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Tunnel Motors??

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  • Member since
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Tunnel Motors??
Posted by Anonymous on Tuesday, August 16, 2005 2:37 PM
Why do they call them tunnel motors and what type of engine is it? (ie: GP 60)

Thanks, Ben
  • Member since
    April 2003
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Posted by Anonymous on Tuesday, August 16, 2005 2:45 PM
the first tunnel motors were electrical, they were called "tunnel motors" because they didn't foul the air in tunnels like steamers did. after the transition to diesel the need for tunnel motors was pretty much eliminated.
  • Member since
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  • From: West Coast
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Posted by espeefoamer on Tuesday, August 16, 2005 2:51 PM
Tunnel motors came in two models, SD 40T-2 and SD45T-2.They are called tunnel motors because they take air in for cooling the radiators from low on the unit instead of near the exhaust fans.This kept the engines from getting choked up from drawing in the hot air that accumulated in long tunnels.The only two origanal buyers were SP and the Rio Grande.SP had both SD40T-2s and SD45T-2s. Rio Grande bought only SD40T-2s.
Ride Amtrak. Cats Rule, Dogs Drool.
  • Member since
    February 2005
  • From: Sweden
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Posted by electrolove on Tuesday, August 16, 2005 4:14 PM
Here is two pictures of a tunnel motor. Rio Grande 5405. And you can see as espeefoamer explained where it takes the air.



Rio Grande Zephyr 5771 from Denver, Colorado to Salt Lake City, Utah "Thru the Rockies"
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  • From: Amish country Tenn.
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Posted by loathar on Tuesday, August 16, 2005 4:25 PM
If you want to have fun, go over to the Trains mag forum and ask about tunnel motors and why and how they work.Just watch the slew of different answeres you get.[:P]
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Posted by Anonymous on Tuesday, August 16, 2005 4:25 PM
U gotta love those DRGW T-Motors!! [:D]
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Posted by Anonymous on Tuesday, August 16, 2005 4:27 PM
Aie wants sssommm! They ssstole its fruuummmeee!

I hunting couple in N scale. I might go with the Intermountain versions.
  • Member since
    February 2005
  • From: Los Angeles
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Posted by West Coast S on Tuesday, August 16, 2005 7:36 PM
The Clinchfield tested a D&RGW set and placed an order with EMD for a even dozen, the CSX takeover of Clinchfield killed the deal.

Dave
SP the way it was in S scale
  • Member since
    April 2002
  • From: Frankfort, Indiana
  • 424 posts
Posted by Morpar on Wednesday, August 17, 2005 12:30 AM
There are still quite a few of them out and about. I recently got some photos of a former SP SD45T-2 in Frankfort, IN. I was doing a little looking, and found something even stranger though. Some of the D&RGW SD40T-2 units made it to Brazil and were modified a little. Instead of a pair of 6-wheel trucks underneath, they have 2 pairs of 4-wheel trucks with extended frames! There are some other changes that have been made too, like I think that they may also be NARROW GAUGE now! Here is a link to the category for these:
http://www.rrpicturearchives.net/locoList.aspx?mid=996
And then an actual photo:
http://www.rrpicturearchives.net/showPicture.aspx?id=128282
The site also has photos of Brazilian BB36-7, BB40-2, BB45-2, and DDM45MP locos from here:
http://www.rrpicturearchives.net/modelList.aspx
I did a Google search and got a little information, but not much. I am considering a model now though.....

Just what I need, ANOTHER danged project!!!!

Good Luck, Morpar

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