South Hills Tunnel -- Street Track Centers & Spiral Eas ement Request

[Dietrich, Robert J.]

Professor Holland Wrote>>

>	Absolutely fascinating information about the tunnel - glad you
>specifically sent this to Bob to encourage him to build this in HO!!! 
>Will be looking for photos of his efforts in *Trolley Talk* some day!

>>Fred Schneider wrote:

> >The gauge line of the inner rails was 5'-0".  Because we are converting
to
> >standard gauge for models,

>	We am?!?!  Not in "O" Scale!  With 1.25 inches between the rails in
"O"
>Scale we are almost perfect Pennsylvania-Pittsburgh Broad Gauge  . .>>

Jim, you mentioned above that Fred sent this specifically to me, so
obviously he is talking about HO which is really, I think, "standard" gauge.


>> this left a rather abundant devil strip of about 26" depending on
>> car width

>	On some streets in Pittsburgh, the distance between the inner side
of
>the two inner rails was 4 feet 4 inches leaving about 14 inches between
>two PCCs or more than 0.25 inches but less than 5/16 inches between two
>PRCo "O" Scale PCCs.  That's mighty close for modelling purposes.

Yeah and that's about 1/8" in HO and people like to run interurban cars on
those modules, I think not!

Bob Dietrich