Author Topic: Rock Island F Unit Details  (Read 1174 times)

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dmidkiff

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Rock Island F Unit Details
« on: January 25, 2017, 09:35:03 PM »
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A few months ago @Bendtracker1 sent me some units to paint up for him, one of them being an F7A unit.  There is a detail on the top of the loco that neither of us could identify, but Allen did some nice work to add what he thought was a radiator of some kind. I've got an F7 on my roster and was having trouble identifying lineage for it, but after seeing Allen's work, decided I would model a Rock Island unit, the same one he did.  Can anyone tell us what this detail is?  Just behind the door up on the roof...

Prototype:



Allen's work:


My work:


Unrelated, but what kind of horn did I use?  It's an Atlas horn from their B23/30/367, part number 9497204.  They list it as a 3-chime horn for the locomotive, no idea if it's a Nathan or whatever.

Thanks, Doug

wcfn100

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Re: Rock Island F Unit Details
« Reply #1 on: January 25, 2017, 09:59:04 PM »
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Take a look at the Athearn FP7.  It a cooling pipe that winds back and forth.



The link might give you a bigger picture.

http://cdn3.volusion.com/ztna9.tft5b/v/vspfiles/photos/ATH-G22551-2.jpg?1456472651

Here's Details West.




I can't be sure from your photos is it's the same as there was a second style that I'm trying to locate.

Jason
« Last Edit: January 25, 2017, 10:10:20 PM by wcfn100 »

cjm413

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Re: Rock Island F Unit Details
« Reply #2 on: January 25, 2017, 11:04:31 PM »
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A few months ago @Bendtracker1 sent me some units to paint up for him, one of them being an F7A unit.  There is a detail on the top of the loco that neither of us could identify, but Allen did some nice work to add what he thought was a radiator of some kind. I've got an F7 on my roster and was having trouble identifying lineage for it, but after seeing Allen's work, decided I would model a Rock Island unit, the same one he did.  Can anyone tell us what this detail is?  Just behind the door up on the roof...

Prototype:



Allen's work:


My work:


Unrelated, but what kind of horn did I use?  It's an Atlas horn from their B23/30/367, part number 9497204.  They list it as a 3-chime horn for the locomotive, no idea if it's a Nathan or whatever.

Thanks, Doug

Here are some better shots of some RI F7's - note that the cooling pipes are in the same location where the dynamic brake fan would be on a dynamic brake equipped F7:





dmidkiff

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Re: Rock Island F Unit Details
« Reply #3 on: January 26, 2017, 12:18:00 PM »
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Thank you guys for the clarification. 

So these F7's did not have dynamic brakes, it's either the fan or cooling pipes? The cover over that area should not have the fan and should be smooth?

I'll need to move my part and figure out if I want to bend more wire or try to find another way to simulate the piping.

Doug

robert3985

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Re: Rock Island F Unit Details
« Reply #4 on: January 27, 2017, 03:06:29 AM »
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To assist you in "bending pipe" out of brass, you can soften (anneal) brass easily by running it through a flame until it starts to turn red...this phase is known as being "straw-colored"...then remove it and immediately quench it in water.  Wipe or steel-wool off any carbon deposits and bend with slim-jawed pliers.  You'll be amazed at how easy it is to bend brass wire into complex shapes after annealing it and making it much softer.

Photo (1) - Here's an N-scale aftercooler I bent up for my super-detailed Key Big Boy several years ago:


Cheerio!
Bob Gilmore

wcfn100

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Re: Rock Island F Unit Details
« Reply #5 on: January 27, 2017, 03:36:16 PM »
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Before this gets too far it should be pointed out that the RI cooling pipes ran 90 degrees to what the Athearn and Details West images show.

Jason

dmidkiff

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Re: Rock Island F Unit Details
« Reply #6 on: January 27, 2017, 09:24:57 PM »
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Good advice Bob, thanks.

Good to know Jason, I believe I can see the shadows on the 180 degree curves in the photo of 403, they are oriented 90 degrees from the Athearn and Detail West.

Doug

Wutter

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Re: Rock Island F Unit Details
« Reply #7 on: January 29, 2017, 02:09:35 PM »
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Slightly different series of Rock Island F7, but to make my cooling coils I used 26 or 28 gauge magnet wire and bent it into the switchback shape and made the standoffs lifting it off the roof from 0.010 stainless wire. The copper wire used the make the cooling coil makes bending it a lot easier, and you can set the shape once you're done by just applying some CA on the backside.
Alvin
Owner of Wutter Vehicles and Details
https://www.shapeways.com/shops/wuttervehicles

GhengisKong

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Re: Rock Island F Unit Details
« Reply #8 on: January 30, 2017, 11:20:32 AM »
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The Rock used mostly Nathan P5s and P3s(P5s preferred). The closest n scale match to the Rock's P5 style is the BLMA Nathan K5HR24. Still waiting on Atlas to restock that part....
I think Miniatures by Eric part NH-6 is a match for the P3 if I'm not mistaken. I have yet to purchase it, but it will be on my next order.
« Last Edit: January 30, 2017, 11:22:47 AM by GhengisKong »