Page 133 - SF RAIL CAT_V2.0_WEB_F2-UPDATE-02-11-18

INDEX TEST PAGE 1
DERAILERS

DERAILERS (MADE IN USA)

Derails Control Movement - Protect your spur track from unauthorised locomotive entry

SaberTooth™
Retractable
Hinged Derails Hinged Derails Portable Derails
spiked to two sleepers. Derails can
be flipped on or off rail by hand or by Derails slide on and off rail with 13kg Tool-free installation.
using lifting lever handle pull Timber sleeper-biting anchor hook
SUITS RAIL SUITS RAIL SUITS RAIL
36-64kg 40-64kg 1-way: 40-64kg 2-way: 45-61kg LOCOMOTIVES & RAIL CAR STOPPING DEVICES

IMPORTANT INFORMATION ON DERAILS

Type of Rail? Derail Throw Direction?

All three types of derails are designed
to be used on exposed rail (open to the
sleepers).

DO NOT UsE DERAILs ON FLUsH RAIL
(rail that is encased in pavement) 1-way left 1-way right 2-way
DO NOT INsTALL DERAIL ON CONCRETE Note that direction of throw is from the viewpoint
OR REsIN sLEEPERs of the oncoming locomotive or rail car

Type of Sleepers - Wood or Steel? Hinged derails can be installed directly on wooden sleepers. steel sleepers
require adapter plate (see page 125). Retractable and portable derails must be installed on wooden sleepers only.

1-way or 2-way Derail? Consider the type of rail movement you have on your spur tracks. The primary
purpose of the derail is to prevent unauthorised locomotive entry into your siding. A secondary purpose is to
prevent a freight car on your siding from rolling out onto the main line.
One-way Derails can be used with 4-axle locomotives, 6-axle locomotives and all freight cars.

Two-way Freight Car Derails can be used with Trackmobiles, 4-axle locomotives and all freight cars. Do not
use if 6-axle locomotives operate on your siding. The deflection angle is too sharp to handle the longer wheel
base. Note that railroads are replacing older 4-axle locomotives with bigger 6-axle units for switching industrial
spur tracks. Check with your local railroad to determine what size of locomotive is likely to be switching cars on
your tracks. Two-way Locomotive Derails can be used with 4-axle or 6-axle locomotives, as well as all freight
cars: ALDON have successfully tested their hinged and portable derails at 9.6km/hr. Higher speeds
may cause a failure to derail.
www.specialisedforce.com.au

CORRECT AVOID IF POSSIBLE
Curved Track In curved track, for more assured derailing, always install the derail on the outer curved rail.
Wheels naturally hug the outer rail as they round into the curve, and thus are more likely to climb over the rail
and into the ballast. Conversely, wheels tend to draw away from the inner curved rail on entering the curve,
thus reducing the likelihood that a derail installed on the inner rail will carry the wheel over the rail. In certain
situations, due to lack of open ground off-track, it may be necessary to install the derail on the inner curved rail.
If so, a side kick Derail Booster (see page 125) should be installed on the opposite rail.
Rail Size Portable derails fit rail sizes, 44.6-69.9kg. Hinged and retractable derails are made in four standard
sizes, each of which fits a specific range of rail sizes. Request our derail sizing form to determine which size derail
you need. You will need to measure the height of the rail. see page 127 for guidance.

SYDNEY Head Office (02) 9547 1844 Adelaide (08) 8352 8866 Brisbane (07) 3256 6011 Townsville (07) 4728 8756 123
Darwin (08) 8984 4453 Melbourne (03) 9761 4199 Perth (08) 9354 8544 Port Hedland (08) 9172 1113 Tasmania 0427 423 217