[modeleng] Re: Scale
- From: Alan Stepney <alesara2@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Wed, 25 Jan 2006 21:56:49 +0000 (GMT)
I believe that Hy, Greenly was responsible for that as
well as many of the smaller guages.
Dont remember why he picked that, although I think it
is one of his books.
Alan
--- Ron Head <ron.head@xxxxxxxxxxxxx> wrote:
> Hi John
>
> The usual scale for 3.1/2" gauge is 3/4" to the foot
> (i.e. 1:16) - unless
> perhaps the prototype is 2'-0" gauge, in which case
> 1.3/4" to the foot is
> appropriate.
>
> I think the various gauges have their origins in
> Gauges "0" (1.1/4") and "1"
> (1.3/4"), laid down about 100 years ago by pioneers
> such as Basset-Lowke.
> In the days before pocket calculators, designs were
> scaled up or down by
> simple whole-number multiplication factors. Thus
> "00" is half of "0",
> 2.1/2" is twice "0", 3.1/2" is twice "1", and 5" is
> four times "0".
>
> The one that baffles me is 7.1/4", which should
> either be 7" if it is meant
> to be four times "gauge 1", or 7.1/16" if it is
> meant to be one eighth of
> 4'-8.1/2". No-one has ever satisfactorily explained
> to me where the odd
> quarter of an inch came from!
>
> Regards
> Ron
>
>
> ----- Original Message -----
> From: "John Walford" <jwme@xxxxxxxxxxxxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Tuesday, January 24, 2006 6:10 PM
> Subject: [modeleng] Scale
>
>
> > I've been in contact with someone who wants some
> model wagon wheels
> > scale 1.75in to the foot. when I queried this, he
> said it was to
> > match 3.5in gauge rolling stock. Does anyone know
> the origin of all
> > the apparently odd, model railway gauges.
> >
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