This Cummins Crankshaft Was Almost Scrap Metal...

[@BruceBoschek]

This video is beyond priceless. This is like watching magic and your father is the magician. I am 81 years old, have worked on automobiles and machinery much of my life, but have never seen such an excellent introduction to anything as complex as crankshaft grinding as this. Thank you very much for sharing this!

[@markstone1619]

Exactly what I was thinking and what I would have said. Tho I'm roughly 10 years younger. This video is truly priceless.

[@muhammadabid7857]

I am 23 and watching this, haha. I have been enjoying these videos quite a lot and at the same time learning so many new things. My dad, grandpa, and a lot of my family are/were machinists, but sadly, I never got a chance to see them in action. My dad had a machine shop similar to these good folks until I turned 13, and we moved away, and he switched his line of work. I am also becoming an engineer, and I think watching and understanding how things are actually made/maintained/repaired is such a valuable experience that 90 percent of the engineers have no clue about. Kudos to this dad/son duo for making these videos!

[@brenohighland1168]

i totally agree with you

[@Dave5843-d9m]

These skills are extremely rare because it’s usually cheaper to simply replace the crank or even the entire engine. But when there is no other way you’ll need experts like this.

[@jondavidmcnabb]

I’m not sure you realize just how awesome a machinist you dad is. His skills are absolutely impressive. He is an excellent teacher too!

[@WalkToPoland]

To me a great machinist is on the same level as a doctor.

[@jondavidmcnabb]

@@WalkToPoland Agreed, and my father and grandfather were both doctors.

[@nexpro6118]

Begs the question if it's just more cost effective with time and money to just replace the crank rather than pay someone to do this who has a ton of experience in it. This definitely isn't cheap to get done by someone who knows his or her shit very well.

[@FinalFront]

@@WalkToPoland You know it'd be kind of nice if steel could heal itself after making a mistake like the way our bodies heal after damage.

[@scottdowney4318]

@@FinalFront they can weld journals to add metal.

[@thurstonwhitehead]

I've been a machinist/tool and die maker for 45 years and this is the first time I've seen a crankshaft ground! Thank you, it was a wonderful video!

[@andrewashmore8000]

Me too , and it's so relaxing and peaceful.

[@davidhamilton7628]

I've allways wanted to see the full procedure this is great

[@tomstiel7576]

labor intensive for sure@@davidhamilton7628

[@gonesideways6621]

As a retired tool maker he didn't know what size radius he had only that it was similar in size to his radius gauge this radius on crank prevents cracks from forming when under stress we always ground radii on punches and other tooling that were under stress but on profile tooling if specs. called for .250 radius we ground that dimension to .250 plus or minus .0002 to have proper punch and die clearance.

[@ПравыйРуль-ф1ф]

Спасибо за хороший урок. Вы настоящий мастер, который любит и понимает свою работу. Здоровья и благополучия. Жду новых видео в этом году!

[@KCMedia33]

34:19 “okay I’m going to rotate the crankshaft 120 degrees” does it by feel. Lands the index only a couple thous out eyeing it. Master at his craft. Loved the video

[@zsigmondkara]

The movement pattern of your Dads hand tightening the steady rest just the right amount while grinding is a true testament of a master machinist becoming one with his machine. It's a humbling experience to see this kind of dedication to the craft.

[@nexpro6118]

Decades of experience to be this great at it.

[@nexpro6118]

This type of experience is what brings out the best in the engine parts for peek power and durability

[@AB-these-handles-are-stupid]

@@nexpro6118 yea, to me, this is the work of a million or two mile motor.

[@anytractorman]

My father used to wrap rubber inner tube strips around the journals , 4-7 wraps on each journal to aid with vibration.

[@TOONMAN200]

Fantastic video I'm a retired 35 year diesel mechanic, all the parts we put into the engine are nicely wrapped from the machine shop and ready to go. I never knew until I saw your video how much time and precision goes into getting those parts ready. I guess I'm trying to say it's machinist appreciation day. 😀

[@WilliamOrtiz-zm6uv]

Awesome 😊

[@timhogan745]

Watching your Dad is like watching my Dad when he was still here. From lubing the chucks to the way he explains everything. Brought a smile to my face. I was lucky to have a wealth of knowledge just like him.

