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  1. #1
    Join Date
    Feb 2010
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    Napa, CA
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    Minimum radius curve for Atlas Cab Forward 2-8-8-2

    Hello
    I'm using Atlas Code 80 snap track. Can someone give me an approximation of the minimum radius an Atlas Cab Forward 2-8-8-2 might negotiate?
    Thks,
    Gary

  2. #2
    Join Date
    Sep 2005
    Location
    Loveland, Oh
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    46
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    2,925
    There is no such thing. Atlas never made a cab forward, just a standard cab USRA 2-8-8-2 that was a questionable runner at best. The only N scale cab forward ever produced besides brass is the Intermountain AC-12. I'm not sure on the AC-12 but I think minimum radius is around 12-14".
    Tony Hines

    New Railimages Album: http://www.trainboard.com/railimages...r/4676/cat/500
    Abraham Lincoln - "Better to remain silent and be thought a fool than to speak out and remove all doubt."

  3. #3
    Join Date
    Dec 2009
    Location
    Alameda
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    1,054
    I've seen a few older Atlas units modified into cab-forwards.... maybe he's got someone's prior kitbash? Interested to know!
    -Trains, Cigars, & Classic Cars-
    http://huntershobbies.wordpress.com/

    (Always on the lookout for N scale Northern Pacific stuff....)

  4. #4
    Join Date
    Sep 2002
    Location
    Island of Misfit Toy Trains, So-Fla
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    57
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    2,829
    I think you've got the type of engine that is generally an articulated... so... whatever the manufacturer is... the likelyhood is that you should have a minimum radius above 15"... and that is going to be sort of tight if it is a 2-8-8-2 MALLET articulated. Not only is it tight for good running characteristics... but the overhanging pilot is not going to be a very attractive look either. Going into the curve it might wipe-out scenery that's within a 1/2" of the track. DO NOT run them into a tunnel portal on a curve unless you use a double wide portal or modify the portal to accomodate the overhang.
    Grandpa "Joe",
    Burlington Rio Grande & Pacific
    A fictitious precursor to the
    BN merger and Amtrak


    Zephyrs Through the Rockies.

    Rail Images Album: http://www.trainboard.com/railimages...name/calzephyr

  5. #5
    I ran an Atlas 2-8-8-2 on a "Scenic Ridge" layout, so based on that it should be able to handle curves as sharp as 9.75"-radius.

    -Mark

  6. #6
    Join Date
    Dec 2009
    Location
    Reno, Nevada
    Age
    67
    Posts
    206
    I would just get a couple pieces of flex track and before you draw you track plan lay it out on the bench and see what the engine will do by making a tighter turns till it jumps. I also think that when it start to look funny going around the curve it time to quit anyway as your almost there to a derailment anyway.

  7. #7
    Join Date
    May 2005
    Location
    Indiana
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    58
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    3,601
    How about a picture of the engine?
    Keep on rockin in the free world

  8. #8
    Join Date
    Jan 2010
    Location
    Southampton, England
    Age
    66
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    226
    Quote Originally Posted by EMD F7A View Post
    I've seen a few older Atlas units modified into cab-forwards.... maybe he's got someone's prior kitbash? Interested to know!
    http://www.trainboard.com/grapevine/...4&d=1284991738
    You mean like this? Rowa chassis, but same body as Atlas/Rivarossi

  9. #9
    Join Date
    Sep 2005
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    Loveland, Oh
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    Quote Originally Posted by bobthebear View Post
    http://www.trainboard.com/grapevine/...4&d=1284991738
    You mean like this? Rowa chassis, but same body as Atlas/Rivarossi
    The Atlas body is not the same as the Rivarossi. The Rowa/Rivarossi/Concor version is a N&W Y-6B. The Atlas version was a USRA 2-8-8-2 built by Samongohsa. They are completely different. The Y-6B is a much larger loco than the USRA 2-8-8-2.

    The cab forward in the picture is based on the Y-6B boiler, not the Atlas.
    Tony Hines

    New Railimages Album: http://www.trainboard.com/railimages...r/4676/cat/500
    Abraham Lincoln - "Better to remain silent and be thought a fool than to speak out and remove all doubt."

  10. #10
    Join Date
    Dec 2009
    Location
    Alameda
    Posts
    1,054
    Quote Originally Posted by bobthebear View Post
    http://www.trainboard.com/grapevine/...4&d=1284991738
    You mean like this? Rowa chassis, but same body as Atlas/Rivarossi
    Now THAT must have been a fun project! Very cool, looks close enough to me!

    (rivetcounting be damned! Nostalgia modeling FTW!)
    -Trains, Cigars, & Classic Cars-
    http://huntershobbies.wordpress.com/

    (Always on the lookout for N scale Northern Pacific stuff....)

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