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"E and F units"

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ebmonon36 (4 posts)
Sep-05-01, 11:01 PM (EST) "E and F units" What's are the differances between E units and F units?
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Subject Author Message Date ID RE: E and F units tryagin Sep-06-01 1 RE: E and F units Rail_Driver Sep-06-01 2 RE: E and F units tryagin Sep-06-01 3 RE: E and F units Nels_Anderson Sep-06-01 4 RE: E and F units Walt Sep-06-01 5 RE: E and F units lightbg Sep-06-01 6

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tryagin (163 posts)
Sep-06-01, 00:01 AM (EST) 1. "RE: E and F units" LAST EDITED ON Sep-06-01 AT 00:03 AM (EST)E unit, named for the first General Motors "streamliner" cab-units with Eighteen hundred horsepower(hence the "E" for 1800). They had two 900 HP switcher diesel Prime-movers powering four traction motors on two six wheel trucks: F units, named for 5400 hp FT- first freight cab-unit(1939-45)usually in A-B configuration. From GM, One prime-mover, four traction motors, four axels.Developed through 1955 to the F-9:

This is an F-3, built 10/48

Photo-EMD-StuffThis is just a quick answer,
check: http://www.ribbonrail.com/nmra/nmralink.html
hope this clears up some of the fog,Tim
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Rail_Driver (55 posts)
Sep-06-01, 01:00 AM (EST) 2. "RE: E and F units" Actually the horsepower should read:E6 - 2000 HP
E7(A or B) - 2000 HP
E8(A or B) - 2250 HP
E9(A or B) - 2400 HPF3(A or B) - 1500 HP
F7(A or B) - 1500 HP
F9(A or B) - 1750 HPThe FT prototype was permanently coupled as a ABBA set with a total of 5400 HP.
Rail Driver
www.3dtrainstuff.com Remove | Alert Edit | Reply | Reply With Quote | Top
tryagin (163 posts)
Sep-06-01, 10:51 AM (EST) 3. "RE: E and F units" Actually the FIRST E Unit was the EA - produced in 1937-38 for the Baltimore and Ohio RR -HorsePower- 1800 That's where the "E" nomenclature stuck, even though the rest of E production, from E3A&B to E-7A&B were 2000HP-and E-8&9's were 2250 and 2400 HP respectfully.
The original FT was as Raildriver says, in A-B-B-A configuration.Tim Remove | Alert Edit | Reply | Reply With Quote | Top
Nels_Anderson (487 posts)
Sep-06-01, 05:33 PM (EST) 4. "RE: E and F units" You guys sure know your locomotives I think there's also a simpler answer that's more useful in recognizing locomotives though. E units have 6 wheel trucks while F units have 4 wheel trucks. It's similar to the more modern SD series (6 wheel trucks) versus the GP series (4 wheel trucks). Of course, there are exceptions like the FL9 with a B-A1A wheel arrangement, just to keep things interesting.
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Walt (121 posts)
Sep-06-01, 08:38 PM (EST) 5. "RE: E and F units" The original EA is preserved at the B&O museum in Baltimore, but without it's B unit. The original Baltimore & Ohio set (A-B) was used on the Capitol Limited between Chicago and Washington. I have an HO model of the set. Remove | Alert Edit | Reply | Reply With Quote | Top
lightbg (106 posts)
Sep-06-01, 10:09 PM (EST) 6. "RE: E and F units" Just an addition to Nels' information: the E units were 6 wheel trucks, but only the outer axles were powered, effectively making them A-1-A's at both ends, and the truck wheelbase was 14' 1". Jake. Remove | Alert Edit | Reply | Reply With Quote | Top

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