[@reevehicks9101]

I absolutely LOVE how clean your shop is. Most machine shops I’ve been in is an absolute cluster f**k. If I was local I’d feel confident hiring your service

[@FinalFront]

Yeah one of the first machine shops I worked in was a filthy clusterfuck. Piles of tools, parts, everything coated with a thin layer of grease & metal shavings. I offered to clean it as it was making jobs take longer always having to search for things. Shop owner didn't want to pay me to clean it, so I cleaned it on my own time for free.

[@jerrypeal653]

I’m glad I found this channel I believe I’m just south of their shop . Not many good machine shops around anymore. I’m impressed by the care they have taken in machine work .

[@Ian-bq7gp]

In Switzerland you could eat dinner off the machines.

[@lloydrmc]

It might be worth shipping parts back and forth.

[@Yawles]

67 year old truck driver here. The ART of grinding cranks like this has been a fascination since I was a kid and overhauled my go-kart's 5hp gas engine. The skills, talent and most importantly patience to do this job the right way, everyday! God bless you for your talent, and thanks for letting us look over your shoulder.

[@bigmikeyc83]

This is so impressive. We need more guys like him around these days

[@jerryeinstandig7996]

this guy belongs to a vanishing breed, people who know how do things.

[@seldomseen7835]

Our shop teacher told us to start any grinder gradually as moisture gravitates to the low spot and an out of balance grinding wheel can shatter. If we had shop early on Monday you could hear the grinder vibrate on first. The load reason is valid too. Wobbels the mad Aussie.

[@kellyswaim8634]

I ground crankshafts for many years using a Berco RTM 300. Loved the "stabilizers" between counterweights! I even had a little umbrella shade on my Arnold gauge too. You guys have made a great and fun video explaining this process. Thank you crank brothers!

[@andrewmiller3834]

To say that this is "oddly satisfying" is a massive understatement. As a truck driver both driving and wrenching on trucks, I've seen "in-frame" overhauls up close. My father created a trucking company and in those early years I was a grease monkey. Dad had a couple of crankshafts standing on end in the corner of the shop. They were for Big Cam 400 Cummins. He always said they were good and now I know why he believed that. The details of dialing in all of those measurements blows me away. What an awesome video! Couldn't take my eyes off it!! Thank you very much for giving me a better understanding of the inner workings of a great engine!

[@davidtatum8682]

I've got a detroit 60 series with 850k on a rebuild. Bout due for another. This was super interesting.

[@davidjones8680]

We are all very privileged here to be watching a true master at work, one who is totally at one with his machine. SImply put, this is a grinding master-class. Many thanks for taking us along on this job. David in the UK.

[@joshua_lee732]

I've only ever seen this done in one of those time-lapse videos, glad I found one that actually explained the whole process.

[@BruceFJRay]

Thank you both so much for this VERY interesting video. As an OLD(80) yr. old 'gear head' from the big block era of the 60s, and a guy who still changes oil and greases the front end of my '02' Ford E250, I really appreciated the workmanship, and honesty shown in this video. BTW, I watched the tear down video of the 327. I rebuilt my share of small blocks way back when, that was a mess. Thank you for both videos. Sincerely, Bruce F. Raykiewicz.

[@robertwest3093]

I did not know grinding a crankshaft was this involved. You guys EARN your money!

[@harjinderkaur2384]

The way he explains n goes deep into it. Hes a very gud teacher to b a student of.

[@goodbyemr.anderson5065]

amazing. I'm so glad I found this channel. I lost my Dad back in 2010, and seeing you work so well with your father makes me smile.

[@imacgst27]

I lost mine in 2007 and still miss the projects with him. Watching other dad's with there kids doing things like this bring back the great memories with mine, no matter what the project was!

[@HE-pu3nt]

Really nice to see an engineer/machinist use the adjuster on the micrometer correctly! You see so many guys take a measurement, it's not what they wanted to see, but by applying 75ft/lb of torque to the micrometer everything's dandy.😂. I really wanted to be an engineer/machinist or toolmaker, but the family business was accountancy so I was pushed/shoved into that. Everything you've heard about accountancy is correct. It's as dull as dishwater. But it has given me the money to equip myself with some amazing machines. I've got a 4000sq/ft workshop, I buy old equipment, but I only buy the very best equipment going back 100 years. I like stuff that'll do 1/10 of a thou or better. Since everyone went to CNC i've picked up some amazing bargains. A fully fitted cabinet from Moore & Wright, with depth, length, internal radius, external radius gauges from 1 inch out to 36 inches all of it accurate to 0.1 thousands of an inch, all for £75. It was going to be put in a skip! I'm a widower and have been for 20 years, I don't go on holidays much, I'm really happy in my workshop. I've lost count on what I've spent, must be north of £250,000 on equipment and £175,000 on tool and gauge. I've found a young woman who loves it all, she's an amazing learner, she's almost finished her first steam engine, 10hp, twin cylinder locamotive. What she doesn't know, is that if she keeps up the interest, keeps studying and learning, then she get the lot in my will. Only just found this channel so lots to catch up. 👍

