T & P GP-9

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  • August 31, 2015 at 6:16 pm #5485
    evangeline.higgins
    Participant

    I need some help from some of our T & P diesel experts. Years ago I bought a P2K GP 9 with dynamic brakes. When I pulled the shell out of the box in preparation of finishing it I noticed the dynamic brakes and since I model mostly MP locomotives I could not imagine why I bought a model with dynamic brakes. Then I found a note that said “ex T & P”. I did some research and found that the T & P did have GP 9’s that were purchased with dynamic brakes. I found a beautiful photo of MP 394 in Dark Eagle Blue paint with the buzzsaw logo and TP sublettering. Perfect for the model shell that I have. I also have a photo of MP 360, an MP GP 9 without dynamics. MP 360 has the typical exhaust setup with four spark arresters running in a straight line axis relative to the locomotive. My photo of MP (TP) 394 with the dynamic brakes has a very odd layout of the exhaust spark arresters. Two of the arresters are forward of the dynamic brake fan and two are behind the fan. But they are offset to the left and right on both sets of spark arresters. Can any of you explain how the exhaust system was laid out or have access to a diagram so that I can lay the exhausts in the correct positions on the model? Any info will be very helpful.

    Bill Herbert

    September 2, 2015 at 9:35 pm #7184
    evangeline.higgins
    Participant

    The photo of MP 394 (ex T & P 1139) appears to my eyes to have staggered spark arresters. It may be an optical illusion as the arresters may be at different heights. Does anyone have an overhead shot of one of these GP9’s that shows the layout of the spark arresters on units with dynamic brakes?

    Bill Herbert

    September 3, 2015 at 1:12 pm #7186
    clemmie_doris12
    Participant

    Bill,
    It is an optical illusion. The two spark arrestors on either side of the dynamic brake fan sit higher than the other two. I’m not exactly sure of why they are like this, but it, obviously, has something to do with the location of the dynamic brake components in this area.

    Another interesting feature on this engine is the horn. It has a Leslie 3-chime horn rather than a pair of A200 honkers.

    September 3, 2015 at 2:35 pm #7187
    evangeline.higgins
    Participant

    Kevin, Thanks for clearing this up. I have been struggling with this issue for a week. I have seen two photos and both appear to have the spark arresters staggered side to side. Your explanation makes sense now. A really interesting optical illusion!

    Bill Herbert

    September 3, 2015 at 4:58 pm #7189
    peggyrothschild
    Participant

    Bill
    Here’s another shot of a T&P GP9 in the last MP diesel paint scheme with the DB blisters and the spark arrester arrangement.
    http://www.trainweb.org/screamingeagle/mp_loco/collection_greuter/mp1848.jpg

    September 3, 2015 at 10:22 pm #7190
    mopac
    Keymaster

    I have a couple of very bad photo’s (Kodak Instamatic camera) of #1841 in July, 1975 at Conway Springs, KS. It still has the high hood, DB blister and the 4 spark arrestors in line (front to rear). It has the 48 inch fans and a single chime horn centered on the cab roof, facing forward. (probably another somewhere, but I can’t tell.) It is the rear unit behind GP-38-2 2051…May be power on the Conway Turn out of Wichita? (or possibly one of the locals out of Conway?) The point is, on the worst photo…you can tell from the angle that the exhaust is “in line”, rather than staggered to the side.
    Scanner not available right now. Sorry.

    September 6, 2015 at 8:58 pm #7205
    mopac
    Keymaster

    Here are a few shots I took of TP GP9’s. Three still have the dynamic brakes and four are without the dynamic brakes.

    September 9, 2015 at 4:15 am #6872
    mopac
    Keymaster

    Bill – and all,

    I kept thinking I could find a photo of a T&P Geep with the DB louvers on the side of the unit plated over with the hump still in place….I didn’t find one yet. (maybe I’m just making that up?? who knows?)
    But, I did find an excellent explanation of “The Four Stack Phenomenon” with a photo of an EMD 567 engine with the exhaust manifolds in the original configuration and the explanation of the changes the MP and others made to the exhaust. It also explains why some units would have the 4 stacks evenly spaced and others had them in two groups of two.
    I hope everyone has ‘Missouri Pacific in Color, Volume 2’ by Jim Boyd, because it’s on page 39.
    Enjoy….

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