The 762 Club - LYNformation Bulletins
Aware that much development has been going on in the background, but little has been seen in public, and also that the pace of development is gradually increasing, the 762 Club has introduced this on-line update feature. This page, to be updated at the beginning of each month, will provide brief news snippets and images and general "Lynformation" on our progress. Please come back regularly for the latest update. (just hover your mouse over the images to see captions):
See the current and archived versions of LYNformation here:
LYNformation Bulletin No. 3: May 2013
Exciting news on the boiler comes from Andy Bennett of Bennett’s Boilers. All of the small tubes are now installed and all of the welding in the firebox is finished. Also, the flue tubes have been inserted and the boiler is nearly ready for hydrauliciing! We are pleased to post a series of photographs showing the significant progress that has been made over the past few weeks. Critical items like the manifold take off and the header base have been made and fitted. These will be blanked off in order that the hydraulic test can take place. This process is where the boiler is completely filled of water, then via hydraulic pressure more water is squeezed into the boiler and thus creating very high pressures. “LYN”’s boiler will be tested to 2 x working pressure which means a substantial pressure of 500 psi! As the boiler is a fully welded boiler, we hope that there will be no leaks, but inevitable there is a need to correct any pin holes. Once the boiler can hold 500 psi for 30 minutes, then we will bring in the boiler inspector who will witness the test and give us our cold and hydraulic test inspection certificate. When that happens, it will be a HUGE milestone for the 762 Club.
Andy Bennett will then start to make the superheater elements and the header into which they fit.
Finally, he will then make the smokebox and fit the regulator. If all goes well, these items will be finished during the summer so the boiler will be ready to leave Highbridge in mid September so that “LYN” can make a special appearance...
2. Drivers Club
With the boiler coming along nicely, we think we are less than 3 years away from finishing “LYN”, so some thought is going into how we can maximise the income from its first few years. To this end, we are setting up a very special and exclusive club of just 50 members. For an initial outlay of £ 1000, we are offering a chance to drive “LYN” on the L & B in its first year. You will get a full driver experience course but the difference will be it will be on “LYN”. If we can sell the full membership of 50, then we can accelerate the progress and make sure that we finish “LYN” without having to borrow. The first membership has been sold, so why not get your hand on the regulator?
3.Drawings and Design
The team of Ian Gaylor and Mike Nelson continue to do outstanding work from there Cambridge base. Already, nearly 80% of the design work has been completed and Ian tells us that by the end of the year, he will be finished. The team are currently working on the side water tanks and the coal bunker. WE want these big bits completed so that we can put them out to tender (excuse the pun!). We are talking with one or two potential sponsors about getting these made and so the finished drawings are needed soon. Other important parts currently being modelled include the reversing lever mechanism and how the driver will control the cut off of the valves from the cab. It is very important that the driver has the tools to work our highly advanced locomotive and the gradation on the reversing screw needs to be visible and clear.
4. Putting the brakes on!
Well not as far as fund raising goes, but on the locomotive we need to stop the engine from time to time! So the news from the L&:B railway that they will adopt vacuum braking as there principal method of braking allows us to dispense with a compressor and electrics. This will reduce the costs and complexity of the locomotive but we will need an brake ejector and maybe a steam brake.
5. New Orders Placed
In the last week, we have placed new orders with Alan Keef for the full chimney assembly and most of the parts that make up the smokebox. Most of these items are fabrications and Alan Keef will make these over the next few months and then hopefully, they can then be fitted onto the boiler and not stored. More big bits of metal and important, but not too expensive components.
6. Steel Machining and fabrication
We are about to start the serious (and expensive) process of machining and welding lots of precision parts. We hope that we can find some friendly firms who will make a part or two for nothing (or perhaps material only). We have identified a few companies who have indicated that they might help us, but do you know or can recommend any CNC machining companies, preferably with Solidworks, who can take DXF, IGES or STEP files and machine directly from them? If so, please forward their details to Peter Best who will liaise with you to contact your suggested companies. Many thanks.
And finally, any Cows need catching?
We are pleased to end with a photograph of the embryonic front cow catcher being made. We have ordered both the front and back cow catchers as two large and very visible statements of intent. So all North Devon Heifers be warned!
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(News page and last updated: 23 Jul 2017)
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