My great-grandfather left home at 14, and no-one today knows how he managed this, but somehow learned how to run an RD6. That same year he hitched into the rough project of building the Fort Peck Dam in Montanna, living in a tin and plywood shed at night and driving one of these every day. When I was little - maybe 6-8 years old - he stopped his truck one day to show me a Caterpillar RD6 hauling big lumber like your opening shot in a forest off of Highway 101 on the Oregon Coast near where he lived. He told me about how much he loved driving it when he was a young man, and to this day if I have a chance to stop and listen to a big old Caterpillar tractor, and no-one is in the car with me, I will stop and listen to that amazing sound and my amazing grandfather is there with me. Thank you for making this video on my birthday; I'm about the same age he was when that happened.

I love cool shit like this when it randomly gets recommended to me lol

@SorryIwasntListening

5 жыл бұрын

Me too... I knew the torque Vs horsepower thing but a great way of getting the idea over.

@davidmiller8530

5 жыл бұрын

Boom!

@terryisaac8195

5 жыл бұрын

Very interesting!!! I love the sound of that hard working D6 Cat!!!

@thestarlightalchemist7333

5 жыл бұрын

Same

@ICGedye

4 жыл бұрын

Totally agree

If it ever threw a rod it won't be shrapnel it would be an artillery shell.

@elilachappa3330

5 жыл бұрын

The way they knock it sounds like its about to chuck a rod at any moment lol

@f1y7rap

5 жыл бұрын

@@elilachappa3330 the way diesels should be...

@johncoops6897

5 жыл бұрын

It would be just like an artillery shell that was dropped on the ground during loading. The rods are not travelling fast enough to fly any distance whatsoever.

@bryanmartinez6600

5 жыл бұрын

@@johncoops6897 yeah 600 Rpm wouldn't launch it as far as if it spun 4k rpm

@DavidSmith-mk7qo

5 жыл бұрын

I wouldn't want to be within a 100 yds of a major failure. of that beast!!

"When this thing really lays back, gets under load and starts cackling." Well said.

@T..C..M

5 жыл бұрын

I've heard lesser men say that about their wives! Hey Oh!!

@-hiphopanonymous-7093

5 жыл бұрын

“When she starts makin noise”

@fredzephire4071

4 жыл бұрын

@@T..C..M lol

I've been a heavy diesel mechanic all my life. Extremely excellent demonstration and narration to answer the viewer's questions. You should consider teaching at some level.

@lewiemcneely9143

5 жыл бұрын

He does, every time he posts a video!

@DrMurdercock

5 жыл бұрын

Agreed. Some people can talk all day an not teach a single thing. This dude just has the knack for it. When people really know what they're talking about it, they believe it, hopefully because it's true. This dude, knows and believes what he is saying because it is indeed true. That translates into natural teaching. Good shit.

@corysmall3047

5 жыл бұрын

I agree. I also have been a heavy line diesel mechanic and he does explain it well. It makes it easier for people who don’t know these things so they can learn it. Good job spreading the knowledge!

@mathewkromeo2934

5 жыл бұрын

Hello. So this fellow has a 2007 International 9400i it has a Caterpillar C 15 in it. Has some rust and the engine has 645,000 miles. I'm thinking of buying it and rebuilding it.

@myofficegoes65

5 жыл бұрын

@@mathewkromeo2934 Make sure that C15 isn't the 2007-emissions engine that has the particulate trap. Some people had trouble getting the engine to regen at highway speeds due to the extra exhaust flow, requiring a parked regen. Some other people had trouble getting it to regen at all!

4 years of diesel school and six years in the shop. Never have I heard anything explained so simply and so thoroughly. Well done.

As a retired CAT&CUMMINGS knuckle buster I tell people quiet often that HP doesn't do the work TORQUE is what does the work!!!

One liter is 61.0254 cubic inches. Ten liters out of 3 pistons!

@gustavmeyrink_2.0

5 жыл бұрын

The Lanz Bulldog uses a single cylinder hot bulb engine with 10.3L of displacement producing 55hp at 750rpm.

