Model Railroading > GP7/GP9 Winterization Hatch Dimensions

Hi All

I am looking for dimensions of the winterization hatch used on GP7s and GP9s. I need to make one for a 1/8 scale project I am working on.

Thanks

Tim

Well, if you can't find dimenisons maybe you can just buy an HO one and multiply by 10.88? Of course, if you had a set of verneir calipers, that would help.

Victor A. Baird
http://www.erstwhilepublications.com



Edited 1 time(s). Last edit at 09/12/19 16:54 by wabash2800.

The winterization hatch on late -9's with 48 inch fans was larger than the engines with 36 inch fans..

Using Victors method, my "O" scale model with 36" fans scales out to 59" x 43.5" x 12" with a 36" square exhaust screen.

-LD



Edited 1 time(s). Last edit at 09/12/19 15:06 by LarryDoyle.

wabash2800 Wrote:
-------------------------------------------------------
> Well, if you can't find dimensions many you can
> just buy an HO one and multiply by 10.88? Of
> course, if you had a set of vernier calipers, that
> would help.
>
> Victor A. Baird
> http://www.erstwhilepublications.com

I have a Details West WH-164 Winterization Hatch. But it looks to short. Where there different sizes used with the 36" fan?

Tim

LarryDoyle Wrote:
-------------------------------------------------------
> The winterization hatch on late -9's with 48 inch
> fans was larger than the engines with 36 inch
> fans..
>
> -LD

Yes I know.

Tim

As an aside, I recall someone scrathbuidling one from styrene wiith it illustrated in one of the model train magazines some years ago. Sorry,  I can't remember the prototype or if it was a project itself or part of a superdetailing project. I recall the modeler using a rectangular piece of plastic and folding the sides down--but the corners and edges were rounded. 

Perhaps if there is one at a museum somewhere, someone can provide measurements and photos.

Victor A. Baird
http://www.erstwhilepublications.com



Edited 3 time(s). Last edit at 09/12/19 16:55 by wabash2800.

The Proto 2000 measures like this
Length .728
Width .551
Height .136
If you need the openings let me know and i'll measure those too.
Good Luck

BNModeler Wrote:
-------------------------------------------------------
> The Proto 2000 measures like this
> Length .728 = 63.336"
> Width .551 = 47.937"
> Height .136 = 11.832"
> If you need the openings let me know and i'll measure those too. It should be 36" x 36" = 0.414"
>
> Good Luck

Thanks

Tim



Edited 1 time(s). Last edit at 09/12/19 17:31 by fltenwheeler.

Now, do you know what the winterization hatch does?

-LD

LarryDoyle Wrote:
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> Now, do you know what the winterization hatch does?

It has a flap that can redirect warm air from one cooling fan back into the engine room. I remember seeing some NYC Geeps that had one cooling fan (the one closest to the cab) covered with a steel cap that neatly fit over the fan housing to accomplish the same thing. Here's a photo of one in PC paint (the corresponding radiator grill is also covered):

https://www.railpictures.net/photo/266356/



Edited 3 time(s). Last edit at 09/12/19 20:24 by CPR_4000.

I found some great pictures of a winterization hatch here. The Details West hatch is a lot shorter than the one in the pictures.

Tim

http://trainiax.net/mephotosearchresults.php?p_mark=CP&p_roadnumber=8201

Here is a scan of the winterization hatch instructions.

Tim

---

fltenwheeler Wrote:
-------------------------------------------------------
> I found some great pictures of a winterization
> hatch here. The Details West hatch is a lot
> shorter than the one in the pictures.

I think the Details West hatch is meant for F units.

I ended up making it 4' x 6' x 14.625". In 1/8 scale it is 6" x 9" x 1.83".

Tim

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I can measure the housing on our Western Pacific GP7, 713 on Monday if you wish.
Howard

---

That would be great.

Thanks

Tim

Posted from iPhone

Alaska Railroad F's and many Canadian F's had two or at least two housings stacked on top of each other making them quite tall, I looked close on our two ex-Alaska FP's and one B-unit on the WYCO, and the roof curve was visible on both top and bottom housings so they were definitely two of the same stacked, each with their own controls. Though I knew what the winterization hatches were for, I never understood how two stacked improved their operation. === === = === JLH
 

As promised, after the rain this morning (???)  I climbed up on the hood of WP 713 and measured the hatch.

It is 70" long by 46" wide and 12" high.  The screened opening is 32" long by  27 1/2" wide

I am sure your are aware that the GP7/early GP9 fans are 36" in diamater.  Later GP9's only have 2 fans per radiator bank and are 48" in diameter.

Howard

Thank you very much. It just goes to show you that you should not trust another model.

Tim

Posted from iPhone