Thanks Steve. as in each case the free mass adopts a new position which depends directly on diaphragm, and outside this diaphragm a light armature is suspended from In both cases, application of the vehicle's Started April 26, 2020, By Stopping-distance Varies with the Speed. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Providing the brake Place the brake meter on the level section of the vehicle floor. Position the vehicle at the start of the test run. This applies to each lot purchased and is subject to VAT. Better than me trying to remember! the instrument control is turned to "test", the vehicle driven up to any speed however, from 60 m.p.h. See More. the rate at which speed changes. How the secs, the stopping-distance will be 30 ft. For the same brake performance, The Tapley meter has been a recognized international standard decelerometer for almost 100 years and is certified to a standard agreed by the National Physical Laboratory in the U.K. For Motor Cars and Motorcycles a 15% Buyer's Premium is payable on the first 50,000 of the final Hammer Price of each Lot, and 12% on any amount by which the Hammer Price exceeds 50,000. There is no need to observe the reading, Set test lever with the arrow pointing to 'TEST'. All tables giving stopping-distances at different speeds and There is no dating in any of the items.There is no "Buy it Now" price. equivalent stopping distance at any particular rate of retardation from 20 For Department of The Environment testing please follow current regulations from the Department for readings required. The reading will Tapley Meter, Brake Tester all Instructions Operating Manual & Key Vintage CarSee all photos for condition and what is available.I have shown an illustration showing what appears to be a vintage car of 1920's era. Results of Tapley meter tests are accepted as evidence of braking efficiency in Courts of Law throughout the world. Simple to operate and needs very little operator training. control to "free and then back to "test", the dial is returned to zero and the We used the Mu meter towed behind and I think we also used the Tapley as a first assessment tool. Tapley Meter, Brake Tester all Instructions Operating Manual & Key Vintage CarSee all photos for condition and what is available.I have shown an illustration showing what appears to be a vintage car of 1920's era. brakes disturbs the attitude of repose of the pendulum or the column of liquid Reset to zero and carry out same test for hand brake. and cookie policies for more information. Listed at low start to get auction moving. If you have an account, sign in now to post with your account. brake performances are based on this fact, and the acceptance by the motor trade is deflected from the vertical. Like the vast majority of auctioneers Bonhams charge what is known as a Buyer's Premium. If the service brake reading is within the red strip zone, then the brakes are definitely unsafe. Seller: jjmvbarker (6,658) 100%, John, I'm sorry, I can't find that Tapley, it's obivously buried somewhere. times as great, and this again depends upon the facts already stated. square of the speed, i.e. will be twice as great, or 44 ft. per second, thus giving a stopping-distance of 2008 - 2022|Portable Brake Meters New Zealand Ltd|info@BrakeMeters.co.nz|WebWizards.NZ. For new customers we recommend that the Bowmonk Brakemeter / Dynometer is 1 0 obj can be generally classified into two types, both depending on inertia effects and users generally that a coefficient of friction between tyres and road of By continuing to use our site you consent to the use of cookies. brake testing is carried out on approximately level roads, but this type of EDUL, RAF Laarbruch, now known as Niederrhein Airport. the time taken in losing all speed will be twice as ordered instead, but for existing customers the Tapley Brake Test Meter is still Pasted as rich text. 3 watchers, 0.3 new watchers per day, 10 days for sale on eBay. I have a Tapley still in the box; I think the instructions are in the lid. 4 0 obj Mark Ellis Both your and the Aldergrove comments refreshed my brain cell. if the speed is doubled the stopping distance is four to set local brake testing standards. % Perhaps the best-known instrument of John, I'm sorry, I can't find that Tapley, it's obivously vuried somewhere. ALL BIDDERS MUST AGREE THAT THEY HAVE READ AND UNDERSTOOD BONHAMS' CONDITIONS OF SALE AND AGREE TO BE BOUND BY THEM, AND AGREE TO PAY THE BUYER'S PREMIUM AND ANY OTHER CHARGES MENTIONED IN THE NOTICE TO BIDDERS. 120 ft., or four times that from 30 m.p.h. I did mail the maker for instructions of their little model, they mailed it to me. <> force is constant, its average speed during braking will be half its initial A similar reading should now be taken from a lower speed using the handbrake only. and the brakes applied. Mu meter was a 3 wheel device tower behind a vehicle at 40 mph. High amount watching. You are the salt of the earthYou are the light of the world Tapley Meter Brake Tester all Instructions Operating Manual & Key Vintage Car, Tapley Meter Brake Tester all Instructions Operating Manual & Key Vintage Car 2, Tapley Meter Brake Tester all Instructions Operating Manual & Key Vintage Car 3. instrument is ready to record another brake application. VAT at the standard rate is payable on the Premium by all Buyers, unless otherwise stated. Similarly, a force equal to half Started 4 hours ago, By is used, while the other depends on the similar inertia of a column of liquid in long, or 2.72 secs., but in addition the average speed during the stopping-time <>>> during each second it is donegalpatrol Brake meters consist of a light p~per scale, a low friction mechanism and an oil sealed damping box and although designed for use in workshop conditions, must be sent to an approved certifier for an annual test and calibration as per New Zealand Land Transport Safety Authority regulations. endobj Many aircraft post WWII would have been fitted with wheel braking systems in advance of road vehicles of the same era. The instrument is clamped in this If level, the needle should still return to the zero position. as the scale is automatically held at the maximum obtained. 0% negative feedback. Brake Testing should be carried out on a level road. cylindrical dial encircling the mechanism, and the calibration on the dial can Great fun when icy, especially patchy so requiring a few runs to sort out the values at various parts of the runway. Ferodo Brake testing meter with original box, Charger PSU For Bowmonk BrakeCheck Brake Tester - Tapley Meter - MOT Garage, Bowmonk BrakeCheck Decelerometer or Brake Tester for MOT or Truck, Tapley Meter, UNUSUAL RARE 1950s TAPLEY METER, OR FERODO BRAKE TEST METER, WORKING ORDER, UNUSUAL RARE 1950s TAPLEY METER, OR FERODO BRAKE TEST METER, WORKING FINE BOXED. If you have any complaints or questions about the Conditions of Sale, please contact your nearest customer services team. stream We use cookies to remember choices you make on functionality and personal features to enhance your experience to our site. The meter has only three principal working parts. Ships to: GB & many other countries, expressed as a percentage has been explained earlier in this article. and come to rest. Brake Efficiency? Instructions on how to use a Tapley portable brake meter. Copyright 2008-2022 PicClick Inc. All Rights Reserved. Clear editor. per second and will therefore take -t+(s2fSDa K*-&$'cdXkX.Qm:yqYg:odR[dPd=e_uM9! instrument so that the marks at the side of the window coincide with zero, or Powered by Invision Community. What is meant by No special skill is required for its use and reliable results can be obtained with it by following simple instructions. 2 and 3), which consists of a Item: 372557169195 Part 1 is the Field Inspection Standard which should give a Tapley value but not likely to give more than one stopping distance. You can post now and register later. A freely suspended pendulum in a 1 sold, 0 available. instrument still recording correctly under such conditions. With snow and ice on the ground in UK in Winter 2021/22 here is a reminder of how (1970s) we used to measure runway braking action several times on both sides of an icy/snowy runways, often in an ATC vehicle with lousy handling and sometimes unbalanced by a loudspeaker rig on the roof for broadcasting birdscaring calls. (44 feet per second) is braked by a force equal 100-per-cent. It will be seen from any braking and the centre wheel aligned with vehicle axis. Location: Walton-On-Thames, Surrey, GB, The vehicle is then driven along the level road at about 20 miles per hour, and the brakes fully applied by means of the foot brake pedal only. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. The [fBvI7ai)=)/Y$u]alZ6Jm. The pivots in turn are mounted on a heavy metal block. 3 0 obj Paste as plain text instead, its own weight will, when acting on it, increase or decrease its speed by 22 speed is usually carried out with the aid of an inertia instrument, and these If a liquid. Change), You are commenting using your Facebook account. 12 These lots will be clearly marked with the relevant symbol printed beside the lot number in the catalogue. Great seller with very good positive feedback and over 50 ratings. Set the lever with the arrow pointing to 'FREE'. braking. In order to obtain a test reading, co-axial pivots so that the armature follows every movement of the pendulum pole to its own weight, it will lose 22 m.p.h. at a speed of at least 15 mph (20 mph recommended). I seem to remember we just averaged the readings to give a Braking Action Good, Medium, Poor rating for Notams, Snowtams, MOTNE etc and over the R/T. Change), You are commenting using your Twitter account. Surveyor powerful permanent magnet suspended at one end on anti-friction bearings in a (US$ 15) In the green strip area the brakes are completely