RailPictures.Net Forums

RailPictures.Net Forums (http://www.railpictures.net/forums/index.php)
-   Railroad Photography Forum (http://www.railpictures.net/forums/forumdisplay.php?f=9)
-   -   Something I shot today (http://www.railpictures.net/forums/showthread.php?t=12933)

baldwin8 10-07-2010 08:03 PM

Something I shot today
 
1 Attachment(s)
I don't think it is really unusual but could someone tell me some details of what it is used for. I've seen it referred to as a CN IOX.

I was thinking about submitting it to RP.net but the sun was not at it's brightest.


Attachment 5838

Freericks 10-07-2010 08:34 PM

It's a slug. It has traction motors that draw their power from the prime mover of a normal diesel locomotive. Using a slug gives you more pulling power at low speeds by applying the horsepower to additional traction motors.

They are mostly used in yards and transfer moves.

trainmaster_1 10-07-2010 11:43 PM

Quote:

Originally Posted by baldwin8 (Post 122559)
I don't think it is really unusual but could someone tell me some details of what it is used for. I've seen it referred to as a CN IOX.

I was thinking about submitting it to RP.net but the sun was not at it's brightest.


Attachment 5838

They are called slugs, or as CN calls them YBU-4 (Yard Booster Unit). They provide additional tractive effort (and stopping effort) at low speeds where they are best at since high horsepower isn't a big concern, the GP9RM/Slugs sets are rated for 10,000 tons on dry rail when we use them for pull down and industrial assignments at MacMillan Yard.

coborn35 10-08-2010 02:33 AM

We have one up here in Duluth. Slug between two GP9RM's.

[photoid=339144]

lock4244 10-08-2010 01:37 PM

Quote:

Originally Posted by trainmaster_1 (Post 122568)
They are called slugs, or as CN calls them YBU-4 (Yard Booster Unit). They provide additional tractive effort (and stopping effort) at low speeds where they are best at since high horsepower isn't a big concern, the GP9RM/Slugs sets are rated for 10,000 tons on dry rail when we use them for pull down and industrial assignments at MacMillan Yard.

Com'on Michael, CN rates everything for at least 10,000 tons ;-)


All times are GMT. The time now is 10:13 AM.

Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.