Innehållsförteckning för Issue 4693 från Model Engineer

MARTIN EVANS Editor DIANE CARNEY Assistant Editor YVETTE GREEN Designer Gloucestershire Extravaganza If you are into extravaganzas then it may be well worth while taking a trip over to Gloucestershire. After a two-year hiatus due to the pandemic, the 46th Gloucestershire Vintage & Country Extravaganza will make a welcome return to South Cerney Airfi eld, Cirencester on the 5th – 7th August 2022. Rally chairman Martyn Slater said ‘The show will be packed full of exhibits, displays, entertainment and stalls to keep the whole family entertained. We pride ourselves on being one of the best value days out for all – and we’ve frozen our prices for the 11th year. What’s more, the event helps local and national charities with up to 30 represented on site raising money and awareness of…

Glasgow has a fine engineering heritage developed during the 19th Century when it became known as the Second City of the Empire. Sadly, most of its industry has vanished and shipyards have closed, although the city centre retains many impressive buildings from that era. Older readers may recall the Transport Museum in Glasgow’s Coplawhill Works at Pollokshields, later relocated to Kelvin Hall. Riverside Museum is a worthy successor with a distinctive building designed by architect, Zaha Hadid. Preserving much of Glasgow and Scotland’s transport heritage with a large range of objects and innovative displays, it is easily spotted from paddle steamer trips down the Clyde on the Waverley as the Tall Ship, Glenlee is moored in front (photo 1). Further articles about the Tall Ship and a Clyde journey on…

Continued from p.679 M.E. 4691, 20 May 2022 The running boards The running boards (fig 25) were laser cut but all the cutouts are best left until the final assembly. For example, the hole for the clack piping can only be positioned after the clacks have been fitted to the boiler. I’ve found the easiest way to mark them out is by dropping a pointed bar through the clack body (square to the running boards), to make a mark on the running boards. The edges of the running boards can be finished off neatly with a piece of 6mm square bar, the same used for a number of components during the build (photo 102). The square is riveted with 2mm rivets at 20mm intervals along the length, with neat rounds…

Continued from p.746 M.E. 4692, 3 June 2022 There are many examples of this particular engine on various media outlets but all that I have seen so far show the engine running with a single carburettor and air filter. I can only conclude that the twin carburettor supercharged version may be a bit trickier to set up and get running, so I set out to produce two manifolds; one for the single carburettor that hopefully will run and another for the supercharged twin carburettors, that would also require a different cam shaft and so quite possibly will only be for show. The side faces of both manifolds that mate against the cylinder heads not only have to be as close to 45 degrees as you can get them, but they…

PART 34 - MATTHEW MURRAY AND THE ROUND FOUNDRY Buying the land Continued from p.706 M.E. 4691, 20 May 2022 As Boulton and Watt stumbled through the five years that would ultimately result in the engineering works known as the Soho Foundry they could not know that theirs was a single building block in a process that would lead to the revolutionary new industry of engineering. Within the space of twenty years the millwright’s dominant role in creating machines was to be usurped by a rising generation of specialised engineers working almost exclusively in metal and using new tools within a factory environment. The protean engineering works that made the industrial revolution possible had its origins in a handful of firms that seized the opportunity offered by the end of…

Continued from p.743 M.E. 4692, 3 June 2022 Having reviewed in Part 3 (M.E.4692, 3 June) the various parameters that can affect a soldered joint, we conclude by discussing the practicalities of soldering and summarise the best options for various tasks. Choosing the right method The easiest way of deciding which is the best method is to summarise the data as in table 2. This starts with the first line, showing the simplest materials to join, going down the table with increasing difficulty of making a joint. Where a metal is not easy to tin, such as when soldering mild steel items together, the best method is to use an active flux (such as Baker’s Soldering Fluid) to tin the mating surfaces and then thoroughly wash off the active flux…

June 18/19 Cardiff Model Engineering Society Welsh Rally, evening hog roast, Heath Park - see www.cardiffmes.co.uk Contact: secretary@cardiffmes.co.uk 18/19 Fareham and District SME Sweet Pea Rally, Club Track 10:00 – 16:00. Contact: sweet?pea-2022@fdsme.org.uk 18/19 Melton Mowbray MES Steam Show, Whissendine Sports Ground – see mmdmes. wixsite.com/home Contact: jacced@hotmail.co.uk 18/19 Reading SME LittleLEC 2022, Prospect Park, Reading. Contact: littlelec@gmes.org.uk 18/19 Southport MEC Open Weekend, Victoria Park 10:00 - 16:00. Contact: Gwen Baguley, gwenandderrick@yahoo.co.uk 19 Bradford MES Running Day, Northcliff Railway 13:30 – 16:00. Contact: Russ Coppin, 07815 048999 19 North Wilts MES Public Running, Coate Water Country Park, Swindon 11:00 – 17:00. Contact: Ken Parker, 07710 515507 20 Bristol SMEE Talk: ‘Fusion360 Review’, on Zoom, 19:30. Contact: secretary@bristolmodelengineers.co.uk 25 Cardiff Model Engineering Society Steam-up and Family Day, Heath Park, Cardiff. See…

