proportional to the torque applied to said bolt. The constant of proportionality depends on the thread pitch, mean thread diameter, and coefficient of friction. Torque figures on bolts are almost always specified when the bolt is clean and dry, so that a known relationship between torque and tensile load will apply. If a lubricant is used on the threads, then that throws a lot of uncertainty into the torque-clamp load relationship. If a bolt is overtorqued, it may still be useable. One way to tell for sure is if you can still spin a hex nut all the way up and down the threads with little to no resistance.

[@KillerViper16]

I failed a Material Science test today and todays episode is about stress strain curves. Brilliant.

[@iatehamborger5579]

10:51 *lube lowers friction (;*

[@ElBach1y]

I had a dream last night a girl lubed up and stuck fingers in my ass.....

[@All_SportGG]

@@ElBach1y noice

[@specialistvett4596]

@@ElBach1y sounds hot.

[@bigchungus4243]

I wish bart was here

[@jamesbondo5895]

Whatever happened to him?

[@derrickstorm6976]

I could really have used him right now

[@ryanjohnson9325]

I got a 3/4" snap on ratchet that has been through a similar scenario and survived 8ft cheater bar though.

[@danmac6185]

As an Aviation Technician this warms my heart to see. I watched a video before changing the control arms on my Sunfire. The guy in the video said "just tighten it as hard as you can. You don't want this to come loose." I corrected him in the comment section and got blasted by people for it 😄.

[@jeremyanderson6395]

Him: "And it didn't fail, so what gives?" Me: Obviously not that bolt....I'll see myself out.

[@jonathanwilson1672]

This gives me PTSD.

[@TS_Mind_Swept]

I still want to see the thing break...i thought y'all we're going to pull it off, but perhaps it's a job for HPC 👀

[@bradnoyes7955]

3:30 after the material experiences plastic deformation, it will still have some elastic deformation that will reverse or 'snap back' when the load is released but your stress/strain curve will be shifted by the amount of the plastic deformation.

[@ryanprokos524]

this ain’t b2b this just fancy science garage

[@bonperal]

Ask me about the broken valve cover bolt on my 2006 outback xt...on the other hand...don't ask.

[@iwantsexseemyvideo4988]

გიგი

[@JOLIEKdesign]

I fucking feel that. Subaru head and blocks are fucking trash

[@samueljordan5601]

Can someone explain to me why he left the sticker on the face shield the entire time?

[@Cokecanninja]

It's almost Wednesday I'm so excited

[@spokenrock5]

3:23 Did you know engineers purposefully get head bolts into the elastic range? It allows for that stretch on purpose. That’s why you are required to replace head bolts with new head bolts when you reinstall it.

[@esoteric__]

Props to the manufacturer of that breaker bar!

[@tristanperry351]

This needs to be shown in high school physics classes

[@blvckskull7954]

You'll find that when studying mechanical engineering

[@vypertyper4789]

plz do up to speed on new years eve

[@pramienjager2103]

Watching this I knew that socket was going to give long before that 1" bolt did. Glad no one was hurt and this was a great explanation even for someone who had a pretty good idea what was going on anyway.

[@timplacke1521]

I love seeing this explained like this. I'm an engineering student and obviously it's explained a bit simpler but it's explained very well here

[@officialelonmuskyoutubecha4905]

8:16 me when I’m in a polish strip club

[@Punklynn911]

Random fact of the day: turtles breathe out of there butts

[@technom3598]

So do liberals

[@Punklynn911]

Ok

[@yeatfan5886]

Day 54 of asking James to be my cool uncle

[@Valinorphysio]

Interestingly the elastic/plastic/ deformation related to tensile strength is the same science we apply to human anatomy relative to ligaments, tendons, muscles and fascia etc to explain/ prevent neuromusculoskeletal injury.

[@SamGagner12]

Being one of the few mechanical engineers in the comment section, one thing that they didn't mention is WHY there is a torque specification. Torque specifications are required to produce a given preload in the bolt. Bolt preload for static loading prevents joint separation and yielding of the bolt and bolt preload for dynamic loading prevents fatigue and reduces the alternating stresses in cyclic loading. It's important to have this preload to effectively reduce the forces on the bolt and bolted members as well.

[@CraigPatersonII]

I'm really impressed with the breaker bar being able to take all of that force.

[@speedracer739]

I love this hands on bumper to bumper experiments. Definitely most fun to watch you guys do this experiment with a bunch of shabby unsafe equipment

[@dreiback182]

In germany we have saying coming from a movie which is: Nach Fest kommt ab! Which translates to: After tight comes loose (Because the bolt or the threats or what ever snaps)

[@jackyha9445]

All I see in my head is that scene from Community where Chang's destroying Jeff's car and Jeff comes out and he's like "you're wearing safety goggles while destroying my car?!" And Chang responds "Safety first!"

[@josephkopka8776]

not only is the area of the bolt doubled but the radius of the bolt is increased so the torque you put on the bolt corresponds to less force. clamping force is roughly a function of radius, thread pitch, and torque applied

[@ryanwilson_canada]

Thank you for actually explaining that a bit better at the end. Lol, i was sitting there thinking back to school, and also Fireball Tools video going: but but but you're missing a few factors. Excellent video everyone. Keep it up.

[@austinphillips5115]

As a senior Mechanical Engineering student, I gotta say I really appreciate this. This was really well done.

[@Evan_Moore61]

7:13 “Do you need a ladder?” With the freaking Ranger tailgate down not even two feet behind him. They probably had to move the Ranger to put the ladder there. 😂

[@kateortiz3813]

FUN FACT: On a CH-47D helicopter the PC links are torqued to 400 to 660 IN LBS it has a castle nut you have to line a cotter pin up in the key way. You can go to 660 three times before replacing the hardware. But you have to change the castle nut Everytime you removed the torqued nut after flight.

[@Justinwhat1]

Wish I woulda seen this a month ago. Just replaced all the TTY bolts on my camshafts, because I over torqued them by 30 degrees. In reality I probably just pushed them further into the “plastic” range, without damaging anything.

[@havingfun8192]

I play with heavy equipment at work and we have cordless power tools capable of more than 4000 ft/lbs. I’m very familiar with most tools hand or otherwise are capable of, while you don’t need anything even close to 13 foot long pipe to reach 1000 ft/lbs im more amazed the drive didn’t snap on that 1/2” breaker bar.

[@matthewkloep8391]

Late bolt will shear before normal stress becomes a problem. Tc/J IS formula. Ductile materials like most metals break with shear then stress in applications like this. Also at 45 degrees is the max shear angle to you get a cone shape at end.