00 roundy-roundy - Tawbridge

by 10800

original page on Old RMweb

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Comment posted by beast66606 on Tue Jul 21, 2009 11:17 pm

As this thread has been resurrected I have only just noticed this

Fixed distants were provided when the speed limit was 40mph or less (in theory) - although some goods line had working distants with far lower limits.

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??? posted on Wed Jul 22, 2009 10:37 am

Thanks for the clarification Dave - all this probably means there won't be one

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??? posted on Thu Jul 23, 2009 5:08 pm

Just for a bit of fun (and some checking) I dug out some of the proposed stock for Tawbridge to put on the draft Templot covering the curved fiddle yard entry at one end. Apart from getting a feel for scale it was also a useful exercise in seeing how tight the curves could be off-scene without compromising vehicle separation on the straights too much (and the coupling extension devices used by Bachmann and Hornby on their coaches are helpful here).

At the moment the ruling radius is 30 inches but I reckon I could come down to 27 without causing too many problems.

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Comment posted by westrerner on Sat Aug 01, 2009 7:48 pm

Its good to see its beginning to lift of the planning stage.

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Comment posted by The Stationmaster on Sat Aug 01, 2009 8:15 pm

From what of that line I knew and can otherwise recall I don't think there were any fixed distants and a quick check confirms that there were no fixed distants on the mainline between Cowley Bridge Jcn and Devonport (nor were there any colour light distants - I think the most westerly colour lights on the LSWR mainline prior to singling were either Crewkerne (after the new 'box opened) or possibly a distant signal in the vicinity of Honiton Tunnel.

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??? posted on Sun Aug 02, 2009 10:30 am

Spaceboard purchased last week, now into the details of board design and configurations - trip to the timber merchants for ply and 'no more nails' soon, then firing up the bandsaw in the garage.

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Comment posted by number6 on Sun Aug 02, 2009 10:50 am

Exciting stuff! Can't wait. You can make all the mistakes and I'll learn!

cheers Raphael

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??? posted on Sun Aug 02, 2009 11:53 am

As was said no doubt by most first generation industrialists outside the UK ...

The main design issues are having the foamboard for the two main scenic boards at the front dropped by 100mm or so to allow for the river crossing and associated scenery, with the trackbed carried across these on ply supports. Board ends probably of 9mm ply to accommodate the dowels, with 6mm for the sides and trackbed. Ply surrounds will be deeper than the foamboard for wiring and to allow for the scenic drops.

At the moment I am looking at just one long loop at the back for each of the two lines. One road in each direction will accommodate ply cassettes (two per track) so that shorter trains or sections of trains can be lifted in and out. Not really enough room for lots of sidings and pointwork. Cassettes will be up to 1 m long with 9mm bases and 6mm ply sides glued so that the ply directions are in opposition for rigidity. The back boards will therefore have to drop a few mm with respect to the 'running boards'. I'll try and put some sketches up when I know exactly what I am planning.

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Comment posted by westrerner on Sun Aug 02, 2009 8:05 pm

The loop and cassette idea seems very much an Ian Rice idea. Was hoping to do it on wencombe but settled for 5 loops.

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??? posted on Sun Aug 02, 2009 11:21 pm

Might have been - not much in this game that's really new. I'm just thinking through what I need to do for my own purposes.

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