naturalFrequency &= \sqrt{\frac{stiffness}{sprungMass}} \\ Am I wrong here by thinking that the weight or mainspring determine the power only while the suspension spring determines the regulation only? Great! If you are not in the USA or Canada, please contact me for a shipping quote to your country. The NAWCC is dedicated to providing association services, promoting interest in and encouraging the collecting of clocks and watches including disseminating knowledge of the same. 1840. Replacement spring is predrilled .112" diameter for easy installation. Spin the clock spring three turns back, and you should be in the center. First of all, don't just guess and click! Grandfather, Grandmother, Mantel, and Wall Clock This is the spring the holds the pendulum up in the air and lets it swing. #UW-Large - A large sized suspension spring for German-made, chain-wound and cable-wound, Urgos ("UW") mechanisms (movements) in modern (made after 1960) grandfather and grandmother clocks. The clock springs function is to send electronic signals from the steering wheel buttons to the control modules in the car. Values for For Kundo electronic clocks 16.0mm / 17.0mm (length x width) 9.0mm / 0.04mm (hole-to-hole length & spring thickness). Install Clock Spring. realistic vehicles are in the range of 0.2 and 0.6. Ask me! Unfortunately it doesn't have a suspension spring (pendulum mounted directly to anchor/crutch assy). A Timesavers Exclusive!! My address is: J.F.K. Ordering Offline (by mail, fax, or telephone). This chapter covers the design and performance of various types of spring suspensions for an accurate clock pendulum. This data is used by traction control or ABS and other systems such as ESC / ESP / TCS. Of course this may just make matters worse. Thanks for all the replies everyone! Now comes adjusting the beat and regulating the clock. If the vehicle is accelerating, braking or cornering the weight will be temporarily shifted Lets say you get six full turns. That's the challenge of configuring suspensions in real vehicles: finding a good The force produced by the springs depends on the distance they are . The clock pendulum suspension spring is the short spring steel part on the very top of the pendulum assembly. The NAWCC is dedicated to providing association services, promoting interest in and encouraging the collecting of clocks and watches including disseminating knowledge of the same. rest, cruising at constant speed, or under constant acceleration. A man with two clocks is never sure. Pins included. Always disconnect the battery and wait 5 minutes before replacing or disconnecting airbag restraint system components. In vehicles this force is typically caused by the weight that it can not rotate with the weight of the pendulum. Calibrate the steering angle sensor. Your clock probably has other problems if its suspension spring is in good order but the clock does not operate. (Find out why, HERE.). The clock spring is also quite hidden, so most people are not very familiar with it. Width .315" (8.0mm). Plastic. You may see the full listing of these suspension springs in the Online Shopping Cart. Testimonials Howard MillerRidgewaySlighTrendPearlSeth Thomas Beyond this point the spring has reached its See below. If you want to use the horn, but no sound comes out when you push the button, it may be caused by a faulty clock spring. Used on Urgos & other clocks. Try to press these buttons at the same time as you turn the steering wheel. For example, Hyundai and Volkswagen recalled the clock spring on some models. When the suspension is not moving the contact speed is 0. possible, simulating a suspension as a generic harmonic oscillator is generally a bad idea and may Used on Jauch clocks. that is, the rate at which the suspension dissipates the energy stored at the spring. If they work in a special position of the steering wheel, there is definitely a problem with the clock spring. Barometric compensation with a crossed spring suspension? Copyright 2022 National Association of Watch and Clock Collectors Inc (A 501c3 non-profit corporation). German made 27.5mm / 17.0mm (length x width) 20.5mm / 0.07mm (hole-to-pin length & spring thickness). 25.5mm x 4.0mm (length x width) 18.0mm / 0.05mm (hole-to-pin length & spring thickness). To reach or even see the clock spring, you have to remove both the steering wheel and the covers around the steering wheel axle. A hard contact with the rigid body is produced. Certified Automotive Diagnostic Technician. The steering wheel position is reported in degrees, and if you turn the steering wheel one complete revolution, the angle will be +/-360 degrees. If working with a floor clock it would be suspension A2 or A3 depending on the pendulum. This authentication occurs automatically, and it is not possible to sign out of an IP authenticated account. Aerodynamic surfaces push the vehicle down with speed, increasing the load on the wheels and is critically-damped, and a value less than 1.0 is under-damped (bouncy suspension). The slope of the force line is given by the stiffness K. The more stiffness, more steep slope. Find out more in our Cookies & Similar Technologies Policy. German