I’m a pharmacist in a city and will never use one of these. But I love these educational videos!

@sdsuch4353

2 жыл бұрын

Thanks for your perciverence, diligence, and abilities to stay on the path.

@fourgedmushrooms5958

2 жыл бұрын

Save and retire to semi rural. Get yourself a subcompact tractor. Great fun

@prosperity4444

2 жыл бұрын

You can use it to push drugs

Sure do appreciate your willingness to share your knowledge of equipment with us. Thank you.

I've run many of both types. The high track offers 2 advantages, being up higher helps visibility , blade corners especially. 2 keeping the drive sprockets up higher clears debris by gravity and is less likely to pick up wire( straight or barbed) and other oil seal cutters that get wrapped up around the final drive. Part of this " up high" drives keeps water from entering the drives if the seals do get damaged.

I remember having the dealer out of MN flying us to Peoria to tour the Cat plants. One thing that we were told as they were building a D10, 1979, was that they specifically stated they could get more horsepower to the ground with this high track design. The other thing I found amazing was that they assembled the D10 fully, ran it through a battery of tests, then disassembled it for shipping.

I've run both for many years. I'll take a high drive any day. When you shovel the mud with vegetation out of a flat bottom versus a high drive you'll understand what I mean. The high drives last longer for trackwear but they also cost more.

@Vickvineager

2 жыл бұрын

The biggest pain in the ass at the end of the day.

@SMOBY44

2 жыл бұрын

I always thought the high tracks had higher center clearance, just a novice thought.

@scotcoon1186

2 жыл бұрын

An extra 3 feet of track means the same number of turns of the track goes a lot farther at the end of the day.

@reubeng2110

2 жыл бұрын

wow you cleaned your tracks out i rarely seen a operator do that they didnt want to get dirty instead when they were off shift and the trucker says i cant go down the road like this the shift boss always seemed to think it was oilers and mechanics job since we were still working

@wvjeepguy8178

2 жыл бұрын

99% of operators won't touch tracks if there is an oiler around.

As a long time dozer operator with a bad back, the most important thing to me is comfort. Those low track dozers beat the crap out of you compared to the high track Cats.

The dirt and debris has a chance to fall away from the drive sprocket minimizing tooth and chain wear

@williamh.jarvis6795

2 жыл бұрын

This is exactly what I believe as well, with the "high drive" sprokets versus the standard track drive sprockets. Dirt wearing out the teeth on the track driving sprockets. Never knew about the so-called planetary gearing, working similar to an automatic transmission.

@stevenfeser4907

2 жыл бұрын

@@williamh.jarvis6795 conversely, there is additional wear on each sprocket and pin due to the decrease in surface area across the radius. planetary gears are used in a lot of applications, generally though, its in final drives.

@mikehand1910

2 жыл бұрын

You're so right.

@peterszar

2 жыл бұрын

You got it.

@johncunningham4820

2 жыл бұрын

@@williamh.jarvis6795 . Super Heavy haul Trucks have been using Planetary Diffs for Decades . Easy to spot . F A T hubs on the Drive wheels .

I just retired from Cat. When I joined the company in 1988, one of the Track Type Tractor project engineers, George Alexander was recalling the first customer they showed the high drive to. The customer was so excited that his final drive problems were going to be solved by the new design. You are right on just about everything you talked about. I'm not sure about the stability comments. It is so dependent on track width and what machine you are comparing it to. As far as underpowered versus overpowered, there is a magic weight to horsepower ratio of between 220 and 250 pounds per horsepower. Depending how it is configured Blade/winch/ripper/ tracks that ratio can make it feel like you are underpowered. If your track is slipping because there's too much horsepower, it may feel like you are doing more work when you are not. You are just wearing out the track.

