Elevation profiles

Looking at Google Maps API for a different project, came across a demo map that lets you enter a route and then it will plot elevation along that route. The path between the two or more points can be direct (straight line) or along optimal road, bike, or walking paths (not rail). Since rail lines and road lines, especially highways, follow similar routes, this can be a handy thing for estimating the elevation profile (and thus locations of potential helper districts and other slope-based features) along a prototype or freelanced rail route. Here is a screenshot showing the elevation profile from Sacramento, CA, to Reno, NV, which goes through Donner Pass.

Design decisions

Design decisions so far (also see schematic above):

1. Peco Code 55 N scale track, with electrofrogs: reported to operate well (electrofrogs are good for short wheelbase engines), look fairly good, but still be able to run deep flange cars like Microtrains' releases. No minimum turnout size specified yet.
2. 11" minimum radius: allows turnback on the shelf but can run the trains I want (i.e., Kato's N scale RDC is supposed to operate on curves as tight as 9 3/4"). Won't look great, but the only tight curves will be in staging. The visible layout will just have very broad curves (though need to think about curves through turnouts).
3. Train length: maximum train length is set at 37", which is sufficient for a train of ~10 freight cars. Visual tests suggest this looks like a moderate-length train, at least to me. Passenger trains should look much shorter than freight trains, so this means my passenger trains will probably only be two, maybe three, coaches long. It'd be great to run freight trains of 30 cars, but I don't want to devote that much space to staging (storing a train of that length at each end means about 14' of the 19' length would be used for staging, though of course you could stage in other ways) and I want to have trains short enough that they visually go from one "place" on the layout to another "place".
4. Shelf design: metal brackets on tracks mounted to studs supporting a 1x2 frame (with 2x2 pieces running the length of the layout) covered with a layer of 1/4" ply. I will be putting 2" foam on top of this.
5. At each end, an automated sector plate with a turnback curve and storage for three or more trains. One prototype built, still tweaking it.
6. B&M main line going from one end of the layout to the other (basically on diagonal across the 19' x 2' layout footprint). This line has most of the focus and development (yard, industries). The intersecting railroad will run on the opposite diagonal and may be hidden or at least obscured over some of its length. There will be a crossing and interchange track where the lines intersect. These lines will connect to the sector plates at each end.
7. A sneakback track at the back of the modeled layout (hidden with a low hill or other scenery, but accessible). This allows trains to run from one sector plate to the other. For instance, an RDC could run from left to right across the visible layout, enter the turnback loop on the sector plate, run on the sneakback track to the other turnback loop, and repeat the trip. This allows things like a commuter rush in one direction to be modeled with one set of equipment.

Givens and druthers

When designing a model railroad, it is common practice to make a list of givens (fixed parameters, like room size) and druthers (preferences). I believe the terminology comes from famous layout designer John Armstrong; see this LDSIG page has some more information.

Givens:

1. Our "two car garage" has only one door and is pretty narrow. Perhaps precision drivers with Minis could fit two cars in, but I think we're limited to one. That one might be a minivan. The garage must also fit things like a table saw and other tools. The workable layout space is thus along a wall about 19' long (no obstructions like electrical panels, doors, or windows) and 2' wide
2. Limited time: two young kids and a job that can easily expand to fill all available time means I can realistically expect to devote maybe one or two evenings per week to the layout.
3. Limited budget: my job is interesting and pay is reasonable but not extraordinary. I'm also a cheapskate. So, I'm not going to spend thousands of dollars a year on equipment.
4. Primarily lone wolf: I am not expecting others to help contribute construction effort to the layout.
5. N scale (see previous post)

