Talk:EMD GP9

The last GP9B would be from the Pennsylvania Railroad's order for 10 #7230-7239 which was completed in 12/59. The last GP9s built were Algoma Central #171-172 in 8/63 by GMD in Canada. Domestic US production ended with Pennsylvania #7269 in 12/59. See http://community-2.webtv.net/ajkristopans/ANDRESGMLOCOMOTIVE/ for Serial and Production data --207.69.137.12 18:44, 14 October 2005 (UTC)

Larry Russell's EMD Export Page lists four GP9s exported to Peru and six GP9s exported to Venezuala. See http://emdexport.railfan.net/home.html and look in the model link there. --SSW9389 (talk) 11:18, 1 May 2008 (UTC)

There are a number of units listed on the roster as GP9s that actually are GP9Ms. I will be making notations on these units as I get them sorted out and then make a general comment to the text on what a GP9M is and how it is different from a regular GP9. Also GP9 export units will be added to the EMD total. --SSW9389 16:08, 24 August 2008 (UTC) —Preceding unsigned comment added by SSW9389 (talk • contribs)

N&W GP9 #675 has been restored to operational status and is used for excursions by the Bluegrass Railroad Museum. More information is available here: http://www.bgrm.org/#/locomotives/4514554518. BGTwinDad (talk) 04:46, 26 February 2010 (UTC)

Explain to me how...

the webtv links (such as http://community-2.webtv.net/ajkristopans/ANDRESGMLOCOMOTIVE/page2.html) pass WP:ELNO? Seems to me they also pass WP:FANSITE. If they cannot be sufficiently explained as to WHY they they don't pass either guideline listed, then they should not be included here. Also, if the data was gotten from the EMD product cards, those should be sourced, otherwise those sites are considered original research.   ArcAngel   (talk) ) 23:49, 10 August 2011 (UTC)

Andre Kristopans has placed the data from the EMD Product Data Cards on line. These are from paper GM records, there is only one other online source I'm aware of that attempts to do the same thing with GM records. The original source of the records would be General Motors and its subsidiary companies. The person who has done the work and the original research would be Andre J. Kristopans among others. The holders of these scarce GM records possess pure data on when the GM locomotives were built, for what railroad, what road numbers they were originally assigned, etc. Kristopan's site is unique in that it lists all the export and foreign built GM products. The majority of the GM locomotive rosters were done with data from the Kristopans site. Mr. Kristopans is on Wikipedia, look at the notes he has left on the back pages of some of the F unit articles. --SSW9389 00:24, 12 August 2011 (UTC)

I was unable to find his userpage, perhaps you can clue me in on it?   ArcAngel   (talk) ) 02:55, 12 August 2011 (UTC)

See user 76.223.76.83 --SSW9389 04:01, 12 August 2011 (UTC)

User Graywalls has recently removed information in this GP9 article supported by Don Strack's Utah Rails website. Strack is a highly regarded railroad historian who now hosts Andre Kristopans' EMD Serial Number pages. There are very few sources of this EMD data available to the average person. It would be my contention that Mr. Strack supports Mr. Kristopans work because it is highly accurate and would not have it on his website if it were not. --SSW9389 (talk) 11:31, 4 November 2019 (UTC)

Archived version of the source that is the subject of contention supports ArcAngel's concern. It is original research.

https://web.archive.org/web/20120817092820/http://community-2.webtv.net:80/@HH!E9!89!CF3A4D95E425/ajkristopans/ANDRESGMLOCOMOTIVE/page2.html You argue that these are from "paper GM records". Refer to WP:USESPS regarding the use of internal documents. Your own personal page would be the place to share information as you see fit, but Wikipedia is not the place to share things that do not conform to the sourcing standards regardless of how credible you think a certain person is. Graywalls (talk) 16:56, 5 November 2019 (UTC)

infobox, ref

Dorin, Patrick C. (1972). Chicago and North Western Power. Superior Publishing. pp. 108–110. ISBN 0-87564-715-4. has C&NWRy drawings and spec sheets for #1711, that’s where added info comes from. Sammy D III (talk) 20:50, 26 August 2013 (UTC)

There are other differences between Dorin and The Diesel Shop, including HP. Maybe the difference between 800 and 835 max RPM? Difference in length may be OAL (Dorin) vs. pulling face (others?). Dorin has pulling face dimension lines, but no dimensions. 3 inches per knuckle sound good? Sammy D III (talk) 19:57, 12 November 2013 (UTC)

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GP9 Production Numbers

The article has several different production numbers. In the body of the article, the number 3,436 is listed. The infobox claims a production total of 4,277. When I made some changes to the article today, I just stated production was "over 3,000" since that holds true for both numbers. Does anyone have a reliable source on the correct number of GP9s produced? Trainsandotherthings (talk) 02:43, 2 August 2021 (UTC)

Do you want accuracy or an article that meets Wikipedia standards? --SSW9389 (talk) 08:27, 2 August 2021 (UTC) @SSW9389:, Anyone can give a number and claim that theirs is the accurate one. Therefore, it must be verifiable against a reliable, published source, not including "self publishing" vanity presses. It might be best to just omit it. After all, the contents should be comprehensive, not exhaustive. It is an encyclopedia. Not a production record. Graywalls (talk) 08:31, 2 August 2021 (UTC) Graywalls has attacked noted locomotive historian Don Strack repeatedly and refuses to admit that the best source of EMD information online is maintained at https://utahrails.net/ajkristopans/ajkristopans-index.php Any attempt to follow Graywalls example adds a certain level of mediocrity to the information on Wikipedia. Production records exist and should be used. Any source that doesn't use production records is flawed and should not be included on Wikipedia. --SSW9389 (talk) 08:42, 2 August 2021 (UTC)