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"E" and "F" meaning

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Posted by M636C on Saturday, February 17, 2018 5:07 AM

I belong to the group that believe "F" stands for "Fourteen"

Lets look at every other EMD code up to that time

S = six (hundred horsepower)

N = nine

T = twelve

E = eighteen

So the suggestion that F = fourteen (for 1350, since T was already taken) fits the series exactly....

Now it is agreed that locomotives with drawbars coupled in pairs were known as FT and those with couplers FS , so  "Fourteen hundred horsepower Twin" and "Fourteen hundred horsepower Single" fit well.

It also explains why only "F" was used for later units once drawbars were no longer used.

A number of people don't like this explanation, but I've never heard a better one.

Peter

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Posted by mudchicken on Saturday, February 17, 2018 5:26 AM

And the corn-fused Alco naming convention? (design vs. marketing versions)

Mudchicken Nothing is worth taking the risk of losing a life over. Come home tonight in the same condition that you left home this morning in. Safety begins with ME.... cinscocom-west
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Posted by tree68 on Saturday, February 17, 2018 7:12 AM

M636C
I belong to the group that believe "F" stands for "Fourteen"

I have no reason to doubt it - the logic is the same, the only question being which horsepower applies, 1,400 (1,350) or 1,500.  Since the FT was first, then it's 1,400.

As is often the case, however, one might wonder if the builders even conceived of a day when the horsepower for an individual locomotive would exceed 4,000...

 

 

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Posted by BaltACD on Saturday, February 17, 2018 7:16 AM

tree68
M636C
I belong to the group that believe "F" stands for "Fourteen" 

I have no reason to doubt it - the logic is the same, the only question being which horsepower applies, 1,400 (1,350) or 1,500.  Since the FT was first, then it's 1,400.

FT - Fourteen Thirteen

Makes as much sense as everything else.

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Posted by Overmod on Saturday, February 17, 2018 9:43 AM

tree68
As is often the case, however, one might wonder if the builders even conceived of a day when the horsepower for an individual locomotive would exceed 4,000...

You mean like the Baldwin 6000hp prototype of the late '30s? Surprise

(Granted they never put all eight genset units in at once, but you did say 'conceived', and Essl and Baldwin certainly did that and more.)

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Posted by erikem on Saturday, February 17, 2018 2:08 PM

Overmod


 

tree68
As is often the case, however, one might wonder if the builders even conceived of a day when the horsepower for an individual locomotive would exceed 4,000...

 

You mean like the Baldwin 6000hp prototype of the late '30s? Surprise

IIRC, the GG-1's from the 1930's were good for 4,300HP continuous, but that was an electric...

GE was forecasting 4,000HP diesel's when the U25B was announced.

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Posted by KBCpresident on Wednesday, February 21, 2018 2:52 AM

erikem

"E" is for Econoline.

I noticed this in an article and felt a bit silly asking this question, though I appreciate the discussion! I do thik its interesting that both firms designating a mainly freight machine with "F" and a mainly passenger machine with "E". Even if there is no connection.

The Beaverton, Fanno Creek & Bull Mountain Railroad

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Posted by erikem on Wednesday, February 21, 2018 10:14 AM

I'm pretty sure it is just a coincdence. Keep in mind that the Econolines were and I think still are available in both passenger and cargo configurations.

Our family had a '69 E-350 Clubwagon from '69 to '72. Kind of a fun vehicle to drive wth manual brakes, manual steering and manual choke... I also had an F-250D for a number of years.

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