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Member postings for John Baguley

Here is a list of all the postings John Baguley has made in our forums. Click on a thread name to jump to the thread.

Thread: Convex buffer face
21/09/2018 00:35:56
Posted by Mick B1 on 20/09/2018 21:46:16:

I've never actually done this, but an experienced turner showed me a method using a pointy rod the length of the required radius located in deep dot-punches below spindle centreline on headstock and crossslide chuckside face.

You use the saddle handwheel to keep the radius rod in contact both ends, whilst traversing a tool across the workface. The saddle moves away from the chuck to generate the radius. You arrange the tool so that it reaches centre when the radius rod's parallel to the bedways.

It's fiddly, but it's simple, accurate and I've seen it work.

Edited By Mick B1 on 20/09/2018 21:49:23

That's how I do mine:

buffer2.jpg

The method was described by Tim Coles in ME Issue 4277.

John

Thread: oscillating disc valves
03/05/2018 08:22:29

It looks to me that the cylinders are actually conventional slide valves but the valves are round instead of rectangular. LBSC used round valves on his Ayesha. The last photo shows the round valves connected to the valve rods.

The round parts that I think you are thinking are the valves are actually the port faces and the ports are curved to match the circular valve. The large central hole is the exhaust port Are you sure that these rotate? It's possible that the port discs were made separately for ease of manufacture and remain stationary once in position. I can't see a reason at the moment why they would need to rotate. Are there grooves under the port face to connect the ports to the steam ports drilled in the cylinder?

The loco may well have conventional valve gear such as Stephensons.

John

Edited By John Baguley on 03/05/2018 08:23:16

Edited By John Baguley on 03/05/2018 08:25:11

Thread: Unknown castings
01/05/2018 18:21:03

I would say they are definitely for the 3½" gauge Britannia by LBSC.

John

Thread: Trolley wheel arrangment
14/04/2018 18:14:46

If you want a really free running design for a driving truck or passenger car then look at the design by David Hudson that has self steering axles. He described the theory and construction in ME for 2003. His is by far the best design I've come across and used. Our club driving trucks and passenger cars are to his design and they are very free running.

Our club went to the Burton track some years ago and one of our members took his Hudson design driving truck. At the end of the day, we decided to see just how far it would go on it's own. It was given a good push and did a complete circuit of the Burton raised track and would have carried on if we hadn't stopped it!

I believe that Dave Noble still offers complete kits for the driving trucks as well as individual components.

I'm just about to convert my normal 4 wheel fixed axle truck to the Hudson design as at the moment it has too much drag for small 2½" gauge locos to pull around easily.

John

.

Thread: Boiler test info
09/02/2018 10:56:12

Hi Paul,

The boiler would need to be removed and also the cladding so that it can be given a visual inspection. It would then require a hydraulic test to twice normal working pressure to make sure it is sound. This assumes that you would want to run the loco at a club or anywhere in public.

You can usually tell just by looking at a boiler and the soldering whether it has been well made or not.

John

Thread: What Regulator type.
09/02/2018 08:51:59

For my screw down regulators I make the seat part from a bearing grade PEEK. This gives a perfect seal and the valve never seizes shut when the boiler cools down. I find the control to be very gradual and smooth unlike some of the regulators on locos I've driven where it's all or nothing!

The thread on the one for my Helen Long uses a 3/8" BSW thread and for normal running the regulator is barely cracked open, no more than 1/8 of a turn. Any more than a 1/4 turn and the opening makes no difference as the steam flow is controlled by the valve gear rather than the regulator. The pointy bit has an angle of 120°.

346.jpg

I added the spring to take up any backlash in the thread but found it wasn't necessary.

And yes, the tube is brass but it will probably outlive me! Copper would have been a better choice.

John

Thread: Steel or aluminium track
10/10/2017 00:48:58

IMHO aluminium track is absolutely dreadfull stuff! I hate it. It soon gets a very greasy film on the top that reduces adhesion to next to nothing. Give me steel track any day!The only advantage apart from cost is that it gives quieter running than steel.

