Recommended Model Railway Wheel and Gauge Standards.
Track Standards
Gauge
Scale to 1 Foot
Buffer height from rail
Weight of an average express loco.
Average train weight
Average speed
Loading gauge
Minimumradius of curves
Recommendedradius for curves
1-1/4"
7mm
24.2mm
7 lbs
30 lbs
2 m.p.h.
63 x 94.5mm
4 ft
6 ft
1-3/4"
10mm
34.6mm
20 lbs
80 lbs
3-1/2 m.p.h.
90 x 135mm
5 ft
10 ft
2-1/2"
17/32"
1-27/32"
50 lbs
2 cwt
5 m.p.h.
4-3/4" x7-1/8"
8 ft
16 ft
3-1/2"
3/4"
2-19/32"
100 lbs
9 cwt
7 m.p.h.
6-3/4" x10-1/8"
14 ft
30 ft
5"
1-1/16"
3-21/32"
2-1/2 cwt
18 cwt
10 m.p.h.
9-9/16" x14-3/8"
18 ft
40 ft
7-1/4"
1-1/2"
5-3/16"
6 cwt
2-1/2 tons
12 m.p.h.
13-1/2" x20-1/4"
60 ft
9-1/2"
2"
6-7/8"
10 cwt
4 tons
15 m.p.h.
18" x 27"
100 ft
10-1/4"
2-1/4"
7-3/4"
17 cwt
5 tons
17 m.p.h.
20-1/4" x30-1/4"
50 ft
150 ft
Wheel Standards
Wheel Standard Data
Back toBack
Tyre Width
FlangeDepth
RootRadius
Flange Radius
Chamfer
Tread DiameterPoint
M/CgDimension
M/C°Dimension
Flange Way
G
B
W
D
RR
FR
X
P
Y
Z
F
2.281
0.268
0.085
0.035
0.020
0.015
0.090
0.055
0.034
0.093
63.5mm
58
6.8
2.2
0.90
0.50
0.40
2.3
1.4
3.281
0.375
0.110
0.050
0.030
0.126
0.076
0.051
0.130
89mm
83
9.5
2.8
1.3
0.75
3.2
1.9
3.3
4.687
0.535
0.140
0.070
0.045
0.176
0.106
0.077
0.190
127mm
119
13.6
3.6
1.8
1.2
0.80
4.5
2.7
1.95
4.8
6.800
0.776
0.203
0.100
0.065
0.040
0.254
0.154
0.270
184mm
172
19.7
5.2
2.5
1.7
1.00
6.4
3.9
6.9
8.900
1.017
0.266
0.133
0.086
0.336
0.146
0.350
241mm
225
25.8
3.4
8.5
5.15
3.7
8.9
9.600
1.097
0.287
0.144
0.060
0.363
0.219
0.158
0.380
260mm
244
27.8
8.0
2.4
1.5
9.2
5.55
4.0
9.7
