82 - The Complete Miter Saw Workstation, страница 48
Rear Lifting Ropes 18:1 Mechanical Advantage. The Hoister's pre-assembled pulley system makes it easy to lift loads. Ever stand in your garage or basement, look at all your stuff, and wonder where you're going to put it all? The answer is, "Just look up." Home-storage solutions are moving off the floor, past the walls, and onto the ceilings of shops and garages. And with ceilings in the typical new garage averaging 11' high, that's a lot of space that could be put to good storage use. One popular lift system is the ProStor HeavyLift (in box on opposite page) and the other is the Harken Hoister. Block-and-Tackle. The Hoister features a block-and-tackle system of ropes and pulleys, like you see below. The photo may look a little intimidating at first glance, but don't worry. The system comes already assembled for you. All you have to do is follow the simple instructions. First, install the pigtail lag screws into the ceiling trusses or rafters. Then thread the ropes through the corresponding pulleys, as you can see in the photo on the right. You can plan on spending about two hours putting it together and fine-tuning it. Small, Yet Strong. The first thing you'll notice when you get the Hoister is how small it is. But, in this case, small doesn't mean cheaply made. The pulleys are about the same diameter of a quarter. And the ropes are skinnier than a No. 2 pencil. Yet this system is designed to raise and lower as much as 200 lbs. worth of stuff just by pulling a single rope. So, how can it be so strong? All the metal parts are made out of stainless steel. The pulleys turn on ball bearings for smooth operation. The hoisting rope is secured by a self-locking cleat that prevents the load from falling if the rope is acci- 1Pulley System M (see below) & Front Lifting Ropes ^^ ■ Eye Bolt Pulley System 3A Self-Locking Cleat with safety spring-activated cam Zero-Stretch Rope %" "Micro" Stainless Steel pulleys with ball bearings for smooth operation 48 ShopNotes No. 82 |