made. SRS / Airbag Light On Meaning, Causes & How to Reset, Traction Control System (TCS) Light Meaning, Function & Causes, Is It Safe to Drive With the Airbag Light On? 23.75mm / 10.0mm (length x width) 17.0mm / 0.05mm (hole-to-end of teardrop hole length & spring thickness) Used on Morbier & others. Willie X Registered User Jul 23, 2017 #2 Used on French clocks. maximum force and cannot compress further. Harder springs and anti-roll bars, reducing weight transfers on accelerating, braking, cornering, etc. Otherwise, weight transfers occur The clock spring has wires that connect to the airbag and steering wheel buttons and, on the opposite side, has an electrical wire harness plugged into it. For Brillie and similar battery clocks. The less weight is loaded on a wheel, the less compressed will be its spring (suspension Suspensions in real vehicles don't have constant frequency and damping ratio at all times. View the institutional accounts that are providing access. Your email address will not be published. If you believe you should have access to that content, please contact your librarian. Copyright 2023 Mechanic Base. German made. Suspension A4 is only for huge clocks with tubes hanging off the back of it . they yield a surprising result: \begin{cases} JavaScript is disabled. How much does it cost to replace a clock spring? Choose this option to get remote access when outside your institution. German made. How I determine the right suspension spring for a clock - YouTube German made. 9.3mm (3/8) diameter brass block. All content and material on this web site is wholly created and authored by John F. Kurdzionak, without the use of any material from other websites, and thus is the property of John F. Kurdzionak. 19.5mm x 8.0mm (length x width) 15.5mm / 0.06mm (hole-to-pin length & spring thickness), German made. View your signed in personal account and access account management features. Mason & SullivanEmperorColonialKing ArthurDaneker For technical problems with this site please write to Find the center position of the clock spring. Pearl Grandfather Clock suspension spring. | NAWCC Forums Sellers looking to grow their business and reach more interested buyers can use Etsys advertising platform to promote their items. The suspension position is the contact depth where the spring force matches exactly the A suspension behaves as harmonic oscillator under certain conditions, and may be studied (& Why Not), Cruise Control Not Working? This also means that if the connection to the cruise control buttons in the steering wheel becomes bad, it can also cause the traction control warning light or the electronic throttle warning light to light up. When a wheel is lifted from the ground the suspension produces no force. #HM-Large - A large sized suspension spring for most cable-wound and some chain-wound mechanisms (movements) in modern (made after 1960) grandfather clocks. Made in Germany. Contact the Webmaster for perceived copyright infringement (DMCA Registration Number 1010287). Does a pendulums axis of rotation shift with amplitude? You must log in or register to reply here. Spring suspensions for accurate pendulums | Accurate Clock Pendulums simulation sampling rate is not enough to simulate the given spring rate. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. If larger, use suspension A3. Suspension springs for exchange must be in new or like-new condition. This video demonstrates the proper method to a do-it-yourself suspension spring installation. Starts out on time when wound on Sunday. For instance, imagine a racing car heavily braking at the end of a Worth a try with your Ansonia. German made. produced proportionally to the contact depth: The compression limit is the suspension distance. Re: Grandfather clock redux. A man with a clock always knows the time. Nivarox temperature With your order please tell me who you are; also how to contact you if I need to; and which suspension spring you would like to order. {}\\ The new suspension spring will guarantee ONLY that you have a new suspension spring, and that your clock's pendulum is able to hang & swing properly. Copyright 2022 National Association of Watch and Clock Collectors Inc (A 501c3 non-profit corporation). Used on French clocks. Read Application to real vehicles To enable personalized advertising (like interest-based ads), we may share your data with our marketing and advertising partners using cookies and other technologies. Set the pendulum into motion by moving the pendulum bob to either side of the grandfather clock case and releasing it. To determine if it is the clock spring causing these lights to light up, you have to check the trouble codes with an OBD2 scanner. The springs should be strong enough for sustaining the weight of the vehicle We hope you find the Clock Spring guide helpful. Contact the Webmaster for perceived copyright infringement (DMCA Registration Number 1010287). And please review "How to Select a Suspension Spring" to avoid incorrect ordering and disappointment. VIN Decoder. 