plainsman Posted November 2, 2020 Share Posted November 2, 2020 (edited) A lot of you may be surprised that these shots are all from Nebraska. We take a flight to fly over the legendary Crawford Hill, a long steep grade traversed by by 18,000 ton coal trains. https://en.wikipedia.org/wiki/Crawford_Hill,_Nebraska The flight departs Chadron, Nebraska and heads south. It turns west toward Crawford and then flies over the rail line. That is Lower Horseshoe Curve. The heavy trains average Enjoy Train Simulator fans! Edited November 2, 2020 by plainsman I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
plainsman Posted November 2, 2020 Author Share Posted November 2, 2020 (edited) The envelope of operation in the early 1990s was very narrow. The trains were loaded so that they could not exceed 15 mph. They were constrained by the strength of the couplers, which were right at the limit. That is why they had rear helpers. If the train speed dropped to low (about 9 mp;h), the traction motors would overheat and fail under full power. Burlington Northern rebuilt a number of U30-7 locomotives with stronger traction motors and 3,300 HP primarily for this route. They also added a number of SD60 and SD60M units to their fleet to gain extra force for this grade. Eventually, the trains switched to locomotives with AC traction motors to power these trains. Edited November 2, 2020 by plainsman I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
plainsman Posted November 2, 2020 Author Share Posted November 2, 2020 too mph C30-7 I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
DAVIDSTRAKA Posted November 2, 2020 Share Posted November 2, 2020 Nicely done! Senior Rookie Bragware: FSX Gold - Acceleration | HP Omen Obelisk Desktop | Intel Core i7 3.2 Ghz |16GB | NVIDIA GeForce GTX 1060 | 1TB HD | 256 GB SSD (Gaming Computer) REX Worldwide Airports HD AS16 + ASCA ORBX Global BASE ORBX Freeware Airports ORBX HD Trees [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
NMLW Posted November 3, 2020 Share Posted November 3, 2020 Don't hear much about Nebraska around hear. Very interesting train info and fine set of shots Bob. :cool: :) Larry Link to comment Share on other sites More sharing options...
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