That old jack...it could have been passed down through generation after generation, it was on its journey to fulfill its destiny when fate brought it to CHP and that, as the records show, was the end of the line. Life cut short for our entertainment. I am not sure how I feel about that.
No surprise at all that the old one did way better than any of the others, but if they had the contact surface loaded as it was designed, it would have held on way longer than it did.
Hydraulic jack- 2050-7947 Rhombic type jack-785-1643 Plastic jack-2005-4779 Old jack-2019-16630 Mechanical jack-2118-14004 Hydraulic jack on wheels-1268-1709
you need to do the MATH 2.2 KG to 1 Pound. 2000 Pounds to 1 ton. I'm thinking this math was off on the ratings. so his 2000 KG was close but not spot on it's 2000 KG is about 2.2 tons.
@@chuckholmes2075 the video says it's 16630 kg. Why did you need to convert it to pounds? I said the old jack is able to hold more than 10 tons and 16 tons is more than 10 tons. I didn't understand your point of wanting to correct me
By far my favorite test! This is an actual usable test for the safety of others. Thank you so much! (From a guy that has been under a lot of vehicles with many different types of jacks.)
I had a mechanical jack for years from on old Datsun. I used that for years. I didn't realize how it worked until you broke it and it looks like a differential inside with a ring and pinion gear set. Thanks for educating me.
Make sure you use jack stands under anything you plan on climbing under. And never use cement blocks, if anything use blocks of wood like 4x4’s or 6x6’s.
Or at the very least, make a block sit with the holes vertical! That's two sides and three webs holding the weight up, but only the three webs like on it's side. I just cringe when I see them sideways like that!!! There's more than one reason they sit in a foundation the way they are built. Plus making sure there aren't any stress points on concrete helps a lot, like a wood block under and above it. But yeah, still a very bad idea.
@rukamukus . . . it's good that you pointed out about not using cement blocks. While the blocks can be heavy, dropping them from a height of a meter or so onto pavement can result with them to fracture. Yet, YT has videos where people try to impress viewers on the power of a firearm with a bullet breaking a cement block apart; as the same can be done with a carpenter's hammer.
Excellent testing , the old stuff is definitely amazing I’m shocked at how good the threads on the plastic one were , if the body was thicker it would probably have done better
I feel like the old one would have done better if they'd shaved the top flat so that the pressure would have stayed even from the start. Having one side break off introduced some shear that caused early failure IMO, and yeah. the plastic one surprised me. I figured it'd be right down there with the scissor jack.
@@hdj81Vlimited Any idea what the model number is? I'd guess it was glass reinforced nylon - same stuff power tool makers use. Has similar strength to cast aluminum.
Ok, I must say I'm impressed by the plastic jack. I knew the sissor one was going to be first to fail, but surprised the plastic jack did better than the sheet metal floor jack.
@@rmr5740 Well, I wouldn't trust taking off a tire using a plastic jack. Lol. There is something to be said about steel. That said, I was simply impressed by it, still would never use it personally or buy it.
In an actual overload situation that plastic jack is by far the most dangerous since the housing is the first part to fail allowing the load to suddenly fall - That would kill.
@@Senkino5o I don't know. Those rhomboid ones are horrible and pathetic.. In a real situation definitely dangerous. Too close to failing under the weight of a normal car.
@@AnotherVexium Its roughly the same size as most 1350kg trolley jacks you can buy at most tool stores, just really cheaply constructed. I knew it wasn't a 2t jack its nowhere near big enough.
@@toolmanslaton4975 and what Toyota used if you know that huge car company my dad was a trainer or mechanic or some thing and they use that kind of pump jack I mean they use the huge hydraulic things to lift the entire car where you can walk under it but yeah they can hold up a big car like an SUV if used properly when I suspect is this guy didn’t use it properly instead of raising it slightly he left it all the way down much force into a port that’s not supposed to have that much force on it instead of going down through the joint where it has thicker metal and is designed to handle it
Given that the cheapest jack that was made out of plastic preformed that well was impressive. I'd probably go with the 60$ mechanical jack. Really tough.
What most people call plastic is really complicated compared to metals. It's a lot of variation in polymers structure. The wires made of these polymers can easily be orders of magnitude stronger then metals by weight and couple of times stronger by volume. The difficulty is to arrange the polymers to match the load when you have complex shapes.
@@georgeyoutube7580I think new jacks are all made in China and the manufactures are squeezed on cost. The plastics used here are not the carbon fibre in a Ferrari driver tub.
3:57 Nominal force test 4:52 Rhombic type jack 6:59 Plastic jack 8:14 Old jack (1970) 8:53 Mechanical jack 9:30 Hydraulic jack on wheels 10:15 Strength test
una lástima que haya destrozado el viejo gato no merecía ese final debio ser Restaurado a su gloria original y continuar sirviendo otros 500 años mas fue triste ver como lo destruiste..!!
If you'd used these much before you would know that there is no 2ton rated scissor jack, those things are good for lifting up an axle on a passenger car and nothing more.
