Railroad related web content provided as an educational volunteer effort of the American Passenger Rail Heritage Foundation (APRHF), a 501(c)(3) non-profit organization. To help preserve passenger rail heritage click here to join today! Support APRHF by shopping at Amazon Smile!
Custom Search
HOME APRHF TRAINWEB.COM .NET .ORG .US FORUM FACEBOOK NEWS LINKS TRAVEL RAILFAN MODEL JOBS PARTY
TrainWeb Reports & Web Sites: Featured Today! Previously Featured Slideshows Highlighted Past The Big Stories Directory
"#FF0000">

The Geologically Improbable Railroad


A Garden Railway Adventure

[ Home ]


The Geologically Improbable Railroad is an outdoor "garden railway" although there is not much garden yet. The whole thing is located in Torrance CA.

A little "history"

About 1950, the GIRR extended off the Santa Fe main line into the trackless desert wastelands with the main target being Geologically Improbable Mountain, the site if a unique mine which is still to be fully developed. Either coal or ore is mined, depending on which cut of cars is spotted at the mine.

Much of the line skirts rock faces that are almost completely quartzite, an unusual material to find in car to house sized boulders.

The railroad is counting on a town and other business to sprout up near the line, construction has started but is proceeding slowly. Mostly structure and vegetation free terrain still abounds.

The railroad is laid with inconceivably heavy 200+ lb rail and the main line extends as a loop a little over a scale mile long between the mine and a stub and engine yard. A wye near the entrance to the yard also feeds a branch line to a staging and storage yard within an adjacent structure. A projected town site has been established but is as yet undeveloped.

The overall site size not including the branch is about 20' x 50'. The railroad is sometimes run with a Train Engineer controlling track power with cab control and interlocking turnout controls. DCC control is now more common as much of the GIRR motive power has been converted to DCC. The original interlocking turnout control system is still in use.

Equipment consists of mostly 1:29 scale rolling stock and engines from Aristo, Lionel and some 1:24 scale stock from Bachmann, Also included is a Bachmann 1:20.3 36 ton Shay.



The GIRR control equipment is enclosed in a closet at the back of the house. All the equipment except for the actual power supplies are mounted on the back of the door for easy access. The layout is completely controlled by walkaround remote control using the Aristo Train Engineer.

All the turnouts are controlled by an Interlocking Route Control System such that one route command from the TE (two buttons) aligns as many as seven turnouts and routes power accordingly. This is accomplished with Aristo ART-5474 Remote Accessory panels, some custom circuitry and a diode matrix. Most of the wiring and some of the small circuit boards are to adapt the currently available ART-5474 accessory panels to the diode matrix. When the ART-5475 comes out, only a handful of relays and diodes would be necessary to establish a interlocked route control system.


GIRR construction photos


[ Home ]

This page has been accessed hit counter times since 30 Oct 1999.


© 1997-2001 George Schreyer
Created Sep 18, 1997
Last Updated Apr 21, 2001

View TrainWeb.US Stats

Click below for pages in the directory of TrainWeb sites:
0-9 A B C D E
F G H I J K
L M N O P Q
R S T U V W
X Y Z
CLICK HERE FOR THE FULL CATEGORY DIRECTORY

Visit our Rail Magazine promotion trading partners:      (Click here to add your print rail magazine.)


Custom Search
TrainWeb Reports & Web Sites: Featured Today! Previously Featured Slideshows Highlighted Past The Big Stories Directory
HOME APRHF TRAINWEB.COM .NET .ORG .US FORUM FACEBOOK NEWS LINKS TRAVEL RAILFAN MODEL JOBS PARTY
Newsletter | About Us | Contact Us | Advertise With Us | Silver Rails Country for Train Enthusiasts
View Stats  | Page updated:02/08/2016  | Version 2016b08c  | Links  | ©2015-2017 NordiLusta, LLC