Have any EMD questions? Ask right here!

[Anonymous]

Just as railpac started his Alco question thread, I thought I would start an EMD question and answer topic. If you have any questions about EMD products, ask them here!

[dthede]

QUOTE: Originally posted by M636C

Larry,

As you probably know, the standard locomotive wheel is 40" diameter. The notice draws attention that the SD70M in question was built with 43" wheels (which would very slightly reduce the tractive effort). The "witness groove" is a mark turned in the face of the wheel at 38" diameter (in this case). It is there to indicate wear, and as a mark to indicate the limit that the wheel can be turned down to in a wheel lathe when machining to correct the profile of the wheel for wear.

Peter

UP #4163 is an SD70M with 42" wheels and 38" witness groove, so there is apparently a series with 42" wheels.
Didrik

[Anonymous]

I am still looking for a good reference (web or dead tree) which gives information on the various locomotive trucks - Blomberg, HTSC bolsterless, AAR, etc. Know any right off hand?

[CSSHEGEWISCH]

QUOTE: Originally posted by rgroeling

Its Chris again. Have any idea as to the practical purpose of a fully coweled locomotive, such as an F45??

Thanks!

One theory has been to provide an enclosed area for enroute troubleshooting. This would especially make sense on BN and the Canadian carriers.

[CSSHEGEWISCH]

Licensing agreements are a common procedure in a variety of businesses. In this instance, the overseas manufacturer agrees to pay a royalty to build locomotives using EMD's designs. The builder needs to meet certain standards and other requirements.
MACOSA in Spain holds licenses from EMD and Alstom and DLW in India holds licenses from Alco and EMD.

[Anonymous]

How did Clyde and other companies get licences to make diesels under the GM EMD name?

[Anonymous]

Its Chris again. Have any idea as to the practical purpose of a fully coweled locomotive, such as an F45??

Thanks!

[Anonymous]

Thanks for the reply, that is very hlpful.

Chris

[CSSHEGEWISCH]

UP 8500-8561 were actually built with 265H engines rated at 6000 HP, I don't think that any of the others were actually converted.

[Anonymous]

Did any U.P. SD90s get outfitted with 6000 hp motors?
I kno they had plans to do so, but where the plans ever carried out??

[Anonymous]

Gday from Australia , can you tell me the difference in 16 645 E3B and E3C prime movers . Also what physical differences are there between Roots blown and Turbocharged 16 645's internally ie rods / pistons / liners etc .
We still run GM's with the 645E3C's , AR16 alternators / D77B Traction Motors and Super Series . I imagine these are a SD40X / 50 hybrid . They are old and hungry but still very capable . Our staple diet is a GE known as CV40-9i which is basically an Australianised C40-9 built by A.E Goninan . They use smaller hybrid traction motors and gross 132 metric tonnes . As a go anywhere do anything loco they blitz everything else .
Cheers DPO3 .

[Anonymous]

6330 was an experiment to save fuel. Retired SD45 6440 was the donor for the long hood, including the radiators. 6330 also had snow shields over the inertial air intake screens. 6330 made it to the BNSF roster and was renumbered 7600. Sadly, I believe this unit has been retired.

Here is a photo of 6330:
http://www.trainpix.com/BN/EMDRBLD/SD40C/6330.HTM

[Anonymous]

I own the 1997 BNSF motive power review, which is the only year I have. Great book, taught a lot about the new locomotives I didn't know about. One locomotive I really liked was the BN SD40C 6330, which had been repowered with a CAT 12 making 4200hp. The book described it as the SOLE former BN cat powered unit in the BNSF fleet. I take it there were more at one time that have been gotten rid of. Correct?
Why? What is the downside of these units? Did they have some problems? You would think it would be great to take an old SD40-2 making 3000 hp and swap its motor with something making 1200 more. That almost makes it equal with the newest units out there. So what went wrong? Also, I'm not up to date on BNSF. Do they still have 6330 in operation? Thanks.

[Anonymous]

QUOTE: Originally posted by paulbach

What, if any, are the differences between the SW1500 and the MP15.

Internally, they are pretty much the same. The MP15 (I assume you mean MP15, not MP15AC or MP15T) uses road trucks, like the ones found on a GP40-2, while the SW1500 has flexicoil trucks. Also the MP15 is 48' 8" long while the SW1500 comes in at 44' 8". A whole 4 feet shorter.

[paulbach]

What, if any, are the differences between the SW1500 and the MP15.