Speed of a thrown winding bar:: The springs, being in balance with the door, effectively are able to launch a typical 150 lb door at 10.6 mph speed. An 18-inch long by 1/2-inch diameter steel winding bar happens to weigh about 1 pound. Since momentum is conserved, this 150:1 ratio in weight of the door to the winding bar means the fully-wound springs could potentially throw a winding bar at 10.6 mph * 150 = 1590 mph = 2332 ft/sec, assuming the energy were perfectly coupled and transferred. If the energy transfer were only 1/3 efficient, this would still be the 800 ft/sec speed of a typical pistol bullet. Except it is a foot-and-a-half metal spear, not a bullet.
Establish an alternate entry to your garage or update an existing one with our selection of garage entry doors. With an entry door, you will lose less heat or air when you enter your garage to work. Our variety of garage and outdoor organization materials will help you keep all the items in your garage neatly and efficiently organized while our floor coatings and utility flooring will help ensure your cement garage floors last longer than if they were left untreated.
Screw-drive garage door openers aren't as popular as some other types, but feedback indicates that those that give the Genie Excelerator a try are largely very happy that they did. It's a fast performer, owners say, and the company claims that it can move a door at a rate of up to a foot per second. It's relatively quiet, too -- perhaps not the absolute quietest that you can buy, but certainly quieter than a chain-drive opener, and quieter than older screw-drive openers, users report.
Here’s an opener that comes with all the bells and whistles. Featuring an ultra quiet belt drive, you’ll be thankful you purchased one like this especially if you have a room positioned near or above the garage. It’s also got battery backup so if the power goes out, you can still get in and out with ease for up to 20 open and close cycles for the first 24 hours of an outage. And for the technology savvy will appreciate its MyQ smartphone control technology that allows you to control the door via an app on your iPhone or Android, plus you’ll receive safety notifications if you’re away from the house and the door opens or closes. And for extra peace of mind, there’s also a feature that will automatically close the door after a set amount of time — you know, just in case you forget.
Stress and lifetime: Calculating the maximal stress in the wire is useful for estimating the lifetime. Using the formula above, the bending stress S in the spring wire is 32*238/(π*0.2253^3) = 212 Kpsi. The spring index C is D/d = 2.23 / 0.225 = 9.88. The Wahl correction factor is Kw = (4C-1)/(4C-4) + 0.615/C = 1.15. The Wahl-corrected stress is Kw * S = 1.15 * 212 Kpsi = 244 Kpsi. This predicts about a 10,000-cycle lifetime, which is the standard "cheap spring" configuration originally installed. Note that while this stress is proportional to the torque being applied, it is also in proportion to the inverse third-power of the wire size. Thus slightly heavier wire sizes (and suitably adjusted D and/or L) radically improve the expected cycle lifetime of the spring.

Lower the door and dismantle it by removing the hardware. Lower a double door by recruiting at least two helpers to help with the weight, and place a 2×4 block under the door to prevent smashing a foot or finger when it’s lowered. Remove the sections one at a time by disconnecting the rollers and brackets. If you have windows, tape them to help control flying shards if they break. Then remove the old roller tracks and remaining hardware.


Clopay® is proud to be the largest manufacturer of residential garage doors in North America and recognized as the leading brand among homeowners. For more than 50 years, we have helped homeowners reimagine their homes and create a personalized exterior that they can enjoy and take pride in for years to come. Clopay’s residential garage doors are designed and manufactured in the USA, starting at our headquarters in the heart of Ohio, and delivered to dealers via our 50 distribution centers throughout the US and Canada.
Good customer service is important for any product, but it is especially important for the class of garage door openers we considered. We looked primarily at models designed to be installed by a homeowner, not a professional. Even if you consider yourself to be pretty handy, you are sure to have questions at some point along the way. As such, we looked for companies that respond to all inquiries as well as for resources, such as a downloadable manual, to help with installation.
To estimate the maximum physical force required to wind these springs, consider that they are balancing the weight of the door with a torque applied to a lift drum on each end of the torsion shaft. The lift drums have a 2-inch radius, which is the standard residential size, and corresponds conveniently to about a 1-foot circumference. If we pessimistically assume the 10-by-7-foot door has a weight of 350 pounds, this implies a torque of 350 pounds on a 2-inch radius, that is, 700 inch-pounds, or 58 foot-pounds. Each of the two springs should be exerting slightly less than half of the balancing torque, or 29 foot-pounds. Compare this to, say, the bolts in an automobile, which are typically torqued to values of about 50 foot-pounds, or tire lug nuts, which may be torqued to well over 100 foot-pounds.
Give your garage a great look with garage doors from Menards®. Menards® has all the supplies, tools, and accessories you need to install a stylish new garage door. Choose the perfect door from our selection of residential and commercial garage doors as well as roll-up doors for storage sheds. At Menards®, you will find a wide variety of door sizes ranging from 4 feet to 9 feet wide, 10 feet to 16 feet wide, and over 16 feet wide. Because of the layer of insulation, insulated garage doors are generally quieter than noninsulated doors. Insulated doors also offer improved energy efficiency, so you can stay comfortable while working in the garage no matter what the weather's like outside.

