2017 NMRA RP-11 and TN-11 - with TT specs

2017 NMRA RP-11 and TN-11 - with TT specs

Postby Richard-B » Tue Sep 05, 2017 3:10 pm

All
The NMRA has released updated versions of RP-11 - Recommended Practices, Curvature and Rolling Stock,
along with TN-11, a Technical Note explaining the rational used.

As an example: 310 mm radius track (12.2 in) is Classification 'F"...
while 353 mm radius (13.9 in) is between Classifications "G" and "H".

The 'Classification of Equipment' analysis tends to explain why big engines and long cars run poorly and look strange on many layouts!
rp-11_2017.04.08.pdf
NMRA RP-11
(157.83 KiB) Downloaded 94 times
tn-11_2017.04.09.pdf
NMRA TN-11
(147.12 KiB) Downloaded 77 times
Richard Brennan - http://www.tt-west.com
Somewhere between Shenzhen and Budapest...
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