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@ironman1 posted:

It's always something. So what is the size of the fans on the model?

Both GP7 units and most GP9 units had 36" diameter fans. Much later GP9 units (phase III or IV ?) had a larger 48" diameter fan behind the cab, plus a single 48" dimeter fan on the rear of the long hood. Those would have been the up-grade three phase AC cooling fans, used on all later EMD model GP types.

Last edited by Hot Water

I have to pull my books but the first Redbirds numbers 500 to 505 had four smaller fans and the dynamic brake fan.  They were Phase II bodies while the rest were Phase III. The second batch of Redbirds 506-521 had two 48” fans and the dynamic brake fan so this is numbered wrong. I haven’t opened the second unit to see what that number is.

Last edited by VGN64
@VGN64 posted:

I have to pull my books but the first Redbirds numbers 500 to 5?? had four smaller fans and the dynamic brake fan.

Nope. The N&W "Redbirds" had the single 48" cooling fan behind the cab, with a single 48" fan over the main radiators on the rear of the long hood. NO 36" cooling fans. I just happen to have the original EMD Engineering Dept. order file, plus 8X10 builder photos. As a result, I had 3 HO scale models built to match the N&W "Redbirds", which happened to ride in 1962, during my assignment on the new EMD high nose GP30 units to the N&W.

The second batch of Redbirds had two 48” fans and the dynamic brake fan so this is numbered wrong. The second batch continued with 5?? and went up.  I haven’t opened the second unit to see what that number is.

N&W 500-505 were built as freight units 762-767 on order 5486 in Feb/1957. They were rebuilt in Roanoke to passenger units with the bigger water fuel tanks and longitudinal air reservoirs. They did have the 4, 36" fans.  Units 506-521 were built on order 5583, built Nov 1958. They were built as passenger units, were phase IIIb and had 48" cooling fans.

The information is straight from the book N&W First Generation Diesels by Withers and Bowers plus I have photos to back it up.  The first 5 came were Phase II bodies, painted in black, were numbered 562-567 but were shopped with longer combined fuel/water tank added, renumbered 500-505, painted red with the script herald on circular plates on each end and script herald painted on the cab sides.  All the heralds had a black background for the delux gold lettering.  When 506-521 were delivered they were Phase III with the 48" fans, painted red with the script heralds.  The front and back heralds were on circular plates sticking out from the ends while the cab heralds were painted directly on the cab all with a black background.  When all the units were painted to Pevlar Blue they changed the herald to the hamburger style, painted onto the ends and cab with out a black background.

My understanding is paint scheme P3, hamburger logo, was during a very short period before P4, blue paint with hamburger logo, came into effect with a major repaint effort.  I would think 500-505 were the most likely to get a hamburger herald as they were the oldest paint jobs.  The picture of 500 with the hamburger herald is in Withers-Bowers book.  We all know no matter what you paint sooner or later you you will find a variation.

The photo certainly shows the logo for the blue units however its hard to tell the color paint in a black and white photo.

I tried to colorize it using a program I made to aid in this debate. Link to Photo

You can kinda see the hint of red near the cab, but it doesn't look too good. I will try to work on it to make the red stand out more.

Bryce

@VGN64 posted:

My understanding is paint scheme P3, hamburger logo, was during a very short period before P4, blue paint with hamburger logo, came into effect with a major repaint effort.  I would think 500-505 were the most likely to get a hamburger herald as they were the oldest paint jobs.  The picture of 500 with the hamburger herald is in Withers-Bowers book.  We all know no matter what you paint sooner or later you you will find a variation.

Yep.  The model is gorgeous.  I think 3rd Rail did a great job overall from what I've seen and produced a very accurate model.  Getting the exact specific paint details correct is a great bonus - but to me it's about the physical dimensions, proportions, and details - in this regard they are some of the finest models.  At least paint is easy to change down the road vs. fixing a broken model or changing the shape/makeup of the overall model.

@L & N posted:

If you look at Jonathan Sethian's Pennsy GP9 posted on weekend photo fun, you clearly see 48" fans. Look what fell out of mine as I unwrapped it. How about making some of the correct panels? Seems to me that the correct parts were indeed produced.

IMG_1281-2Steve

Amazing - you may be on to something there!  I went on the weekend photo thread and can see what you mean.  If you look close you can even see the rear 48" fan is on a similar panel like your twin 36" ones above.   On the other GP9 thread when I asked about the PH3's it sure seemed that only the PH2 was made, yet there is a pic of a PH3.  What a rodeo this is turning out to be!!!

@L & N posted:

N&W 500-505 were built as freight units 762-767 on order 5486 in Feb/1957. They were rebuilt in Roanoke to passenger units with the bigger water fuel tanks and longitudinal air reservoirs. They did have the 4, 36" fans.  Units 506-521 were built on order 5583, built Nov 1958. They were built as passenger units, were phase IIIb and had 48" cooling fans.

The 762 - 767 were built as passenger units, coming from EMD equipped with a steam generator. Later modifications included the larger fuel & water tanks including an additional water tank in the short hood.

Des Plaines should also have them.

P&D had a bunch of other stanchions including plastic one by PSC.  I ordered different types as I can use them elsewhere.
P&D Hobby Shop

CUF1032.

<form action="https://www.pdhobbyshop.com/Store/product_info.php?products_id=462&action=add_product" method="post" name="cart_quantity">

$32.95

Handrail Stanchions, EMD GP-7/9, cast type

</form>
Last edited by VGN64

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