Thanks. That is actually me. LOL
I understand what you are saying about getting it right, especially working from a clean slate. I am starting to think that some sort sloped approach might help you. If you recess the posts and deck into the floor, you could never park a car underneath.
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I didnt think of the parking issue. If I kept the depth to two inches and ramped it front and rear, it would probably work ok.
But moving a parked car twice daily over humps would be a bigger PITA than the bimonthly service job per vehicle. Only one vehicle is stupid low.
Is the lift for storage or work ? If it's for work I'd go 2 post with a clear floor. If it's for storage and you don't have room for a long enough ramp, I'd fab a removable ramp. There are way too many negatives having a drop down in your floor.
I couldnt see the negatives to a drop down. That's why I posted the thread to be ridiculed. Please be specific. Concrete costs more than internet server space.
Who said anything about a two post? I find the things unnecessarily dangerous feeling. The only one I worked under was a Chinese mfg which flexed EVERYWHERE at once. A four post can be used for storage and service work. Most importantly, to me anyway, it is idiot proof to hit the lifting points. There's no hands and knees squinting under the car.
