762 LYN and train approaching Woody Bay,  2004, Eric Leslie

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 introduced this on-line update feature in early 2013. This page, updated around once a month, will provide brief news snippets, images and general "Lynformation" on our progress. Please come back regularly for the latest updates.

(just hover your mouse over images to see captions, click to see a larger version where available):


See the current and archived versions of LYNformation here:

LYNformation Bulletin No.55: 8 June 2017

Hello LYN Lovers,

Here is a shortish edition just to keep you up to date with what's going on up to and including 8th June:

1. Tony Conway

Tony is one of the 762 Club's stars, our master welder who has already fabricated and made the GPCS pipework, the main steam pipes and the ejector exhaust. Tony will have plenty more to get stuck into as soon as the boiler is back on.
 

2. Water Balance Pipe Drain

One of the small jobs that Tony completed recently was the assembly and fabrication of the drain from the balance pipe that connects the two water tanks.
 

3. GPCS

... or Gas Producer Combustion System! This mechanism takes some of the exhaust from the saddle and feeds it through a pipe to the ashpan. Then the gases are mixed with live steam and fed into the ashpan via little jets. This means that you can get a controllable and direct bottom feed under the grate, which enhances the combustion of the coal. This improves economy and reduces clinker. Here are some images of the pipework and the ashpan where you can see the jets.
     

4. Pipework Brackets

Richard and Jez have been busy plumbing up the front end of the loco. They have constructed some very neat brackets through which the small bore 1/4" and 3/8" pipework runs.
 

5. Pipework

Now we turn to the actual pipework. Some of these images were taken 24 hours apart, but all show the care and attention with which the team are make the pipework runs neat. By now, all of the front end of the loco will be plumbed and the lines will be back towards the cab.
     

6. Piston Rod Final Machining

Now both the inside and outside motion has been fitted, and the final position of the valves and pistons calculated, the final machining of the piston rods has taken place.
   

7. Piston Rod Cotter

Both cotters can also be finished now and one of these was hot off the tool!
 

8. Final welding of slide bar brackets

Again, now that the geometry of the engine is finalised, another bit that has been completed is the final welding of both slide bar brackets.
 

9. Boiler Mounting Bracket

This small part is unlikely to be seen again for quite some time. The boiler sits on this bracket.
 

10. Mechanical Lubricator

This is now all plumbed in and ready to work. Eventually, the blue paint will be replaced with black.
 

11. Boiler Painting

Here are a few images of the boiler being painted with a protective heat resistant black paint. It has had two coats now and is ready to fit to the frames.
     

12. Chimney

Also in the paint bay is the chimney, was just about to get the same treatment prior to final fitting.
 

13. Ashpan

Richard has been hard at work make the ashpan door arrangements to control the door. This will be operated from the cab and needs a linkage to control the door flap. Also, the spark arresting screen has been fitted.
   
     

14. Die Block Lubricator

This complex arrangement was made by Longshore Engineering some time ago. It is now fitted to the rocking arm and get oil down to the die block. There is one on each side. The oil feed comes from the lubricator that will be mounted on the tanks and also feeds the slide bars.
   

15. Superheater Elements

We have run into an annoying issue in that we had hoped that when we had the boiler delivered, the superheater elements had been blued in and fixed. Sadly, we have found out that they had not been secured. This means that Richard has to undo all of the elements and individually blue each one in. There are 11, so this will take some time. This unforeseen extra piece of work will delay the boiler being put back on till at least Tuesday 13th June. We have so little spare slack in the program but we are still committed to the 8th July as our first members steaming day.

16. Sand Jets

These have now all been made and fitted. They just need the steam supply plumbed in and the flexible hose down from the sand-boxes.
       

As time gets closer, I will try and get a further LYNformation out in two weeks' time.

It's all getting rather scary!

Peter


See the current and archived versions of LYNformation here:



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