@Zigg317

5 жыл бұрын

But then there's the CAT 3508! 34.5L from 8!!!! ...and also over 1000hp at 1500rpm.

@gustavmeyrink_2.0

5 жыл бұрын

@@Zigg317 yeah but each cylinder is a puny 4.3L

@popuptoaster

5 жыл бұрын

I don't think you can do a direct conversion to metric as used by Europeans etc, seem to remember Americans measure the total cylinder volume with the piston at BDC while the rest of us only measure swept volume? I could be wrong, things might have changed over the years but I definitely remember that you couldn't directly compare the number on the 70's V8s.

@gustavmeyrink_2.0

5 жыл бұрын

@@popuptoaster you could always compare engine size directly once you converted those silly cubic inches to sensible cubic centimeters. It was power output you couldn't compare because the Americans measured it without any auxilliaries connected which gave a much higher reading than the European way.

That was the clearest explaination of HP vs torque I've heard to date.

@otm646

5 жыл бұрын

It is an extremely inaccurate explanations of horsepower versus torque. Horsepower is work overtime, torque is an instantaneous force. 50 horsepower is 50 horsepower, it all comes down to gearing.

@robj2704

5 жыл бұрын

@@otm646 The description I've always heard is: Torque gets you up to speed, horsepower holds you there.

@nbtmx1

5 жыл бұрын

Just a Wee bit of googling and the way he explains it is spot on

@rickey5353

5 жыл бұрын

@@otm646 Not to sound contrary, my friend, but doesn't gearing imply leverage, as his demonstration conveyed ? I don't feel that his explaination negates your assertion as what you say is true also, however, he mentions that the beauty of this machine is that that particular engine can deliver torque through a large "rotating mass" at hundreds of RPM's, rather than "granny gear" high speed.

@yorkshirepud3030

5 жыл бұрын

In car terms horsepower is how fast you hit the wall, torque is how far you get through the wall!

if i had the cash i would buy a dozer and some land and just push stuff around.

@toad3222

5 жыл бұрын

Same man

@drsittler

4 жыл бұрын

That’s what my brother did. Never been happier.

@FlatlandMando

4 жыл бұрын

Common to a lot of people who want it simple & appreciate mechanical power at the human size level. Even to see that guy drag that huge stump with a little Cat was impressive.

@ThisIsSolution

4 жыл бұрын

You can get a job and they will pay you to do that

@martj1313

4 жыл бұрын

@@ThisIsSolution you need skills for a job, doubt anyone would want to pay me for playing around like a kid.

This guy didn’t bore me. He’s knowledgeable, articulate, and concise. Great teacher. Thank you sir.

Excellent tutorial. One camera, one man, one machine got more information across than most would with fancy graphics or recycled footage.

This RD6 will be running perfectly a hundred and fifty years from now. Great video, Cheers !

@HB45175

5 жыл бұрын

Yup, built to last.

Same bore and stroke as a John Deere model R, which was rated to 54 HP@975 RPM from Two Cylinders. Ok, now I want an RD-6

@stuartomant4033

5 жыл бұрын

They sure are a great bulldozer to have i want one as well. I know where a RD6 is but its in Tasmania where i live and it has not gone in over 30 years and would have to be pulled from where it is at the moment which is under some trees. But it would be a bulldozer that could be worth getting

@BobPegram

5 жыл бұрын

I knew the 2 cylinder Deere and this Cat Dozer sounded alike!

@geofham8332

5 жыл бұрын

Get in the line!!

@joesgarage8372

5 жыл бұрын

@@stuartomant4033 RD6's are a pretty rare thing down here in Tasmania you should probably jump on that one

@stuartomant4033

5 жыл бұрын

@@joesgarage8372 Agreed but just have to try and find the owner

I just love videos like this - someone who really knows and loves their subject, explaining it clearly and concisely. This is fascinating.

My grandad bought a brand new 1946 D-6 Cat, in 1946. LOL Up to then, he used horses to pull the equipment on the ranch. It was HUGE. It was six cylinder, smooooth running power. In low range first gear it would climb a slope we called the tractor hill that was so steep that you were a little anxious to even walk up. We used it to skid logs, and to farm a 5,000 acre wheat ranch. It pulled everything from self leveling combines to 70 foot wide double disc harrows over terrain that was very steeply sloped on most of it. I remember driving this Cat when I was 12 or 13, pulling rod weeders on some of the fields close to the house, just before my Dad ran over them with the seed drill. Had to crawl into the clutch tunnel once, to remove bolts because my Dad was too big to fit, because my older brother forgot to release the clutch while idling in neutral, and burnt up the dry clutch. My Dad finally retired from farming in 1980, and sold the D-6 for $45,000, which is about twice what they paid for it new. I did not love that tractor. It had a gasoline pony motor as a starter that was a real bitch to start in Washington State -20F winters, and God help you if you stalled it with the pony motor clutch engaged. Which I did once and once only. The pony motor was, of course, started with a pull rope. Ah, the memories..... The only thing that sounds more pop pop pop than that three cylinder Cat is a two cylinder John Deere crawler. About half the size and seemed like a piston fired every second or so at full bore.

I had the chance to run a D8 about 20 years ago that if memory serves me right was built in 1947. After running a newer version D6 from the early 90's it was really something to fill the blade of that D8 on a long push and feel it put it's head down and work. That D6 was nice with all the newer technology but it was a screamer and burned more fuel for the same amount of work at the end of the day as that D8. My John Deere two-cylinders from the same era share the same concept of torque and low RPM to get work done. My D has a bore and stroke of 6.175 X 7 (501 cubes) at 900 RPM, 29 draw bar, 42 belt hp. My 820 diesel is 6.125 X 8 (470 cubes) at 1125 RPM, 67 draw bar, 72 belt hp. Those old timer engineers understood big bore and torque and put it to good use, probably one of the biggest reasons this old equipment has lasted as long as it has!

Awesome explanation I worked at a gravel bank years ago and would reclaim with an old D8. You could count the fan blades go around she'd never stall. Thanks for bringing back memories.

I appreciate a true craftsman who not only can operate, but repair and most importantly explain the engineering involved. I found this channel completely by accident but now t has quickly become one of my favorites!

My favorite part is at the end when he takes his stump out for a walk around the property lol

I just love the sound of that old tractor. Like some others, I didn't know CAT made 3 cylinder engines either. I sure am glad they did. They have that wicked sound. Great video!

I am a big fan of slow turning diesels. this one is my new favorite.

@100pyatt

5 жыл бұрын

Me too !!

So ironically, it's actually quite under-square, making it technically a very big small bore. Very cool. Thanks for the video.

411 lbs of torque by my calculation. That's a beast!

@rickshaw5076

5 жыл бұрын

at 600 rpm load or max rpm? glad someone did the math.

@dustinleebladesmith9135

5 жыл бұрын

closer to 450

@bonkeydollocks1879

5 жыл бұрын

446

@golfman9290

4 жыл бұрын

one HP is the ability to move 33000lbs one FT in one minute. Worked out by James Watt of steam engine fame, by how much coal could be pulled from the mine, also the unit of energy was named after him, Watt.

"Those who can, do. Those who can't, teach." You do a fine job doing both. You're obviously a skilled mechanic, and you're a better teacher than most I've experienced in my lifetime. Kudos!

@samragsdale2127

5 жыл бұрын

The doers don't know what to do with out the teachers , that saying is dumbass cousin lovin talk radio dribble

@yardlimit8695

5 жыл бұрын

@@fowletm1992 VERY GOOD,,,,,,,I LIKE THAT.

@Colorado_Native

5 жыл бұрын

You forgot the part, "Those who can't teach, teach the teachers."

You really taught this well. Loved your analogy in explaining torque vs HP. Good job.

My neighbor had one of these when I was a kid, it would lug down to what sounded like about 200 RPM - maybe less! Low speed, high torque engines make my soul sing - that's REAL power!

You sound so smart sir. Very rare nowadays. Have a like.

I saw a printed saying one time that described it as: Horsepower is how fast you hit the wall, Torque is how far you take the wall with you. thought that was fairly clever in a simple way 😊 really enjoy the CATS !