[@c5back9]

I had never seen this done before and had long wondered about how it is done. The attention to detail and personal dedication to excellence that are required are simply incredible! Hopefully there are a few young people out there learning this from experts like your dad.

[@muhammadabid7857]

Me! 🙋‍♂️ 23 and an engineering student. I found their channel and felt like I struck gold. Invaluable knowledge for all engineers who design the darn thing, haha!

[@stuartbagedonow9770]

Thanks Jim, very cool, I’m an old truck mechanic and back in a day and we’re talking 1975 I used to work on Cummins 318s and what I remember most about them is that they used to snap crankshafts. I’m not a machinist I’m a mechanic.

[@johnnyd9992]

I USED TO RUN A VAN NORMAN CYLINDRICAL..we did cranks we did hydraulic rams and polished with cork belts..i know this work and with experience it becomes old hat but ur dad did a great job of his explanation/execution and demonstration both your detail to set up shows in the finished quality of your work..

[@fr33dumb0]

I used to work at cummins JEP putting those cranks in the ISM and ISX engines. What a great place that was to work. Dunno what it's like these days but it was utterly astounding how good the workers there had it. Quality was absolutely amazing also.

[@mikelee6936]

You guys answered questions in my head that have been there for years. Thanks....

[@truthpurveyor8298]

I really enjoyed seeing you and your dad work together. As a young boy growing into a young man, I got to work with my dad who was an expert butcher in our butcher shop. There's nothing like learning a trade from a man that not only is an expert in his field, but loves his work and loves teaching his son to know the trade as well. I still appreciate my years in the market with my dad.

[@woodrow7201]

My gosh, I had no Idea the work that is done on a crank. The machine is awsome but the operators patience and experience are of equal value. Thanks guys

[@Junior-bu2xs]

I could honestly say I’d learn from you any day. A true leader is a teacher knows knowledge is power. Bless y’all.

[@giggiddy]

This fella is wearing a botton down shirt with an emaculate shop. A true pro and a dying breed. Love these guys.

[@davidkimmel4216]

One of the MOST Interesting Videos I’ve watched. I always thought machinists were very very smart operators. Now I know how important they really are. I’ve had several cranks ground but never realized how special they are. Thank You Thank You 😊

[@braveheartz263]

I like these videos, but I don’t know much about the work. Thank God for the educated and experienced people in all occupations.

[@rabidfarmer9765]

Most people have no idea how much work it is to hook a crank on the grinder for such small grind work. The setup will easily eat several hours - I can certainly appreciate the work involved.

[@Duschbag]

Been selling Industrial Tools for over forty years now. It is so very rewarding to see Craftsmen who know how to use and get the most performance from their tools. I especially enjoyed your Father showing his skills in Indicating the Crank Grinder before beginning work on each journal. I would love a visit to your shop just to sit and watch you two.... 😮

[@dancwilliams]

The amount of work that goes into setting this up is really amazing. I never thought about how complicated grinding a crank could be.

[@imacgst27]

I was thinking the same thing. I had 0 idea that it was that complex or took that much time and knowledge to grind a crankshaft.

[@davidmiller9485]

@@imacgst27 cam's are just as bad if not worse depending on the grind.

[@rudolfbenner4802]

A soft starter is an additional device that can be added to a typical AC electric motor that will allow the motor to use a different startup method. The purpose of this device is to reduce the strain put on the motor during the typical power-up phase of a motor.

[@175dell]

After watching these videos I really appreciate the level of precision and skill that goes into machining engine parts. I also understand why it costs what it does. Love the videos you guys!

