Hello!
A little trivia for some of you on a new project!
It’s an EMD SD40-2 Frame and Cab with HTC-R trucks, the 16-710G3A, and it’s got SD70MAC Flared Radiators and the body reaches the ends of the frame
What am I (make an assumption!)
Its not complete though!
It’s whatever YOU say it is. It’s all make-believe.
It’s a defective attempt to build a SD70MACH using an unsuitable frame and throwing out most of the 70-series electronics. I don’t think you can cavalierly sling HTCR trucks under a SD40 the way you could by switching toy sideframes.
No, but he could try an HT B-B…
Better yet, he could try two of them as intended. But as you note he’d be better with an SDP45 frame than an SD40…
Maybe he could dig up an old IC SD40A? I wonder if any of those odd beasts are still around? I remember catching one in Springfield, IL back in the early 90’s. Looked ginormous.
Ask the Interwebs a question and it usually has an answer - IC 6014 is still around.
A mix of spare parts to satisfy a railroad’s cheapskatery? That’s my guess. Designation wise, I gots a nothing! 
That gets him the SD45 frame… but not as impressive as the SD70 he says he got the 710G3 engine and the long hood from.
And the SD45, too, has different truck mounting from HTCRs…
Just do mods for the SD70MACH and put heritage schemes on it. Of course I’d rather see the treatment done to an SD70ACU…
That much is clear!
It’s obviously a steam locomotive! (joke)
Well I DID forget to mention its just a test bed and I’m still deciding on whether to use the 20-645 or put it on the SDP45 frame as a few of you guys mentioned, but I’m for sure designating it SDL70MAC since its a supposed to be shorter SD70MAC Series locomotive 
It’s coming out great!
It might actually fit 
And I forgot to mention in the beginning that the frame will be heavily modified to accommodate all the modifications, and the frame is also reinforced to fit the weight of the 16-710G3A
The “L” stands for “Light” in EMD terms. That’s why the SDL39 has the lighter export trucks and a 12 cylinder engine instead of the 16 in the 38/40.
Since it’s just an elevation drawing on a computer, what difference what’s in the hood make?
I don’t quite see the point of a shorter SD70 if you’re going to use a SDP45 frame. Just section the SD70 frame that your parts came on. It’s a weldment already, so no fabrication surprises.
I’d use the Mercedes-Benz letter ‘K’ (for ‘kurz’ which means ‘short’) because ‘light’ is NOT something that characterizes that locomotive design.
Seems reasonable to use K instead of L
Almost there!
Just need to get the cab reworked (maybe the NS Admiral Cab ) then get the front steps completed and do the HTC-R truck work
Looks interesting, to say the least. One question though - How can it be an EMD MAC model with a spartan type cab? M means safety cab equipped. Also, for the SD50S, EMD used the letter S to denote locos built on short frames. I believe the SD50S’ were SD50 testbeds built on SD40-2 frames.