@C_CEQUIPMENT

2 жыл бұрын

Yep

@berryreading4809

2 жыл бұрын

I had the pleasure of working at a very small CAT plant as an outside contractor doing several interior retrofits and office additions a few years ago before they moved operations back home to Peoria/ overseas... While sad that they shut down, getting to work there a few times over the years was a blast! The plant manager had been working there since the day they opened the facility (just a starting position at the time), along with lots of the line employees/section managers who were still there... One of the few factories I've worked at where people went well out of their way to help me with countless things to get the projects completed safely, without interrupting workflow, instead of trying to shut down thier section for a nice break or spy on me in hopes of getting some kind of safety violation reporting brownie points...

@Agnemons

2 жыл бұрын

What most people don't realise is that the point of maximum traction is that point just before you start skidding. Although on wheel tractors max traction is with about 11% slip.

I live in the Peoria, IL area. The home of CAT. Back in the 80s my neighbor, a CAT engineer, was assigned to the CAT's High Drive initiative for the D9. The main reason for moving the drive sprocket was to reduce wear and damage to the unit. There were problems with track supplied by a company in Italy and my neighbor made several trips to Italy resolve the issues.

@carrollsanders9376

2 жыл бұрын

HYDRIVE was done to allow room for the Differecial drive axle and steering motor, still have the Popular Mechanics Magazine on it, was a collaboration between cat and Mitsubishi, one of the first prototype dozens actually used a steering wheel, it later became the cat Challenger Agricultural Tractor.

@devilsatan2973

2 жыл бұрын

@@carrollsanders9376 You really trust everything the magazines tell ya? I don't! Their a combination of fact & opinion. With more opinion, less fact.

@carrollsanders9376

2 жыл бұрын

@@devilsatan2973 They talked with the engineers from Mitsubishi who designed Differecial steering for the marine Corps, OH it was HYDRIVE too, it's not even a CaT design, Cat Just bought the Right to use it in Heavy equipment.

I've run both over the years and had more time on low track machines as that's all they pretty much had at the mine and ash landfill. So I might be more biased towards them, but overall the low track machines are more of what I'd choose. I worked on 2:1 and steeper slopes a lot so the rollover risk was always there. Like you said, you could definitely see the high side pads in the air even on a D6K which is a low track model. The only thing holding you in place was the windrow at times. The high track machines have their place and traction seemed to be one of them. Taking a little longer to get stuck too is another. Learn to run what you can though. The more experience the better.

I have been operating heavy equipment for 48 years, since I was 15. The visibility off the Cat high track is so sweet we could actually grade off gravel on US Highway jobs to the same degree as a road grader. And back in the day I actually was finish grade on a grader using the old style whisker stakes. Never had a problem on a slope, it feels like it is unstable but the majority of the weight is lower in the unit. I will choose a high track any day of the week!

It's good to hear the Pros and Cons of these drive systems. Thanks Clint.

I really hope your son takes full advantage of the knowledge you give and the practical experience he can get from you, just incase he might need it some time in the future thank you Clint more knowledge better life.

Great explanation Clint, love your videos, think positive test negative . 🇨🇦

Thanks so much Clint. Like so many others, I appreciate your time and effort to help us understand more about the why and how of equipment operation and engineering. Always look forward to seeing a new video from C&C Equipment!!

Interesting discussion, thanks for that. My expectation is that there would be more trouble with the sprocket aspect since there is so much less degrees of wrap like about 120 degrees vs 180 degrees.

@sjg3890

2 жыл бұрын

Not an issue. There is still plenty of teeth engaging with the chain. With a friction drive rubber belt, contact area is important.

@elbuggo

2 жыл бұрын

The belt is only grabbing on 2-3 teeth at the time anyway.

@williamcrawford805

2 жыл бұрын

I discussed this point in Peoria with the D10 undercarriage designer and he said the 80deg chain contact was not a problem. I was always told 120deg was a minimum

I’ve owned, maintained, and run both. Give me a standard set up all day every day! The FEW advantages of the high drive are totally outweighed by the disadvantages.