[@donscott6431]

I’m 69 years old. Upon graduating high school in 1972, I got my first job at Brandon & Turnage Race Cars, an automotive machine shop in a suburb of Nashville Tennessee. Being a hot rod enthusiast, this was a dream job. I enrolled at Nashville Vocational Technical School at night, taking machine shop. Would love to share more but will just say that decade was the best one of my life. Fate dictated that my final occupation would be in the culinary world, but understanding machine-work and developing a “touch” for it has carried me into the higher echelon of the cooking world by developing said “touch” in my chosen field. Ran across this channel and subscribed immediately, realizing that a part of me still is an exacting machinist. Seeing some of you guys’ machines awakened that dormant self. Many thanks!!!

[@Kebekwoodcraft7375]

Been a Ford mechanic for 30 years and this is the work I never saw, very informative and interesting 🧐 thanks 😊 😊

[@kerondias2579]

He's the best teacher I've ever seen on KZbin brilliant

[@lesliesmith2586]

My father was an auto machinist for 50 years, being an instructor toward the end. I always saw him by the crank grinder and heard his stories about grinding cranks but never saw him set one up. Real interesting on how it all comes together. Thanks for the video.

[@johnwenzel9252]

Time for a new deck. Good winter job. Thanks Mike!

[@Trigger_32]

I saw no mistakes. Only happy little accidents. Watching this man set up a machine and work is comparable to watching Bob Ross. So educational, yet relaxing.

[@tablekwan]

I think it is around 31:21

[@Trigger_32]

@@tablekwan with all due respect.... You misunderstood my comment.

[@chrisjohnson4165]

And you can imagine some wispy little clouds on the horizon over there.

[@Len_M.]

Working with Metal is closest to Bob Ross’s philosophy, but some operations you can’t go back and add metal back

[@Trigger_32]

@@Len_M. not according to our friends who like to do everything while wearing sandals and squatting in the dirt, if you know what I mean😂😂😂

[@seventhson27]

One thing I remember about MACK truck engines is that the crank was ground to "whatever fit" one journal may be 5 under, the next 10 under the next 15 under and the next 5 under again. Then you just used whatever bearing fit.

[@jarredpfaff3953]

I'm just finding you guys and my goodness I love this. I'm 4 years into working with my dad as a diesel mechanic, so we're a father son team doing the before and after of your work here. He has like 45 years in the industry and he's been a great teacher too. Keep it up yall

[@darrensamuels1511]

I used to do this for a living as a apprentice then went and did a apprentice boilermaker welder more money but I did enjoy doing motor work. 🇦🇺🙏 we had the same machine at Mendham engineering I didn’t see you test the wheel with the ring test but you guys look after your wheels no doubt. We had books that would give us the off set for the weights so we could set up the big ends and the mains we just Center of the crankshaft. Love your work guys I do miss it sometimes. 19:54 what a smart idea. After watching this video our machine was a little bit different it was about 35 years ago.

[@chuckmcallister7322]

Amazing to see how willing and happy your dad is to do this work while being filmed and asked numerous questions. As someone who dabbles in machining quite frequently on an engine lathe, I have an enormous respect for his ability to maintain focus and tight tolerances under such circumstances. It's so easy to become distracted and make mistakes when you're trying to hold tolerances to tenths of a thousandth. Mad props to both of you!

[@redryderaus]

I think Jim would be a great instructor at a training facility. He explains things so well. We need to pass on the knowledge he has before it is lost.

[@stanhart705]

Great job without getting out in the weeds. Old Machinist myself. I have run Storms, van Normans. Peterson and Berco.. Again. Great job, not too many of us left.

[@YouCantSawSawdust]

Love your work,guys. I trained as an engine machinist/builder at Cummins in the late '80's.We did everthing in-house except for crankshaft grinding,,so it was good to see a Cummins crank getting machined correctly. Alll the measurements and magnaflux was done by us. To measure the fillet radius,we had different size spheres attatched to the end of a thin metal rod.Our magnaflux was the biggest in the southern hemisphere,300 volts d.c. This was at Cabramatta(aboriginal word),Sydney,Australia. Subscribed!👍

[@andrewashmore8000]

Thanks for sharing , first time I've ever had a crank grinding operation explained before.

[@Gregorybridgewater]

Thank you for this content! As a regular machinist for nearly 30yrs, I've always wondered how cranks were ground and never have seen a machine like this. What an amazing piece of equipment!

