Gap between track

[Steveuk]

Hi
Apologise if this has been asked before, just finding feet here.

My question is, I am laying two tracks but what is the spacing between tracks please.
Hope I worderd this correct.
Thank you
Steve

[Zakalwe]

for n gauge the prototypical centre to centre is 25mm, the peco red spacer SL-366 help nicely with this

you will need to widen this gap a little for tight corners to allow for long  bogie coaches (i think MK3 coaches or voyagers have the biggest overhang ) to be able to pass without hitting each other.

[oscar]

Here:-

http://www.peco-uk.com/product.asp?strParents=3309,3310&CAT_ID=3315&P_ID=17081

Settrack gap at the bottom.

[Newportnobby]

A lot will depend on what size points you use as I'm assuming you are talking straights as well as curves? The geometry of the points will dictate the gap.

you will need to widen this gap a little for tight corners to allow for long  bogie coaches (i think MK3 coaches or voyagers have the biggest overhang ) to be able to pass without hitting each other.

This is so true. I'd suggest you use the maximum radius curves possible as well, dependent on what you intend to run.

[PLD]

On the prototype, there isn't a simple single answer, the spacing can and does vary with geology, history and designed line speed being among the most significant factors.

On softer ground, lines may be wider spaced to spread the weight, but in a cutting may be placed as closely as possible to reduce the extent of the earthworks.
Ex broad gauge lines are generally wider spaced for obvious reasons, and high speed lines are usually wider spaced.

there was a minimum laid down by the board of trade which changed from time to time but is generally quoted as 10'6" centre to centre which equates to 21.5mm in N gauge, but in practice, 24-28mm is more desirable, especially given our tendency for sharp curves.

[Greybeema]

The gap doesn't need to be constant.  You can run the lines closer on the straight opening up as they go into any tight curve.  Remember though that if you are laying tracks in a fiddle yard - give yourself enough room to fiddle...