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Re: PC: SD-35 modeling

The raised section on the roof just at the rear of the cab is a "dust
evacuator" for the central air intake, located just below, the former
contains an inertial air filter and supplies the fresh air for all the
internal mechanisms requiring fresh air (Traction motor blowers, Main
generator cooling,  etal. It is not present on the GP and SD 35. It was
introduces in 1966 with the 645 engine series. It can be found on all 645 and
710 engine series, locomotives. The frme is shorter on the SD35 and has no
anti-climbers at the frame ends. The trucks are the three motor "flexiciol
truck. All axels are equally spaced. the SD40, unless built in from traded in
components has the three motor HTC or the updated flexicoil truck with
dampering strut on the center axle and only two instead of three brake
cylinders, one above each outboard axle. SD35 is 2500hp from the 16 cylinder
567D3A engine beginning production in june 1964 and built until Januar6,
1966. They  carried 3000 gallons of fuel. They were Pennsy Only, class EF25A.
They were numbered (Penn Central) 6000-6039. They disappeared relatively
quickly from service as they were rather fuel-inefficient, compared with the
newly introduced 645 series GP and SD 40 "Dash 2's" which boasted an
incredible 50% better fuel consumption.  I remember the SD35's well they were
pretty engines and the famous EMD turbo sound was the BEST from the 35
series!               Ed St.George

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