@@prakhargahlot9373 you must not be lifting very high then, cause the point where it was in the video is how far it would be extended before it even makes contact on a lot of vehicles 🤦♂️
Of course that's going to make a difference turns out if you asked for a little physics you will find using a length of something as a support prop will support a much higher weight as opposed to using it as a lever support
In defense of the old jack, the wings were not ever intended to bear the weight. When they broke, the stress was no longer vertical and the jack failed quickly. Had the press been directed on the center of the jack, that thing would have probably have out lasted the press itself.
I am honestly surprised at the performance of the roller jack. I thought it would be for sure the best one. Well, I guess it's time to go out and buy one of those little mechanical jacks. That did surprisingly well, just shy of 14 times the maximum rated load.
That roll jack was a very sorry excuse for a roll jack if you ask me, it honestly behaves like it was made in china. My $20 American made roll jack has served me well for years now.
I have a 2 ton hydraulic jack on wheels like that orange one that I bought at autozone for $20 20 years ago when I was 18 years old. I used it for every oil change and brake job I did on my car and some of my friend's cars up until about 3 years ago when I replaced it. it still works and I keep it around as a backup in case it's needed. I also used that thing up on blocks to lift the front end of a ford F-250 once to get it up on stands. No doubt it would have done better than the one in this video. But the one in this video reminds me of the one I originally bought trying to replace my old jack about 10 years ago. That one had the hydraulics fail on it the 3rd time I used it trying to lift up my honda I had at the time and the store wouldn't take it back.
Seriously impressed by that red mechanical jack holding up to 7 times the rated value. The scissor jack and trolley should be investigated for not meeting the rated value, they were terrible.
I actually felt sorry for the old jack. At least it made a cool exit. Those things are hard to find, cause nobody wants to get rid of them. Some of those manufacturers should get sued. The ultimate breaking capacity should have a safety factor of at least 2.5 to 3.0 of its rated value. The scissor jack didn't even have half of its rated capacity. It would have been even less in its lowest configuration due to the geometry of the arms. Impressed with the plastic jack.
Yes, not designed to support the load on the ears of the head. As soon as one ear failed, the pressure was skewed out of alignment causing the main shaft to bend. Still not bad for a 50 year old jack.
Very interesting. Knew a scissor jack wouldn't be very strong, but looks like they're almost a waste of money. Same with the plastic one. Thanks for the video.
C'est mon test préféré ! C'est un véritable test utile pour la sécurité de tous. Merci beaucoup! (D'un mécanicien qui a passé son temps à utiliser de nombreux types de cric différents.)
I had my money on the old ratchet jack with the bottle jack in second. The one weak spot on the old jack is the cast iron “wings”. I was surprised that the floor jack couldn’t even make it’s stated lift weight let alone take 4 tons, which is the minimum safety margin for a lifting machine.
These Ys are for preventing the screw jack from snapping not for a load! Put any material strong enough to fill the gap then tighten it hard! And the scissors jack try with the hook past the ring so the bar is one half in your both hands, then apply more force. If the bar bends put something stronger in same manner! 800 is enough for most cars tyre job!
The 1970s jack I think would have went further before breaking only because the press couldn’t press directly down in the center like the frame if a car would and instead broke the ears off it.
I don’t think the green jack was properly cranked. You won’t get the proper leverage with the crossbar extension. You had to feed the curved bar into the loop further and crank it directly almost like a crowbar.
Basically, don't trust any jack made from pressed steel... it was also a little unfair on that cast iron jack in that it's designed to support an axle or a chassis rail, and not have the force transmitted onto the tops of that cradle casting. Once those broke off, it performed admirably.
Fantastic and useful test! Well, I guess (rather surprisingly to me) hydraulic and mechanical jacks turned out to be overall the best ones (though they all have applications and deisng purposes).
that fat red one is a wormgear jack. i have two different ones and they never stop amazing me how much they really can take. basically as long as you manage to turn the drive shaft it will manage to lift
This is an awesome test. I have each of these styles of jacks. Not only seeing when they fail but how they fail will have me remembering bout this test when I reach for a jack… good stuff.
the best part about the bottle jacks is even if they fail they still give you that little bit of room, which doesn't matter much if you have tires but can still help, especially without tires on. Might save your life.
When changing tyres/working with the wheel off slide the wheel under the body of the car near where your working, if everything fails the car will sit on it and give you some clearance to get out/breath.
@@paidwitness797 Ye I am aware of that. I was just thinking about if for some reason you had a wheel off and didn't have a wheel and was under the car. it would be an odd situation to get into but I have seen it lol
True enough but only under ideal conditions, table is flat and level, press comes down slowly and straight. Can't say I'd wanna do a road side tire change though, every car going by shakes yours and the jack gets side pressure, uneven ground. Lotta possible dangers in real world applications, but yes it was still impressive for a lab rat test.