24.0mm / 12.0mm (length x width) 15.0mm / 0.10mm (hole-to-pin length & spring thickness). A man with two clocks is never sure. Site Developed by, Huge selection of springs for every type of clock. If you cannot sign in, please contact your librarian. This results in disappointment, and the hassle of needing to exchange the spring and order again. Send check or money order made payable to "J.F.K. 25.0mm / 14.0mm (length x width) 20.5mm / 0.07mm (hole-to-pin length & spring thickness). 15.5mm x 10.0mm (length x width) 10.5mm / 0.06mm (hole-to-pin length & spring thickness). Since clock springs are inexpensive parts, we dont recommend trying to repair a failed clockspring. The suspension springis the thin, flat spring from which the pendulum of a clock is "suspended", or "held". Only the most common ones are listed here. LOL. (10% off), Keep collections to yourself or inspire other shoppers! You are using an out of date browser. So the single factor that defines the frequency of our suspension is the contact depth. No Pin. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide, This PDF is available to Subscribers Only. This chapter deals with the design and performance of various types of spring suspensions for an accurate pendulum clock. suspension spring installed on a Kern Install the assembly onto the clock by attaching the top block with a screw that threads into a hole and hooking the bottom block onto the pendulum but your work is not finished. These oscillation modes affect the design of the suspension. German made. Some societies use Oxford Academic personal accounts to provide access to their members. Privacy Policy Reportedly suitable for use on Seth-Thomas Model 0792-000 Skeleto German made. The force produced by the springs depends on the distance they are compressed and it's given by The drivers airbag may not deploy if the SRS or airbag light is on due to a broken clock spring, resulting from normal usage over time. In most car models, you need to make sure the steering wheel is in the middle when you remove it. This video applies specifically to a Jauch J77 movement, however you may find it useful for other. Here are the four most common suspension springs. When you run a full system scan on your vehicle, you will almost always have a fault code that directly or indirectly points to a faulty clock spring. I have one that has about a half hour swing (15 fast over first 3 days, back to right time on 7th day). Try using a different browser or disabling ad blockers. Clock Suspension Springs | Suspension Springs Replacement - Norkro Mechanical Clock Suspension Spring - Clock Parts - Clockworks I searched the post's and there are some differences in opinion on what size to use. damping ratio may be calculated by rearranging the equation above: damper = dampingRatio \cdot{2} \sqrt{stiffness \cdot{sprungMass}}. Website Design & Hosting Provided By EZMarketing. balance for most situations. among the suspensions. How suspensions work - Vehicle Physics Pro For full access to this pdf, sign in to an existing account, or purchase an annual subscription. are used to study the reactions of the suspension in different situations. Public collections can be seen by the public, including other shoppers, and may show up in recommendations and other places. Remember always to mark the steering wheel before you remove it to make sure you install it in the same position as before. Do not use a multimeter to test the clock spring if the airbag is connected, as this may cause it to deploy if you are unlucky. the contact depth. pendulum leader slot. A thicker suspension will make regulation easier on a springwound clock, as the added power at full wind will have less effect on the swing amplitude. The clockspring may be defective if you have one or more of these symptoms. Copyright © 2003-2015 Price-Less Ads TM. New tires won't make a broken old car run again. (Harmonic oscillator). JavaScript is disabled. The suspension spring is longer than necessary and must be trimmed to fit. I am curious as to what would be the effect of a thicker suspension spring on a spring driven wall clock (Ansonia Regulator A). If you turned the clock spring by mistake when it was not installed in the car, you will need to reset it. Learn more. The movement is stamped 1151-350H 114CM 60. The drivers airbag circuit will trigger a high resistance fault code, potentially causing the drivers airbag not to deploy if involved in an accident. The clock spring ensures that you can turn the steering wheel while having electrical functions integrated in it. Install the weight canisters according to the position in which they were removed. Likewise, a new suspension spring won't make an old broken clock run again. Would it reduce the weight requirement, and the wear on the movement ? If the same clock has a weight driven movement, what would happen if I replace the pictured suspension spring with a thicker, single strip susp spring. If you notice that your car stereo volume increases or decreases or has a flashing warning light only when you turn the steering wheel, this is a strong sign that there is a problem with the clock spring. German made. After a repair, there is no problem reusing a clock spring if you removed the clock spring correctly. Here down below is a more detailed list of the signs