So in my experience it has always been about traction. After running both flat track and hi track you can get a flat track into anything but can’t get it back out. When you are pushing your track is pulled tight on the ground with all the rail slack on top between your final and your idler. When you reverse all of that goes loose on the bottom of your track frame. Now the top side is tight. With all of the slack under your machine the track pads won’t grip the ground and let’s you slip in reverse where it never would going forward. Where with the hi teach the ground side of the track is always tight because it’s pulling between an idler and the final without bunching on the ground.

@greggmcclelland8430

2 жыл бұрын

Also, most of the high drives have suspended bogies on the track rollers that keep contact with the ground giving it better traction on rocky underfoot soils when the tractor is under load.

@technicalitems731

2 жыл бұрын

Damn good observation

@Snowbatman99

2 жыл бұрын

Yes, you are exactly right and thankfully there is another operator out there that has been paying attention, I usually get a blank stare when I try to explain this.

@brianbonney2895

2 жыл бұрын

To the one that made the original post you are wrong you get better traction when the tracks is loose on the bottom... It will conform to depressions and hook anything on the ground whereas if it's tight it's just hanging there. Logger!

@jeremymyers5643

2 жыл бұрын

Was also under the impression your less likely to throw a track this way, as the slack is never under the machine.

Also moving the operator station toward center. Balanced ride. Everything stacks in the center in a modular way. Also, backs up a slope better as the track protrudes out past the rear.

Thanks for answering a question that has been on my mind. By the way, you described the planetary gear system perfectly. The description you painted in my mind matched the picture you posted in the video

Thanks I’ve run older style D-7’s and 8’s in the Army Reserve and always wondered about the high track

The Cat high track system came out on the first D10 Cat tractors. There was the idea of a high horsepower tractor breaking bull gears with the amount of power the things made. But another reason was getting the seals and sprockets of the final drive out of the mud. The high track final drive is above a lot of the mud and "stobs" banging on the oil seals and since the D10 was designed for heavy work in quarries and open pit mines to move a lot of heavy material quickly the idea made a lot of sense. Before the D10, Cat tried to slave two D9's together. One configuration was a push/pull with a large high blade. The other configuration was a side by side that pushed a wide blade to move a lot of light material. Both solutions were clumsy and hard to operate. (The King Ranch in South Texas did use a D9SXS - side by side - to quickly clear brushland to improve pasture grasslands, or to cut pipeline right of ways.) The D10 was developed because of the demand for a large tractor and because other manufacturers were developing tractors of comparable size and weight of the D10 at the time. I first saw a D10 at a demonstration in Corpus Christi Texas when the local Cat dealer created a berm that concealed the D10 from view. Three Cat excavators began the show by walking over the berm, spinning around as they walked, demonstrating their stability. When they moved onto the flat, and were out of the way, The D10 pushed through the berm. It was impressive. Especially considering how large the D10 was compared to the D9 that followed it through the cut. I do enjoy your videos. Thanks for the hard work.

@C_CEQUIPMENT

2 жыл бұрын

Thanks

@RJ1999x

2 жыл бұрын

it was actually a marketing gimmick and any non cat Kool aid drinkers know the high drives are worse then the old style. The D10 even with a high drive couldn't out push a HD41

@MrLeslloyd

2 жыл бұрын

@@RJ1999x I used to operate D9H's in the late 70's,we got in a 41B,was amazed at what it could push through that would just stall out the converter on the Cat's,pity they didn't do a complete redesign and strengthen the undercarrage of those Fiat allis's as operator wise they were better than the Cat's,my opinion anyway.

@cbmech2563

2 жыл бұрын

@@RJ1999x hahaha we had a brand new HD41 and a brand new D9g on the job ripping shot basalt rock. The only thing the 41 could do enough better to be worth taking about was push scrapers. With the then new parallelogram ripper the 9 would out rip it. After 4 months on the job the 9 had 10% grouser wear, the 41 had 40% and ripped a track link and dropped a track in 2 feet of mud

@RJ1999x

2 жыл бұрын

@@cbmech2563 I call BS.