Sterling Door is the only company we trust with our garage door. When our old door acted up, springs, track, etc., they were always timely and got the job done. Then when we made the jump to a new door, they were excellent. They helped us choose the right door, not just pushing the most expensive model. And installation was well done. I recommend Sterling Door for all of your garage door needs.
Versatile. That’s one way to describe our products. A total, one-stop solution that meets your every upward-acting-door need. Featuring premium materials, superior craftsmanship and innovative functions, our products continue to lead the industry, underscoring a legacy of quality, expertise and integrity.  This history ensures that you are making a good investment in your home with a quality product. In fact, according to the latest  Cost vs. Value Report by Remodeling Magazine, replacing a basic garage door with an upgraded one returned up to 85%​ on original cost on average – making it one of the top renovations in the study.
Keep in mind that when the springs are released there is nothing to help with weight replacement. Garage doors weigh 150 pounds or more and if the door were not locked in place, there would need to be some way of holding it up until it can be lower manually. If no one is available to help, a clamp can be put on the track at the end of the door (Image 1). When ready, release the clamp and take the weight of the door.
The Genie SilentMax 750 belt drive garage door opener isn't as feature-packed as the Chamberlain B970, but its value is hard to overlook. The 75-HPc motor isn't as strong as the B970s, but is still plenty strong for any residential use, and the opener is widely judged to be pleasingly quiet. Smart features are built in, too, but using those requires the addition of the optional Genie Aladdin Connect module (Est. $95). The biggest downside is that there's no battery back-up.
The first garage door opener remote controls were simple and consisted of a simple transmitter (the remote) and receiver which controlled the opener mechanism. The transmitter would transmit on a designated frequency; the receiver would listen for the radio signal, then open or close the garage, depending on the door position. The basic concept of this can be traced back to World War II. This type of system was used to detonate remote bombs. While novel at the time, the technology ran its course when garage door openers became popular. While the garage door remote control transmitter is low power and has limited range, its signal can be received by other, nearby, garage door openers. When two neighbors had garage door openers, then opening one garage door might open the neighbor’s garage door as well.
Trading wire size for length, diameter, or cycle life: Now we are really going to save you some money, if you just recall your high school algebra class (and I don't mean that cute cheerleader who sat next to you). If you further understand the role of the 4th power of the spring wire size (letter d in the formulas above) in the numerator of the spring rate formula, and how to increase or decrease d to compensate for changes in length, diameter, and cycle life, then you're qualified for elite spring calculations. Matching springs is a matter of equating the 4th power of the proportion in wire size change to the proportion of change in the diameter or length or the product of both diameter and length. However, it is usually best to only increase wire size when substituting a spring, since this does not derate the cycle life. If you observe that the formula for bending stress is proportionate to the inverse 3rd power of the diameter, then physically a proportionate increase in wire size will result in a dramatic increase in cycle life of the 3rd power of that proportion. Trade-off example: Yawn with me while we ponder my original spring once more. Let's say I was in a fit of engineering mania, and wanted to replace my spring having a 0.2253 inch diameter wire (d = 0.2253) with a 0.262 wire version (d = 0.262). How much longer is the spring with equal torque rate, assuming we use the same coil diameter? The proportion of this change is 0.262/0.2253 = 1.163, and the 4th power of that is 1.83. This means the length must increase by a factor of 1.83 (again, not counting dead coils). Recalling that the length in Example 1 was 102 non-dead coils, the heavier wire spring must be about 1.83*102 = 187 coils, which when adding 5 dead coils and multiplying by the wire size to get the overall length, is (187+5)*0.262 = 50 inches, versus 24 inches in the original. So using this heavier wire more than doubles the length (and thus the mass and thus the cost). While the cost about doubles, the stress goes down by the inverse 3rd power of the wire size proportion, or 1/(1.163**3) = 0.64. Sress is favorably, non-linearly related to cycle lifetime (halving the stress more than doubles the lifetime), so this decreased stress should more than double the expected lifetime of the spring. While the up-front cost is more, the true cost of an amortized lifetime is much less. In short, per cycle it is cheaper. Ah, the wonders of engineering calculations! Conclusion: Observe that the stress formula (and thus the cycle lifetime) depends only on wire diameter (d) for equal torques. Thus the only way to improve cycle lifetime is to use heavier wire. For equal torques, heavier wire size, due to the exponents in the formulas, increases cycle lifetime much faster than it increases mass (and thus cost), physically speaking.
The technician that came out, Todd Noel, was very friendly and professional. He fixed my problem quickly and did not overcharge me for something that I did not need. He also made some great recommendations for future work. Because of his level of service and my customer experience, I highly recommend Precision and will use them again in the future.
Through our garage door configurator by Clopay, you can design, visualize and purchase a new Clopay garage door. Upload a photo of your home and then browse the configurator to see which style works for you. Choose from a variety of designs, textures, colors, finishes, window options and decorative hardware. You’re able to easily and quickly see the transformation, and then make it a reality.
Today's garage doors come with those door sensors, and if anything is in the path of the door the sensor detects it and raises the door back to the open position. These precautions are important for families with young children or pets. Even if you don't have a mini me or furry friend running around your yard, it's a good idea to have a garage door that is safe for you, your guests and your belongings. 
In my case, removing and replacing the relaxed springs required that I take down the assembly: torsion shaft, lift drums, and bearings. Doing that requires unbolting the center bearing plate from the wall, removing the drums from the shaft, and finally sliding the shaft back and forth out of the end bearings to remove the whole assembly off the wall. I am fortunate to have a lot of clearance in this garage to make the disassembly simpler. Tighter clearance to walls or ceiling would make disassembly a more difficult manipulation.
It's a great idea to hire a professional to do your garage door opener installation for a few reasons. First of all, a pro can often be the most time-efficient way to handle the garage door opener installation, because a pro will have the right tools and experience to make your garage door opener installation as swift and smooth as possible. Secondly, a pro garage door opener installation will include making sure all the required garage door opener mounts and sensors are put together properly. A great garage door opener installation will include using the manufacturer’s recommended method of assembly and optimal placement of the garage door opener mount and sensors. Find top-notch garage door opener installation pros on Amazon Home Services and you'll see professional garage door opener installation services at competitive prices. Secure convenience and peace of mind by getting a professional garage door opener installation for your home. You'll never regret adding a garage door opener installation project to your to-do list. If you’re the kind of person who doesn’t have the time or patience to do your garage door opener installation, don’t worry. Because you don’t have to if you don’t want to. Amazon Home Services has you covered, to do your garage door opener installation quickly and professionally. Just schedule the garage door opener installation pro of your choice from our list of top-rated service providers.
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.
Openers are available with a chain drive, screw drive or belt drive. Chain drives (a long chain pulls the door open and closed) are the least expensive, but they’re loud. Screw drives (a long threaded rod drives a mechanism that opens and closes the door) are priced in the mid- range. They require the least maintenance, but they’re not as quiet as belt drives. Belt drives (a rubber belt opens and closes the door) are the quietest, making them the best choice if you have living space above the garage. They’re also the most expensive.
When it comes to installing garage doors and openers, The Home Depot has an unbeatable team of professionals dedicated to making sure your garage door project runs smoothly from start to finish. Your new garage door can be customized with a variety of features like unique color choices, window styles and hardware upgrades. We also offer options for your garage door opener including Smartphone control, Wi-Fi, battery back-up. The Home Depot installs garage doors and garage door openers with extended warranties that go beyond industry standards. Contact us today for a free in-home consultation.
The first garage door opener remote controls were simple and consisted of a simple transmitter (the remote) and receiver which controlled the opener mechanism. The transmitter would transmit on a designated frequency; the receiver would listen for the radio signal, then open or close the garage, depending on the door position. The basic concept of this can be traced back to World War II. This type of system was used to detonate remote bombs. While novel at the time, the technology ran its course when garage door openers became popular. While the garage door remote control transmitter is low power and has limited range, its signal can be received by other, nearby, garage door openers. When two neighbors had garage door openers, then opening one garage door might open the neighbor’s garage door as well.

