Edit post

Edit your reply below.

Post Body
Enter your post below.
[quote user="GP40-2"]I wouldn't consider the Big Boy scaled up at all. It was only 6 feet longer than the EM1[/quote] Surprisingly, those "smallest" Yellowstone's were even were longer than the " big"M3/M4... For John,here is the quote from Kratville (Ogden/Riverdale to Wasatch, distance 62miles, elevation 4355ft - 6799ft): Engine:4014 : 3479tons av. speed 20.2 - av. draw-bar pull 64400lbf - av. DBHP 3415 (peak 5530 Devil's slide)4016 : 3883tons - av. speed 19.5 - av. draw-bar pull 71000 -av. DBHP 3585 (peak 6290 M-P 958) 4004 : 3539tons -a v. speed 21.2 - av. draw-bar pull 64800 - av. DBHP 3570 (peak 5990 Peterson)The runs were performed with different throttle + Reverse Lever positions ,also varying traffic occur. That is realistic ---imo, of how much work is done,  pulling such trains continuously uphill (except one mile, that is level ;-)  Hard working, they produced more than 4000DBHP at 14mph, with a load of 3883tons on 1.14% grade, so lets say 15mph speed minimum they were attempting in general on long grades. And there were certainly occasions, they lugged lower than this......John your figures seems to come from the "Challenger"-book... -lars
Tags (Optional)
Tags are keywords that get attached to your post. They are used to categorize your submission and make it easier to search for. To add tags to your post type a tag into the box below and click the "Add Tag" button.
Add Tag