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Hoist installation
All
Hoping to install a two post hoist in the new year. It will be installed on a slab that I have no idea about. Has anyone else done this and if so, how can I be sure the concrete is up to the task. I have considered cutting through the slab for the two bases and digging for some decent footings, tie in to existing slab and maybe even inset a bolt plate before pouring the boxes. Might sound like overkill but there must be a fair load at the base of the posts when lifting cars. Thoughts? Geof |
drill a couple of test holes to see what the depth of concrete you have
if you have under 100mm of concrete do as you said above cut the cocrete & pour a decent footing if 100mm or more drill your holes for the base & chemset your bolts in set your hoist up level & lock it down & there you go have fun ROB |
the recommended min concrete is 200 mm from memory otherwise do as you suggested
Rog |
Don't know about mm but 5 1/2 inches thick is recommended with no cracks in concrete within 3 or 4 feet of where posts will go. Shim level and bolt down. I leaned post out 1/2 inch at top on my install, just because.
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What about a 2-post unit like this one that is designed for concrete that is in less than ideal condition?
Torin Two Post Car/Truck Lift — 4 Ton Capacity, 137in.W x 144in.H, Model# QJY240B | Two-Post Lifts| Northern Tool + Equipment |
IMHO.....If I was doing it, for peace of mind I would sawcut the slab around 18-24" square and dig a footing aprox 18" deep. Then pour it back and embed your anchor bolts with a template to match your lift base. But that's just me.....I like peace of mind.
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Goeff I did one of these in 2011 and have been really pleased with the result. It makes work on the car so easy.
http://www.clubcobra.com/forums/aust...eviews-us.html My slab was all concrete with no filler and quite thick enough. More than needed really. I used a large impact drill set that I have to make the holes. I also sent lots of time measuring ... Just be sure you don't hit the reinforcing rods. That can twist you, instead of the drill bit! The MaxJax has a quite large base and spreads the load well. The anchor bolts are most impressive and I couldn't find any bad reports on them. I have had a quite a few cars up on the hoist with no problems. 150mm is fine. The agent is in Tingalpa and is very helpful. They have a large base in the US as well. |
Bernica, I am indeed tending towards that solution. Maybe regardless of the concrete thickness. I doubt very much it would be more than 4" so this would be the only option. I'll drill it first and if it is 6" or more, I will consider both options.
Merv, the MaxJax sure does look the goods in restricted areas, but I am hoping to have the option to go for a clear floor two poster. Plenty of height to walk around underneath. Geof |
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I know this discussion is regarding two post - but if you have not made a financial commitment consider the Tuff lift four post.
It is movable, very stable and well made. I think they are near $3000. I have had mine for over 5 years. Bernie. |
Four post option
Bernie
I have considered the four post but like how easy it is to remove wheels, access suspension, etc with the two post. With a new project just starting, I can see great tracts of time with no wheels and no suspension. For storage, four is definitely the way to go. I might end up with one of each yet! Geof |
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