Bob, that's a new one to me as well about WIlliams passenger cars. Usually it's the engines that the couplers come open on. However I have a set of Williams passenger cars(6 car set) that won't stay on the track even on a 5 foot length of straight track. One thing that I have noticed with Williams couplers is that the track needs to 100% level or the Williams cars will slip under at the couplers and come undone.
Well, I think I have fixed these couplers. I squeezed the sides of the coupler heads, which I think are made of bronze, in a smooth-jawed vise, bending the "thumb" (which Janney called the "guard-arm" in patent US 138,405) inward by about .01 inch.
Bob Nelson
This is a new one for me. I bought a like-new 5-car Williams set of heavyweight 14-inch PRR cars (set 2502) at a train show today. The cars will not stay coupled under load--but neither do the couplers open! The plastic knuckles just slip past each other under a modest load. I have a very similar Williams Erie-Lacawanna set that has no such problem. Has anyone else ever seen this?
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