@irvan36mm

5 жыл бұрын

Wow! I’ll have to remember that!

That Engine is indeed a thing of beauty thanks for explaining Regards Steve

This is one of the most interesting videos I've watched in a long time! I grew up on a homestead in Alaska, in the late 1940s and through the 1950s. My dad and our nearest neighbor cleared our place and our neighbor worked on his with a WWII surplus RD8 that was a remnant of the WWII Alcan Highway project. I read somewhere that the Army had something like 1500 of these RD8s on that project and they sold most of them for salvage right after the war was over. They were built from about 1935 to 1937. I remember my dad starting that beast in the winter with temps down around -20 degrees with a blow torch on the oil pan. Even with that, that little pony engine worked its tail off trying to get some life into that big 6. They may only have only had about 100 hp but they got an awful lot of work done both during the war, working between Alaska and Canada, and on our place throughout the 1950s. Oh, by the way, you've got another new subscriber. I'll be watching for more very interesting stories! Thanks, Gary

@squatch253

10 күн бұрын

Thanks and welcome aboard! I always give new subscribers a heads-up that I've got every video on the channel organized in Playlists where you can browse the different topics and select the type of videos that you want to see, all in one place and in order from earliest to most recent. Click on the "Playlists" tab on the main channel page and you're all set :-)

Horsepower = work/time Torque = turning force (work) 600 rpm at maximum torque is crazy slow which = low horsepower. Horsepower multiplied by 5252 divided by 600rpm equals 446 ft-lbs

@another1commenter770

5 жыл бұрын

These things were rated at about 50 to 60 horse power (52 by the spec sheet). They later got replaced by a 6 cylinder rated at 72 hp. These were slowed alot by drive train inertia and provided 45 and 55 HP at the draw bar respectively.

@matthewwilson2369

5 жыл бұрын

As I explained to a friend with a little turbo-charged sportscar (trying to encourage her to use more revs) - "ergs = spin times oomph"

@johnwade1095

5 жыл бұрын

You don't need much power for a dozer. More than 10hp per ton is wasted.

@TheEsseboy

4 жыл бұрын

@@johnwade1095 Depends on how fast you want to be dozing ;) Wanna pull that tree at 1.2 mph or 12 mph?

@johnwade1095

4 жыл бұрын

A vulgar excess of power is usually just about enough.

I used to work on an old direct reversing Superior diesel 14 1/2" bore X 20" stroke. Idle 125 RPM, full speed 350 RPM. Sweet sounding engine.

@frankbuck99

5 жыл бұрын

So the piston didn't move, the engine jumped up and down?

Thank you for the great demonstration and explanation! I love those old heavy, slow turning engines! Amazing torque, yet horsepower so modest from the old engines.

I love the sound of big bore cats when they are lugged down and pulling hard that chop and echo in the exhaust just sounds cool and tuff to me, it kinda like the inverse of a screaming Jimmy

Great vid very, very good explanation. I've worked on locomotives for over 25+ years, on everything EMD made, GE, and ALCOs as well. Best engines ever? The 251-C, D, E series from Schenectady! Cats...love 'em too. Worked on 'em in fishing boats as engineer on main power, and aux power plants. Greatest marine diesel out there bar non!

Soon as I saw that piston I squealed a little bit. Lol That's monstrous! Looks like one of those family size cans of Hanover greens beans with the label taken off, at first. "Here's a piston from the RD2 and here's a big ol empty can of green beans from the last family reunion." Hahaha

Great video and thanks for posting. Love to hear these old diesels, you can really tell it’s got power by just by the sound!

Not boring what so ever. A great explanation of big bore/stroke, low rpm & massive torque. Thank you.

A great presentation! My brother in law ran a diesel engine rebuilding business in Maine. Your presentation made me appreciate his expertise. Thank you for your engineering knowledge.

What a torque monster; you don't need RPM with the bore and stroke that's there with that beast. With a minimum of servicing these engines can last for a lifetime and more; old technology at its best. I enjoyed this video and no I didn't get bored. In fact you've got a new subscriber.

