#SD70ACE-T4

[guerrerense]

Demonstration por Robby Gragg Por Flickr: EMFX Tier 4 demo 1606 leads a manifest north through Plainfield, IL.

[ilovefluidcavitation]

from the wikipedia article on the EMD SD70 series:

- The SD70ICC is an SD70M-2 rebuilt with AC traction by Progress Rail. Units are rebuilt from Norfolk Southern & PRLX SD70M-2's. Norfolk Southern is currently the only operator of these units.[60]

- The SD70ACC is the latest rebuild in Norfolk Southern's DC to AC program. It has the new EMD safety cab, similar to the SD70ACe cab, but with the “teardrop windshield”, much like the SD70ACe-T4. The SD70ACC has been rebuilt with AC traction motors, an AAR-style control stand, an electrical cabinet with Mitsubishi electronics, a new main alternator, and additional weight to increase the maximum weight to 432,000 pounds (196.0 t). The SD70ACC is rated at 4,500 horsepower (3,355.649 kilowatts), has a fuel capacity of 4,900 US gallons (19,000 L), and has dynamic braking, cab signals, and LSL (Locomotive Speed Limiter).[citation needed] The first locomotive was released to service in November 2018.[52]

(tl:dr they're both AC traction rebuilds of Norfolk Southern (and others) diesel locomotives)

would you rather be a sd70icc fanboy or a sd70acc famboy (you cannot kil yourself to escape the question)

@ilovefluidcavitation my dear friend what on earth are you trying to say to me in these godforsaken asks

[collinthenychudson]

Working at Notch 8, Union Pacific ES44AC No. 5383 along with SD40N No. 1718 (Formerly SD40-2 No. 3521), an SD70M, and an SD70ACE-T4 lead a heavy northbound manifest consisting mostly of loaded coal hoppers. Although not in this picture, an SD70ACE is acting as a mid-train DPU.

Taken on 4/12/22

Picture C) Me

[abuserfriendly]

There's an SD70ACe-T4 "vacuum cleaner" at the end of this 4-unit lashup lugging an intermodal train North up the BNSF/UP "I-5 Corridor" in Ridgefield, WA, on a very cold December 29, 2021. Pandemic times have been rough for people who like to travel...at least we can always watch trains.

[airmanisr]

EMD LaGrange by Robby Gragg Via Flickr: EMDX SD70ACe-T4 1606 sits at EMD LaGrange in McCook, IL.

[robertpiers]

BNSF Railway C44-9W No. 4163, ES44C4 No. 8270, and EMD SD70ACe-T4 No. 1605 lead a southbound mixed freight in Fort Collins, Colorado, February 14, 2017.

[guerrerense]

Next Stop, Ogden por James Belmont Por Flickr: Ultra mega clean SD70ACe-T4 No. 3079 leads Union Pacific's MNPML 04 through the farming village of Uintah, Utah the afternoon of on Dec. 6, 2022.

[collinthenychudson]

Day 17: EMD SD70ACe

Info from Wikipedia:

The SD70ACe is the successor to the SD70MAC with design changes to comply with emission standards. The engine fires with 15% lower internal pressure to improve emissions and features fewer internal components in the inverter. SD70ACe is equipped with EMD's 16-710-G3C-T2 prime mover, rated at 4,300 horsepower (3,200 kW); later Tier 3 models are rated at 4,500 horsepower (3,400 kW), and have a thermal efficiency of almost 36%. They are rated at 157,000 lbf (700 kN) continuous tractive effort (191,000 lbf (850 kN) starting). Braking effort is rated at 106,000 lbf (470 kN). Early Models featured a bad cab design which was noticed first on CSX as crews reported annoying disturbances such as prime mover noises, traction motors and more. The cab also rattle and many railroads received this defective units like, Union Pacific, CSX, Norfolk Southern, BNSF Railway and Kansas City Southern. These were called "Thundercabs" because of their sound. They are more common on Norfolk Southern and Union Pacific. To tell them apart, Thundercabs have their headlights on top and sideways instead of on the nose. These units are also not approved for leading trains. on BNSF, It is very rare to see these leading. On Union Pacific it is a common occurrence on intermodal trains to Chicago. In 2012, EMD also built four models known as the SD70ACe-P6. These units, unlike previous SD70ACe's, have one inverter per axle on the trucks, rather than EMD's traditional one inverter per truck design. Four of those ( EMDX 1206,1208,1209 and 1210) were sold to Canadian National Railway and renumbered to CN 8100-8103.

In 2014, BNSF Railway took delivery of 20 SD70ACe-P4 units, numbered 8500 - 8519. This model was designed with a B1-1B wheel arrangement to compete with GE's ES44C4 model, which has an A1A-A1A wheel arrangement. Both wheel arrangements mean that there are only two traction motors per truck instead of three, those being the ones next to the fuel tank. Two SD70ACe-P4 demonstrators began a 5-year lease at Tacoma Rail in late 2014. On January 1, 2015, the United States Environmental Protection Agency's Tier 4 locomotive emission regulations went into effect. EMD could not successfully modify the SD70ACe's 2-stroke 710 series prime mover to be Tier 4-compliant; thus, the Tier 3 SD70ACe was succeeded by the SD70ACe-T4 in late 2015. However, US production of the Tier 3-compliant SD70ACe continues with Tier 4 'credit units' (new Tier 3-compliant units EMD is entitled to build based on previously-earned emissions credits). Union Pacific and Norfolk Southern are currently the only US roads to own Tier 4 credit unit SD70ACe's. Additionally, EMD has continued building Tier 3 SD70ACe's for Ferromex (4100-4118), Ferrosur (4119-4133), and Kansas City Southern de Mexico (4200-4224) at Bombardier Ciudad Sahagun. These locomotives are restricted to Mexico-only operation and cannot cross the US border (just as Canadian National's newest Tier 3 GE ES44AC's are restricted to Canadian use only).

In March 2016, EMD replaced the standard cast HTCR-4 trucks on NS SD70ACe 1000 with the new fabricated HTCR-6 trucks for testing. UP and BNSF plan to test the new HTCR-6 trucks on some of their SD70ACe units also. Union Pacific received 281 additional SD70ACe units, numbered 8824 - 9104, in 2014, 2016 and 2018. These are referred to as SD70AH (T4C), H for "heavy", because they are ballasted to 428,000 lb (194,138 kg) rather than 420,000 lb (190,509 kg).

In mid-2021, Yakutian Railways received two SD70ACes, designated 2TE3250 (Russian: 2ТЭ3250) and numbered 0001 and 0002. They are currently in use in Yakutia.

models and route by: Sporbust, JointedRail, Auran, and Download Station

[collinthenychudson]

Powering a northbound manifest, Union Pacific SD70ACe-T4 No. 3056 along with AC44CW No. 6638 speeds past the North Temple FrontRunner station and under the North Temple bridge.

Taken on 2/22/22

Picture C) Me