Athearn SD40T-2W??

[Anonymous]

Here is a picture of my latest creation. I put a wide cab on an Athearn tunnel motor. I'm not sure if it would be called a 40T-2W or a 40T-2CW. Please look and tell me which one it would be. I'm not quite done hense the missing handrails. I hate making my own. Thanks for looking and ideas.

http://www.freepgs.com/Juby4life/IM000864.JPG

Thanks,
Jeremy

[Anonymous]

SWEET! I'd call it 40T-2W , Since SD's are all 6 wheelers, you dont need the C!

[Anonymous]

Cool, thanks. Now all I need is a SD40T-2B cabless. Hmmm that's an idea. This is why I love modeling this way. I can make anything I want to. I do have CNW, BNSF and SP locos that I made using photos but this is too much fun[:D][:D].

Thanks,
Jeremy

[memsd]

What exactly are the features of a "tunnel" loco? A question that been burning in the back of my mind...

[Anonymous]

Good information about tunnel motor features here:

http://espee.railfan.net/tunnel_motors.html

Warren

[brothaslide]

An engine I would love to see kit-bashed would be a DD90MAC-AX in SP colors. A & B units. SP used to have DD35B units.

That would be a huge 12,000 + horse power engine if a prototype version exsisted.

Sean

[BentnoseWillie]

Actually, that'd be an SD40T-2M. In GM parlance, W was reserved for the CN-design cab with the 4-pane windshield. The 3-window and 2-window versions that GM designed themselves was denoted with an M. When the WhisperCab was an widecab option, it was designated with an I. Vibration isolation is now standard quipment on GM widecabs, so they went back to the M designation. The only I's I know of are CN's SD70I's and the F59PHI.

Meanwhile, in Erire, GE designate widecabs with a W. They also used M, but for the full-width cowl carbody as used on C40-8's for CN, BCR, and QNS&L. EMD denoted the full-cowl design used on CN's SD50 and SD60 orders with an F.

Confused yet? Drives me bananas!

Oh, and that's a nice model. Keep up the good work!

[Anonymous]

Very kewl![8D]

[Anonymous]

Nice engine!

[n2mopac]

QUOTE: Originally posted by memsd

What exactly are the features of a "tunnel" loco? A question that been burning in the back of my mind...

The answer here is quite simple. A tunnel loco is designed with the idea of fixing a specific problem with EMD loco's that run often in long tunnels, namely that the air intakes for the radiators are high on the body and thus in tunnels tend to suck in the hot air that is blown out the top of the exhaust fans and collects at the top of the tunnel. The result of this is overheating of the engine. The solution? Lower the intakes so as to pull in the cooler air from the lower portion of the tunnel. Thus tunnel motors typically have a large ratiator grating on the rear of the roof where the two or three exhaust fan housings are normally located (these fans are internal on tunnel motors) and the intake grating which is normally near the roof line toward the rear of these engines is located down just above the walkway floors.
Ron