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locked Southern FP-7 Details
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SouRwyFan
Hi all,
I am working on a project and trying to gather info on FP-7's. Anybody got dimensions or drawings of rooftop piping? (Were they cooling coils or air lines up there?) Also what about location of backup headlight and other details of rear of units? I know it's a stretch but what about painting diagram/Spec sheet? Thanks! RS
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I know Bob Harp did one of these on the old Southern Modeler site. Check to see if it is still there.
On Thu, Feb 7, 2019 at 7:08 PM SouRwyFan via Groups.Io <blackaerocoupe=yahoo.com@groups.io> wrote: Hi all, --
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File section of the Yahoogroup migrated to groups.io has drawings.
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George Eichelberger
There does not appear to be any drawings of rooftop cooling pipes for FP-7s in the SRHA archive scans. As many early photos of Southern FP-7s do not show the pipes, I expect they were added after delivery by the Southern. If that is correct, the shops may have simply used the drawings created for E-6 and E-7s. I have uploaded one of them before so here is a different, DL-3253, showing how the rooftop pipes were connected to the engine cooling systems. Most of the E-6 pipes had fins to increase their heat dissipation but plain pipes appear to have been used later (a cost consideration as the finned pipes were a special purpose?)
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Ike 
On Feb 7, 2019, at 6:59 PM, SouRwyFan via Groups.Io <blackaerocoupe@...> wrote: Hi all, I am working on a project and trying to gather info on FP-7's. Anybody got dimensions or drawings of rooftop piping? (Were they cooling coils or air lines up there?) Also what about location of backup headlight and other details of rear of units? I know it's a stretch but what about painting diagram/Spec sheet? Thanks! RS
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D. Scott Chatfield
As far as I know the long cooling pipes mounted alongside the radiator fans were aftercooler pipes between the air compressor and the main reservoir. Sounds like the finned pipes on the E6s and E7s had a different purpose. Remember, the radiators on the early Es were nothing like those on the Fs or E8s. My understanding is the aftercooler pipes were a retrofit offered by EMD after being made standard on the F9. So perhaps installed after 1954. Many railroads added them to their earlier Fs. In HO, I think Bowser sells an aftercooler pipe assembly for F units. Scott Chatfield
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Gary Bechdol
Highliners also has aftercooler pipes for F-units. Gary
On Sat, Feb 9, 2019, 4:18 PM D. Scott Chatfield <blindog@... wrote:
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Southwest Scale Productions offers HO scale FP7-F9 after cooler piping for sale which is also sold by Highliners. Justin May
On Feb 9, 2019, at 14:59, D. Scott Chatfield <blindog@...> wrote:
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