Might have helped to clarify that 'EM' hasn't actually been 18mm for many, many years, but was expanded to 18.2mm to cope with curves (without necessarily getting into the technicalities of gauge widening, check rails and flange profiles which are more appropriate to your P4 episode).
Hi David, thanks for your comment. It was something I wasn’t aware of. Could you answer me this question why would anyone model in EM when P4 is so nearly the same and is true scale? Andrew
@@andygebbie EM wheels have (significantly) wider tyres and deeper flanges than P4, making tracklaying and construction easier and reducing the need for springing or compensation. It's also possible to re-use OO-Fine wheels for EM, aiding conversion of RTR rolling stock and locomotives. Crossing gaps and flangeways are still overscale, but with proper sleeper size and spacing it can be hard to tell EM and P4/S4 track apart. The 0.63mm gauge variation is really the least of the differences.
Excellent series this, love the interviews and narration too, really well finished and presented and superb subject matter.
Another extremely well put together video. Thank you so much for all the background information that goes with the layouts.
Hi Jim, hope you are keeping well. Thanks for the comment. It is always appreciated.
Might have helped to clarify that 'EM' hasn't actually been 18mm for many, many years, but was expanded to 18.2mm to cope with curves (without necessarily getting into the technicalities of gauge widening, check rails and flange profiles which are more appropriate to your P4 episode).
Hi David, thanks for your comment. It was something I wasn’t aware of. Could you answer me this question why would anyone model in EM when P4 is so nearly the same and is true scale? Andrew
@@andygebbie EM wheels have (significantly) wider tyres and deeper flanges than P4, making tracklaying and construction easier and reducing the need for springing or compensation. It's also possible to re-use OO-Fine wheels for EM, aiding conversion of RTR rolling stock and locomotives. Crossing gaps and flangeways are still overscale, but with proper sleeper size and spacing it can be hard to tell EM and P4/S4 track apart. The 0.63mm gauge variation is really the least of the differences.
Good stuff. Love all the nice weathering.
Hi glad you like the content and thanks for taking the time to comment.
Interesting and informative..cleared up some points for me ..
Hi David, Glad it was helpful! Andrew