According to the EMD spec sheet, the GP20D uses a GM16V170B20-T2 4-Stroke Diesel. That’s not a Cat motor I don’t think unless GM just created a partnumber for it.
Having perused Greg McDonnell’s “Field Guide to Diesel Locomotives” many times, that’s just about what happened. It’s a Cat engine with a GM part number.
That would explain why it doesn’t follow EMD naming convention.
I like the Alco switchers, especially after the HH series. It is a shame that Alco was not able to stay in the market. I was able to take rides in cabs of several rs-11 s and They could sure pull a load. I have also been able to get some hands on experience on MRS 1’s at a museum, and have also been able to work on them. The T6 is my all time favorite. I would like to have one. @ meanalcoman
I think just the opposite. What ever happened to the RS Class. ( I know the answer.)
The various gen-set switchers and the various MK/MPI switchers share a similar carbody style which is reported to have good visibility. I will concede that the short nose takes a bit of getting used to compared to older endcab switchers but I haven’t found them to be ugly.
Chef:
Thanks for the video link…
http://www.locophotos.com/PhotoDetails.php?PhotoID=91431
An old switcher… SW1500
Don’t call it an old switcher, I can remember when IHB got brand-new SW1500’s in 1967 or 1968. An NW2 is an old switcher. http://www.rrpicturearchives.net/showPicture.aspx?id=667726
](http://www.rrpicturearchives.net/showPicture.aspx?id=667726)
what year did they came out?
Do you always talk to yourself? [8D]
NW2’s were built from 1939 to 1949 with a gap during WW2 because of War Production Board restrictions.
NO Class!!![X-)]
I think the SW1500 has more h.p. than your NW2…[zzz]
Isn’t that like saying that a Boeing 737-600 has more performance than a Douglas DC-3?
Have any gensets or hybrid switchers been built entirely from scratch with a new frame? The ones I keep hearing about use frames from pre-existing EMD and GE locos, which I guess lowers cost since they’re plenty of diesel switchers out there.
Almost all of NRE’s gensets have been built on new frames. AFAIK, only UPY 2005, the two gensets for Fort Worth & Western and the two 3GS21C’s (NS 3850 & PHL 80) have been built on secondhand frames. All of Railpower’s gensets and hybrids are on used frames.
Seriously, what is the HP on the switcher?
http://www.locophotos.com/PhotoDetails.php?PhotoID=91731
They are still using the frame from SW1500 as standard for the Genset and hybrids. They are most reliable and efficient to repair.