sunacres

Since Labor Day the month of September has been jammed with activity as the new school year gets underway. Until last Wednesday, none of that activity involved the model railroad.

The four sections of benchwork and cookie cutter roadbed that students carried up into the attic of the school building at the end of last year finally got carried back down, this time by an almost entirely new group. I’m kicking myself because despite my determination to “take more pictures” that I declared when I started this blog, I completely failed to pull out my camera for this inaugural process. Argh, sorry about that. Dealing with large groups of kids can addle the mind.

students.jpg 

This element of a “new group of students” is one of the most intriguing dimensions of the project for me. My school is “K-8,” but the seventh and eighth grades that I teach have a distinct schedule and location so each year half of my students graduate and go off to various high schools and another new group arrives from the sixth grade on the other side of our campus. These new arrivals had heard rumblings of something going on in the middle school math room, so they are primed.

I started this blog as a vehicle for my own contemplation and reflection on the undertaking of a model railroad in a middle school environment, but up to now I have mostly been describing things that had already occurred, making frequent posts over the summer until I eventually got “up to date.” Now I’m shifting into a mode where I hope to do a bit more in the way of organizing my thoughts and explicitly working through various options for both long term and short term tasks and goals.

One constraint that I’m feeling rather pinched by is the limited amount of available time that the kids have to work on the project at this time of the year. Most of the kids are feeling overwhelmed by the transition from a single classroom and teacher for their entire day to a different room and teacher for each subject, with all of the variations in personality, homework expectations, and classroom routines that go along with that. I’ve also adopted a new math curriculum this year for seventh grade, so I’m not very sure-footed yet when it comes to making effective use of the materials and class time. Fortunately, my eighth grade curriculum is a very traditional, familiar Algebra sequence that I can be more flexible with. A nice match with the fact that my eighth graders are already invested in the project and can dig in readily.

I’m also teaching a one-hour-per-week elective called “Applied Math” for a nice mix of seventh and eighth graders – clearly this will be where things get started while I wait for opportunities to arise in the regular classes. It’s the group that carried the sections down from the attic.

My immediate goal is to get trains running quickly, but remain alert to provide interesting projects for students who might need some creative activities (like landforms, structures, trees, etc.) to engage their interest.

The immediate tasks then are, in approximate sequence:

  1. Install the benchwork sections. They bolt together and clip to small wall blocks to form a rigid structure, but getting the L-girders approximately level by adjusting the t-nut feet before final fastening is a bit of fussy work.
  2. Install risers and fasten cookie cutter roadbed with close-to-perfect grades and vertical curves. The plywood and homosote sandwiches are all cut with approximate track centerlines marked, but vertical locations will be more fussy work. Superelevation, if any, can be shimmed.
  3. Install critical control point turnouts. I’ve got some 25-year-old Walthers/Shinohara code 83 turnouts that I salvaged from an earlier layout. They’re not DCC friendly and some of them were modified quite a bit, so there is some work here. I’m not settled on how much of what’s going on here will be appropriate for involving the students in. Certainly some of it. I scratch-built my first turnout at about their age and will never forget how empowering that was, so I’ll be looking for any student who shows the slightest inclination to take one on. Many options here.
  4. Lay track. I’m interested to see how sensitive students can be to smoothly flowing lines. I need to get some mirrors for sighting at track level.
  5. Install feeders. This will probably be many students’ first experience with soldering. I also find the shaping of the feeder tip to be very satisfying – a tiny length of solid conductor, a 90 degree bend, then a 45 degree bend in the orthogonal plane allows the “tiny length” to nestle into the web of the rail (on the side away from the viewer). Very high craft/tech/function/satisfaction value in this task.
  6. Test and tune trackwork. Good use of students’ outstanding visual acuity, I hope.
  7. Anchor ends and cut section joints in rail. I really dislike sheet metal rail joiners. Am I fantasizing that I can get by without them?
  8. Sculpt roadbed & ballast shoulders and ditches in the homosote. I’m eager to get to this step. Most kids have never really noticed the amount of design work that goes into the interface between a foot or a vehicle and the Earth. Once it has been pointed out, they discover a mathematical beauty in something they’d either never noticed or had taken for granted. Appreciating the mundane has a wonderfully low-stress richness.

What am I forgetting?

Jeff Allen

Jeff Allen

My MRH Blog Index

Reply 0
Logger01

Remember to Breathe

Welcome Back

Pictures: I have found that there are often good photographers (and related physics, engineering and math) lurking in every class.

Ken K

gSkidder.GIF 

Reply 0
Jackh

Thanks

I have no idea what you are missing. It makes a great deal of sense to me. I would look further along in the process and include a bit of road building and the considerations that have to go into structure siting. Why doors are where they are, clearances and ground contours if you have the time for that.

I really wish something like this had been around when I was a kid. I picked up on measuring and geometry fairly easily because I was using them at home every day in my bedroom building a RR.

Jack

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sunacres

in class expertise

Thanks Ken. You are so right! I really need to commission the students to document their own progress (and tell their own story!). School rules prohibit them from carrying their own phone/cameras, but there is no reason I can't hand them mine...

Jeff

Jeff Allen

My MRH Blog Index

Reply 0
sunacres

at home in our bedrooms

Thanks Jack, you are getting at the crux - when we're following our interests the formalities fall into their appropriate positions. Trying to learn about things we have no interest in is brutal, almost cruel, but the opposite is true once our curiosity has been piqued. 