@@Cheepchipsable Well maybe you would, have at it. My comment didn't have anything to do with vehicle size, I was referring to imperfections in ground and environment. Anybody who has changed a tire roadside knows that when another car passes by you the vehicle shakes, now compound that with an uneven ground and even a Miata could conceivably be heavy enough to cause jack failure. Similar to a crane or forklift with a load being lifted straight up they can do a bunch of weight measured in tons but put a little side strain and they collapse under pressures measured in thousands. You go on with it, I'll stick to something a little more durable.
Well if you need to do that, side of road, make sure you don't put any of your body extremities under the vehicle. Also watch out for those mirrors, if vehicle drops the wing mirror can hit you in the head!
Ну вообще то это должно быть подсудным делом, если написано 2т а домкрат ломается на 1600. И сажать производителей надо раньше, чем кого то раздавит машиной которую им поднимут.
It's frightening to see how little that trolley jack took for it to fail, I've been using them for years...😮 I think I'll invest in a decent hydraulic bottle jack from now on.
to be fair its rated for 2 tons (2000lbs or 907kg) ... he stressed it and logged it failing at 1709kg or 3767 lbs, realistically it was moving and bending before that but it handled more than 3 tons for a 2 ton jack. as long as you aren't dropping another car on the car you already have lifted you should be fine.
@@Crazy49er 2 tons is actually 2 metric tonnes or 4000kg or 8818lbs. He logged its fail at 1709kg or only 43% of its nominal capacity. Disgraceful. I have one of those cheap trolley jacks but it only ever use it to jack up a motorcyle while I get some blocks under it. I'd never use it on a car.
@@MrPoopnoddy OMG how are Americans failing this ship called conversion without a dingy to float on. 2 metric tons is just 2000kg. Metric just stands for the scale so that you do not confuse it with imperial ton which is about 2030kg or US ton. Thus 2 Metric tons is 2000kg and not the 4000kg you typed.
The only issue here with the testing is the thrombic ha k and trolley jack were tested at their weakest lifted height. Both jack gain exponentially higher resistance the higher the jack is lifted. Personally i prefer lift with a trolley high enough to pop it on an axle stand then switch to a bottle jack.
@@Tymopta thats not how their works though, The weight is multiplied by height and the strength is increased by the angle created by that height. You’re not lifting 2t when jacking a car up on one side, weight is transferred.
@@cloric1 Complete rubbish. It's nothing to do with "spread of weight", whatever you mean by that. Neither jack was able to support two a two ton load. All the others did it with a very considerable safety margin. It's entirely irrelevant whether they were tested at their weakest configuration or not. If they are rated to support two tons, without qualification, then they must do so, with a safety margin, in all stages of lift. If what you mean is that you can use one of those jacks to life the corner of a two ton vehicle to change a wheel then, maybe. But that's not what a load rating means. Perhaps you ought to ask yourself, if all the other jacks managed to support a two ton load with ease, then they are clearly a lot stronger and a lot safer. This is pathetic. If they cannot support 2 tons through their entire range, then they should be rated at what they can support, which on this evidence is less than 1 ton with virtually no safety margin.
My grandfather had three or four of those old screw house, jacks… When he used to work at the Roundhouse at the railroad station, he got them from work …,
@@donsmith9478 yes, but they're poorly designed for it even then. A stiff wind can shift the vehicle enough to make it tip/collapse. I had it happen with a scissor jack when I changed a tire on the side of a road. I carry a floor jack now because of that.
I'll take the plastic one over the last one any day. I was thinking that garage jack would be the winner ( the one most of us are guilty of using with no jack stand) but it was the worst one!
Ох ля, вот просто сижу и с большим интересом смотрю, да какой же нагрузки ты ромбическую механику на винте выкрутишь))) Под конец прям больно, но почти тонна, красава)
I still have the old jack, a little rusty on the outside but it still works. My grandfather was a war veteran, maybe he used to be a combat vehicle mechanic or something, or he maybe stole from the battalion garage. Idk 😆
Fyi, a socket and impact gun with the green jack makes for effortless up and down. Screw the metal handles. I use this jack all the time on the cars I work on in my driveway.
Just as a fyi 2000 lb is 1 ton. 4000 lb is 2 tons. The jacks were tested to 1/2 the stated capacity provided the measurement shown is pounds and not Kg. Also keep in mind the cast iron Jack is designed to support a car by the axel. It isn't designed to take load in that way.
@daveyjones I fully agree with you. It's all about mechanical advantage. Obviously a mechanical screw jack potentially will produce the highest load. When he tested the green rhombic jack he stopped halfway through the test then gave up easily. It would have produced more load with more effort. Plus it will produce greater load, the higher it's extended ! The law of the lever. Bear in mind almost every car has this type supplied for flat tyre replacement and only needs to provide about a quarter of the vehicle load- perfectly capable for any vehicle they're designed for.
scissor jacks was/are underrated. 20v impact and proper socket head/weld-adapt will lift a car or truck easily, and quicker than the rest, with less sweat, on a sweaty day. Throw away the death wand shepherds hook, and weld a bolt head on the end.