A garage door is a large door on a garage that opens either manually or by an electric motor (a garage door opener). Garage doors are frequently large enough to accommodate automobiles and other vehicles. Small garage doors may be made in a single panel that tilts up and back across the garage ceiling. Larger doors are usually made in several jointed panels that roll up on tracks across the garage ceiling, or into a roll above the doorway. The operating mechanism is spring-loaded or counterbalanced to offset the weight of the door and reduce human or motor effort required to operate the door. Less commonly, some garage doors slide or swing horizontally. Doors are made of wood, metal, or fiberglass, and may be insulated to prevent heat loss. Warehouses, bus garages and locomotive sheds have larger versions.


Screw-drive garage door openers aren't as popular as some other types, but feedback indicates that those that give the Genie Excelerator a try are largely very happy that they did. It's a fast performer, owners say, and the company claims that it can move a door at a rate of up to a foot per second. It's relatively quiet, too -- perhaps not the absolute quietest that you can buy, but certainly quieter than a chain-drive opener, and quieter than older screw-drive openers, users report.
Garage Door Installation – This includes the installation of a new garage door. Includes the door itself, the track, cables, springs, hinges, handles, locks and rollers. It is the complete service and installation of a new door. We inspect all the parts, make adjustments to fit your garage opening, and service all elements during the installation process. Plus, we check to ensure all parts are in proper working order after installed.
Since their invention in the 1920s, electric garage door openers have come a long way. Garage door openers work by using a trolley connected to an arm that attaches to the top of the garage door and slides back and forth on a track, which opens and closes the garage door. When operating the motor, a chain or belt turns and pulls the trolley along the track. A good garage door opener will have a horsepower of 1/2 HP, 3/4 HP, or 1-1/4 HP. Garage door openers have the ability to open and close a limited number of times in power outage emergencies. Security is something else to consider when purchasing an opener. It's helpful to have sensors that will stop the operation of the garage door when a person, vehicle, or other obstacle is in the way.
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