Hi, I was at the dunes riding 4 wheelers this wheekend in Whynoka, OK, the dunes are a little out side of the town. The BNSF panhandel sub runs through that town at about 70+ mph. The line was origonly a Santa Fe line and their is a depot/harvy house that was restoerd and now there’s an El Charo restrant in it. Out side of the reastrant there is a Hudson bay lines loco. I got a closer look at it (no fence aroung it) and it had a Central Kansas railway patch on it and on the cab it said GP-10. I’ve herd of a 9 but not a 10. If I would have had a camra with me I would have gotton pics.
They were rebuilt GP9’s .
A GP10 is what you get when you rebuild a GP9. The Illinois Central had three programs to rebuild their old GP9’s. The first was the GP8, the second was the GP10 and the third was the GP11. The GP10 had a 567c prime mover that developed 1,750 hp (1.3 mw).
IC also provided GP8/10 rebuilds to Conrail. IIRC, the first CR GP10s had rebuilt cabs with chopped noses. But the feature was dropped from the later ones as a cost saving measure.
Nick
A GP10 is a rebuilt GP7 with a chopped nose and a paper air filter. One of the most common was the Horst paper air filter which is the big box like unit just behind the cab. The same upgrade was applied to GP9’s with the designation of GP11’s.
The only “official” deisgnations are GP-7 and GP-9, because that’s what EMD called them. In the late sixties and early seventies, many railroads began rebuilding their aging fleets of “geeps” in an attempt to extend their useful lives, rather than purchasing new medium horsepower locomotives. The most famous of these programs was conducted by the Illinois Central at their Paducah, KY shops, beginning in 1967. The Paducah program usually included installing a rebuilt prime mover (diesel engine), new or rebuilt electricals, new control stands, new air filtration systems, and a lowered (or “chopped”) short hood for better forward visibility. Often, they also added two more exhaust stacks (for a total of four) presumably to improve engine performance by reducing exhaust back pressure. Because of this and other improvements related to engine performance, the prime movers all achieved an increase of approximately 100 hp after being rebuilt. On the IC, these rebuilds were re-christened as either GP-8s (rebuilt GP-7s, re-rated to 1600 hp) or GP-10s (rebuilt GP-9s, re-rated to 1850 hp). My bet is that these designations were chosen because the rebuilt locomotive was “one better” than it had been before the rebuild. There is a series of articles on the prototype Paducah rebuilds and on modeling one from an Athearn Geep in the March and April 1975 issued of Railroad Model Craftsman. A note in that article claims that EMD was less than pleased with the IC’s twist on their model designations.
Many other railroads conducted similar rebuild programs (some even sent their engines to the IC for rebuilding at Paducah), and some applied the same un-official model names to their rebuilds, but GP-8 and GP-10 were not always consistent. I have heard of some rebuilt GP-9s that were referred to as GP-11s, and there is one heavily rebuilt GP-9 I am familiar with that has the model designation GP-16 wri
I’ve got 6 of them that service my local branch line. Rebuilt GP-9’s. I think I read they were originally built in the late 50’s-early 60’s.
http://www.patriotrail.com/news_detail.php?NewsArticleID=14&ProjectID=100
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