[@attilanagy2492]

nem vagyok semmilyen gépészeti szakmai tudás birtokában,csak az érdekelne hogy számolja ki a mester a köszörűkő kerületre eső kopását,hogy pontos legyen a megmunkálando alkatrész felületi átmérője és hogy a köszörükönek ne legyen alaki el változása.tisztelettel Nagy Attila MAGYARORSZÁG.this video is fantastic.

[@michaelhofer9149]

I have a totally deeper level of respect for the engine machinists that did work for me when I was building engines in the 70’s - 90’s! Thank you for opening my eyes. Your shop would be my go to shop if I was still in the industry.😊😊

[@robertweymouth415]

Just found your channel and it brings back a lot of memories. I learned the automotive machine shop trade from my uncles when I was 22 years old. What I was taught first was crankshaft work. They had the only submerged arc crankshaft welder in the state of Maine so we received crank work from all over the state. Mostly crankshafts that had spun a rod bearing, removed too much material to grind for undersized bearings, and where the heat of the spun bearing bent the crankshaft. We would put the crank in the crankshaft welder, preheat the shaft, and then weld the bad rod journal. Before we could grind the crankshaft, we had to straighten it using heat and a hydraulic crankshaft fixture to straighten the shaft to within .002 - .003. Some of the cranks were bent well over .100 before I straightened them. We also repaired worn thrust bearing and seal surfaces. On a couple of occasions, I welded and reground all the rod and main journals back to standard size of cranks that had been previously ground to the maximum of .060 under and the customer could not find a replacement. Anyway, watching you grind the Cummins crank brought make memories that are 44 years old as I remembered those familiar sounds of the coolant changing pitch as the wheel came closer to the journal and the ringing when you got into the radius and just touching the side of the journal. Is that a Peterson crankshaft grinder you have in your shop? I learned on an old Van Norman. All the best to you and your son and thanks again. Please keep making videos and I’ll keep watching.

[@alanclark639]

I've seen quite a few guys that consider themselves machinists but your dad is up a few levels! Quite amazing attention to detail and beautiful result - could spend all day watching. Best wishes from the U.K.

[@mikedee8876]

always wanted to see how a crank was ground....now this 74 and retired automotive and industrial mechanic can rest...thanks....accuracy is hard work...takes a special person.

[@1320pass]

This is gold. I missed my calling early in life. This kind of work is what I should be doing. Really appreciate the time and patience you both put into sharing your craft and profession. It is something to behold.

[@tonysayles2891]

AFTER READING SOME OF THE COMMENTS ,,, THAY REALLLY SAY IT ALL ,,, GREAT WORK GUY,S

[@steelfabmechanic6545]

Great video!! My father ran an engine machine shop for 40+ years. He use to do a lot of crank and cam work, and there were many cranks that came in he used the Eutectic spray welding on to bring them back into spec without taking too much material off. Grinding camshafts was the coolest thing, he use to grind a lot of custom profiles and lobe separations on them, use to build them back up if they were worn too.

[@imacgst27]

I would love to see that process

[@hoggzilla401]

i was a union Field machinist/millwright for 15 years and i always enjoyed getting a working buddy like your farther, a person to take the time and teach the younger Generation all the little tricks and full of wisdom of the trade. i appreciate the channel man. yourself and the Pops are doing an amazing job. kepp up the great work!

[@kennethwelch4261]

You guy’s are amazing to watch. You’re dad knows what he’s doing and cares about every single thing he does. Around here we all get scared when we have to take something to a machine shop because we aren’t sure what kinda hack job we’re going to get back. Keep up the good work!

[@weshawkins7165]

Just found your channel thru your tear down of Scanner Danners engine. My father was a tool and die maker from the 40’s, 50’s and 60’s, I turned out to be an auto technician, 50 plus years and still doing it, and my son is a welder. A family of tradesmen. This was extremely interesting to me and all I could keep thinking of was the engineering and design of the grinding machine and lathe. Amazing.

[@jeffryblackmon4846]

Wonderful! It is apparent that this gentleman is an artist and the machine is his instrument, as if he's a musician. He tunes it and accomplishes great results. I am reminded of my grandfather, back in the '60s, as I'd watch him work in his home shop. I wish I'd learned more from him at that time. Thanks for a fascinating video.

[@andrecleasby5173]

How I miss working in my machine shop in the U.K. I had a Schou crankshaft grinder. Berco boring machine. Various Kwikway and Sunnen machines. Miss it so much!