John

Thread: Off to the races!
03/09/2017 01:04:16

Hi Dean,

As Brian says, you are setting up for a lifetimes work with this!

You will find that a few of the designs were only very briefly described in the magazines - a GA drawing and maybe a boiler drawing if you are lucky. We do have copies of most of the construction articles though if you need them.

Re Lucy Anna - we have copies of the articles in Model Maker and also the drawings.

Re Liberation - I think this is a mistake in Brian Hollingsworth's book. Certainly I can find no trace of it and the article mentioned in English Mechanics does not exist.

Re LBSCR - I think this may be the Southern Region 0-4-4T (2396) which I think is the same loco as Victoria.

Hollywood Annie is an Americanised version of Annie Boddie and was briefly covered by 4 pages in Model Engineer.

Cleopatra was covered by a single page in ME and had just a GA drawing.

Hope that helps,

John

Thread: LBSC's Designs
17/08/2017 20:08:11

Richard,

You will often find that there are more than one set of drawings for many of the LBSC designs. Kennions (as it was then) produced their own drawings as did Model Engineer. Donaldson and Piper also did them. Unfortunately, there are often quite a few differences between them!

John

Edited By John Baguley on 17/08/2017 20:09:48

Thread: LBSC Memorial Rally
17/08/2017 20:02:52

As it is the 50th anniversary this year of the death of LBSC, it has been decided to replace the usual Curly Bowl competition with a special commemorative rally. This will be held on Sunday September 3rd at North West Leicestershire SME from 10am.

The track is in the grounds of the Hermitage Leisure Centre (behind the 3G court), Hermitage Road, Whitwick, Coalville, Leicestershire, LE67 5BZ. The track is steel, 1250' in length, and has 2.5, 3.5, and 5 inch gauges. Everyone welcome. Refreshments will be provided. Bring your LBSC design loco for a run or just for display.

John

Thread: LBSC's Designs
17/08/2017 19:30:03

Hi Neil,

That's interesting. I didn't realise that ME only held the copyright for 25 years.

I would hazard a guess that quite possibly no one owns the copyright to the actual LBSC designs as I doubt anyone would have inherited them. He and Mabel had no children so there would be no family to inherit the copyright. He was very close to Mavis Harriet and she inherited several of his locos, including his own Tich and of course, Ayesha (now owned by the N25GA). but I wouldn't think he would have passed the copyright onto her.

The Association has been given quite a few sets of his original pencil drawings for his well know designs in all the gauges. I haven't had chance to go through them all yet to see exactly what we have, but off the top of my head we have the drawings for Virginia, Betty, Pamela, Iris, Petrolea, Miss Ten to Eight, Netta, and several 2½" gauge designs including Rose.

They are all in very fragile condition but I intend to scan them when time permits before they disintegrate altogether. Not an easy task as they are pencil on what looks like lining paper so the contrast is poor.

LBSC always used to say that he was a terrible draughtsman but some of his drawings are a work of art and well worth hanging on the wall. Apparently, he used to send odd drawings to his friends as a present. The drawings for Rose were given to us by a gentleman in the USA and he had acquired them from someone else etc.

We do hold copies of the drawings for virtually every 2½" gauge design that ever appeared but we do take care not to sell copies of those that we know are sold by others such as Reeves or GLR Kennions. We hold a few that I think ME have lost over the years and seem to have disappeared from sale e.g. Nigel Minor.

When Bonds of Euston Road closed they passed all their remaining castings and patterns onto us and gave us permission to use their 2½" gauge designs so I suppose you could say we now hold the copyright to all of the Bonds 2½" gauge designs.

John

17/08/2017 09:43:33

I don't think you will have any problems unless you decide to sell copies of your CAD drawings. Then you probably will be breaking copyright, certainly in the UK.

