Re: Inter track distances
- From: Greg Procter <procter@xxxxxxxxxx>
- Date: Sun, 23 Sep 2007 09:54:25 +1200
{R} wrote:
I want to build a crossover [2mm scale] but I don't know and having
difficulty finding out the distance between tracks.
Short of getting in the car and going down to the Spa Valley Railway
[LBSCR/SR Tunbridge Wells] 1960 ish can anyone tell me the distance between
tracks ? OR where to find such information ?
{R}
Any answer is going to be:
a - a generalization.
b - era dependant.
c - situation dependant.
d - probably wrong.
The individual founding railway companies set their own standards. They
probably set different dimensions for mainlines, branches and yards.
Since it is a major job to realign two parallel tracks given that the
sub-bases would have to be rebuilt, the tracks tended to stay the same
distance apart until such time as there was a real need to change them.
An illustration, I was watching a BBC history programme which questioned
why the properties/shop fronts in a street in some town in Britain were
all of precise equal width but to a dimension which wasn't a round
figure in feet and inches. They traced back the subdivision to the time
of Roman occupation and the dimension to a logical dimension in the
Roman mesuring system. My point is, some dimensions remain long after
the logic for their adoption is forgotten.
German track spacing is variously 3.75m on prussian branch lines, 4.0m
on early main lines, 4.25m on 20th century main lines and 4.5m (minimum)
on ICE lines. New Zealand Railways was 11 feet, increased to 12 feet
around 1905.
None of that answers your question but it might help explain
discrepencies in other answers you might get. ;-)
Regards,
Greg.P.
.
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