list of 6 Axle diesel on 18" radius

AndyWS

New Member
Geeps are by far the most prevalent locomotive on my roster as well. The six-axle locos don't get much use because as stated earlier the F-M Trainmaster is the only one that seems to handle the 18" curves okay.
 

green_elite_cab

Keep It Moving!
My general rule of thumb for EMD diesels is SD45 and below works on 18 inches. any bigger and you push it. for GEs, i've found the exceptable length to be the U36C. note that i said length. not to familiar with alcos, but you get the general idea.

wheel base isn't really the problem. its coupler overhang that kills you.
 

Russ Bellinis

Active Member
One other thing that will enter into the equation besides the length of the locomotive is the wheel base. An Alco PA is not very long compared to some of the more modern freight power, but it won't handle 18 inch radius very well because the wheel base from the lead axle to the trail axle in each truck is longer than most other engines.
 
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