k_malkowski The locomotive will fit the PRR K4 Mechanism by Bachmann. See attached photos.
k_malkowski you are correct. sorry got it mixed up with the other model. It is not designed for a particular chassis in N scale. I made it in S scale originally and was asked to also make it available in N scale. Someone tried to use it with a PRR K4 chassis from bachmann but i don't know how it ended up.
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