Thanks for all the help everyone. I ordered 1915 that was 4440 before the steam generator was added. I may order a second but my layout is only so big and the trains so long, so I may rethink that. I only have 13 of the Rapido coaches, how much power do I need anyway? I did get two Rapido FP7s a couple of months back. They sure run nice.
Brent
"All of the world's problems are the result of the difference between how we think and how the world works."
1900 series numbers were assigned for passenger service.
4400 series numbers were assigned for freight service.
Similarly 1400/4000 series were pass/freight series for the "A" units.
Units were sometimes converted and renumbered between series.
The large box on the roof over the first porthole from left in the drawings on each unit is the winterization hatch covering one of the radiator fans. One unit has a taller version that CP seemed to like.
Chris van der Heide
My Algoma Central Railway Modeling Blog
The 1907 is an F9B while the 4440 is an F7B, but any difference will be inside the carbody. What is more significant is that the 1907 is geared for 89mph and would be used almost exclusively in passenger service as a result. The 4440 is geared for 65mph. That gearing is also typical for the GP7 and GP9s (MLWs were slightly higher) and gave better tractive effort when hauling freight, while also suitable for most passenger services. In fact for a time 4440 was regeared into the 19xx series and had a steam generator, before reverting to its original number. Obviously the model version depicts after it lost the steam generator in the early 1960s; it likely retained a through steam line for occasional passenger use.
Many of CPR's roadswitchers also had through steam lines (and some also had steam generators).
BATMANI am sure Ed is preparing his report as I type.
You guys sure put a lot of faith in my humble offerings
I recall some discussion about the added end vents (apparently for intake air for the steam generator) and I'll look for that discussion when I get the right combination of Google key-words.
Rapido has a pretty decent data page on some of the details:
https://rapidotrains.com/master-class/ho-scale-f7b-f9b-master-class
The SG stack is normally an 8" diameter flue where as the combustion air intake is a domed, screened affair about 16" diameter. It may have been due to colder climate OR stricter environmental rules, I believe the latter, that the combustion air and exhaust were modified in later years toward the inception of VIA.
I believe the little funnel-like device is where the engine coolant fill is located*. C-P may have tried some variant of the water fill/vent. Again they may have been battling freezing problems hence the modifications.
*On further study, it would actually be at the rear of the fans. Rapido calls it the C-P triangle thingy! One document I read said it was a fuel tank vent. Can't confirm or deny that. Some EMDs did have various fuel tank vents (SD-7 and 9s were obvious).
I'll chime in as time permits
Cheers, Ed
Thanks Wayne, that is a big help. I am sure Ed is preparing his report as I type.
The stuff on the roof, above the number 1907 is pretty-well all related to the steam generator - not positive, but there's an exhaust, a blow-off for excess pressure, and who-knows-what-else.
The box on the roof, over the left porthole on the 1907 is likely a winterisation hatch, and the sticking-up-thingy in front of it and also the one two fans forward are the exhaust stacks for the locomotive's diesel engine.
The doo-hickey between the two other fans is unknown to me.
On the 4440, there is no steam generator stuff at all - it's likely a freight unit, but could possibly be used in passenger service but cannot itself provide steam for heating. Some such units may have had steam lines, though, allowing them to be placed anywhere within a consist of locos, some of which had steam generators.
The 4440 also has exhaust stacks identical to those on the 1907, and the little tiny thinga-ma-jigs sticking up are lift rings - used in the shop or roundhouse when internal equipment needs to be removed from the locomotive for servicing - an overhead crane, with hook-equipped chains or cables uses them to remove the roof panel, and there will also be suitable attachment points, for the hooks, on the equipment that's being removed.
If Ed hasn't yet chimed-in as I typed, I'm sure that he'll soon provide better answers.
Edit: Here's a LINK to some lift rings, and the removal of a roof hatch can be seen HERE
Wayne
I'd bet Ed has a schematic for these and most of you will not have to look at it to answer my questions anyway, but here goes.
I am going to order one or two of these as they are due in August and my PWRS account just got a topping up for Fathers Day. I still don't understand why people that aren't my children and those older than me feel the need to buy me things for Fathers Day, but I'll take it.
Looking at the top two Maroon versions #1907 and #4440 can you explain the differences in the roof features?
At the far left of #1907 I am thinking that chimney is for the steam generator???
Next, over the far left port hole is a bigger box that I am guessing is an air intake and the larger one on #4440 is the winterization hatch???
Just to the right of centre of #4440 is a funnel shaped doo-dad, what is that???
There is also a lot of little tiny thingy-ma-jigs sticking up, please feel free to explain those as well.
Of course once Ed post his schematic, my questions will be answered as I have learned to read since my last visit.
Thankyou for any answer you may be able to provide.