Learn something new every time I watch one of your videos. thanks for the information and education. 👍

Thanks for another great video, especially explaining something many of us have wondered about, and ran. I agree, they are less stable on slopes for sure, and we were told the high track improved turning, but I'm still not convinced. On hard ground I think they ride somewhat worse, not that any do great! LOL 👍

You are exactly right about increasing final drive life. I always was told that inept operators were a major cause of failure, when instead of lowering the moldboard and pushing, they would ram an object at high speed.

I’ve actually wondered this before. Thanks for sharing. Everything is a give and take. It stands to reason they tried that on the bigger tractors that experience more stress in general. I’m guessing the weak link was the main drive sprocket in certain situations. It’s incredible how much engineering and trial and error has went into these machines. 🤩💪👍❤️🇺🇸

Thanks for sharing and comparing Clint, hope your son gets more vocal in your videos, so great your family works together!!

Been so long since KZread taught me something. Thanks brother. Very informative. I never even thought about it until today.

Not being an official equipment guy, this is something I've always wondered. Thanks

Thanks for explaining that to me I remember seeing the high tracks come out in the 80's but never known why.i heard better on slops don't know anything about them never operated a doser .but always look at them and wish I could .I'll put it on my bucket list.😁keep up the great work and video's 👍👌😎✌️🇺🇲

Enjoyed hearing the pros & cons. We had a D4 high track with LGP tracks and loved it more than our D5 straight tracks. We were in mud a lot and the high track was so much easier to clean out & service and the LGP tracks enabled us to work in places regular tracks would fall through but the D4 would out push the D5 on flat, level ground. It's a trade out with devoted fans of each type but I'd rather have a high track hands down.

I am new to owning and operating equipment. Thanks for the info. I have had my ups and downs for sure. My low point was when I laid my dozer over on it's side. I did not get hurt wear your seat belts! Dozer was not hurt. Thank god I have a friend with a D 6 and could get to my location and flip the D 3c over. I ended up having him cut my house pad with his d 6 and he ended up having to bring his excavator over to finish.

Thank You for explaining this. Cost v benefit is a constant struggle.

Yet another technology with so much detail most folks will never even think about. Thanks for letting us get a glimpse into your world!

Professor Clint, excellent presentation in dozer studies.

I have always wondered why, thanks for the video.

I always thought it was for better ground clearance between the ground and the belly, the reason for the high track. Probably several reasons for that design. Thanks for sharing.

@C_CEQUIPMENT

2 жыл бұрын

Yep

thank you for making this, ive actually always wondered about this.

Keep them coming we enjoy thanks

Back in the 90's i had a job working with a crew installing fiber optic lines. They had a D4 high track which I was using for backfilling. I liked the elevated view you got and it seemed to do better in the this weeds and brush.

Hi from uk guys👍👋 thanks for this information advice side always good to know for people like myself great to understand from a professional side never knew they had planetary system 👍 thanks for time explaining this man be safe and see you soon👍👋

I have operated a D6T in snow and the high track got around better than a straight track did. It pushed snow well also, I haven't done a lot of dirt work though. So I have no comparison. Thanks for explanation

Thanks for the information. I have often wondered why.....now I know. Best wishes.

Very informative, Clint. Thanks for sharing.

Very nice-looking yard there, sir! Always great to have an organized, clean area for equipment and daily movements! Thanks! Best 2U!