Structure siting is a bit of a concern for me. I blocked out some potential sites to serve the car spots I established on the track plan, with candidate industries for each site, but I want to give the students some opportunities to develop industries that they find interesting. I'm not completely confident that the outcome will be reasonable, even with selective compression, but as you say there is a lot of opportunity to learn about the details of getting goods into and out of rail cars. 

Jeff

Jeff Allen

My MRH Blog Index

Reply 0
Prof_Klyzlr

Rail Joiners

Dear Jeff,

Quote:

- Anchor ends and cut section joints in rail. I really dislike sheet metal rail joiners. Am I fantasizing that I can get by without them?

IMHO, respectfully yes, it (eliminating use of mechanically-aligning "rail joiners") is a dream sequence.

Under these conditions (both human and mechanical) you need guaranteed rail-end<> rail-end alignment in both L<> R and U<> D planes. Joiners aid-if-not-ensure this. 

Failing to install jail-joiners from the outset
(or, if the visual really jars you, try Andy R's "invisible rail aligners" from the Proto87 Store)

is a recipe for pain later on...

Happy Modelling,
Aim to Improve,
Prof Klyzlr

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Dave K skiloff

Scaling

While it is perhaps more basic math than some of the concepts, taking a structure, scaling it down to 1:87 and then attempting selective compression to fit in a reasonable space on the layout is another aspect where the students can perhaps take a real interest.  Even saying, "OK, you've got 5 x 10 inches with one track, come up with a reasonable representation of an industry to work in that space, what commodities/car spots would be used for that industry, etc."  That puts the onus on them to research the industry and make it work.  Gets a bit out of the math realm, but some kids might really dig in there, or be really bored!

Dave
Playing around in HO and N scale since 1976

Reply 0
WP282

Lot's of budding model RR's out there

Jeff;

Great to see another installment. Working with multiple grades, I have discovered a bunch of budding model railroader's in my school. A few knew I had model trains, and when the subject came up, I engaged a group of kids in a conversation about it. Word soon spread, and now quite a few students have come to me to share about their model trains or about a relative who has them. I have encouraged them to have their parents contact me through the school e-mail list if they want to come over to visit the layout. At some point, if you would like to arrange a field trip/visit for your class so they can see "what is possible", contact me off list so we can discuss it. Good luck this year.

Mike

 Modeling the WP Cascade Division, 1965 - 1980

Reply 0
sunacres

Say it ain't so Prof...

First of all, thank you for your unambiguous perspective! If I have the wisdom to heed your advice I'm sure I will save myself considerable time and anguish. 

Quote:

you need guaranteed rail-end<> rail-end alignment in both L<> R and U<> D planes

So, just to be sure, you're saying you've never seen a two-axis set-screw adjustment installation that was worthwhile? Probably not... dang... those Micro Engineering joiners are pretty small I guess...

I've got some of the Proto:87 fittings that I can experiment with for these joints, but something tells me I need to bite the bullet on this one. 

Jeff

Jeff Allen

My MRH Blog Index

Reply 0
sunacres

ratios and proportions

Thanks Dave, 

Perhaps the most significant topic in the seventh grade curriculum involves the use of "scale factors" so I TOTALLY agree that having them measure a building or other object (even a tree) and figure out what a scale factor of 1/87th leads to is right on topic. 

Now, your idea of giving them some latitude to "come up with a reasonable representation" could generate some truly fascinating objects! These kids invented the concept of "give them an inch and they'll take a mile." 

Jeff

Jeff Allen

My MRH Blog Index

Reply 0
sunacres

field trip!

Hi Mike,

It's so true, there are more kids with an interest out there than we realize!

Quote:

A few knew I had model trains

I've had the pleasure of experiencing what a substantial understatement this is! And I am going to take you up on your wonderful offer this year for sure, the work you've done is totally inspiring. Thank you!

Jeff

 

Jeff Allen

My MRH Blog Index

Reply 0
Prof_Klyzlr

Set-screw rail<>rail aligners... (not so much)

Dear Jeff,

Quote:

you're saying you've never seen a two-axis set-screw adjustment installation that was worthwhile? 

Not one with the required precision, cost-effectiveness, that was small-enough to be inconspicuous in N and HO scale deployments...

Willy Occum was onto something...

Happy Modelling,
Aim to Improve,
Prof Klyzlr

Reply 0
Logger01

Track Alignment - Pictures

Do not get too uptight about the rail alignment. We had several Free-Mo layouts at the NMRA Atlanta, Cleveland and many other train show where we managed to get through the shows very reliably with modules clamped together. Most of the modelers used C clamps or ViceGrips for clamping modules with flush end rails together without any rail joiners. If track gets a little askew, loosen clamps, realign and re-clamp. For guidance (OK Homework) I would suggest reviewing M.C. Fujiwara's blog entries Free-moN Staging Yard - 16"x10' and Free-moN: At Home and On The Road. Yes he is working in N scale but the construction and alignment guidance fit any scale.

M. C.'s Free-Mo Yard Modules

The bad thing about having students take pictures is that you will end up in more than you wish. Usually in less than flattering positions. No I will not provide any examples.

Ken K

gSkidder.GIF 

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Prof_Klyzlr

Context, "Aiming to Improve" in a classroom condition...

Dear Ken,

I understood Jeff's question to related to assembling flextrack lengths
(and possibly interspersed with turnouts)

end-to-end,
(possibly where each length is being simultaneously laid by a different student),
not crossing module/section joints. 

(Module<> module alignment, and joining/clamping,
which are 2 seperate issues/disciplines,
as they relate to module<> module rail joint alignment,
is an entirely seperate conversation IMHO).​

Happy Modelling,
Aim to Improve,
Prof Klyzlr​

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