Wow, Great demonstration, I never knew anything about a RD6 , but the sound. Thanks

Informative.down to earth . Nice guy. Well planned presentation. Best if seen for a long time.

The first tractor I ever ran was an RD-7. We used to joke about how you could lug it down until you could count the strokes. Thanks for posting.

This is the first video I watched from this guy and boy do I wish more KZreadrs explain things as well as this man. Even brought out the manual and gave us numbers with interesting facts.

Great & informative! That piston/rod assembly was a monster!

Incredible engine and explanation ! The engineers really knew what they were doing back in the day, this was also before pollution controls where the only thing that really mattered was brute torque and reliability.. It will run almost forever ..Those days are gone.....

Toby, Great explanation ! Most interesting to learn about. Love the sound of that big old 3 cylinder working ! As always, Thanks for sharing ! Never a dull moment at your place !

Amazing!!! The learning curve in my life has expanded exponentially. Thank you for sharing.

@T..C..M

5 жыл бұрын

Sounds like my waistline 😉

Horsepower is how fast you hit the wall and torque is how far you take the wall with you. Fantastic video !

@atomicwedgie8176

5 жыл бұрын

I heard torque gets you moving and horsepower keeps you there.

@HelloKittyFanMan.

5 жыл бұрын

No, Johnny, it's the other way around.

@Just-Steve

5 жыл бұрын

You're comparing velocity and momentum to horsepower and torque. Not really the same thing.

@Counselor77

5 жыл бұрын

Actually, HORSEPOWER Is defined as the ability to do a certain amount of work in a given amount of time and TORQUE is defined by the twisting force of a shaft. One horsepower is 33,000 Ft.Lbs. per minute. It's the same as lifting 3,300 lbs 10 feet in one minute. or 550 ft. Lbs. per Second or 1,980,000 Ft. Lbs. per hour. JAMES WATT Came up the unit of horsepower while using a large draft (draught) horse to measure the horsepower of his steam engines. Power is the rate at which the work is done therefore the formula is POWER = Foot Pounds divided by Minutes. Ok: Horsepower - Speed vs Torque-Strength.

@HelloKittyFanMan.

5 жыл бұрын

Thanks for correcting yourself, @@Counselor77. You should just edit your main post with this material (except without all the random capital letters).

What an outstanding teaching moment!! You need to have a class for the high school physics and shop class!!

in few minutes this man shows all the details needed ! Amazing presentation mostly because he knows what his is saying and he loves classic models which means he knows what is best

@mikeymcmikeface5599

5 жыл бұрын

Yeah. Also clear speech and good pronunciation.

Best explanation of relationship of torque and horsepower i ever heard. Excellent job!

Thanks Professor Toby! I am glad you took the time to bring class into session.

Your enthusiasm for this machine and its details is really contagious.

Excellent video! I stumbled upon your video and out of curiosity, I watched it. Now I find myself wanting one just because the RD6 is so impressive! I would never use it but what a great investment!

That Cat RD 6 brings back memories of my dad in late 50s early 60s yep he ran a D 8 doser and in 65 he bot a komatsu.front end loader but he always raved about the cat.i still have his cat brass belt buckel. Grate vid on the RD6.thanks.

Didn't used to be drawn to this but I love motorcycle engines & marine diesel engines. This RD6 information is valuable learning material. I am probably not alone in saying " I want one"!

This video randomly appeared in my homepage recommended section. I'm really glad i watched it, great and fascinating video.

My Dad would have loved this, he used to service those great machines. 😥👌🏼

@HussAA23BBall

5 жыл бұрын

DeadlyDiddly rip

We had two RD-6's on our farm in South Florida, Both had the three cylinder engines. Thanks for sharing this video.

That friend was a great video. What an explanation! I love the way they sound too. I just hear ground pounding torque. And yet it just cheeches along like nothing doin!

I love the recommendations that youtube shows me. I never knew anything about these (nor did I know they existed) but I've been happy to watch and learn. Thanks for taking the time to make this!

