A spring design manual, also called a rate book, gives tables that relate the torque constant ("rate") and maximum turns for springs of given wire size, diameter, and length. For example, a typical page in a rate book would show a table for a given wire size and inside diameter, the maximum inch-pounds (MIP) of torque available for a standard lifetime of 10,000 cycles in that size, the weight of the spring per linear inch, and the rates of the spring (as IPPT, inch-pounds per turn) for each of various lengths. From these figures one can calculate the lifting capacity, substitutions, conversions, and cycle life upgrades for a door of given weight and drum geometry. The weight-lifting capacity of a given spring is calculated based on its torque constant (IPPT, or inch-pounds per turn), which is the rotational version of the spring constant that characterizes the spring. The IPPT constant is found from tables giving IPPT for given spring dimensions (wire-size/diameter/length). The same tables may indicate the maximum number of turns for various expected lifetimes in cycles. The torque required to balance a given door can be calculated from the weight of the door times the moment arm of the drums (as we do below under "Calculating the Forces We Will Be Handling"). The ultimate torque of the spring in the fully-wound condition is the number of turns (when fully-wound) times the IPPT constant. Choosing a spring to balance the door then simply requires matching the ultimate torque of the spring to the balancing torque.
Security Lights: Most newer garage door openers have at least two bright light bulbs, as well as lights activated by motion. On the other hand, some older or cheaper openers are limited to a single light bulb. This doesn't help much with a garage darkened by shadows, leaving you unsure if the rustling in the corner is your cat … or a skunk that snuck into the garage.
Ryan, the tech that did the initial inspection and Kyle, the tech that did the installation were both extremely skilled, knowledgeable, and have excellent customer service. They arrived on time as scheduled. Explained well what needs to be done and did the job well. We’re very pleased and recommend Castle Garage Doors. We’re giving Ryan, Kyle 10 🌟 along with Hollie for having excellent customer service in making sure the whole process ran smoothly. Thank you 👏🏻👏🏻👏🏻 -Grandpa & Grandma Read less
Here are the winding rods inserted in the winding cone of the unbroken old spring, posed just for a picture. Note that I have carefully placed a sturdy, steady ladder just clear of the swing of the rods, such that when I am standing on the lower rungs to reach the rods, that my head and body are clear of the "kill zone" around the spring and cone. You must have a trustworthy platform to stand on, because a slip or shake of the ladder while you are winding can cause you to lose your socketed attachment to the cone, letting loose the spring. I would not trust an ordinary household step ladder for this purpose.
Since the springs are winding "up" when the door is closing and going down, the fully closed position is the most stressful on the steel and thus the most likely position at the moment of failure. This is a good thing, because failure near the top-of-travel means that you suddenly have a large, increasing weight falling. Thus we see the principle that you should never be standing or walking under the door when it is opening or closing, especially if you do so manually instead of with an electric opener. When the springs are working correctly, the door appears nearly weightless, but this is an illusion that turns into a calamity when the springs suddenly fail.
Garage door openers make it easy to get your garage open without the struggle or the hassle of facing inclement weather. The latest garage door openers have new features such as timed close, battery backup and improved energy efficiency. Sears carries top-of-the-line garage openers that can run much more quietly and smoothly than old models. With a keypad feature, you'll be able to get into your house using a secure four-digit code. With a few new batteries in your remote, you'll be opening your garage with the push of a button.
Your garage door is used often, generally more than any other door on your home. Therefore, it’s important to make sure that it’s tough, dependable and weather resistant. Our doors are fully capable of meeting all these requirements and are specifically designed with our customers in mind. While durability is important, so is appearance and we offer many different styles and colors of garage doors to match your home or business.
Before setting the last panel in the tracks, set the power unit on the actual frame and slide it in the ends. Hardened screws are used to attach the center bracket (Image 1). They are a different type screw — they are tougher and will last a lot longer. Make sure the bracket is level (to the eye) when installed and leave the bracket a little loose so adjustments can be made. Fasten down all the hinges (Image 2).
Tom was professional, knowledgeable, and very friendly. He arrived at my house within the time frame he said he would (nothing is worse than a late technician). Once he arrived, he assessed the problem, explained it clearly and concisely, and informed me he had the parts available with him to fix it. He fixed the issues speedily and I was able to return to work within the hour. The price was reasonable too. I would recommend Precision to any of my friends and neighbors. Thanks Tom!
