The small Barclay 0-4-0WT locos were fitted with Walshaert’s outside motion, arranged for slide valves (outside admission). The gear was simply made, with the minimum of frills and the radius rod had an extended round section that came out backwards from the quadrant (link), and ran in a guide, attached to the lifting link.
See page 339 of REVIEW 72 for a notated diagram of Barclay Walshaert’s gear.
You've probably guessed by now that a lead/silver mine is more likely in Scotland than a gold mine. The suggestion of the original line at Wanlockhead is a possibility. Attached, if it works, are two pictures of the loco, one the makers picture and what I believe to be the only picture of it in use in 1931. It was basically a small version of the Barclay E class. Kitwise there is a white metal kit from S & D models, sanddmodels if you try Google. That is for the bigger version with the tank or bunker extending in front of the cab and intended for 16.5mm gauge. It takes a Mehno? mechanism. You will be on your own for anything near the actual valve gear. Incidentally can anyone christen it, is it Walscharts?
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The other that might be a thought is the Laxey Mine Railway, you'll find that on the web which was also the source of the attached pictures.
Hi Baz, The closest prototype that I'm aware of would be the 20" line that ran in the lead mines at Leadhills, just off the M74. These lines are not to be confused with the 'Leadhills and Wanlockhead' 2-foot gauge line, which has been layed on an old standard gauge trackbed. There is a museum on the lead mining site which is well-worth a visit and has some of the original tramway intact, plus some waggons. The museum has a history of running out of funding and then closing for a while, so I'm not sure of its current status.
Another option would be to visit the Almond Valley museum near Livingston, which features shale mining. There was very little use of 2-foot gauge in Scotland for mining, but there was a lot of 2'6" used for coal mining. There was also a 3'6" overhead electric line at one of the bigger shale mines. The museum has a 2'6" gauge line on the site, which uses ex-coal mining locos, including a very nice little Barclay diesel.
Hope this helps?
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As he says… hope this helps…?J
Barry
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From:?O14@...?[mailto:O14@...]? Sent:?Wednesday, February 22, 2017 1:47 PM To:?O14@... Subject:?[O14] New Layout
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Our club is building a new 7mm scale layout and I have agreed to build a small gold mining narrow gauge line and it's stock based on practices used in Scotland.?
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This is a subject I have very little knowledge about, can anyone recommend where I could source some prototype information and where I could obtain suitable kits or parts suitable to build prototype models from?