KEY

TG
(Track Gauge)

T
(Tire Width)

W
(Flange Width)

F
(Flange Depth)

R
(Fillet Radius)

B
(Back to Back)

G
(Wheel Gauge)

WC
(Wheel Check)

H*
(Coupler Height)

PROTOTYPE

56.500

5.500

1.156

1.125

0.688

53.380

N/A

54.530

1:12 Scaled Prototype

4.708

0.458

0.096

0.094

0.057

4.448

4.544

1 Inch Scale Standard

4.750
MIN.

0.505
MIN.

0.125
MAX.

0.140
MAX.

0.062
+/-.010

4.437
+.020/-0

4.690
+0/-.020

4.562
REF.

2.875

1:8 Scaled Prototype

7.062

0.688

0.144

0.141

0.086

6.672

6.816

1-1/2 Inch Scale Standard for
7-1/2" Ga. 

7.500
MIN.

0.750
MIN.

0.156
MAX.

0.187
MAX.

0.094
+/-.015

7.120
+.020/-0

7.440
+0/-.020

7.281
REF.

4.4375