I’ve never seen a 657 in person but I’ve ran plenty of 8’s in my time and too see it get dwarfed by that scraper truly brings into perspective how big they really are
A friend has a bunch of these and we're shooting the breeze , one of those empty is 275 k lbs empty , loaded 350 k gross that summer cal construction season we moved near 10 million yards , 18- 57's / 20 - 31's 4-D8s 4-d10s ...
Dad worked at Decatur on the tractor line. (That's the front part) He was an assembler first, then a "G" adjuster, ended up as an inspector. 32 years at retirement. He pretty much knew every nut and bolt on the models built before '86. Those were the machinery that were used to build the interstate system. Think about the amount of dirt moved in THAT project.
The D8 is a bit small to push the 657 but it's a downhill push and only one 657 was running. So it would have been pretty uneconomical to devote a D10 to it
Does anybody watch Gold Rush on the Discovery channel I think Parker has a d11 and I think Tony also has the d11 and oh my God when they do close-ups of those they're just huge.p
I've been around large mining equipment, all my life . I was around everything except ,"PANS," as we call them. Watching 657s on video , doesn't do them justice . These things are huge.
Cat has made a scraper bigger than a 657. They built a 666 in the late 60's early 70's. They were a 660 with a D343 added to the rear. They ran a 346 in the front. 9sp torque divider front trans, 3sp rear. I spent a couple years working on them in the early 80's. The 666 also had the fastest ground speed of any Cat machine.
The reason they were fast is because Cat made them run 45 mph @ governed speed. D346 and D343 were overhead cam engines, which meant that overspeed would result in cam boxes lifted and heads busted to hell, sooo, They went as fast as they went...to try add a little speed going down hill would result in a catastrophic engine failure. 40 years experience with Caterpillar.
@@gbarnewall1 Yep , there was , Peterson I think made it. LT 360 would be the biggest scraper made, triple bowl, 360 yds, google it if U want to see a big scraper.
I know of 2 bosses that if they seen that scraper leaving the cut without dirt falling off the sides and running over ,you would be sent home and not return,waste of fuel and capacity.
Like I first thought until I realised they were only cutting out a specific area which is why they were not hooking multiple scrapers together or the dozer deep ripping.
I think in this situation the 657 using the dual engines with a push from the D8T was just enough. It looks like they were cutting a road, unless that was a waterway with all the rock stockpiled on it. It is amazing how 1 machine with a GPS can cut grade without a grade checker watching. In fact when the dozer made that pass with the dozer blade down he was checking the grade with the GPS. It looked like it was to grade cus he didn't do anything else.
Great video but so many reactionary uninformed comments about how "inefficient" this operation is (poster already stated that a larger push tractor would have been more optimal), and how this scraper is "useless because it needs a push tractor". The commenters could have spent two minutes searching the web for why push cats are used, and saved embarrassing themselves with their comments. It's ok to be ignorant, but it's not ok to be stupid
Videos from 'Awesome Eathmovers' r always awesome, and the d8 guy is a 'smooth operator' what I don't get however is why with the scraper's front & rear engines, it still has to be helped all the time.
Rose Enninful They can self load but a dozer makes the process so much quicker. You can also get the dirt heaped in the box with the extra push from a dozer. You can see in this video that the dozer is also ripping the dirt to make it easier on the scraper as the material they are moving is almost like rock.
@Casas Inspiradoras Yes it has traction. AE explained it above. Making money in earth moving is about production rate amongst other things. Using a push cat increases the production rate. The scraper certainly can self-load but it would be slower than shown here. If the push cat was a D11, the scraper would load in half the time
Cool footage, but I would have liked it a lot more without that ultra wide-angle lens. I don't understand the reason so many people prefer an extremely distorted image in their photography nowadays. You could get the same shot with a normal lens by positioning the camera farther away.
660 and 666 have been out of production for many years. The 657 is the largest in current production at 44 yards heaped but the 660/666 are the largest that Cat made at 54 yards heaped. Cat do make a coal bowl 657 which is larger than the 660/666 at 73 yards heaped but that's a different application than dirt. 657 runs 600/440hp whereas the 660/666B ran up to 550/400hp
I love them...we stripped the gypsum mines in fort Dodge Iowa with them..pull to the edge start going over and bury the pan is your only brakes... Watched a slice of dirt roll up the back of the pan and thru the back window of the sceaper once...poor guy was filthy..
For sure! That extra yard or so, paid the bonus for the foremem. Blue hats one job, green hats another. Yellow hats too. One of my later jobs the foreman was a punk-ass kid (I was as well, then) who had never operated a 657 nor supervised them. As you might guess, it was a cluster f**k every day with that guy. We had six can on that job. After two weeks of crap we parked them about 10:00, lowered the bowls&shut engines down. Head man on that job rolls up&spouts the usual," get going or get fired". Our ace was production records that showed a sharp decline when wonder-boy started running the crew. Turns out he was fresh out of construction management school but not an operating engineer nor truck driver, nor crusher plant or lay down machine operator. He framed houses...one summer. He was also some kind of realitive to somebody important. It all worked out for us&we moved alot of dirt for them.
Look up the fuel capacity. Cat designs every machine to be capable to work a 12hr shift (if I remember right...it was 12 or 10 hrs.) on one full tank of fuel.
Why even use a scraper? Doesn't the cost of the diesel gas and the cost of the machine make it obsolete to dozer/dumptruck set up...which seems like it would be faster.......opinions??
Geo Thomas weight really means nothing it’s the load it can carry and the triple 6 has a heaped capacity of 54 yards and the 657 is 44 heaped.And the triple 6 has been out of production since late 1960’s I believe.
I rolled a paddlewheel scraper off a huge dogleg left dump pile in 1998. I don’t remember what model, 3404 in the rear and a 3408 in the front. Did about 10,000 in damage, mostly to the hydraulic pony motor that turned the paddlewheel. We bought three of them from Iraq before the war they were used to make hail roads to the oil wells, all stickers were in Arabic.
@@bobbydemondukes the question to start out with was kinda funky. Pretty open really.... could have just replied with "moving dirt" and that would have been an ok response.
@@gregtaylor8327 it's clear as water. It says right in the caption a 10 wouldn't be cost effective for one scraper. When you change oil in your vehicle do you change the oil and filter or replace the entire driveline?
i used to think they were big, tell i operated a komatsu 630E. you can haul a 657 in a 630E. also... how would it be to work in california tatter dirt? laughs, come to the rockies! think your dozer guy is an operator? come build a road out of rock where i am at. just an exppresion, have to import obviously.
you wouldnt, but the professionals that move dirt know you can fill the bowl faster pushing with a dozer vs just the scraper alone. That's also why two or three is better then you can push pull.
Matt is an armchair operator, never set in the seat of a piece of equipment probably. But like many others will give advice on how it should be done "professionally "
weak loading, push pulls should always operate in pairs, this doubles productivity and the dozer can be used at the fill, the driver didn't even fill the bowl, typical yanks.
CAT stupid auto correct. The triple 6's are massive machines and they can haul ass but standing next to the older 657's with the 3412's up front and 3408's in the back tripled up is an impressive sight. The new C series motors don't have the same power or sound especially with the after treatment exhausts.
Oh yes a good dozer operator flights back in reverse in 3rd gear..fn donkey brain.. not doing his body any good and certainly the running gear..an old experienced operator would take his time and more muck would have been shifted..