If it has the vent on top near the back it has a steam generator, both F and FP could have this. http://picasaweb.google.com/ErieChris333/LTEXMcDonaldOH/photo#5080305990529362674 But FP's had a large tank. <cross fingers> hope I'm right Edit: http://en.wikipedia.org/wiki/EMD_FP7 "The extra 4 ft of length was added behind the first body-side porthole, and can be recognised by the greater distance between that porthole and the first small carbody filter grille. The corresponding space beneath the body, behind the front truck, was also opened up; this either remained an empty space or was filled with a distinctive water tank shaped like a barrel mounted transversely."
Hey Jerry, None of the SP F7's had boilers(just the FP7's). However a group of them had boiler controls and the B units actually had the boilers. I am not at home so I can't look up the class and road numbers. I can fill you in after I get home. Have a good one, Wolf
Good question. I'm looking at Joe Strapac's SP Historic Diesels, page 25. It appears that 54 F7As with steam controls and 54 F7Bs with the steam generators were purchased so they could be used for passenger service. They were class "DF-4." It states that these DF-4s were freight F unit engines that happened to carry steam generators. The B units weighed 1400 pounds more than the A units because they carried the steam generators. They were all purchased with the 1200 gallon tank. [edit]OK. So what Wolf posted seems correct to me. [edit #2] More info: F7A #6186-6239 F7B #8086-8139 All originally purchased in Black Widow.
OK, that makes sense. Some of the pictures I looked at had F7A numbered units on passenger trains and had the icecycle breakers on top too, like the FP7's. Numbers would be great Wolf!
Hey Guys, O.K.All the DF4's came equiped with 65:12 gearing(for passenger service) until 1955. F7A #'s--6186 to 6239 (54 units) F7B #'s--8086 to 8139 (54 units) Ice breakers would have been installed after about 1954 when the domes came. Again the A's just had boiler controls. Of course this is a breaf over view. Hope this info helps, Wolf
Cool....Thanks Wolf! I would like to do an AB set, that can be used in freight and passenger service. I like the look of the icecycle breakers on top of a cab unit.
Ever since I had Mikes, (Secretweapon), Cab Units over here, I have been wanted to do some of my own.
Gosh, I do like those Erie Lackawanna's. Since the original posting here I went about doing some research. Yes the FP7's as purchased and delivered to SP did have the steam generator. Most of the time they were coupled to a F7B unit with a steam generator and tied into a third unit, minus the steam works. Jerry, I will be looking forward to seeing your detail work. Take care!
IIRC, the unit with the steam generator has to be next to the passenger cars unless the trailing power behind the steam generator unit has steam lines. Of course, it wouldn't matter for freight.
Some railroads ordered units with steam lines but no steam generators, but the only ones I can remember are CN RS-18s (or was it RS-10s?) and Santa Fe F45s. (I think Amtrak GP40s were retrofitted with HEP lines but no generators.)
