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Juliet LBSC

Question on Stephenson link

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Adrian Marsh 230/08/2020 22:41:18
6 forum posts
4 photos

my son has recently acquired a Juliet LBSC loco. it needs a little work to get running. i cant find any pictures or drawings of the loco i have. it has a Stephensons link on the outside. think its very early. the link isnt currently setup very well and will only reverse. i have a feeling part of it is backwards.

does any one have any info tucked away. i will add some pictures when in the workshop next

Brian G31/08/2020 08:46:17
777 forum posts
34 photos

Hi Adrian

I saw a photo of one once with outside WaIschaerts', and assumed it used the cylinders from the Baker valve gear version. I doubt I can be any help but must admit that I am interested in learning more as my son has a part-finished Juliet Baker.

I'm afraid the website isn't set up to accept photos directly. You will have to put the pictures in an album before you can link to them. Instructions are here.

Brian G

Edit: Too many "once"s in first sentence.

Edited By Brian G on 31/08/2020 08:47:19

John Baguley31/08/2020 09:17:10
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489 forum posts
51 photos

Hi Adrian,

So far as I know LBSC never described a Juliet with outside Stephensons valve gear, only Baker, so it's unlikely there will be any drawings or information about it. He did build his own version of Tich with outside Stepehensons though and possibly the builder of your son's loco based it on that? I think LBSC did write something on the Stephensons Tich in Model Engineer. I'll have a look and see if I can find it.

John

John Baguley31/08/2020 09:29:41
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489 forum posts
51 photos

Hi again Adrian,

LBSC decribes the outside Stephensons valve gear for Tich in ME Volume 120 Issue 3012. I can scan it and let you have a copy if it would help.The valve gear could have been adapted to Juliet by just altering the length of the valve rod so long as the cylinder ports are set out the same as for Tich.

The valve gear replaces the normal eccentrics with two return cranks and the positions of these are set during the build but they could have moved causing your problems. If the cranks are set correctly then the only adjustment of the timing is by setting the valves.

John

Edited By John Baguley on 31/08/2020 09:30:10

Nicholas Farr31/08/2020 10:55:43
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2962 forum posts
1335 photos

Hi Adrian, Juliet GA with Stephensons link. All the valve gear being inside the frames

juliet 1.jpg

With outside Baker valve gear.

juliet 2.jpg

Tich with Walschaerts gear.

tich.jpg

Regards Nick.

Edited By Nicholas Farr on 31/08/2020 11:13:41

Nick Clarke 331/08/2020 11:31:46
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1247 forum posts
49 photos

Hi Adrian -

Is there any chance that you could post a picture of the valve gear?

The way the link in Stephensons valve gear is suspended can produce symptoms such as you describe - ie running badly or not at all in one direction. This is an issue with at least one other LBSC's designs.

It is a bit puzzling at first how to post pictures on the site, but this guide should help **LINK**

Take care, Nick (another one!)

Edited By Nick Clarke 3 on 31/08/2020 11:34:42

John Baguley31/08/2020 12:01:30
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489 forum posts
51 photos

Hi Adrian,

Here's the layout for the Tich valve gear so you can compare it with your Juliet:

tich outside stephensons layout.jpg

As Nick says, it could just be badly designed. LBSC admiited that he didn't know a lot about valve gears and designed them by making mock ups with card, tin and pins. In fact, looking at the fact that the expansion link is suspended from the bottom, the valve events could be pretty awful.

John

Adrian Marsh 231/08/2020 20:16:16
6 forum posts
4 photos

Thanks. Johns picture looks like mine.

I will do some cad work I recon and see what we can do.
My 11 year old son was getting frustrated that he couldnt get the timing

Adrian Marsh 201/09/2020 09:35:12
6 forum posts
4 photos

7e4df3df-168f-43e8-b48a-169e71fb6e1f.jpeg

duncan webster01/09/2020 10:16:22
3466 forum posts
63 photos

Picture shows a Tich, not Juliet.

For the comprehensive work on Stephenson's get a copy of Don Ashton's book, or go to **LINK**

Nicholas Farr01/09/2020 10:43:41
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2962 forum posts
1335 photos

Hi Adrian, to be honest, I think you actually have a Tich, not a Juliet, the wheels look too small and the frames look too short. The wheels on a Juliet are 3" on tread and the frames are 17 1/2" long, where as the wheels on a Tich are 2" on tread and the frames are 12 7/8" long.

Regards Nick.

P.S. Duncan posted while I was looking up the measurements.

Edited By Nicholas Farr on 01/09/2020 10:48:56

Adrian Marsh 201/09/2020 17:40:54
6 forum posts
4 photos

fea79913-81fc-490d-afef-3c2d368d2446.jpeg

Adrian Marsh 201/09/2020 17:44:23
6 forum posts
4 photos

Thanks for help

Wheels are 2” and frame longer that 13” so must be a bit of a mashup. Only going from what I could see on the web and the guy it’s from said it was a Juliet.

will look through the link.

Nicholas Farr01/09/2020 18:42:53
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2962 forum posts
1335 photos

Hi Adrian, if you are measuring over the buffer beams, the Tich should be 13-1/8". The picture above with the boiler, looks like the Tich variation that LBSC described in Vol. 118 issue No. 2961, 20th February 1958, pages 238 to 240 and 250. The GA illustration, shows the valve gear that's on your photo above.

Regards Nick.

Edited By Nicholas Farr on 01/09/2020 18:44:46

Adrian Marsh 201/09/2020 20:16:29
6 forum posts
4 photos

Thanks Nicholas that’s a great help.

This my be a blond question but how do I find the back issues from back then?

Nicholas Farr01/09/2020 20:36:23
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2962 forum posts
1335 photos

Hi Adrian, you could enquire at classified adds other options could be Ebay or you could even ask in the latetest "wanted" ads on the right hand side of this page. The original series for Tich was in Vols 100 to 105.

Regards Nick.

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