@C_CEQUIPMENT

2 жыл бұрын

Thanks

I was working for a Cat dealer in the 80s. For what it's worth; When the D10 was first released it was the first high drive.

those reduction hubs are awesome , though you will have less travel speed you will have a greater amount of torque , it makes it easier on the transmission , clutch and drive train gear . i think in the conventional way the reduction hub wouldnt work well so that to me is another reason to make it a high drive , it also gives more ground clearance

The high track was initially a joint project with komatsu. I've seen pictures of their pro-type they had at the time. One additional advantage of the high track was it got the final drive out of the soup if you were prone to working in that environment so it did help some on maintaining cost although like you said it did end up placing and additional idle down in the soup which would eventually get it seals pushed out by mud and dry and take out those seals and bearings but idler as Cat would point out are way cheaper than final drives. Komatsu in the end decided that the benefits and gins didn't put weigh the extra component cost and with some design ch he's they made at the time went another direction. They gambled on lot of their dozers being used for push cats on scrapers or pulling large pans or even pulling cable plows for fiber optic. In those environment the high track and it's added maintenance was not optimal. However the mines and a few other places they proved to be better. (I used to work for both Komatsu and Cat before 2001.) It doesn't make me an expert but I have seen my fair share of undercarriage work in last several decades

@kevinbridle1831

2 жыл бұрын

Komatsu had nothing to do with it, CAT patented the design in 1973, building a test bed D9 to prove the concept. The hi track version D10 was the first machine into volume production, this morphed into the D10N which improved traction with longer tracks, the mighty D11 has been the production tractor of note since its introduction. The patent has now run out and Liebherr has built a Hi Drive tractor but the vast majority are still CAT machines. I think there is a certain amount of national pride that Komatsu would not copy a Iconic American design unless there was overwhelming performance(profit) advantages.

@joegelencser2571

2 жыл бұрын

Bullshit Komatsu didn't do nothing ever but copy what somebody else has already made they make garbage get your head out of your ass before you start bullshing the people

@joegelencser2571

2 жыл бұрын

Bullshit Alice charmer experimented with high drive years before that get your head out your ass God-bless everyone

@cbmech2563

2 жыл бұрын

I worked for Peter Kewitt in 71 ( Kewitt did a lot of experimental work for Cat at that time)and we had an x10 on the job and it was actually almost as big as the first D11. But they had a real problem with transmission failures. They ended up downsizing to the first D10. We were also told that the original reason for the high track was to keep the finals out of the trash when working in a landfill. Wire and strapping have a nasty way of getting past any guards you put on the finals. I've replaced a few for that reason. I worked for a trash company that operated a landfill and we had a D8H and then got a D8R. We never lost a final seal on the high track.

@mikesanders6351

2 жыл бұрын

@@kevinbridle1831 From what I can see patenting something in the US has very little, if anything, to do with who came up with the idea. Your patent office doesn't do any research into prior art, it just rubber stamps the application. In fact, if you have a look at about 0:43 in this video kzread.info/dash/bejne/k2SMypuNf8rYo8Y.html you can see a Cletrac with a high level drive, much earlier than 1973 - so we can probably assume that Cat did not invent the high drive, rather that they chose to patent someone else's prior design and implementation.

Thanks Clint for the information

A great little video, thanks for the information Clint .

Thanks Clint. As a dozer want to own guy I am always wondering why things were done a certain way.

Your exactly right on the reason why they also claim it causes more surface contact on the tracks if the drive gear is on the bottom it would be a little shorter at least that’s what I’ve read great explanation buddy thanks for sharing

THANKS for the educational video, I really appreciate you doing videos

Also notice the track extends out the back of the dozer, you can't do that with a low track. This makes the track on the ground much longer making lower ground pressure and improving traction. In my opinion High tracks are better in every way.

@gereatricfolk479

2 жыл бұрын

Actually the D6 CAT and the DEERE 850K have the same number of links 46 so the CAT has less links on the ground.

Thanks for giving your informed information on this topic, been digging around and there seems to be so many different opinions globally.