[@DarthVillar]

I'm an engineer that occasionally machines things. The artisanship and professionalism shown here is extraordinary, thank you for sharing!

[@theycallmedonkey6664]

Love how you guys explained the steady rest at the 28 minute mark

[@Malc2169]

I suspect your father was extremely disappointed in himself with the mishap leading to the chatter, but the true professional in him did a great job in recovering the crank. I hope in time under his tuition you inherit his wealth of skill and knowledge and can continue to build on his legacy.

[@Ujeb08]

But I'd bet it would never had happened if he wasn't being distracted by the filming and live questions.

[@ahndeux]

I bet he was glad it was on the first journal instead of the last one.

[@Harry1s]

What a great way to start the day! Thanks for sharing your Dad's knowledge.

[@CameronMcCreary]

Chatter is always the main enemy in turning these large cranks. Thank you for the demonstration of crankshaft grinding. I also subscribed and look forward to more similar demonstrations.

[@chaitanyakumar9626]

I once was instructed to use dead rod bearing on a crankshaft of a gas compressor, the crankshaft bearing surfaces were so scratched that you could stick your finger nail inside it. The gas compressor ran for atleast 10-11months after giving oil Temperature high laram and shutting down. After that we replaced the entire crankshaft, con rod, cross head and piston.

[@zas5892]

I love the way your dad is meticulous about making sure it's right and the fact that he teaches speaking out loud of everything that he does that is awesome

[@BlackstoneMalone]

Nothing like old school knowledge passed fown through generations!! I wish I had these guys local!! I'm sure all mechanics and engine builders do! Good machine shops with their level of knowledge is rare!

[@theoldbigmoose]

How well you and your Dad look our for your machines, is a sign of why you have PRECISION in your shop! Good job, and have a most blessed Christmas!

[@ampman5357]

Tell your pops to put a capacitor in parallel with the motor windings on that crank grinder. He was effectively “soft charging” the motor windings as to not bring it up to full speed with “cold” windings. I’d imagine you guys have 3 phase? A triphasic motor would be sweet too!

[@adrianlindsay3194]

I really admire all the precision you and your dad go through to ensure you've done a good job. Don't tell me it's good, show me its good.

[@kennethkemerer5381]

This man's knowledge is worth more than than ten ton of gold!!!

[@redryderaus]

Thanks for showing the whole process. Crankshaft grinding is one of those "black magic" processes that your Dad has spent years learning. That crank is probably more consistent across each journal than it was out of the Cummins factory. I don't think the small drop in bearing size will really matter.

[@brapbrapmafucka]

Ive heard of people boring one cylinder out of 8 and runnin it for a long time

[@colemckay2557]

I mean I just subscribed, but after I'm done my schooling for heavy duty I think I'm going for machining, this is always satisfying

[@soupbowlbandit5831]

this long format is awesome. I've had a idea how its done but seeing how much really gives me a new appreciation on how much work has gone into parts i've sent out.

[@romulusclay6697]

Im 60yo was raised by my father who grew up on a farm so I know how to pull off all the crazy ways to keep an engine going (aka backyard hack). watching your videos is truly amazing...

[@riderp123]

It was a pleasure and honor to watch and observe the master at work. Great job. Im always amazed by the skill and knowledge it takes to complete this type of work.

[@DarrenBoxhall]

Mother of god, this man is a legend. That's alot of work

[@jmumbauer]

That cleaning guy is really getting the hang of that crankshaft grinder! Seriously, thank you for showing us the entire process of grinding a crankshaft. We appreciate the in-depth content!

[@tutnallman]

Such skill and dexterity- awesome!

[@crabmansteve6844]

These lessons from your pops are incredible. He's a solid machinist, I'm glad you're getting to have this kind of life and experience with him. Best wishes to you both and thank you for your time and information!

[@flyonbyya]

My goodness..The volume of knowledge is astounding !

[@formulized94]

I have not finished watching the video, roughly half way through. It is my favorite so far. Great dynamic and the wash guy breaks it down so well. You guys make great content.

[@jaym5938]

Amazing the precision and process. Had a laugh putting Cummings and noodles together in the same sentence.