HIPP Clock Carl Wilson describes the operation of his Hipp clock, based on John Wilding’s large balance wheel clock. William Spence Cliff Almond resumes the story of the Guinness brewery’s narrow gauge tram engine. We Visit Urmston John Arrowsmith takes a trip to Trafford to visit the Urmston club. Oscillating Engine Hotspur fits the water pump to his three-cylinder oscillating engine and makes the reversing gear assembly. Local Hero Roger Backhouse looks at the life of businessman and industrialist Henry Schneider, of Barrow in Furness. Content may be subject to change. ON SALE 1 JULY 2022…

FRANK COOPER Frank Cooper, chairman of the 7¼ Inch Gauge Society, died suddenly at home on the 3rd May 2022. Frank was a great asset not only for our Society but for model engineering interests in a variety of fields. He worked extremely hard on behalf of our Society and his contribution was so wide that it is difficult to know where to start in trying to record all that he has achieved. Frank had a professional background in insurance and his knowledge in this area was often put to good use in regard to model engineering activities. Frank was appointed as Society chairman at the 2014 AGM, having already served on the committee as membership secretary since 2010. It was typical of Frank’s ability and his willingness to cover…

Continued from p.741 M.E. 4692, 3 June 2022 The connecting rod This is 83mm long x 32mm wide x 6mm thick (fig 8) and I used brass because I had some. This was cut a few mm oversize and a fly cutter was used in the mill vice to square it up and bring the width to final size but it was left over long for the moment. The surface was also badly marked and again this was cleaned up with the fly cutter (photos 45 and 46). Most of my materials came from a scrap metal dealer, who I used to do electrical work for, so it’s not in the best condition. I never made any money working for him but always came away with lots of metal. The…

Continued from p.772 M.E. 4692, 3 June 2022 The outside cylinders are dealt with in much the same way as the inside cylinder (see part 33, M.E.4689 22nd April) but with some differences so I will provide a brief description here. Squaring up the outside Firstly, the cylinder castings must be squared up to provide reference faces for the subsequent machining operations. I started by squaring up the top and bottom and then facing off the back face at right angles to these, checking that the distances to the centres of the bores from all faces corresponded to the drawing. Bores My setting up approach was more or less the same as with the middle cylinder and I was able to use the same raising block, with some modifications. Once…

Silver Soldering Dear Martin, Having read the Smoke Rings editorial in issue 4687 (March 25th) of Model Engineer, I was interested to read at the bottom of the page the article on Silver Soldering in which Martin Gearing wishes to correct a small error in his article in issue 4668 of 2nd July 2021, about certain grades of silver solder not being allowed to be used in boiler making under the Australian boiler codes ie having phosphorus and less than 15% silver. Why would this be? I remember many years ago that the use of silver solder containing cadmium in its make-up was banned in Britain due to the alleged toxicity of fumes coming from the cadmium and that now the silver solder that we use either as model engineers…

Continued from p.252 M.E. 4671, 13 August 2021 Progress to date This series of articles describes the rebuilding of a 2006 Modelworks 5 inch gauge Britannia and the last Part was in Model Engineer 4671, published 13 August 2021. That largely took us to the completion of the main locomotive. So why has it taken me so long to continue the series? Well, my fault obviously. I did take a few months off from the workshop in the summer of 2021 but it has since been pretty solid work through the past winter. The reason for the slow-down is that this ‘rebuild’ has turned into a ‘new-build’ for much of the engine. For the locomotive it is just the frames, wheelsets, bare cylinder blocks, motion and boiler that are largely…

Following on from my visit to the West Country, I journeyed up to Lancashire at the end of September (just as the petrol problem began to emerge) to visit a number of model engineering clubs in that county. My first visit was to the Leyland Society of Model Engineers. Located in Worden Park in Leyland, the society has developed a first class model engineering club and miniature railway over the last 60 years. I have been couple of times in the past but these have been when other events like the 7¼ Inch Gauge Society AGM was taking place. This time I was able to take my time, talk to members, enjoy their extensive facilities and find out a bit more about the club. Being located in Worden Park they…

Harken ye! ‘tis the sound of more inconsequential dross from the undersigned, Brigadier The Reverend Geoff T. Loudermic, CDM, and Bar, (Mrs), having now acquired an amplifier for his radios. My locomotive, Deborah, is approaching a milestone. The electronics are tested, the motor/layshaft is ready and securely mounted, and I have reassembled the primary chain drive and tested it on the bench, running for 15 minutes continuously but with no load. It is now in the garage almost ready to run on my temporary track, as my driving trolley has been completed. Perhaps I should paint a tunnel mouth on the garage door? In this issue, Cadets, flat packets (not Swedish), a record, small cattle?, a nameless cat, variable pitch and blue buses. I start with a Mother Hubbard of…