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Recommended NMRA Car Weights

 

The Table below displays the recommended weights of model railroad cars. After doing all the math, this is how much your car should weigh (in total.)


SCALE

INITIAL WEIGHT

+
ADDITIONAL WEIGHT per actual inch of car body length (ounces
O
5 oz.
+
1 oz.
On3
1.5 oz.
+
.75 oz.
S
2 oz.
+
.5 oz.
Sn3
1 oz.
+
.5 oz.
HO
1 oz.
+
.5 oz.
HOn3
.75 oz.
+
.375 (3/8 oz.)
TT
.75 oz.
+
.375 (3/8 oz.)
N
.5 oz.
+
.15 oz.

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