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PRR GP9 7006


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This loco started life as an American Models GP9 plastic model. This was my first ever extensive modeling project. It started as a painted PRR model. I was in HO, until about 1987 not really “modeling” but doing some painting of Athearn and other cheap cars when I moved to S Scale. My first bought train photos were of a GP9. I wanted to “improve it”, buy adding antennas and a few other things but turned into a full on redo. GP9 7169 was first presented at the 1990 NMRA/NASG convention in Pittsburgh PA. I took first prize in Diesel Amateur category, scoring more points than the Craftsman class. Pretty much every aspect of the model was changed and detailed for PRR. Since I was new to S, and to modeling at this level, I was not aware of what was made in the way of details. Besides the antenna stanchions, coupler cut levers, I MADE EVERYTHING. I made the cab seats, the MU stands, ratcheting brake lever, open grated steps and pilot platforms. I made slide in inserts to fill in the coupler opening on the pilots. When I went to the Pittsburgh NMRA Convention, I met Jettie Padgett for the first time who showed me the table full of Southwind (now BTS) brass detail parts already available, many of the same detail I made. It was a funny introduction into S Scale modeling.



My GP9 was built as 7169 in 1989


This is how 7169 looked as I built it in 1989, before I started the rework in 2006. There unfortunately are no before photos of the loco as bought. The photos were taken 12-2-05. It was still running on DC only at that point. Besides the outside detailing there was a very elaborate lighting system of fiber optics and Dallee constant lighting units trying to light corner markers and numberboards. I was trying to light everything with one light bulb and constant lighting unit. This system all pretty much failed! You could not see anything lit beyond the headlights.


I was otherwise very proud of the outcome, but for many years I was afraid to run it for fear of something breaking. In 2006 I started to update it with DCC, and fix a few inaccuracies I unknowingly made in 1989. I wanted the as built lettering and added the nose Keystones which might have happened once but was not common.



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January 2016

Just for a goof on January 17, 2016 I got the GP9 out of the box and gave it a good look. It was good to see where I left off and what needed to be done. There was a dual motor only and sound only decoder set up from before the Tsunami was available. I ripped that all out and did a quick n dirty decoder install so I could at least see it run.  You can see the major correction of the 5 roof fans where I originally had 3 as built. I worked on it for a while but faded as I often do. Back in the box it went. It was a concurrent project with my PRR GP7 8553 but stalled, and I finished 8553 by itself 6-10-17


These photos were taken 1-21-16.


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Added 2-20-16

These photos were taken 2-14-16. 1 last run before the big tear down. All of the original handrails are now removed, but I wanted to highlight how I originally (in 1989) used styrene nut bolt washers drilled through the Delrin handrails and glued to the body to keep them in place. It worked very well. The handrails never came off.

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January 2018

GP9 7169 Becomes GP9 7006


Added 1-22-18


I have a much larger photo collection now, the internet, some books as references that did not exist when I built this in 1989 and somehow picked the number 7169. I now know GP9 7169 was built in 10-57 WITHOUT antennas, so I am going to change the number to 7006, built 10-55 in the first group of GP9 that had antennas.


Locos that are 30 years old can take on a life of their own so redoing them is a possibility.


Added 2-5-18

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When I picked 7006 as the new number it was because it was an early built unit with antennas, assigned to the Philadelphia Region in 1956 and I had builder’s photos of it. The fact that it is preserved at the Railroad Museum Of Pennsylvania in Strasburg is coincidental.

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I decided to not light the numberboards to better match my 2 GP7, so I filled in the numberboard holes with sheet styrene. Also if you look carefully you can see some deformation around the numberboards. I came within seconds of completely running the shell when I started to modernized it by almost melting and blowing holes in the ends from using 14 volt incandescent headlight bulbs in a test in 2006. That is why there are brass headlight bezel castings and absolutely what put it back in the box for many years. I figured my future self would be able to figure it out. I was right!


Adding brass handrails to a plastic model is massively time consuming.

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This is how I solder brass parts on a plastic model. A resistance soldering unit is a MUST. Soak the cotton ball in water and clip it on for a heart sink. I left a piece of the antenna wire loose to get the cab off.

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This is the final decoder configuration. I decided to keep the first generation Tsunami and add a Current Keeper. The lighting is just the headlights. After almost melting the shell I went real simple for the final build.


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Draft Gear

I thought this was a rather clever way of making the look of a draft gear while the coupler is still attached to the frame. These inserts slide in to fill in the bottom and fill in the opening under the coupler. You can see the open grating I added for the steps and pilot platforms.

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Completed 2-14-18

I have had this loco for about 29 years at this point. We have been on quite the journey together in me trying to make a nice looking PRR GP9. My goal in 2018 was to update and fix some things but use and recycle wherever possible. By far most of the original 1989 parts remained. I could have replaced the MU stands with brass castings but did not. I used the parts I made. The flap window in front of engineer has yellowed a bit with age.


No weathering yet. Maybe later. I need to learn some new weathering ideas.


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Posing with GP7 Brothers 8551 And 8553

They are 3 similar locos with 2 made by me and 1 made by Bob Frascella. There some differences in materials and build style but they look GREAT together. An easy question to ask is which loco is brass and which is plastic. A LOT of work has been done to all the models to get them to look like this.


A GP9b may be in the future to run with 7006 even though they did not arrive until 1959. I have always liked the GP9b.


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Updated 2-14-18

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