of a bad or failing clock spring to look for: Even if your car does not have a lot of fancy functions, one thing it most likely has is an airbag inside the steering wheel. Made in Germany. Timesavers - Suspension Springs as a harmonic oscillator under those conditions. The suspension position for a You are using an out of date browser. during each spring oscillation. Or, if you prefer to order "the old fashioned way" by mail, fax, or telephone, you can order offline. How to Replace a Grandfather Clock Suspension Spring Another interesting concept for the simulation is the number of simulating updates that will occur Want to know more? 3-15/16 long x 1/4 wide. Made in Germany. German made. Then turn it to the right and count the total turns. The last step is to install the clock spring. Used on Urgos and other clocks. In addition, the proper operation of the airbags is dependent on a working clock spring. Contact Me. Clock Pendulum Suspension-Spring Information - Clockworks As the steering wheel is turned, the clock spring uncoils and recoils, allowing the wires to stretch and contract without breaking. 1.) of the suspension will vary on the different situations (accelerating, braking, cornering) according to Unfortunately, this also means many functions that could fail, like when the clock spring fails and becomes faulty. No Pin. This happens when the vehicle is at You can buy a good replacement from any of the usual clock parts suppliers. conditions. Steering wheel or traction control warning light. The pendulum rod is made of invar. This is why an airbag or srs light is the most common sign of a faulty clock spring, especially if the light occurred when you were turning the steering wheel. webmaster at pricelessads.com. I have a W&H Sch small wall clock the problem is the suspension spring it is bent and twisted i have tried to straighten it and the clock does work but stops after a while, do you think you could change the spring, and if so what would be the best way to remove the pins given how small they are. your search terms below. Any help would be greatly appreciated! 24.5mm / 12.0mm (length x width) 17.5mm / 0.10mm (hole-to-end of teardrop hole length & spring thickness). I managed to find a replacement and it's on its way! You've already signed up for some newsletters, but you haven't confirmed your address. The clock spring is a very long wire or string twisted many times around the inside of the clock spring unit, making it able to turn the steering wheel without it getting damaged. No Pin. We may summarize the role of the vehicle suspension as: When the suspension is not moving the dampers have no effect. Its purpose is to suspend the leader and pendulum in the air. Chemicals, Adhesives, Soldering, Cleaning, Polishing, Clocks, Watches, Timers, Weather Instruments, Quartz Movement Installation Instructions, National Association Of Watch & Clock Collectors (NAWCC), Atmos Suspension Spring Installation Instructions, Suspensions Rods, Sheets, Springs & Suspension Related Parts, .00209" (0.053mm) Nivarox Suspension Wire-3 Pack, Double End Suspension Spring for Regulators & Other Clocks, Type 36 Post Office Suspension Spring Set, Large Jewelers Regulator Suspension Spring, Hermle 8-Piece Suspension Spring Assortment, Hermle #21-248C Suspension Spring .07MM THICK. Used on French clocks. You may also notice a steering wheel symbol on your dashboard or a traction control light. This is, of course, something you never want to experience, but it can be the reality if you ignore the airbag light. Questions? This happens when the vehicle is either - you guessed it. Anyone else continually impressed by mechanical clocks? 65.0mm x 6.0mm (length x width) 57.5mm / 0.10mm (hole-to-pin length & spring thickness). 1840. Cookies and similar technologies are used to improve your experience, to do things like: Without these technologies, things like personalized recommendations, your account preferences, or localisation may not work correctly. 21.0mm x 10.0mm (length x width) 16.0mm / 0.06mm (hole-to-pin length & spring thickness). Well these old clocks are not that difficult to repair if you take your time and work carefully. It is not very common that the clock spring will go bad in the first place, and often, they are pretty affordable, so replacing the whole unit is the much better option. Enter your library card number to sign in. A man with a clock always knows the time. All rights reserved. The springs in this chapter are made of thin flat stock, with their ends thickened afterward by clamping or soldering chops (thicker end pieces) onto the spring's two ends. 25.25mm / 12.0mm (length x width) 15.5mm / 0.10mm (hole-to-pin length & spring thickness). 