The NTRAK Standard
Click here for a
two-page PDF file that includes a sketch of the basic, standard 2'x4'
straight N-Trak module, including position of required tracks, wiring,
legs, etc. plus several detail sketches and accompanying notes.
Modules are joined in a layout by clamping with two "C"
clamps and inserting 5" sections of Atlas "Snap Track".
(Actual length, 4.910")
Remove the tie from one end so that the rail joiners (Atlas preferred)
will slide fully on. Place joiners on other end, put in place, and then
(with tweezers or similar implement) slide joiners into position.
For clamp clearance, top of rail to opening for "C" clamp is
4.5".
Here are some of the most important measurements for the NTRAK standards
in both millimeters and inches. If there is something more you want to
know, feel free to ask.
|
| Track |
Measure |
From rear |
Height |
Min radius |
Max grade |
Cable color |
Notes |
|
|
|
|
|
|
|
|
| Main Line 1 |
mm
in. |
508
20 |
0
0 |
610
24 |
0%
0% |
Red |
R |
|
|
|
|
|
|
|
|
| Main Line 2 |
mm
in. |
470
18.5 |
0
0 |
610
24 |
0%
0% |
Yellow |
R |
|
|
|
|
|
|
|
|
| Branch Line 1 |
mm
in. |
432
17 |
0
0 |
457
18 |
1.5%
1.5% |
Blue |
B |
|
|
|
|
|
|
|
|
| Branch Line 2 |
mm
in. |
254
10 |
0
0 |
457
18 |
1.5%
1.5% |
Blue/Yellow |
B |
|
|
|
|
|
|
|
|
Mountain
Line |
mm
in. |
100
4 |
+80
+3.125 |
305
12 |
3%
3% |
Green |
O |
|
|
|
|
|
|
|
|
Set Up
Track |
mm
in. |
-32
-1.25 |
0
0 |
?
? |
?
? |
Green/Yellow |
O |
|
|
|
|
|
|
|
|
Passing
Track |
mm
in. |
546
21.5 |
0
0 |
?
? |
?
? |
Orange |
O |
|
|
|
|
|
|
|
|
| Nn3 Front |
mm
in. |
559
22 |
-50
-2 |
?
? |
?
? |
Red/Green |
N |
|
|
|
|
|
|
|
|
| Nn3 Middle |
mm
in. |
394
15.5 |
0
0 |
?
? |
?
? |
Yellow/Green |
N |
|
|
|
|
|
|
|
|
| Nn3 Rear |
mm
in. |
162
6 |
+64
+2.5 |
?
? |
?
? |
Blue/Green |
N |
|
|
|
|
|
|
|
|
| NCat Front |
mm
in. |
381
15 |
0
0 |
254
10 |
?
? |
Special |
C |
|
|
|
|
|
|
|
|
| NCat Rear |
mm
in. |
50
2 |
0
0 |
250
10 |
?
? |
Special |
C |
|
|
|
|
|
|
|
|
| 12V |
- |
- |
- |
- |
- |
White |
|
|
|
|
|
|
|
|
|
| Floor |
mm
in. |
- |
-1015
-40 |
- |
- |
- |
A |
|
|
|
|
|
| Module Sizes |
mm |
Length 1220, 1830, or 2440 |
Depth 610 |
|
|
in. |
Length 4', 6', or 8' |
Depth 2' |
|
|
|
|
|
|
| Extensions |
mm
in. |
152 to front and/or rear
6 to front and/or rear |
|
|
|
|
|
|
|
| Notes: |
R |
Required |
|
|
|
B |
Required - either BL1, BL2,
BL1/BL2 transition or BL2/BL1 transition. |
|
O |
Optional |
|
N |
Required for Nn3 standard |
|
C |
Required for NCat
standard |
|
A |
Must be adjustable + / -
25mm or 1" |
Possible extension
Up to to 6" may be added to both the front and rear of modules to
make room for scenery or track plans. If extra is added at the rear, the
skyboard should still come forward in some manner to match the standard
position.
[The NTRAK "How-To" Book, p. 11]
You can order a basic 20-page NTRAK Module Manual containing
the NTRAK standards.
You can also order the NTRAK Module 'How-to'
Book, a large-format,
spiral-bound book with over 100 pages including all of the material in the
16-page manual plus 50 module photos and track plans, chapters on
carpentry, wiring and design of modules, for $12.00.
The Wiring and Connector standards are documented in
2011 Standards for
Wiring and Connectors.You can download several PDF files discussing
and detailing Powerpole Connectors in the document
Wiring and Connectors Recommended Practice page.
Requirements for Use of
Power Strips and Extension Cords with NTRAK Modules Ncat
Live overhead wire standards and information:
http://www.teamsavage.com/ncat/ncat.html
|
NTRAK Modular Railroading Society, Inc
