Some time ago, I posted a thread asking for information on this locomotive. Many kind forums members replied with information and suggestions (HotWater-thanks for the book suggestion & bob2 for the information), including a few of you who I regularly e-mail with (My new friend Doug-you'll find one someday!).
I've added 2 of these locomotives to my collection. They are outstanding runners and 'glass' smooth at low speed. Not the best smokers, but I don't use that feature much anyhow.
They're difficult to find but infrequently available: I found one on an auction site-it wasn't as described to say the least. The second one was found at an estate auction and was NIB (priced accordingly). Pure luck, only 3rd Rail locomotive in the collection!
There were 250 units made, all released in 2001. I don't know if that was 2 and 3 rail combined or not. The 3R version had TMCC and Rail Sounds. Of course, brass construction was standard.
Above: The locomotives are the same black hue, the lighting makes them look different.
Above: #3900 was the first in the Union Pacific Challenger Class (left).
Above: Detailed close up of the cab area.
Above: This is my favorite picture of the pair. I can almost imagine being track side as they pass.
Above: For those not familiar, I included a picture of the Fetter's Challenger (on left) and the Jabbleman Challenger (on right). About the only thing they have in common is the wheel arrangement.
The 3rd Rail 'Early Challenger,' as they call it, is an outstanding locomotive even compared to modern standards. It's construction is top-notch and the large Pittman can motor combined with the massive weight of the model will pull as many scale reefers as you can put behind it. It's a beautiful model of the Fetter's Challenger that hasn't been done in O Scale 3 rail by any other major manufacturer (Lionel/MTH).
If you find one you won't be disappointed!