They did make a D4H for a while too, nice “lil” dozer… good visibility but slope dozing was a bit sketch 😬

Thanks for sharing this information Clint enjoyed watching this video 🇺🇲

Thank's Clint I love my Dozer's I just lurned more about the reason I know the high Trac is easier to clean 👍

Thank you Clint. I had heard many different ideas of why they do this. Thank you for sharing what you know.

@matta3888

2 жыл бұрын

I have never thought about the reason for this.

Wondered why - now it makes sense. Thanks.

Thanks for sharing your knowledge with us. Greatly appreciated. Has anyone asked what difference between steel and rubber tracks. You touched on this a little bit on one of your auction videos.

@C_CEQUIPMENT

2 жыл бұрын

Rubber is more for city type work when driving on blacktop or concrete

@jaquigreenlees

2 жыл бұрын

@@C_CEQUIPMENT In the vids of the first Hyundai loaner DP had there is one that shows the biggest issue of rubber, the lack of traction on soil / grass. The tracks spinning on wet grass and the machine just sitting there.

Thanks for the explanation. Wondered why the two styles & now I know. Not that me as a retired fishing tackle shop owner needs to know. 😁

@lastguy8613

2 жыл бұрын

Hey I'm the same, as a painter and plasterer I have no reason to be fascinated by these excellent heavy equipment channels. Tho I did point out to the driver of a dinky little digger on a job site recently that his grease fittings didn't look like they'd been greased in a while.. He agreed and greased them. KZread makes everyone a expert lol

Thanks Clinton, The sharing of information is good but you know what's great? Your sons want to hang out with Dad and that says a lot!

I been going by y’all’s place for years lol I watched y’all move in actually👍 we have a lake house up the road on lake lemon, so I go by a lot in the summer, i run dozers and excavators for a company in my home town north Vernon, ya did a great job explaining that 👌👍👍 best of luck this season guys 👊

@C_CEQUIPMENT

2 жыл бұрын

Thanks

Yes you did answer my questions on why a "high track".

Thanks for taking a few minutes to explain why along with pros and cons.

Thanks Clint. I always wanted to ask that question on other channels, but didn't want to sound stupid haha. Always interested in equipment but never operated myself. So this education is awesome.

@C_CEQUIPMENT

2 жыл бұрын

No questions are stupid in my book😁

International Harvestor was actually one of the first to use planetary final drives and modular design, on their TD-20 E dozers. Later on Komatsu bought out Dresser to copy that original final drive/track piviot that IH had pioneered. They incorporated that design into their EX and PX dozer line. Also lets give Euclid/Texex some credit as they had planetary finals way back then.

@C_CEQUIPMENT

2 жыл бұрын

Yep

@gereatricfolk479

2 жыл бұрын

But they also had this crazy way of holding the rear pivot shaft onto the machine.

I was always told the standard track was better for the usual work and more stable on slopes and I high track was more for flat ground rough terrain heavy pushing. So we always had them out where it was rocky or in or scrap yard and dump or where we hit lots of stumps. If it wasn't a rough job we almost always had standard tracks. This was just what I was told. I'm a trackhoe/ wheel loader track loader operator. Only run a dozer a handful of times so I could have been told wrong

Thanks for the explanation, Clint.

Thanks for the info Clint.

Interesting. I'd always heard it was to keep the final drive out of abrasive mud.

@jackrichards1863

2 жыл бұрын

It is. That D5 is a Komatsu too . HGC high tracks are high ground clearance.

@joegelencser2571

2 жыл бұрын

@@jackrichards1863 The kamatsu was never even in any class nowhere's near the Caterpillar kamatsu is pure garbage

@njonebale7889

2 жыл бұрын

@@joegelencser2571 not anymore, they push a lot

@joegelencser2571

2 жыл бұрын

@@njonebale7889 They push a lot of money out of the United States God-bless everyone

@Hoaxer51

2 жыл бұрын

@@joegelencser2571,👍🇺🇸

Hi all, i used to repair Cat tractors of both track design and i can say that when the HI-Drive system came in it made maintenance expensive. Track wear increased rapidly particularly on the smaller machines, ie D6, D7 etc.with the adjustment Cannon snapping in half due to a stretched chain. The bigger machines gave problems like endless trunnion cap bolts breaking off at the back idler and increased sprocket segment wear but the biggest issue was with D9 D10 etc just being too heavy and getting stuck in soft ground something we never had with D9H OR G Tractors with flat tracks.

