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Trials and tribulations


dibber25

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This is my first attempt at a blog, so if I get it all wrong, I apologise. Just felt it was time to share the experience of trying to adapt bits of the old layout to suit the new space. Essentially, this is 'Chris Leigh Unplanned'. I've always told people that planning a layout is essential. So just why I decided to go ahead without a plan, I'm not sure. The old (HO) layout was round the walls of a room and viewed from inside. Now its an island location, viewed from the outside. That meant that all the curves go the wrong way, for a start. I also want to build a 'OO' layout inside the HO, the two separated by a backscene. Got some nice kitchen units to provide cupboard space under one side and put half inch ply on the top. Then decided to lay hidden loops on the cabinet top, 7in below baseboard level, as need somewhere to 'store' trains. A pair of 1 in 30 inclines connect these hidden loops to the baseboard level. As they climb, the inclines cross, one up and one down, between the OO and HO layouts. I'm not sure I could have drawn a plan, even if I'd tried. In the end, I cut countless plywood curves and numerous 3 by 1 supports and fitted bits in as I went. It's now about 75% complete but the as yet unbuilt section includes the lift-up access to the central area and will be even more complex. I'm wondering just what I've got myself into......

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  • RMweb Gold

Fascinating approach Chris and it looks to be working judging by the pic. I will however be very interested to hear how the gradients work out operationally - what radius are the curves?

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Yes, the curves are the big problem. I have some Walthers Empire Builder stock which is recommended for no less than 2ft radius, which is what I've tried to use as an absolute minimum. However it is tight to 2ft on the far end and there's no way that stock or any 12-wheel diesel will go round it. At the moment I'm trying to decide whether I go for only using eight-wheel diesels and the 'more flexible' rolling stock on that ramp. There isn't room to re-lay it with a wider curve. I've tried some super-elevation without success and I may do some subtle adjustment of the slopeas it seems to be the vertical displacement of the outside rail that causes the problem. At the nearer end I've ensured that the curves are closer to 3ft radius. All too complicated! If I hadn't tried to re-use bits of the old layout I would have had the freedom to lay it out as it needs to be. Can't discard the big trestle bridge, though, its one of my best efforts.

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The outer curve in the picture is over 4ft radius and the inner one on the flat plywood is about 2ft 6in-3ft if I recall correctly. The problem curve hadn't been installed when the picture was taken. It runs underneath the outer curve but cuts through to the inner curve and climbs at the same time

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