John,John Coker wrote:Alco used a trailer design that mainly supported the frame directly by means of a plate on the truck sliding on a plate on the frame. SV 2-8-2 s, K-28s and K-37s all had this crude but effective design. It accounted for a smooth ride. Slather on the gear lube, though.
Thank you for the first hand knowledge! I find it interesting that the slide plate design gave the smoother ride. All of the K classes have the trailing trucks equalized to the drivers so the difference is in the motion and loose fits of the swing links. I'm going to have to give that some thought.
Cheers,
Curtis F.
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One more bit about Delta trailing trucks: