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I see a Question about Power, and how Trains are powered. I'll look at this from the passenger Train perspective. Our Fleet- 1x (10-20) EMD 59PHI- those locomotives are huge, with built in generators, but often, they are in for minor repairs, etc.. So we have a replacemnt fleet. An F7 series locomotive, A GP9r So when a GP9r is hocked up to 6 passenger cars- it tends to fail a lot. Why? simple- too much demand from such a small engine. The locomotive can't power The Air conditioning all the bells, the doors, the lights all at the same time Hence "B" units, (Aka Cp's 600 series) Look like Regular freight cars, except it is one massive generator. Beofre the F59, we had Strictly F7s Manyu of them required a B unit- however some didn't. This, too, is simple. It really depends on the cars. 6 car Trains, all Newer amtrak cars, requirew like posted above, heat, A/C bells, lights. a 6 car train with the 1947 cars requires one thing, Lights, heat and A Pa system, hence there is no need for a B unit. Want A/C in those cars? put down the window. It depends on the Length, and what type of cars they are to determine weather or not a B unit is needed. 5 old cars- No generator . 5 new amtrak cars, big time Generator.
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