PA's trucks use??

Those 3 axle trucks were also used under the Alco RS4/5 and RS12, to name two.

No, not by EMD. Only the EMD two axle GP and SW truck frames & bolsters were remanufactured and reused, from traded in units. Three axle trucks went for scrap. Some railroads requested that the ALCO two axle truck assemblies, including the GE Traction Motors (remanufactured of course), be reused under GP30s and GP35s.

PA trucks and RSD4/5, RS12 trucks were not the same.

Rusty

 Thank you.

 I guess I could get or make new side frames for them if the spacing is right.

PA trucks have a longer wheelbase than the RSD three axle truck, plus the RSD truck is asymetrical, with the center axle being off center to make room for the traction motor.

Rusty

I stand corrected. I thought the PA truck was also an offset truck.

PA trucks are A1A, meaning the center axle is a non powered.

In the RSDs it is a C-C truck setup and all axles are powered.

Enginear Joe, real Alco-GE PA's lasted into the early 1960's, but some roads such as LV, PRR, E-L, and UPRR bumped them to freight for their last few years.  I think Southern's 4 cab units were the first to go.  Southern Pacific and Santa Fe kept theirs running into the late 1960's.

The smooth-riding trucks, which had traction motors only on the outer axles were not designed for freight service, and, while they worked, on locomotives running off their last years, they were not something that would have been desirable on a replacement unit in an age of declining passenger train miles.  Only 2/3 of the weight of the locomotive was on drivers.  No railroad would spend money on new locomotives with those reclaimed trucks.