@gereatricfolk479

2 жыл бұрын

Absolutely right Paul, apparently you have seen a few track recoil assemblies that were broken and had full tension on the track.

nice video. Cant say for myself about the oval undercarriage lasting longer than high drive. i have a cat d9 on over 100 acres ive had it for about 2 years and ever since ive made a lot of friends who have operated bulldozers for years and decades. they have given me a lot of guidance and knowledge about bulldozers and bulldozing. just from their experience oval undercarriage has needed replacing more than high drive and its probably the fact that the final drive is receiving more shock loads from the ground. like i said cant speak from personal experience even though i have operated a handful of dozers ever since i bought my d9..

Thank you so much for explaining.

Thank you for explaining this gear run drive You by all the years of having to take these apart, are the expert. I noticed on a lot of Logging shovels ( The Loggers call all there log loading excavator SHOVELS) loggers have TERMS for there machines that are different, it's really today a modified Excavator in my Humble opinion, They raised the track area were it runs over the mid top of tracks, my guess is to run all the brush/ tree limbs off. Speaking of working on side inclines, the Case/ Drott excavator back when the two companies made the same excavator, just a few options that different like GMC & Chevy pick ups, made the Hydraulic cylinder to level car body ( house ) straight. Digging on side slope, the 30 year Engineer from Case explained to me at Con- Expo in Vegas, as we looked at there history pictures at booth, the pro and con, linkage getting sloppy on cylinders having a house that did not stay straight. The con on that level type of set up. It was a great idea for NEW tight pins, after heavy use it was real loss. I notice on the rebranding of CATS new small Dozer line up. They renumber all there small dozer's. They went back to straight drive tracks, are they better now. On gears. Did not know about the top heavy issues Don't drive those high tracks on slope, so what I hear from you the expert gives me feedback, on issues. Thank you again for the explanation on the high track system that CAT built, to keep longevity into that important Drive sprocket.

@C_CEQUIPMENT

2 жыл бұрын

The local contractors loved the tilt top case excavators for beating rock in a ditch with hoe ram because they could tilt it

Cool! Thanks for that explanation!

When I was in school we discussed an advantage of the high track was when it need to get pulled from the deep mud it was easier to pull the sun gear when it wasn't buried as far

Thanks for the breakdown of difference. Who cares what folks prefer. Depends on their use and needs.

Thanks, answered my questions!

thanks for sharing the video on the caterpillar with the high drive sprockets do they wear better than the lower drive styles simply because they're not down in the dirt as much plus there's not as much contact surface?

The older cat dozers were very primitive. The track Frame was mounted to the final drive and the life of the finals was very short due at the shock load. The high drive was their way of isolating the finals. On a John Deere the finals are isolated from the track frame so even though it's a low track you get long life from the finals. I worked many years in a Deere dealership and have seen 850 dozers go incredble numbers of hours on the power train without overhaul.

Very nice educational video Even though I don't drive one but I like listening to stuff like this and I love big machines not that it's a big machine but I like your videos it doesn't matter what you talk about your videos are pretty good.

Cheers I'd always wondered, great vid .

Very cool to read comments and get a glimpse into a realm i know little about. Thanks. Learned more about this kind of equipment in the last 15 mins than the 1st 61 years of my life. And at least begin to grasp what a planetary gear does.

@C_CEQUIPMENT

2 жыл бұрын

Great

That was good to know. thanks for the info.

Nice explanation ,thanks. As always “great video “.

