| Home | Open Account | Help | 268 users online |
|
Member Login
Discussion
Media SharingHostingLibrarySite Info |
Steam & Excursion > Union Pacific Steam Day 2Date: 11/12/12 18:39 Union Pacific Steam Day 2 Author: starsandbars Train 39 UP816
Train 23 UP804 Train 19 UP814 Edited 1 time(s). Last edit at 11/12/12 18:40 by starsandbars.    Date: 11/12/12 18:41 Re: Union Pacific Steam Day 2 Author: starsandbars UP 3504
UP 4013 UP 4024    Date: 11/12/12 18:42 Re: Union Pacific Steam Day 2 Author: starsandbars UP 9006
 Date: 11/13/12 07:16 Re: Union Pacific Steam Day 2 Author: Bob3985 Great photos. When I asked an engineer I worked with about the 9000's, he said on our district (Cheyenne-North Platte) they were the best. You could climb the east side of Archer hill and be down to like 3 mph with 125 empty reefers and never slip or stall.
Bob Krieger Cheyenne, WY Date: 11/13/12 12:17 Re: Union Pacific Steam Day 2 Author: 4-12-2 Thanks again for all the photos!
Bob, you're correct. Alco, in the period during which they were actively marketing 3-cylinder power, made much hay about the "more even turning moment" as I recall the term. Three crank pins located 120 degrees apart rather than two at 90 degrees. More even distribution of power impulses. John Bush Omaha Date: 11/13/12 16:11 Re: Union Pacific Steam Day 2 Author: rehunn And enough metal on the rail to take advantage of all that weight. To which
the diesel guys say, "But they'll only run 45 mph", to which we reply, "Hey, checked UP's average train speed lately?". Date: 11/13/12 18:19 Re: Union Pacific Steam Day 2 Author: Hillcrest I was gonna ask, but did some research instead into their speed range and see that Alco rated them at 50mph...that seems like it must've been a boatload of reciprocating weight at those RPM's, eh? Would have been fun to watch...
Cheers, Dave |