Two of the spring references specifically for the garage-door industry are the APCO Spring Manual by Bill Eichenberger, and the Torsion Spring Rate Book by Clarence Veigel; these give tables of spring sizes and torque constants. Spring engineering principles in general are described in the Handbook of Spring Design published by the Spring Manufacturer's Institute; the formulas allow you to calculate torque constants knowing only the geometry and the Young's modulus of the material. You can also find some brief spring information in standard references like Machinery's Handbook and Marks' Standard Handbook for Mechanical Engineers.

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.
Absolute Overhead Door recently launched a blog that can be found here so that readers would be able to see the benefits of a garage and what they should do in the event their newly driving teenage drove into the garage door. The blog offers many tips for “fix at home” solutions as well as giving examples of situations when calling us for a service call is the best decision. In our blog, we give professional and honest recommendations for the most reader and budget friendly options for families looking for advice that doesnt cost a fortune and an obligation to purchase a new garage door from a salesman afterwards! Check it out! We hope you enjoy it.

Technician gave me a window of 1-4pm, I called at 330 to see if he was on his way. He told me he would be there at 4pm, reason being was because of the amount of work orders he had that day. He was also by himself, had no helper. I was very satisfied that he was able to repair my garage door. He was very professional considering he showed up on a Friday afternoon on a 100 degree day. Thanks again
I mentioned earlier that this apparatus had at least one prior spring replacement, with a single longer spring having been replaced by two shorter springs. The clamping of the original spring had pressed dimples and an eccentric distortion into the hollow shaft. While this distortion was large enough to block the old cones from sliding across, I was able to remove the old hardware by just sliding them in the other direction. I did not have to bother trying to press out this distortion, since I could just work around it.
You might not think it could get easier than pushing a big button to open a door, but some garage door openers make things even simpler by offering keyless entry and multiple remotes. Many models come with a keyless entry pad that mounts outside the garage door so you can gain access without a remote. While a remote is preferable for most situations, there are times when you need to get into the garage and don’t have it handy, so this is a nice feature to have.
If the wires that run from your opener to the photo eyes and to the wall button are exposed, replace them, too. Those wires have probably been in your garage for 10 years or more, and they may be nicked or worn. Newer openers are extremely sensitive and won’t work if a wire is damaged. It only takes about 15 minutes to run the new wire, so it’s time well spent. If the wires are protected inside the wall, you don’t need to run new wire.
A1 Garage Door Service is known for providing only the best value for money. We always aim for the best possible customer service and experience, reasonable costs for our products and services, give FREE estimates and FREE professional advice as well as amazing deals and discounts when you book our service. What’s more, we GUARANTEE that we service all manufacturer warranties, including lifetime warranties. What more can you ask for?
While you can certainly redo any security features on your garage door, it is often wise to replace the entire door if in fact that is the way a burglar gained access to your house. A new security code may seem like enough, but you don’t know how the thief figured out the old code in the first place. If the motor was disengaged, the issue might be a design flaw in the door itself. The best way to ensure that the thief doesn’t return or another thief doesn’t take advantage of the same unknown security weakness is to install a new door. Again, doing so with give you access to the kinds of robust security features that are being installed and implemented in the newest garage doors on the market.
The chain-driven Chamberlain C410's .5-horsepower motor has enough power to handle most residential garage doors. Owners say it lifts even heavy doors easily. While chain-driven openers generally are louder than belt-driven models, most say that, like its predecessor model, it's actually pretty good in that regard, and we saw fewer complaints about installation challenges, too. The opener is also well-equipped in the feature department, though you'll need to spend a bit extra if you want to use its smart functions.
A rolling code is a protocol used by garage door openers to keep your door safe and secure. When the radio signals from your remote control are broadcast to your garage door opener, it uses a specific code to communicate. Older models used the same code every time, making garage door openers vulnerable to burglars using a radio frequency identifier device. 

We also have a wide range of expertise repairing and installing both residential and commercial doors, meaning we can tackle any problem, large or small. We carry a wide range of doors from one of the industry’s leading manufacturers, Clopay, so you can make the choice that makes the most sense for your home and family while feeling confident that you are getting a door of the highest quality.

The various increments of standard wire sizes differ by only about 0.010 inch, so calipers or a micrometer would be the tool to use to be certain of the stepped size you have, or else a trustworthy ruler marked in tenths of an inch to use the measure-10-turns-and-divide-by-10 trick. The most common wire sizes in the US are 0.207", 0.218", 0.225", 0.234", 0.243", 0.250", and 0.262".
You can expect to pay between $130 and $350 for a garage door opener, with most models costing an average of $200. The most expensive openers usually include extra accessories and smartphone controls, though most openers can work with a smartphone if you buy a Wi-Fi adapter such as MyQ. The types of garage door openers in increasing order of average cost are as follows: chain, belt, screw and direct drive.
When picking the best garage door for you, a good place to start is with material type. Most garage doors are made from either wood, steel or fiberglass. These three materials are strong, durable and each have their unique benefits at various price points. In order to pick the perfect fit for your home we have developed the DoorView® garage door designer. This interactive visualizer tool helps you design your dream door and allows you to see how it will look on your home with just the push of a button. You can also try it on your Apple iPad and Android devices.
Though you can do some maintenance to your garage doors on your own, it may be a good idea to schedule routine inspections with a professional. A typical service call will include a manual inspection of the door and opener. Then adjustments can be made including spring tension, chain/belt tension, limits and force adjustments and door lubrication. Fees for this service vary from place to place, but garage door repairs typically cost between $147 and $340.

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.
We would definitely recommend Precision to anyone that needs garage door services! We were able to get a service appointment right away! Tom arrived and was very professional and courteous. He took the time to go over what repairs were needed and provided an estimate. He was ready to do the repairs right then and there and within a few hours, we had our garage door up and running like new! Thanks to Tom and Precision for a positive experience!

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.
The "safety issue" trick: Another tip-off is the use of language like "safety issue". This is meant to trump any objections you might have to a costly repair bill. Don't be manipulated by the suggestion that you are risking disaster if you don't buy something expensive. Even if you think the risk is genuine, get another estimate, and tell the second repairman you are skeptical; every technician loves to prove the competition made a mistake.
Ryan came to my rescue within 6 hrs of my call. He was professional, knowledgeable, friendly, and very thorough. He got my door up and running after figuring out what 3 others could not! Don’t try and go the cheapest route like I did because you’ll end up wasting time and money. Hire the pros like Ryan FIRST! If I ever need someone in the future, I’ll be calling them first thing! HIGHLY RECOMMENDread more
You might genuinely need some extra parts when you thought you simply needed a broken spring replaced, and a good serviceman will perform a simple inspection to identify such parts. Nor is it unreasonable for a business to charge separately for a service call versus repair work actually performed. But the best protection for you as a buyer, being somewhat at the mercy of whomever you decide to bring on site, is to understand what is being done, and ask intelligently for a clear explanation or demonstration of why extra parts are required.

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