M-10003 to M-10006

UP M- 10003 through M- 10006 were three at the Union Pacific Railroad (UP ) asked in June 1936 in service, streamlined designed two-piece locomotives with diesel-electric drive for the carriage of two twelve- speed rail cars for the transcontinental traffic. M- 10005 and M- 10006 were the top of the fifth and sixth Stromlinienzugs the UP, while M - 10003 was provided as a reserve unit.

Together with the already delivered in May 1936 of the same type M- 10004 - power car should outline their futuristic "Automotive designs " are crucial to the shaping of the American establishment diesel locomotives in the next three decades.

Technical description

In car design of the M- 10005 and M- 10006 newly developed self-supporting car bodies came from Pullman - Standard after the experience with the previous multiple units with rectangular instead of trapezoidal and with a much larger cross-section of a riveted lightweight aluminum for use while the engine heads were made ​​of steel sheets whose vehicle profile unlike the M- 10004 again corresponded to those of the trainset.

The Zugspitze of about 263 m long trains consisted of a machine carriage and a fixed coupled as a "booster " designated second machine carriage, respectively. As with the M- 10004 of the two-part power heads M- 10003, M - 10005 and M- 10006 could could be regarded as an autonomous drive unit not only formally as locomotive, but mediated by its novel design visually the effective advertising image of a powerful modern locomotive. The distinctive elongated stem and the high-lying set-back cab with two broad panoramic windows, should significantly increase the passive safety at the numerous level crossings, where collisions with road vehicles could not be excluded. Only the oversized ventilation grille at the bow of the power heads reminded a little of the previous M -10000, M - 10001 and M- 10002nd

As the M- 10004 possessed M- 10003, M - 10005 and M- 10006 over two equally strong machine equipment, the Electro Motive Company ( EMC ) two 1,200 each hp ( 890 kW) had strong V16 - cylinder Winton 201 -A supplied diesel engines. Brake compressors, main generators, control technology as well as arranged in the eight axes of the four bogies electric traction motors came again from General Electric.

The following, provided with air conditioning and ten chariots were significantly roomier than any previous power line trains and no more than a fully articulated tractor unit firmly connected designed pursuant to its amended profile. The first three cars for luggage, equipment and personnel as the dining car with 40 seats in the middle of the train had classically instead bogies arranged at both ends of the coach. Only the two seating car with 50 seats as well as the four - Pullman sleeping car for a total of 70 travelers were each connected via a Jakobs truck to three cars pairs.

In the rear sleeper also a lounge area with 24 seats, unlike all preceded UP streamlined trains, was arranged for the first time with panoramic windows for a rear 180 - degree views.

Use as a " City of Denver "

In the 17 statute-barred combat history of the machine carriage M- 10003 through M- 10006 and the cars of the fifth and sixth UP Stromlinienzugs exclusively in the schedule between Chicago, Illinois and Denver, Colorado perverted as "City of Denver ".

As a competitor to the " Denver Zephyr" quick- unit trains of the Burlington Route the Union Pacific the "City of Denver " was launched in cooperation with the Chicago & North Western on June 18, 1936 as a fifth stream line train on the 1688 km long route from Chicago to Denver. With 118.9 km / h average speed was the "City of Denver " in 1940 as the world's fastest long-distance train scheduled on a 1,000- mile distance.

In May 1939, subsequently procured sleeper extended Denargo and South Platte, the capacitances of the two trains by 20 additional seats and were classified between the two sleeper pairs of the two trains. In this compilation of the Pullman sleeping cars offer of 12 open and closed sections 8 and 20 compartments ( including 12 "Double ", 1 " Drawing Room", 3 " Compartment" and 4 " roomette " ) existed.

The deducted from the "City of Los Angeles " circulating in April 1939 identical two-piece power head LA -4 A B (ex M- 10004 A B) separated the Union Pacific into two parts and built it into the two Booster CD - 06C and CD - 05C to an increased level from August and September 1939, the redrawn drive units CD -05 A B (ex M- 10005 ) and CD -06 A B (ex M- 10006 ) of the "City of Denver ". By December 1939, from the discarded M- 10001 - powered end of the Booster CD -07 C for the reserve unit CD -07 A B originated in the Union Pacific shops (ex M- 10003 ).

Between January and March 1953, the power heads M- 10003 M- 10006 excreted up as well as the cars of the fifth and sixth UP Stromlinenzugs the service of the "City of Denver " and were not broken down in the same year.