to answer the question about mechanical being cheaper than hydralic. Doubtful. Larger Corporation buys hydro cylinders and pumps from who knows where. On the cheap.
Machining a set of acme threads a gear box, forming the sides, they are formed, not welded for 3 inches out of flat bar stock.
Here is my grips with quick jack.
They used flat bar stock to make almost everything.
the hydraulics you can disconnect. But then you have to reconnect. If you ever done this with one that still is pressurized you will never get the ball open on the quick fittings, unless you have a mechanical advantage. I have a Tool I built to release the pressure when I find once. Small portable press that has a bolt that presses against the screw. Other day I was installing a loader at the farm, and did not have it with me. Used a big set of Channel Locks, that did the trick, also took a shower in Hydro.
Moving these around is a pain. 'No wheels on them except the small rollers on the front. They suck if you have to move them sideways, or in any direction really. Been thinking about making a set of caster wheels for the. design is so bad that I have my ideas, but figure that it will also add to the width, and make things just as bad. Been thinking about adding a slick pads under the lift, to allow it to slide, fear is then it might slide out from under the car.
Cross Bars are not there, but the bottom plate is, the hydro cylinder is. And it just feels so um crude by design.
EZcarlift
The drills can bring you down. I used to lift it with a 1/2" drill, slooooooooooowwwwwwww
Setup up tho the 3/8" 4000 RPM drill, and it is still slower than a hydro, but bearable. I can tear both lifts down, and move them both, EZCARlift wins that battle. And it is a very well designed. Simplicity at its finest. I would hav gotten two if it could lift the Pickups I need to service
Like all tool you can find bargains out there, but then you get the best in your hands you realize the investment was well worth the money. Don't get me wrong, I make do with a lot of stuff. When I find the quality tool, I grab it up. I have some tools that my wife has pitched because she said if I did not like them why should I give them to someone else. I tried to explain some people do not have the same exacting standards for tools. Now I just load them up and drop them off myself. I will toss a tool if I think it will kill somebody.
The clicker style jack sands I pitched all of them at the metal recycler. Had one fail, and figured if it failed on me, it could the next poor soul, so into the pile they went. If someone pulled them out and used them, that is on them. When you placing stuff several 1000 pounds above any of you body parts you really want to make sure it stays in the location you have it in. I would rather see a stack of glue and screwed 2x4 that a cinder block improperly oriented, or even a cheap jack stand.
I would love to have an EZcarlift that lifts higher than 26" for my smaller stuff. Thinking zero turn commercial mowers, Ventracs and Steiner type stuff. Smaller tractors I would like to get up in the air and work on. Be able to move around the shop if I need to open up a bay etc.....
Enjoy the lift you choose, they all have their advantages. And you life changes once you have one.