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This website has been archived from TrainWeb.org/proto64 to TrainWeb.US/proto64.

 

Proto 64
Standards in progress

 

This page updated April 12, 2002


 
 
 
Standard, Recommended Practice, or Practical Application 
Track 
Gauge (G) 
Check 
Gauge (C) 
Flangeway Width (F)
Point to Rail (P) 
Back to 
Back (B) 
Tire 
Width (N) 
Flange 
Width (W) 
Flange 
Depth (D) 
Min 
Max 
Min 
Max 
Min 
Max 
Min 
Min 
Max 
Min 
Max 
Min 
Max 
Min 
Max 
1/64th Prototype (inches) 
.883
.889 
.855 
.855 
.029 
.030 
.083
.832 
.832 
.086 
.086 
.018 
.022 
.022 
.022 
Proposed NMRA/NASG P:64 Standard (inches)
.883 
.90* 
.853 
 
.030 
.040* 
.083 
.827 
.833 
.086 
.088 
.018 
.020 
.018 
.020 
NMRA/NASG S scale Standard (inches) 
.875 
.898 
.823 
 
 
.057 
.064
.777 
 
.124 
 
 
.025 
.031 
.031 
                               
.110 
.110 
.030 
.030 
.025 
.025 
.088 
.088 
.025 
.025 
.023 
.023 
.088 .088 .025 .025 .023
.023
.086 .088 .018 .020 .018
.021

*use this wider dimension only on curves

Blue text indicates the most recent change.

If you have questions or comments about this site,
  write the Proto:64 Webmaster at
  mhrreast AT yahoo DOT com



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