GM&O SD40X

Great work.

Awesome job Malcolm!

That's cool Malcolm.

I respect your work.  I still have a body for you.  No charge.

Very nice job on the 950, Malcolm. It may be a one-of-a-kind model. I admire your restraint on the weathering, too.

Excited to get it in the mail. I did the fan work on the rear of the engine, but struggled at the paint job. Thanks to Malcolm, my dream of having this engine got realized. I also supplied him with a Des Plaines Hobbies properly built RS5T horn

Yes, Adam did the body work and I did the painting and weathering. Sorry Adam, I was not trying to take credit for your work. The last picture I saw of this loco before it received ICG paint was pitiful. You could barely identify it as a GM&O loco.

Malcolm

An SD40X was the first SD40 built by EMD on a SD35 platform. You just have to make some changes where the radiator area abuts the dynamic break hatch. You have to lengthen the grills on the side of the radiator area as well as adding three equal radiator fans. I think they are 48in ones

Adam

For starters, the cooling section of the long hood wood have had three cooling fans, all of which would be 48" diameter, instead of the two 48" fans on either side of a 36" diameter fan, as was on the GP/SD35 series.

Not knowing what an SD40X is, can you say what you modified on the SD35 to get it to this form?

The Sd40X was the "EMd test beds for the sd40 loco. built on sd35 frames, the big diffeence is the 3 tall "48" cooling fans on the rear of the loco long hood.

Yes, the "X" denotes an "Experimental" unit, prior to EMD releasing the model in the "standard catalog line". The SD40X model was the "test bed" for the soon to be announced "40 Series Line" of 3000HP units in both GP and SD versions. The SD35 model was 2500HP, with a 16-567D3A turbocharged prime mover, DC model D32 main generator, and D67 traction motors. The SD40X had the newest 16-645E3 turbocharged prime mover, an AC alternator (AR10) main generator, and D77 traction motors. When the actual production SD40 model came out, the under frame was longer than the SD35 series. 

When the actual production SD40 model came out, the under frame was longer than the SD35 series. 

IS it safe to say hot water whaen the sd40 came out the frame was "standardized"with the same length of the sd45 frame... or did that come in later production with the sd40-2 series? Inquiring minds would like to know.

Here some under construction photos.

Adam

Frame length "standardization" within the SD line came with the "Dash 2 Series".

By the way, Mr. "curve", prudent use of CAPS is requested with EMD model designations are being discussed, plus no "-" between the "SD" and the "40", i.e. NOT "sd-40", but "SD40".

Thanks.