"Minimum radius" of an M class

NW Mailing List nw-mailing-list at nwhs.org
Mon Jul 27 16:05:44 EDT 2009

Data No.I booklet dated 8-21-51 states "maximum curvature for operating at
low speed in road service" is17 degrees for the K1, K2, K2a and J classes;
20 degrees for all other classes.

Do not have information for what they were designed for.

Bud Jeffries

----- Original Message -----
From: "NW Mailing List" <nw-mailing-list at nwhs.org>
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Sent: Monday, July 27, 2009 12:06 PM
Subject: "Minimum radius" of an M class

> Does anyone know offhand the minimum degree of curvature a 4-8-0 was

> designed to negotiate?

> Thanks

> Joe Giannovario

> O Scale Trains Magazine

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