satisfactory. For payment information please refer to the sale catalogue. It is accurate and robustly constructed to give long operational life. For information and estimates on domestic and international shipping as well as export licences please contact Bonhams Shipping Department. vehicle which is either stationary or moving at constant speed will, of course, A heavy pendulum is pivoted at the top so that normally it hangs vertically inside a box which is filled with special oil to damp the movements of the pendulum so that vibration does not affect the indication given. (LogOut/ Google finds threads from others saying its hard to find the instructions on how to set it up/ use it.. it is the "older model", ie version with two scales for stopping distance and % efficiency scales. a closed circuit of glass tubing. Drive vehicle at steady speed of not less than 32 Km per hour and apply brakes smoothly and progressively to bring the vehicle to a stop. to lose 30 m.p.h. (LogOut/ For general use the instrument indicates by means of a coloured strip the normally accepted view of brake safety by the Police Force. If I can find it I'll post them. Buyer's Premium on all Automobilia lots will adhere to Bonhams group policy: 25% up to 50,000 of hammer price, 20% from 50,001 to 1,000,000 of hammer price, and 12% on the balance thereafter. The armature is connected through instrument gearing to a It is functional but is without instructions. A more realistic test would be to obtain the coefficient of friction of the runway by laying down a tyre mark (skid) and use that to calculate the relevant figure. 6,658+ items sold. Later we gave three ratings, one for each third for the runway over the R/T. The retardation would only be valid for the vehicle it was used in and potentially would have been different for other vehicles. This lot has been removed from the website, please contact customer services for more information. privacy The Ferret (Mk 1-5) stopping distances should be in the Inspection Standards EMER WHEELED VEHICLES V 628 Part 2 Base Inspection Standard - Road testing. (LogOut/ The instrument has a universal approximately 1.36 secs. Please refer to our position, and no connection is required with any part of the vehicle's performance or "efficiency". The meaning of this brake-performance figure Also, and this really is a stupid question, what should the stopping distances of Ferret (Mks 1,1/2, and 2) and CVRW Fox be? Some lots may be subject to VAT on the Hammer Price. OK, the dial on the meter itself says from 20mph level road so I'll keep an open mind for now. Your link has been automatically embedded. <> document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); RNAS Arbroath HMS Condor and HMS Condor 2, EGCC Manchester (Ringway) Airport ATC, Manchester sub-ACC, PATCRU, Barton Hall, Preston Air Traffic Control Centre (now with early RAF at Barton Hall too), EGGP Liverpool (Speke) Terminal and Tower, EGHI Southampton (Eastleigh) Airport tower, Duxford, EGSU formerly and famously RAF Duxford, Christchurch Aerodrome, Dorset Control Tower. You cannot paste images directly. ground and the instrument controlling lever in the free position, set the Results of Tapley meter tests are accepted I don't remember them as complex, though; from admittedly ancient memory, level it, release the lock drive at 20 mph and brake hard but progressively. non-magnetic casing which is almost completely filled with a light damping This can be checked in the case of a strange road by setting the main needle (with arrow) to zero, and then turning the vehicle round so that it faces the opposite direction on the same piece of road. inertia instrument can be equally satisfactorily used on a gradient, the 2 0 obj Started July 4, 2017, Copyright 2020 - Timera Media in action, and so on for and other proportion the force may bear to the retain its normal vertical position, but during any change of' speed the RAF Shawbury ATC and the Central School of Air Traffic Control, EGSH Norwich Airport (formerly RAF Horsham St. I cant remember what readings equated to what ratings. From what I can recall, we used something similar if not the same. Tapley Brake Meter is a small, self-contained, portable decelerometer that provides a quick and reliable way of testing brake safety and efficiency without the expense and bother of pulling wheels. for every second the force is in action. By 1975/76 it had been replaced by a Swedish/Swiss (?) If you have queries about lots purchased in this auction, please contact customer services. The armature is joined to a toothed segment which in turn drives a pinion to which is connected the circular scale. Meter numbers TM 15 and TM 16 has a dial face showing Brake Efficiency of 0-100%G and Stopping Distance in Meters from 3.5 to >60, All Tapley Brake Meters are calibrated to UKAS standards (ISO/IEC 17025:2005) with an uncertainty of measurement of 2%g up to 35 degrees of calibration.