[@brianhines1865]

My god..i guess i was wrong when i asked my math teacher" when am i going to use this in life?" You guys rock. Love your stuff

[@joeellison-z2n]

Really enjoy your videos, I’m a retired machinist with 45 years experience and still enjoy watching and learning. Thank you

[@jdos2]

Fascinating work- you present your subject with such entertaining clarity- I would watch you experts at work all day! Always wanted to know how cranks were ground and how they were balanced and you've demonstrated them both so well. Thank you!

[@alistairshanks5099]

I am a motor mechanis that has been around machine shops but still did not realise how complex the older manual grinders were and I did not think a crank of that size would flex. I love to watch you work.

[@chrissraceporting7055]

You actually get the crankshaft closer to the correct specs than most engine machinists I've seen in 20+ years. You are a inspiration to be better than it will do

[@nexpro6118]

Begs the question if it's just more cost effective with time and money to just replace the crank rather than pay someone to do this who has a ton of experience in it. This definitely isn't cheap to get done by someone who knows his or her shit very well.

[@FinalFront]

@@nexpro6118 In some cases it is cheaper to just buy a new crankshaft. With something like a 5.9L Cummins it'll be $800 - $1000 for even a cheap Chinese crankshaft. Whereas it'd probably cost $200 - $300 to have the original crank reground. Which I've had such bad experiences with the cheap Chinese engine components that I'll personally never use them unless I absolutely have to. I've seen so many pistons, cams, cranks, connecting rods, bearings, etc. that are either manufactured way out of spec, made out of inferior steel/aluminum, or both. If it's something like a carburetor for a lawnmower then they usually work fine, but for a big 130lb Cummins diesel crankshaft...there's no way I'd take a chance on it.

[@nexpro6118]

@@FinalFront thank you for the response!!!!

[@mihaigheorghiu9071]

Then, the machinists in your region are shit. There is no other correct specs than the right specs.You either get the correct specs or you fail.

[@chrissraceporting7055]

@@mihaigheorghiu9071 I have trouble getting a head shaved properly. I found a specialist now but I have had 3 heads destroyed

[@timothyosullivan2904]

Hi Jim I must compliment you on attention to detail on the process of Crank-shaft Grinding , I would loved to have you as my teacher when I was serving my Apprenticeship many moons ago , I would consider you as the Master of all , people like are hard to find now-days, Keep up the good work Regards to Tim in Ireland .

[@Kavster92]

Your dad preserving motor windings by starting the wheel in sequence... exceptional attention to detail and acknowledgement that the tools he uses need to be respected! I love this channel please give us more 4.2 Jag!

[@colescrustycars]

I believe that machine is over 30 years old as well... it looks to be in excellent condition. You can tell he absolutely takes pride it what he does and his machines.

[@thomaskirkpatrick4031]

Keep the cleaning guy around, he really seems to know his stuff. The only way you get on a machine like this is through a lifetime of experience.

[@janusszakazu9318]

Niesamowita praca ! Doskonały nauczyciel który potrafi w bardzo prosty sposób wytłumaczyć wszystko od podstaw. Nie ma żadnych w wątpliwości że jesteście profesionalistami w swoim zawodzie. Podziw i szacunek za wspaniałą robotę. Pozdrowienia z Polski.

[@jasonwood1434]

This man shows why u give the job the PROFESSIONAL. He got it all going on... Good work Sir

[@albangaval]

Love the content! From a marketing pov, you may want to A/B test just posting the video. A premiere sends the notification when you first schedule it, but from the audience pov, it’s just a false alarm. Then when I try to find the video again in my notifications/subscription feed, I have to scroll back days to get the video. I’ve heard that creators get better notification stats and click through rates by avoiding premieres. Just something to consider, tho I saw your comment about engaging with the audience live and that’s valid too. Either way, you guys have been a part of my Sunday evenings for a while now. Love the consistency!

[@JAMSIONLINE]

I’ve tested both, and I find to have better luck with premiers. I understand it being a tease when it announces it ahead of time, but it also gives the audience time to plan their schedule in advance to make room for watching the video. From my perspective as both a creator and a content consumer, I don’t get why people get so upset over the content they get to consume for free. No different than a movie trailer coming out 6 months before the movie actually comes out.

[@albangaval]

@@JAMSIONLINE I love the perspective. Yeah I don’t get people getting upset either. I guess consuming content is so low-friction these days that any minor inconvenience stands out? Idk. Anyway, keep doing you man. I absolutely love the content.

[@joshb6420]

I'm incredibly impressed by the attention to detail, bravo. Whatever you guys charge, it's not enough