User Manual

The Athearn N-Scale 4-6-6-4 Challenger is the culmi-
nation of the art of design and tooling integrating the
latest innovations in electronic technology. The Chal-
lenger model has been developed from its inception as
the finest three dimensional operating miniature repre-
sentation of the prototype available.
Enclosed in the premium quality box are the following
items:
1. History and Instruction Book that includes a warranty
and instruction card
2. N scale 4-6-6-4 Challenger Locomotive
3. N scale tender with full electronics package installed
4. Hand Held Wireless DC Controller
Upon inspecting the locomotive and tender note the
many details that have been incorporated in its con-
struction.
Locomotive and tender features
• Boiler backhead with full details
• Individually applied detail parts such as piping,
valves, generators, etc.
• Blackened metal wheels.
• Eccentric cranks operating on both sides in correct
direction.
• Minimal compromise on wheel diameter (about 1”
only).
• Front and rear engines (cylinders and coupled drive
wheel sets) both pivot in order to manage 11” radius
curves. Although the locomotive runs on 11" (279.4
mm) radius curves, we strongly recommend to oper-
ate your Challenger on at least 15" (381 mm) radius
track.
• Pilot has open/closed positions. Coupler pocket can be
inserted to mount coupler.
• Headlights and tender lights have directional light
change.
• Five-pole, skewed armature motor with two fly-
wheels with very smooth-running features.
• Each undecorated version includes all parts for that
specific version.
• 5-pin connector plug between loco and tender.
• Current pick-up on all 12 driver wheels and 8 tender
wheels.
• Drawings for spare part replacement are shown on
pages, 12, 13 and 15. Disassembly of this locomotive
is not very easy and great care should be taken if you
attempt this.
• Detailed instruction sheets with exploded view draw-
ings and history booklet.
Prototype Specific Features
• Single or twin smoke stacks.
• Coal load or oil bunkers.
• Wood tender deck.
• Smoke deflectors.
• Closed or open cab.
M o d e l F e a t u r e s
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