I know you don’t want to anchor to the floor but it really seems the easiest to me. If you are worried about the break over point and synthetic line mount a roller like this
https://www.amazon.com/CNBTR-Groove-Caster-Industrial-Machines/dp/B01FJMEWE8/
That roller is a good idea, thanks for the link.
It might be exciting, but you can start the Fiat in first gear (hold the clutch pedal down) and just drive it in. When in doubt gas it!
I have considered this, but it'd have to be in reverse and I'd have to back it up the driveway after making a 90 degree turn from the street. But this is still a consideration.
After looking at what 20% grade is in degrees, I would have no problem using four 1/4" tapcons, to hold winch plate to pull my 3/4 ton van loaded full of tools. 12 degrees of slope is less than most trailer ramps.
Obviously anchoring to the floor is no sweat for ordinary concrete fasteners. But also, this is why I have a strong suspicion that despite everyone's comments here, the wall/slab interface of the back wall would also be more than strong enough to mount the winch. I've done the math. 20% grade (well, this may be a 25%...) pulling a rolling load, car tires on concrete, is 800 lb for a 2400 lb car.
Alternatively, you can pull the fuel pump relay or fuse and run it up the driveway on the starter. Less 'exciting'.
Interesting but irrelevant things about the Fiat engine and electronics make this impossible. Plus, I am pretty sure the starter is not nearly powerful enough to drive the car up my driveway in reverse. I don't want to ruin the starter trying to get the car into the garage.
Had to move a Torino, 3400 lbs, up the drive. a bench vice anchor plate with one 1/2 inxh bolt in the floor did the job
Yeah, thanks for that. No sweat, bolting to the floor is a known solution.
In case you guys haven't read this whole thread, and I'm sure most of you don't care, the purpose of putting a winch on the wall/slab interface is because for 99%+ of the uses, I am very confident this is more than strong enough and it's far and away the most useful mounting position for a winch. I rarely ever have need to pull anything up the driveway that's more than 400 lb on wheels, which is like a 100 lb load. The 2x6 sole plate in the wall is attached to the slab with concrete anchors so I am quite confident that if I put a plate against the wall with lags going straight into the sill plate that it will be more than strong enough to hold these 100 lb line loads. No doubt. If you think I am wrong about this, then you are probably considering a different question than this one.
So the question would be whether that sole plate can support a 800 lb lateral load. I think the answer is also yes, it can, but I am not 100% confident and the engineer in me would like to have some more solid data to support this before trying it, and I am not able to find this information one way or the other. Nobody yet on this thread has offered this information either, except just to tell me the obvious, which is that putting an anchor in the floor will support this load, which is an obvious answer to a question I didn't ever ask. If anyone here has an actual answer on what the maximum side load you can apply to a 2x6 sole plate anchored into the slab in typical residential construction manner, well that's the data I need.
TX building code:
Wood sole plates at all
exterior walls on monolithic slabs, wood sole plates of
braced wall panels at building interiors on monolithic slabs and all wood sill plates shall be anchored to the foundation with minimum 1/2-inch-
diameter (12.7 mm) anchor bolts spaced a maximum of 6 feet (1829 mm) on center or
approved anchors or anchor straps spaced as required to provide equivalent anchorage to 1/2-inch-
diameter (12.7 mm) anchor bolts. Bolts shall extend a minimum of 7 inches (178 mm) into
concrete or grouted cells of
concrete masonry units. The bolts shall be located in the middle third of the width of the plate. A nut and washer shall be tightened on each anchor bolt. There shall be a minimum of two bolts per plate section with one bolt located not more than 12 inches (305 mm) or less than seven bolt
diameters from each end of the plate section. Interior bearing wall sole plates on monolithic slab foundation that are not part of a
braced wall panel shall be positively anchored with
approved fasteners. Sill plates and sole plates shall be protected against decay and termites where required by Sections
R317 and
R318.
If my house was built to code, which I have no reason to believe it was not, then every 6 ft the garage wall sole plate is attached with 1/2" anchor bolts 7" deep into the concrete. Even without the specs, I know this will support a 100lb lateral load, the load that I would be putting on it with a winch mounted to it under my normal uses. I just have only about 1% doubt that it will support this 800 lb load for a few minutes this one time without deflecting too much and potentially causing (at worst) cracks in the drywall on the interior of the house (which is in a closet). I am not worried that this would rip the wall off of the slab. But you know, if they just decided not to actually anchor the sole plates, then I guess that's possible. Then I'd be shocked this 2-story 3k sqft house is still standing after 20 years if they built it that way.
So just to hedge, I am likely to just mount a temporary anchor in the floor and get a winch, temporarily anchor it to the floor for this ONE JOB, then mount it to the wall/slab permanently. And then if I ever have to pull a car up the driveway again, I can move the winch to the temporary anchor. But when I am just pulling my 400lb trailer up the driveway, I can use the far more convenient permanent mounting to the back wall. Seems like overkill, a lot of extra work, and unnecessary holes in the slab. But whatever.