Just ran across you,r channel ,seriously enjoyed how you explained and answerd the question looking forward to watching many more .

Excellent video. I'm an old coot and can remember the sound of these machines working, even though I'm not mechanically gifted.

Wow, truly an impressive old-school engine design...really good interesting video!

That was really cool! A great explanation of power and torque as well as why these gutsy little tractors were designed to chug along so slowly, just doin' their thing!

Man I am 43 and worked for a big paving company out of NC . I remember them pulling out this old rd8 . The fist time I seen that thing I was astonished at it mass compared to the d11 . The old guys had it brought to a job to use as a pusher because the newer machine couldn't get it . When that 70 year old man got on it he looked like he was taking his mistress out one more time . Even as a young man I knew I was whitnessing something special . And boy that thing was amazing . All the old guys stood and watched as it out performed the new machines .

Fantastic video! The piston comparison was impressive.

Very interesting and informative loved how you explained HP/Torque ! Loved the sound that RD 6

When I was in the USAF I saw power production guys standing on the crank with a long micrometer, measuring out the cylinder walls of a giant diesel generator. Talks about a low rpm. The generator turned by the engine was enormous.

This video has one of the best breakdowns of horse power vs torque I have seen. Good job! I seen too many video either over explain it to the point most people can't grasp it or under explain it to the point that it comes off sounds like they are the same thing. You just come right out and show that it's just simple leverage.

In 1970 I was working for a wheat farmer that had one. Serial number 346, a 1938 if I remember right. He had run over some posts and broken the fuel filter housing. The Cat dealer in Lewiston Idaho was able to get one in about a week (it was in Georgia). Cat, at least back then, supported their old equipment. Unlike some others I can think of.

@boomstickkid

5 жыл бұрын

they still are one of the best manufactures when it comes to parts support for old equipment, we have a few 70s era crawler loaders and have no issue getting parts. cant say that for most other manufactures out there.

@cbmech2563

5 жыл бұрын

Federal law says that a manufacturer has to support for 10 years after end of production , most of them don't do a day more . I worked on some 6 110s in 1970 (they stopped production in 58) , you could get after market rebuild kits but hard parts like the fuel rails were na, and the 110s would break them do to vibration from the length between cylinders (the 71s didn't have the problem . Cat has always done a good job of supporting their equipment . They are usually better at thinking of the mechanic that has to work on it .

@elonmust7470

5 жыл бұрын

That is a pretty area. I used to live in eastern OR

@cbmech2563

5 жыл бұрын

@@elonmust7470 lower edge of the Palouse country. Pretty as long as you don't mind dry. I worked on lower granite dam and Dworshak dam on the north fork of the Clearwater

@elonmust7470

5 жыл бұрын

@@cbmech2563 neat, dams fascinate me, Knowing that there is all kinds of stuff going on inside & under the water.

Gotta love the slow turning cat engines.

Thanks for sharing and providing the education on the D6! I was "wowed" with the size of the pistons...explained a lot. Surprising that there were only 3 of them, but they certainly get the job done!

My grandfather operated those old Cats his whole life. Thank you for letting me hear it again.

A VERY good explanation from a younger old mechanic. As a child I watched diesel take over, there are praises and complaints for both. But my propane tractors don't require as much maintenance though it takes a little longer. Take care from Oklahoma, Mike and Vee

Torque is a measured value, Horsepower is a calculated value based on torque and speed (in an engine application). So basically, torque is real, horsepower is an "idea" if you will.

@jdgimpa

5 жыл бұрын

Exactly torque is what moves the load, it is how much twisting force the engine can exert. Horse power is no good without torque.

@TheRedstar91

5 жыл бұрын

@@jdgimpa if you put a heavy weight on a long rod, you have very much torque but no power. if you put a motorcycle engine with 60hp in that tractor with a deep reduction gearbox, you can use the tractor almost like usual. Power is the bottom line. You can make anything out of Power, but nothing out of Torque if there is no speed.

@cindytepper8878

5 жыл бұрын

@@jdgimpa If you don't have torque, you can't have horsepower. Torque can be static with nothing at all moving. Horsepower is a measurement of work done. A horsepower is the ability to lift 33,000 pounds 1 foot in 1 minute's time.

