Reply to "Tight turns"

Jim ScorseOGR Forum Member

For those of us into full prototype radius in minimum space:

Alco (300 & 600HP) boxcabs, EMD NW1/2, SW1s and SD7/9 (SD7/9 not coupled to anything, turning radius only) could go around 59 degree curves (100 foot radius - about 24" in O scale)

Older SW 7/9/600/1200 series switchers were rated at 39 degrees (150 foot radius) - GP7/9. More modern SW1500 and up are limited to 200 foot radius.

GE 44 Ton, Alco FA1/2 - RS1/2/3 and EMD F3/4/5/7/9 - GP9 - E7/8/9 were limited to 275 feet.

In contrast some SD40-2s could handle 200 foot depending upon the trucks, 2 coupled units were limited to 250 feet and coupled to 50 foot car the minimum radius is 338 feet..

SD70M-2s are listed at 200 feet - not coupled to cars.

ES44 - 275 feet

9/26/173:36 PM

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