There are several companies in the UK that sell LBSC drawings e.g. Reeves and GLR Kennions. They would probably claim that they hold the copyright to those drawings. I presume that Model Engineer magazine still hold the copyright to the majority of the LBSC designs as they were published in either Model Engineer or English Mechanics.

There is no danger of the 2½" gauge designs dissapearing as the National 2½" Gauge Association was formed to make sure that all the 2½" gauge designs, not just those by LBSC, are preserved for the future.

One of my 'to do list' items is also to produce 3D CAD drawings for all the 2½" designs, mainly to find and correct all the errors in the drawings and improve the valve gears. I've made a start but there is a long way to go!

Good luck to you on your project.

John

Thread: TIG welding copper boilers.
07/08/2017 03:33:34

Your biggest problem will be getting it tested if you want to use the boiler in public. The average club boiler inspector won't be qualified to test a welded copper boiler and probably won't touch it with a barge pole, especially if it is welded by a non coded welder. You are going to be looking at having it tested by a relevant professional tester at possibly considerable expense.

Good luck if you do decide to go ahead though.

John

Edited By John Baguley on 07/08/2017 03:34:13

Thread: Investment casting
26/07/2017 16:59:09

Jason,

I don't think that is the Abby who posts on the forums. That will be Dan Hobbs of Union Steam Model Company

He does do investment casting and may be able to help with a small run.

John

Thread: Liquified Poison Gas
21/07/2017 21:57:47

Yes, he was refering to methylated spirits.

John

Thread: HF fluorescent lights
12/07/2017 11:33:29

That only applies to ordinary fluorescents working at 50Hz. The modern high frequency ballasts work in the KHz range and don't cause any stroboscopic effect.

John

Thread: LBSCs victoria
09/07/2017 05:10:08

Hi Matt,

Yes, I see that I did send you a set of drawings back in May,

On the original sheet 1 the position of the rear cylinder mounting holes was shown as 4-5/8" from the driving axle but this distance should have been 4-3/4". This moves the cylinder mounting holes 1/8" further forward.

enlarged part of sheet 1.jpg

I think there have been a few versions of Rose built but I don't have any photos of any of them unfortunately. Is yours the coal fired version or the meths fired?

John

08/07/2017 20:00:15

Having looked into it even further, it seems that although I sent an amended drawing to the person who was in charge of the N25GA drawings at the time, the sheet with the error may not have been replaced with the updated one and so we continued to sell the drawing with the error. blush I can only apologise to anyone who bought a set of the drawings. The drawings that I sent to Marc Horowitz were the updated ones which is why he never had a problem,

John

Edited By John Baguley on 08/07/2017 20:06:08

08/07/2017 19:05:47

I've just had a look at the relevant page on my website and I did make a mistake in the position of the 4 holes for mounting the cylinder. The error was corrected in later versions of the drawings.

John

08/07/2017 18:30:53

Hi Matt,

Out of interest, which drawings are you using for Victoria?

I produced a set of CAD drawings which were based on an original set of blueprints by Donaldson and Piper. I've had a quick look and it looks as though there should be plenty of clearance between the axle box and the cylinder block. The flange on the axle box may come close to the cylinder end cover at the top of it's travel though.

I have got a set of original castings for Victoria myself but the build is on the 'roundtuit' list! Steve Eaton built a coal fired version some years ago which has hauled him around the Chesterfield club track. It needed a bit of help starting off but managed to get around without further assistance.

Marc Horowitz also built a Victoria to my CAD drawings. I asked him to let me know if he found any errors or problems but he didn't mention finding anything wrong (unless he didn't bother to tell me)

Re Rose - I have the original pencil drawings by LBSC which were kindy donated to the 2½" Gauge Association by a gentleman in the USA. They are a work of art and really nice to look at. They show that LBSC was much better at drawing than he made out in his articles. I've heard that he used to send some of his drawings to friends as gifts.

John

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