Druthers

1. Boston & Maine, transition era. I can run steam and diesel. On the B&M, this means first few years in 1950s (I'm willing do something like set the time period to "1951-1953" rather than "Oct. 14, 1952" -- I might have a focal year, but I'm not going to go insane trying to figure out exactly which branch a particular locomotive was assigned to at that time).
2. Freight: through freight, some yard switching, some locals, some interchange. I am thinking of having three "zones": a yard with a small engine terminal, a small industrial area, and an interchange (though zones may overlap, of course).
3. Passenger: model the commuter rush (trains running towards Boston in the morning, away in the evening) but no real passenger train switching (if there happens to be room for it, fine, but it's not a design priority). Perhaps a steam engine and some passenger coaches and/or some RDCs.
4. Live crossing and interchange with another railroad. I'd like this to be generic enough that I could credibly run a train of one of several railroads that interacted with the B&M (MEC, NYC, B&A, New Haven, etc., not roads like the Pennsy, Santa Fe, UP, etc.)
5. Fun for one operator: I'll probably mostly be running alone (though I will be exploring the possibility of having my father Skype in to run a computer-based throttle, and my kids might get involved). I am willing to write or use software to simulate some jobs (automatic dispatcher, perhaps a through train being run by the computer) but I don't want to have to wrangle a 15-person operating crew to be able to run my railroad.
6. Ample staging: I want to be able to store several trains. I'm almost thinking of having a British-style layout, where the focus is on one location and trains cycle through there from staging. I'd also like the staging to handle things like running three commuter runs in one direction, then the same number in the other direction, without needing a lot of equipment (ie., I'd rather have loco #610 make three outbound trips in a row rather than have to buy three locos and all the passenger equipment).
7. Get my geek on: my job involves a lot of software development, but I would enjoy doing some of this with the layout, too. For example, I'm already playing with code that allows an Arduino to control a sector plate with a servo (more info in a future post -- see this video for a similar project done by someone else). Doing this sort of thing is fun and allows for many more possibilities in layout design and operation.
8. Possibility of getting the kids involved: both my kids (age 4 and ~2) like trains and train rides, so I'd like to design a layout that is sufficiently kid-friendly that they can run trains without me breathing down their necks: that means something allowing continuous operation and having operating scheme elements (like a car-forwarding system) that can still work, perhaps with minor fixing, after the kids are done running.
9. Animation: helps keep kids interested, is geeky fun, plus something I just like. I don't want cheesy things (think those Lionel cars with the giraffe head popping out of a car) but things that operate realistically. One inspiration comes from a Model Railroader article (mid 1990's, I think) on Kermit Paul's layout, where he had things like cranes that could load logs on logging cars.
10. Winter setting: probably a third of the B&M photos, even more of the most interesting ones, show trains running through snowy landscapes. Except for a few scenes "high in the mountains", or baking soda-covered seasonal dioramas, model railroaders seem to mostly stay away from this. I think I'd like to give it a try. Besides the aesthetic considerations, it also has the possibility of making construction a bit easier: rather than ballast the track and worry about gluing the turnouts, I can cut styrene to fit between the tracks (as people do for depicting street trackage, but painted white). It's definitely an unusual look on models. It might make optosensors harder to conceal, though.

First post

As I was designing and doing initial construction of my model railroad, I decided I needed to store key design parameters I have chosen and other minutiae along the way: which gauge wire am I using, exactly which color for the fascia paint so I order more, etc. I could store this somewhere on my computer, but by putting it on a blog, it's in a more stable location, other people may learn from my mistakes, I can easily store other info like images, and so forth. Thus, this blog. Note that I am writing this mostly selfishly -- I am not trying to build a reader base, nor am I particularly eager to get deeply involved in lots of conversations with readers. I have limited hobby time and would like to put it into the trains. That said, please do feel free to point out problems, make suggestions, or post other comments or questions.

A bit about my railroad and philosophy:
I've always liked the Boston & Maine RR (B&M), a class I railroad based in New England. I grew up in a suburb of Boston and always liked the New England environment: rocky coastlines, forested mountains, small farms, rock walls, covered bridges, etc. I've lived and railfanned other places: along UP's line by Sacramento out to Donner Pass, trains in the Mojave, Alaska Railroad, Norfolk Southern's lines in the Southeast US, but I still like the B&M. Thus, that's my prototype.

As far as scale, my father has always modeled in HO, and I could borrow some equipment from him, but I decided to go with N scale. It is small and so can fit in the spaces I've had available to me. I could go to Z, but that doesn't have the manufacturing support (fewer and more expensive models) and doesn't seem to support switching as readily as N does.

I thought for some time of building an NTrak module, and there are various arguments for and against this, but it basically comes down to the fact I am not particularly a people person, and interacting with others at a train show is not what I want to do in my free time. So, I'm basically building a shelf layout in my garage, instead.