Side Rods

Posted by Keith Hayes on Jun 22, 2018; 3:12am
URL: http://c-sng-discussion-forum.254.s1.nabble.com/Side-Rods-tp11906.html

I have a nice photo of Espee 4449 as my screen saver. I noticed the other day that the main rod is attached to the second driver, and this got me to wondering why? Why not #3?

A quick study of NG lokies indicates that six couples engines (2-6-0s and 4-6-0s) always have the rod connected to the middle wheelset.

Engines with 4 axles vary between the second and third wheel. C-16s and the earlier B-4s have rods connected to the second axle. But 71-73 and the Brooks engines connect to the 3rd axle. Same is true for C-17s and 18s, but not the 19s. C-21s, 25s and the Ks all have the rod on the third wheel.

Yet the big 4-8-4s go back to the second wheel.

Why?

Did any classes have a mix?