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typical residential garage floors have a slope for drainage reasons. I'm betting it is enough to make this very unstable. I would love to have one but until I see one in person and can see how stable it is, I will let Polecat use one of his nine lives.
Since it appears to have the same stability as a tall glass of beer, when full, ... uh, there must be a good finish to this sentence. Use your imagination.
The Center of Mass (same as CG on Earth) isn't the center line of the vehicle. The vehicle and lift are one system. This video gives a better sense of how massive the post and foot really are. I mean massive in the literal sense...not visual sense. The screen capture below shows the foot extends beyond the center of the vehicle (good), but the actual CG of the of the system is skewed much farther to the right of this photo due to the mass of the pedestal and the foot. I'd say the CG is likely is somewhere on a vertical line passing through the passenger seat. It won't fall over.
The Center of Mass (same as CG on Earth) isn't the center line of the vehicle. The vehicle and lift are one system. This video gives a better sense of how massive the post and foot really are. I mean massive in the literal sense...not visual sense. The screen capture below shows the foot extends beyond the center of the vehicle (good), but the actual CG of the of the system is skewed much farther to the right of this photo due to the mass of the pedestal and the foot. I'd say the CG is likely is somewhere on a vertical line passing through the passenger seat. It won't fall over.
Quite right!
To "tip over" the centre of gravity would have to be outboard of the pivot point [the end of the support legs] and that by design is just not possible hence why I said earlier the Eiffel Tower is probably more likely to tip over than one of these things.
Assuming Jon's assessment of the CG is reasonable -now try to visualise the angle the thing would have to be for the CG to go beyond the pivot point assuming the CG is on top of the passenger seat say 2 metres above ground when hoisted and 1 metre from the pivot point- this implies an angle whose sine is 0.5 so the assembly would have to be on a surface of 30 degrees to tip [or so I reckon] - not too many garage floors at that angle of attack!/
The only way your 928 is going to tip over on one of these things is if you use those axle stands and forget to remove them when you lower the thing- then it might end up "**** up"- not a good idea in my opinion.
typical residential garage floors have a slope for drainage reasons. I'm betting it is enough to make this very unstable. I would love to have one but until I see one in person and can see how stable it is, I will let Polecat use one of his nine lives.
Sterling, It's very stable, and won't fall over. Victor Edgar, has one at VCB Engineering, and he and Jeff Spahn, used mine here in Vegas last year to install the supercharger in my 89. When I'm ready to lift any of my cars, I make sure to shake the car before I lift it more than a foot off the ground. When I built my big garage, I was only working on my motorcycle collection, and didn't plan for a lift in the garage. I have to leave my lift outside due to the fact that the column is to tall to pass under the header for the double door. So it sits on a 12" thick, concrete pad behind the gates.
Believe me, you would not be disappointed if you bought one. The portability of the lift is priceless.
FWIW, the center beam, allows me to pick up my Harleys too. It beats the mid rise lifts all to hell. I'm 6'1" and have plenty of room to walk under my lift. Some of the best money I've ever spent when I purchased it.
Im 6'2". Would i b able to walk underneath my 991.1 without bending over?
In a word, YES.
BTW, some of my sports cars are very low to the ground. I do have a set of wheel dollies, that I use to raise the car enough to position the cars so I'm able to slide the lift under, and place the lifting pads and adjust the arms. You can drive over the base, but I never have. It only takes a minute to use the dollies.
I like it a lot. While technically "portable", I'd not want to have to move it from where we live now to wherever we live in retirement. So I'll stick with my LiftBars, two low-profile floor jacks, and 6-ton jack stands until we move to the next place...Still in my early 50s, so I have not done all my time on the creeper yet.
I like it a lot. While technically "portable", I'd not want to have to move it from where we live now to wherever we live in retirement. So I'll stick with my LiftBars, two low-profile floor jacks, and 6-ton jack stands until we move to the next place...Still in my early 50s, so I have not done all my time on the creeper yet.
I spent to many hours laying on cold concrete, or a creeper. If I sold, I'd buy another, and leave this one here, or sell it to a neighbor. Lots of hot rodders in my neighborhood. Plus the next garage would have a taller door and ceiling, and be twice as large as the one I have now. I'm limited to 5 cars at home, at a time.
The Center of Mass (same as CG on Earth) isn't the center line of the vehicle. The vehicle and lift are one system. This video gives a better sense of how massive the post and foot really are. I mean massive in the literal sense...not visual sense. The screen capture below shows the foot extends beyond the center of the vehicle (good), but the actual CG of the of the system is skewed much farther to the right of this photo due to the mass of the pedestal and the foot. I'd say the CG is likely is somewhere on a vertical line passing through the passenger seat. It won't fall over.
I would be more concerned with the stability in the fore/aft direction, rather than side-to-side.
If you look at the overall footprint, the little side outrigger feet do not extend nearly as far outward.
So just from a strict "moment arm" standpoint, that direction seems more precarious....
03-27-2018, 10:01 AM
