Block and Tackle Pulley System for Lifting Objects - SoB 4000LB Breaking Strength with 65 Feet of 3/8" Rope - 7:1 Lifting Power - Heavy Duty Rope Hoist Pulley System for Garage Warehouse Construction

price is good ease of operation a real page turner

I got this to lift a/c units up into a ceiling. Light lifts and short distances. Worked like a charm. Runs smooth. Didn't tangle. I used a cleat to hold the rope while I was working.Will it lift 4000 lbs? Maybe, but not without a winch to pull the rope. What could I hook it to that will hold 2 tons plus a safety factory of 2? Dragging something I might give a try. That brings me to why I replaced the rope.For the price I would buy again.A 3/8" twisted nylon rope is plenty strong but nylon stretches a lot. If I have 4000 lbs of tension on it what I've made is a giant slingshot. If something breaks there will be parts flying about. I put a 3/8" by 100' Dacron climbing rope on it. The Dacron rope doesn't stretch and recoil the way nylon does and I got some more lift length. The rope did cost as much as the pulley system but safety first.

I was using an LVL as a subfascia for a porch and working by myself. The LVL was 9" wide and 25 feet long and so pretty hard to manage on my own. I installed the block and tackle on my house and pulled one end up to a ledge at the approximate subfascia height and secured it. I moved the block and tackle to the other end of the porch and pulled up the other end of LVL into approximate location. I left the block and tackle in place so I could lift or lower the LVL as necessary while I nailed it off to my rafters.It worked really well overall and though it seemed like the ropes might get tangled they never did. I was raising the LVL about 16' off the ground which was the very limit of the block and tackle. I guess if you needed to raise some higher than that you'd either have to move the block and tackle higher or replace the existing rope with a longer one.I'm not sure if I'll ever need to use it again but at $32.69 it was totally worth it even for a single use.

I got this to replace a 2-pulley system which I’d used to raise and lower a 350 lb. foldable utility trailer. When using the 2-pulley system , I was fraught with anxiety due to how very hard I had to pull to get the trailer raised. This 4-pulley system allows me to much more easily raise and lower the trailer, reducing both the physical and mental stress on me.The issue of the rope twisting was easily remedied by taking my time running it through my gloved hands a number of times, until it stopped untwisting. I did this with the block & tackle mounted at the ceiling, with the two blocks up against one another. It will now hang with the lower block pulled all the way down without twisting, unlike before I untwisted the rope. Hope this helps.

The following modifications are from a fellow purchaser. I followed them as well as painted the parts while I had them apart with automotive primer followed by automotive enamel. Now this system is comparable to something costing hundreds for use lifting our dingy on to our sailboat. Seriously works as well as a stainless unit costing 800.00.1. Replace the rope with a less-stretchy, less twisty rope. I bought a 70' length of 1/4" "starter cord".( I used braided nylon sailing cord 100 ft and cut it in half for the two units I bought)2. Replace all the regular nuts with nylon locking nuts. You'll need an additional 6 of them if I recall correctly (they are metric, 8mm)3. Sand the outer edges of the pulleys to make them smoother for less friction.4. Add an 8mm washer to each side of each pulley and each spacer. You'll need 48 8mm washers to do this. This is really important, since it greatly reduces friction on the pulleys. ( worked better for me not to add washers to the spacers, but for sure need them on the pulleys)5. To accomodate the extra width caused by inserting the washers, you'll need to replace the 3 bolts in each block with 8mm bolts that are 90mm long. So you'll need 6 8mm x 90mm hex bolts to do this. ( or can use 3.5 in hex bolts )6. Use silicone lubricant to lubricate the pulleys and their washers.7. Tie the end of the rope to the bottom of the upper block to get an 8:1 advantage instead of just 7:1.IMPORTANT NOTES:(1) If you get the model where there are 2 dimples on each sheave plate, you must orient the pulleys so the side with the smaller hub is facing the dimples.. ( not sure about this because it didn’t seem to matter )(2) Don't over-tighten the lock nut on the two pulley bolts, or you'll squeeze the pulleys between the sheave plates, causing unacceptable friction.This is sooooooo important!!!!