... I have just found out Peco teack is 33mm posted: 20 Feb 2012 12:41 from: Martin Wynne Hayfield wrote: I want to use 7mm sleepers with code 75 bullhead rail and chairs to 00-SF gauge The problems I can see are that the sleeper ends are too short, and that as I have selected 0 gauge the rails are too thick. In addition what would the best track centers be, I have used 50mm which is a tad too narrow. Hi John, Does this look any better? 2_200722_330000000.png I'm not entirely sure that 00-SF is a good idea for this in view of the sharp curves. At 1.0mm flangeway you would be modelling S7 narrow gauge and for that you would need to work to S7 wheel profiles and tolerances. 00 gauge commercial wheels and back-to-backs may not be suitable for 16.2mm gauge at these radii. (The attached file is for 16.5mm gauge 00-BF flangeways.) Code 75/82 4mm rail is equivalent to 1.57" wide in 7mm scale. So I ...