My favorite quality of high track is visibility. Main reason cat switched was reducing component wear. Maybe undercarriage wears quicker. But final drives sprockets and track wears significantly less. So probably fair trade out IF undercarriage wear is greater. That hasn't been my experience tho.

@cg8469

2 жыл бұрын

I think anybody who has done any amount of heavy equipment maintenance/repair would much rather deal with undercarriage repair than final drives. Lord knows that's my opinion at least.

I currently run a D6T high drive. I've run them all since I'm 60. I prefer differential steer over dead stick steer too. Thanks

It is also very good for a ripper tractor the load that is pulling down is not on the sprocket but the idler. There was a highly modified D9 prototype first the production tractor was the D10. Thanks for the video

@C_CEQUIPMENT

2 жыл бұрын

Thanks for watching

i love the high track in logging ,,,the 5 was ok but the 527 ..thing would go any where great on steep ground

Makes sense to me. Thanks for explanation

I was under the impression that by raising the drive sprockets, you placed the engine, transmission and final drive inline with each other, eliminating the need for the lower gearbox. It kind of made sense at the time, but now I am not so sure. I hear operators like JayPayDirt saying they don’t use the high sprockets because of premature track wear. Something about the geometry of the third bend vs the standard two bends adds wear and tear. But I suppose it depends on the environment you’re working in. Flat even terrain would favor standard tracks. Rough, extreme duty like mines, quarries and pits would favor the high sprocket design

@peterclark6290

2 жыл бұрын

No extra bending, the track does a 360 every rotation. The end sprockets do a little less which is taken up by the high sprocket.

@gereatricfolk479

2 жыл бұрын

On the standard track you have the links contacting the front idler and rotating to make it's way around, 1st rotating of link. Then it contacts the sprocket and makes the 2nd rotating of the link. On a high drive you have to add one more idler and you get a 3rd rotating of the link. Then on a high drive you need to factor in the long expanse of the chain from the sprocket to the front idler and you get chain slap that causes scalping of the front idler. This is also found on the rear idler when you go into reverse. If you want to see this in person just look at a high drive with SYSTEM 1 and the front idler will look like a wash board.

On a conventional track at times only the front idler or the sprocket is on track that touches the ground. So there can be a lot of high load situations where only one grouser and one link is highly loaded. On the high track, there are bogeys with one bogey roller and one idler linked together and pivot together. In the worst load condition two or three grousers and links are between the roller and idler in the high load zone. That also made it possible to use D9 links on the D10 track.

I suspect that the faster wear on the track components on the high track version is related to the drive sprocket engagement area. On the "traditional" model, you have ~180 degrees of track contact, so the motive force is spread over multiple links. On the high track it looks like only 1-2 track links get ever engaged to the sprocket.

@C_CEQUIPMENT

2 жыл бұрын

Yep

@Gettindirty187

2 жыл бұрын

That’s what I was always worried about.

@FishFind3000

2 жыл бұрын

That’s what jpaydirt said

@todd727300

2 жыл бұрын

Not exactly true. Only the first couple of teeth on either system are actually pulling hard. That's just a function of how any chain system works. One thing that is true though, is that on the high track, the track has to move through more than 180 degrees, which does cause more wear in the pins and bushings.

@Farmall450

2 жыл бұрын

@@todd727300 I get what you're saying but in both cases it goes through 360 degrees.

I know a high track seems to grade easier. I ran a d5 lgp flat recently. It was hard to not get woop t do's. I also heard high track puts more traction to the ground. Ty for sharing this.

@robbiejackson5282

2 жыл бұрын

High tracks are set at an angle so they dig down under a load.

Great explanation as always. If you’ve not already, can you please do a bit about 360 digger main gear wear?

@C_CEQUIPMENT

2 жыл бұрын

Yea Maybe one day we will tear into one

Thanks Clint great explanation and video I learned something today…lol…

Good info and video Clint.

Learned something else, which made this interesting. Thanks