@cindytepper8878

5 жыл бұрын

@@TheRedstar91 I always get the impression that most people confuse high torque numbers with a wide powerband

@bitsnpieces11

5 жыл бұрын

Cindy Tepper: A steam engine driven train produces it's highest torque at zero rpm. At that point the full steam pressure is applied to the piston which pushes against the wheel giving you torque or the ability to do work. You can see the wheels slip when too much torque is applied to them at a low, even stationary, speed. So it causes the wheel to overcome the adhesion of the track to wheel. At that same zero rpm you have zero hp.

Great video...presentation, description, and the sound of that three cylinder...awesome. At the 12:40 mark I realized that the stump became a brush clearer and creates a decent path. Thanks!

Great video. I like the way you explain the fundamental technical details in laymen's terms.

I don't even like tractors or knew what a D6 is. But it was such an amazing, informative video. Subscribed.

Someone once said horsepower is how hard you hit the wall. Torque is how far you take the wall with you

Dude, great video! I ran a 47A D7 for Weyerhauser back in the early '80's, and you could pull it down slow enough to hear each cylinder firing. What a beast, and that turbo whistle! Dear Lord I love the old Cats!

Came here from various recommendations. No idea about this type of equipment at all but found your explanation incredibly fascinating and presented in a friendly, understandable way. Subbed!

Thanks for the explanation Love the big slow running Cats

I always loved the sound of those large bore diesel engines. Kind of like the old mack trucks with a max rpm of 1000 rpm. They outwork newer engines all day long for the small HP they had

Very good explanation of torque vs HP. lt was always a bit fuzzy for me but always did have a grasp of how adding length to a lever increase ft. pounds of torque. Using those cranks and tying that concept to the length of piston rods made it all snap into place for me. Thanks much!

Thanks for a trip down memory lane,. I was 18 when starting out in civil engineering construction, on massive earthmoving projects in the UK, where every site was full of D8s, 9s and occasionally a 10, pushing 637 or Terex scrapers. I listened to this vid on HQ headphones, and the sound of your RD6 was bliss. Thanks again, diesel torque rules lol :)

Don't know if it's been said but that first audio sample was very high quality. Had a nice surround effect. Sounded natural. Dude has a good mic or two for sure. 👍

I've been pushing with my old d6b today I love watching your videos. Too bad they don't build these old cats again 👍👍👍👍👍👍👍👍👍

I've heard a lot of explanations of the difference between torque and horsepower. Yours, sir, is the absolute best explanation and illustration of the differences between them both... and why torque is so much more important when you're wanting to perform heavy work! Thank You!!!

Very good description of how they work. Thanks, I learned something today!

She is a thing of beauty. A very good explanation for an interesting question. Now i need a cold shower

When i served in the new york city transit authority in preliminary 8 week training the instructors always yelled " THERES NO SUCH THING AS A DUMB QUESTION-just dum answers- "T H I N K"

@jacknedry3925

4 жыл бұрын

There are SOME stupid questions

This is by far the best description I've ever heard to describe the difference between horsepower vs. Torque. Well displayed.

Thanks so much for explaining torque! Seeing your explanation with the 2 different length cranks helped me to finally understand it!!

Another Squatch253 school-day! Loving these lessons, and wishing everyday was a school day like this...

I love the sound of old CAT engines. The older bulldozers made some sweet sounds. The 1693 truck engines with pre-combustion chambers ( indirect injection) made some very interesting sounds. Find some videos on old Murphy Diesels, and I'm sure you'll love the sounds they made. My old 237 MACK diesel had a great sound. It would lug down to 850 rpms going through soft ground and just keep on going. I love engines that were built for lugging.

What an excellent demonstration and presentation, very well done Sir!

I was not expecting the size of those pistons you pulled out. I was surprised how big those things were, and that's comming from a guy who works on 35 and 3600s. I don't know much about the tractor side of things. That's amazing how much power those things are pushing at a rpm range lower than my cars idle lol