762 LYN, Woody Bay, October 2017

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.23: December 2014

Yes, just TWELVE MONTHS to go!

Dear All,

Here is tbhe latest on another busy month in the progress of getting LYN in steam by December 2015. We are still on target but we need the remaining drawings as soon as, and we also still need to sell our remainder of our membership as the funds are running low.

1. Cross Head

The Plymouth firm of Cutlass mechanical Services kindly water jet cut the cross heads for us for free. This is what they looked like after they had been cut, two at a time.

2. Whiteland Engineering

a) Cross Heads Now we move to North Devon, and call in at the Bideford firm of Whiteland Engineering to see the cross heads being roughed out. We lose masses of material when we make the cross heads and there is lots of swarf evident.
b) Rods Also shown on their big mill are a connecting rod and a coupling rod being rough machined. Both rods should be finished by Christmas, as should the slide bars.

We will organise transport from our various North Devon suppliers once the parts are all ready, expected to be towards the end of January.


3. Reverser Chassis

Also being cut - this time by Cutlass - is the chassis for the reverser. This heavy and complex assembly is first water-jet cut from plate and then machined, so that it can be bolted together for mechanical integrity and to avoid any distortion that welding would bring.

There are six component parts required, and Cutlass expect to have the individual parts made within the next two weeks. They will then go up to Whitelands to join the shipment planned for the early New Year. The chassis weighs in at a whopping 60 kilos!

4. Pony Truck Balance Beams

Our design team are busy with the final drawings and calculations for both front and rear pony trucks. We will need four large, heavy balance beams which will be cast from a pattern. Our friends up in Sheffield, Peak Patterns, have been briefed and can undertake this big job. More on these parts as time goes on.

5. Dummy Oil Pots

Adrian Porter has again done his magic and made for us the dummy oil pots, which fit onto the motion.

Although they are not functional (as LYN is to be fitted with roller bearings), the locomotive is being designed to "look" the part, so a number of dummy features are being added. No doubt it will not be long after the engine enters service before an unsuspecting drivers oils them up!

Adrian also has made two bronze bearings for us as well.


6. Drip Valve

A huge thank you to Steve Andrews who in his day job, looks after Thompson B1 61264 at the NYMR. He has kindly made for us two super drip valves for the vacuum brake system. Take a look at the schematic and you will see where these two valves go. They are number 8, and we need two of them. I also attach the parts list for the Vacuum and Steam brakes which are now essentially complete.

7. Vacuum Relief Valve

Again, from the same part of the engine, we need a vacuum relief valve. This is an adjustable valve to regular the vacuum so that it does not over create a vacuum. You will see this as item 9 on the schematic diagram. Steve Andrews has kindly donated one to us free of charge. Thanks, Steve.

8. Eccentric Rods

As mentioned last month, we are now on with making the eccentric rods. I attached the drawing last month and now, I show two photos of the material. There are three parts: The rod body, the end block and the rod pivot block. The first two are profile cut by Alan Keef and the third item has been Water Jet cut by Precision Water Jet Cutting from Lyme Regis. Once we have all three parts, they need to be welded and then machined.

9. Crank Pin Assemblies

These mighty and chunky items are now assembled and just ready to be squeezed onto the axle. Don't they look fabulous!

10. Smoke box Door clamps

We have not mentioned the smokebox door clamps or dogs for a while, but these very American items have been made by Patrick Keef, the photo shows three of them being made. I also attach an old photo of LYN where you can clearly see where the dogs holding the smokebox door closed go.

12. Axle Boxes

Busy in Ross-on-Wye, Alan Keef and Son hope to complete the driving wheel sets before the end of the year. The crank pins are now assembled and just waiting to be pushed onto the axle. Similarly, the axle boxes are being assembled and my photograph shows the roller bearings already assembled and just waiting for the seals and cir clips. The axle boxes go on first, followed by the crank pins.

13. Nigel Heath

Nigel owns a super Brigadelok 0-8-0T Sena Sugar Estates 15, Henschel 14968 of 1917 currently on the North Gloucestershire Railway at Toddington as well as an Aveling Roller. Nigel has also been a great supporter of LYN and has made loads of parts for us, charging very reasonable mates' rates. Thank you, Nigel for all of your work.

That's all for now, folks.

It already looks like it's going to be a busy December!

Peter Best

See the current and archived versions of LYNformation here:

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