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If the demand existed, it would have been done in plastic long ago.
I need new pants... Well, except for the disgustingly bright shade of green...I have a hard time believing that there is no demand for an N Scale K4. The PRR and its subsidiaries may have been the only railroads to use it, but somehow the market can sustain several manufacturers producing the model in HO. I think that the K4, whatever its challenges, (remember that the prototype was not the best puller in the world, and was often double or triple headed) would sell more than enough to richly reward whoever wants to tackle the project.
But the K4 was no slouch in the tractive effort department. It had a higher tractive effort than the USRA design Pacifics both heavy as well as light. The reason it was double and triple headed was the PRR's plans to electrify the mainline to Pittsburgh were dropped due to the economic depression. The replacement for the K4 was to be an electric mlocomotive. Meanwhile, train weights exceeded the K4's ability and with no replacement that necessitated double and triple heading them.
Quote from: inkaneer on January 30, 2010, 02:45:48 PMBut the K4 was no slouch in the tractive effort department. It had a higher tractive effort than the USRA design Pacifics both heavy as well as light. The reason it was double and triple headed was the PRR's plans to electrify the mainline to Pittsburgh were dropped due to the economic depression. The replacement for the K4 was to be an electric mlocomotive. Meanwhile, train weights exceeded the K4's ability and with no replacement that necessitated double and triple heading them.The K4 had a starting tractive effort of around 44,460 pounds TE. I did not mean to say that the design was a slacker compared to other pacifics out there. I meant more that by the transition era, there were far more powerful designs in use by most other railroads on premium trains. (Compare, for instance, the SP's GS-4 at 64,800 pounds TE.) For people modeling transition era, multiple-heading K4's would be a completely prototypically feasible option for pulling long trains like Kato's Broadway. Just a thought for manufacturers who are put off because they fear that they couldn't build a model with "enough" pulling power.