The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana.[1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.[2]

If you have an oversized door, one made of a heavier material such as wood, or a one-piece door, you should consider getting something stronger. In these cases, look for a garage door opener motor rated between 3/4 horsepower and 2 horsepower. There’s nothing stopping you from using a 2-horsepower opener on a smaller door, which can make for smoother operation and a longer service life, but high-horsepower units cost more.
Recently another type of opener, known as the jackshaft opener, has become more popular. This style of opener was used frequently on commercial doors but in recent years has been adapted for residential use. This style of opener consists of a motor that attaches to the side of the torsion rod and moves the door up and down by simply spinning the rod. These openers need a few extra components to function safely for residential use. These include a cable tension monitor, to detect when a cable is broken, and a separate locking mechanism to lock the door when it is fully closed. These have the advantage that they free up ceiling space that an ordinary opener and rail would occupy. These also have the disadvantage that the door must have a torsion rod to attach the motor to.
See the Sectional Overhead Garage Door catalog (PDF file) from the Prime-Line replacement hardware company. Their brochure Sectional Garage Door Torsion Spring Installation Instructions (PDF file, part number GD-12280) is brief but informative. Apparently you can only obtain their torsion springs as special order items through mom-and-pop type hardware stores like Ace and True Value, and not the big-box Home Depot and Lowes.
Thus it is humanly impossible to dodge a falling door. If the spring happens to break when the door is moving up or down somewhere in the middle of travel, as is more likely, then you'll have even less time. Hence it is not prudent to stand or walk beneath a moving garage door. Of course people often do, and the only reason this does not frequently kill people is that springs typically break at the bottom of travel, where they are stressed the most.
When buying an opener, choose a 1/3 hp or 1/2 hp opener for a single garage door (1/3 hp can be hard to find at some home centers). Go with 1/2 hp for a double door and 3/4 hp for a door that has a wood or faux wood overlay (they can be heavy!). Openers have a set opening speed, so installing an opener with a higher horsepower won’t open your door any faster.
If you haven’t looked at garage doors lately, prepare to be pleasantly surprised. We’ve taken the garage door and made it stylish with designs to complement both classic and contemporary homes while still keeping the functionality you desire. A garage door can represent more than 30% of your home’s curb appeal, which makes choosing the right design especially important – and Home Depot has the widest selection available. With over 1,000 different garage door designs in wood, steel, composite, aluminum and glass, you’re sure to find the perfect style to transform your garage… and your home.

Unmatched or mismatched spring pair: You may find that you have a pair of springs that are different sizes. This mismatch may be a normal application, since the total torque on the torsion shaft is simply the sum of the torque contribution of each spring (indeed, very large doors can be lifted with 4 or more springs along the torsion shaft). The sum of the torque rates determine the lift; and dividing the torque among multiple springs does not change this. Some repair shops even apply mismatched pairs deliberately, since a few stock sizes of springs can be combined to fit a wider range of door weights than only matched pairs. For example, a technician may carry springs in increments of 20 lbs of lift, and when using pairs this allows a 20 lb increment in possible choices instead of 40 lb increments. Or, one spring from a pair may have broken and been replaced with a spring of equal torque rate but different size than the original.
In 1992 the United States Consumer Product Safety Commission released new rules for automatic garage door openers. Anything manufactured after 1993 was required to include either an electric eye (a pair of sensors that detect an object obstructing the doorway) or a wall-mounted control button that users hold down in order to close the door entirely. Most manufacturers opted for the electric eye method, sometimes referred to as safety sensors.
The right side of the photo shows the center bearing plate where the stationary cones attach with two bolts. Some doors may have only one spring rather than two equal ones as shown here (indeed, old marks on the shaft show that this door originally had one spring about twice as long on one side). Above the center bearing plate is the bracket and track from the electric opener.
In 1992 the United States Consumer Product Safety Commission released new rules for automatic garage door openers. Anything manufactured after 1993 was required to include either an electric eye (a pair of sensors that detect an object obstructing the doorway) or a wall-mounted control button that users hold down in order to close the door entirely. Most manufacturers opted for the electric eye method, sometimes referred to as safety sensors.
Our knowledgeable, dependable and friendly team of professionals can work closely with you to select, design and install a quality garage door that best serves your daily needs, enhances the architecture of your home and fits your budget. The extensively trained and experienced technicians at Kitsap Garage Door can help you with any of your garage door service needs, large or small, and are ready to repair any garage door make or model.
The not-so-competitive advertising trick: How about this racket: We have all heard how you should get at least three bids for any home improvement jobs, right? In some areas the largest ads in the yellow pages are from a single business using various names and phone numbers, masquerading as independent competitors. When you call asking for prices, "they" all quote you very high numbers. You are tricked into thinking you have shopped around for the prevailing price. (The more modern version of this is multiple Web sites that all direct you to call the same person.) If you've ever had to call a plumber you may have unknowingly been a victim of a similar trick.
An intermediate stage of the garage door opener market eliminated the DIP switches and used remotes preprogrammed to one out of roughly 3.5 billion unique codes. The receiver would maintain a security list of remotes to which it would respond; the user could easily add the unique remote's code to the list by pressing a button on the garage door opener while activating the remote control. The large number of codes made the brute force try-all-possible-digital-codes attacks infeasible, but the systems were still vulnerable to code grabbers. For user convenience, these systems were also backward compatible with the older DIP switch remote codes, but adding an old technology remote to the security list made the garage door opener vulnerable to a brute force attack to find the DIP switch code. The larger code space approach was an improvement over the fixed DIP switch codes, but was still vulnerable to the replay attack.
Add strength security and style to your home Add strength security and style to your home with a Clopay Garage Door. The 3-layer steel construction features polystyrene insulation for added energy efficiency and quiet operation. Decorative panel edging and natural embossed wood grain texture improve appearance close-up and from the curb. This door also features Clopay ultra-grain a ...  More + Product Details Close

The Chain Drive Rail Extension Kit for 10'-High The Chain Drive Rail Extension Kit for 10'-High Garage Doors is required for reliable everyday operation of Chamberlain chain drive models in 10-ft. garage door applications. Featuring a quick-install extension rail and replacement chain the kit includes everything needed for quick and easy installation. Includes one-year warranty rail extension replacement ...  More + Product Details Close


Customers who have purchased this garage door opener for their homes have been mostly satisfied with the performance of it. Many have raved about how quiet it actually is—one said instead of hearing the metal squeak and clank like with their last one, only the sound of the “wooden door being jostled around as it is pulled up and down” is all you hear with this one. Customers were also happy with the features including the automatic closer when you forget to shut it after you go inside. Some had had issues with the manual being hard to understand while installing it themselves. But most were happy with the overall performance.
These are just my observations as a consumer; I am not on a crusade to change the garage door industry. But I will observe that the Web is the innovation that can finally give intelligent consumers the advantage in these commercial games. Trade restraints work only when all sellers in the market collude in and agree to the scheme. If anyone, anywhere is selling freely, then the Web can help you find them. In the years since I have first published this information, a number of reputable Web-based merchants have appeared to supply the parts you need to repair your garage door as a do-it-yourselfer (and I have linked many of them below).
Those who benefit from this anti-competitive behavior have many excuses for it. They claim that the product is too dangerous and infrequently needed for the public to purchase directly. They say the job is hazardous and requires techniques and tools with which the amateur will rarely practice, which is true. They write me in anger saying I don't understand how expensive it is to put a truck on the road with a technician and parts and salary and benefits and insurance and advertising and every other common business expense. They say it will take the homeowner hours of effort to do this safely and correctly, while they can do it in a fraction of that time and at a price that isn't worth the effort to save. But should they set themselves up as the judge of what you can and cannot do? Of what is an economical use of your time? Imposing minimum order quantities or charging retail prices for small orders is legitimate; inquiring into the purchaser's background is not.
Garage door frames and mouldings will freshen up the appearance of your garage and garage door. We offer frames in a broad assortment of finishes and widths, so you can find the perfect fit for your garage. Update or repair the hardware on your garage door with our wide selection of our garage door parts and accessories. Some of the accessories we offer include cables, hinges, reinforcement brackets, and locking door handles.
×