Minimum radius for long trains?

Robert · 2005-10-03T10:06:15+00:00

I'm trying to fit the maximum length of double track main line into atailchaser layout set diagonally across a 12ft square loft space. Thelargest storage sidings at the back will accomodate the sort of train I'dlike to run, i.e. a locomotive and 9 or 10 BR Mk 1s. What is a realisticminimum radius for the 180 degree turns to the scenic part? These curveswill be horizontal.Thanks,Robert