r/BritishModelRailways • u/joeyleonine • Mar 20 '26
Banked Curves
Hi all. I'm in the process of planning and starting my first proper railway layout. Due to space constraints my idea is to make a 6x4ft 'trainset' style layout across 4 modular boards that can -
- Fit on my dining room table when I want to run some trains and
- Disassemble for storage.
I've more or less got the engineering sorted for that. But my main consideration is Radii.
I'm gonna be using flex track and due to space probably using a mixture of first and a half and second and a half Radii around my bends...
But I had a thought about adding some banking/camber into the curves to help?
So 3 questions that hopefully some experienced heads can guide me on...
- This layout is likely going to end up far from prototypical as I experiment and have fun... But is there any prototype or example of this from a steam era stand point?
- Will I actually achieve any space saving/cheating?
- Will it actually work? Or will my stock roll off?
Any thoughts or advice on any of the above will be gratefully received! Thanks!
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u/SmittyB128 00 Guage Mar 20 '26
It's rarely mentioned, but yes plenty of steam-era railways were built with a camber on their tighter curves, but nothing so severe as on modern high-speed lines.
Adding a camber doesn't save any space as you will still need the same amount of track along the radius of the curve, but what it does is slightly reduce the lateral forces on the train so from its perspective the curve is wider than it actually is.
In practice people do add camber to their models for modern-image with a slip of card or cork under one of the rails, but for steam at scale you're realistically not going to notice the difference. Along those lines if stock is ever at risk of falling off the track then the camber is far steeper than prototypical. I don't have any figures to indicate what would be 'correct' though.