24.0mm / 10.0mm (length x width) 19.0mm / 0.06mm (hole-to-pin length & spring thickness), German made. resting, cruising at constant speed or under constant acceleration. I have several types of suspension spring available. German made. I didn't make note of its size when I serviced it, but it is not a very thick (or powerful) spring. Made in Germany. Nivarox temperature compensating material is the material used by the original German manufacturer (OEM) in. 4.) The clock spring ensures that you can turn the steering wheel while having electrical functions integrated in it. Hooke's Law: K is the spring's stiffness or spring rate in N/m, and. This one fits the popular tall floor clock made in England or USA with the big bell on the top. Magnus is the owner and main author of Mechanicbase. Compare what is listed on this website to what your clock uses. (5 Steps) With or Without Scanner, How to Find the Radio Code to Unlock a Car Stereo, 5 Symptoms Of A Bad Brake Light Switch and Replacement Cost, 5 Symptoms Of A Broken Coil Spring and Replacement Cost, 4 Symptoms Of Bad or Worn Brake Shoes and Replacement Cost, Symptoms Of A Bad Airbag Sensor and Replacement Cost, 4 Symptoms Of A Bad Starter Relay and Replacement Cost, 6 Symptoms Of A Bad Valve Seal and Replacement Cost, 5 Symptoms Of A Bad Fuel Pump Relay and Replacement Cost, 5 Symptoms Of A Bad Driveshaft and Replacement Cost, 6 Symptoms Of A Bad Flywheel and Replacement Cost, Car Smells Like Gas Causes & What To Do, Alternator Overcharging: Symptoms, Causes & Fixes, Check Engine Light On But Car Runs Fine Causes & Fixes, Conventional vs. Clock Repair", to: J.F.K. Made in Germany. While you most likely can drive with a broken clock spring, its definitely not recommended. This size can also be seen on Grandmother clocks with larger bob diameters. Clock Suspension Springs - Etsy Used on Morbier & others. Clock Repair, 96 Cummings Park Drive, Woburn, MA 01801. Careers The movement is stamped 1151-350H 114CM 60. The suspension spring simply holds the pendulum in place, and allows the pendulum to swing properly. Brass top. Tall-Case Clock Suspension Spring for antique clocks. German made. below. Pin Center to Center: .875" (22.23mm). Content is for informational purposes only. Finally an alternative to Ni-Span C suspension springs. Your email address will not be published. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. The institutional subscription may not cover the content that you are trying to access. (Heres How to Fix it), How to Reset Airbag Light? The airbag is a susceptible system, and the slightest fault will light up the airbag warning light. Merritt's P-21.45 or P-21.46 should do it. In this video I am discussing different types of suspension springs for clocks, how to order them, and what the purpose is. Any help would be greatly appreciated! 16.25mm / 17.0mm (length x width) 9.0mm / 0.04mm (hole-to-pin length & spring thickness). Contact the Webmaster for perceived copyright infringement (DMCA Registration Number 1010287). In fact, your clock mechanism controls the suspension spring; the suspension spring has no control over, or effect on, the operation of the clock! If your clock spring is broken, it means that the connection between your steering wheel and your airbag has been lost. The effective sprung mass may also be used for studying the damping behavior, 17.5mm / 8.0mm (length x width) 12.0mm / 0.08mm (hole-to-pin length & spring thickness). Horolovar guide and how to determine the correct suspension spring for Following successful sign in, you will be returned to Oxford Academic. 22.0mm / 5.0mm (length x width) 17.5mm / 0.04mm (hole-to-pin length & spring thickness). Effect of a thicker suspension spring | NAWCC Forums 20.0mm / 5.0mm (length x width) 15.5mm / 0.05mm (hole-to-pin length & spring thickness), Made in Germany. Get Help, Terms & Conditions A clock spring is a vehicles steering system component responsible for maintaining an electrical connection between the steering wheel and the airbag, horn, and other electrical components. No Pin. #HM-Small - A small sized suspension spring for German-made chain-wound and spring-wound mechanisms (movements) in modern (made after 1960) grandfather, grandmother, mantel, and wall clocks. One of the most common symptoms of a faulty clock spring is the airbag light staying on all the time. Both can cause wobble. Please contact me to inquire about (or please see www.jfkclock.com for information about) the repair of your clock. These old clocks have quite large parts unlike the minute and intricate parts of a wrist or pocket watch. Set where you live, what language you speak, and the currency you use. German made. Pendulum Suspension Spring Rods - Installing a new one - Clockworks Go directly to the suspension springs page. for American Electric clocks. Made in Germany. deduct that a physically correct simulation should have alpha >= 2. Made in Germany. In this article, we will discuss the most common symptoms of a bad clock spring, as well as the cost of replacing it. specific wheel may then be calculated as: suspensionPosition = \frac{weight \cdot{gravity}}{stiffness}. If you see Sign in through society site in the sign in pane within a journal: If you do not have a society account or have forgotten your username or password, please contact your society. preventing them to bounce without control. German made. #1 Hi everybody! Select your institution from the list provided, which will take you to your institution's website to sign in. German made. Thicker may make the clock run faster; Thinner? The suspension spring A is the most common suspension spring needed.