As you all know, I’ve been trying to create a scale model by building 1 stall from the Altoona specs they sent me and the specs on the site, then copying it and rotating it twice to make a 3-stall version. Unfortunately, that has not worked and I’ve given trying that methodology. Simply dividing the 39” from the 5-stall specs and then multiplying that by 3 to get the rear wall length doesn’t come out, probably because of the angles involved. Anyway, I then used the 55” x 25.76” box from the file he sent me. I added 3 simple rectangles 4.307” x 26” and didn’t worry about the sides. After that, I rotated the rectangles and spread whisker tracks 9° from each other and the result fit in the box. I then drew a polygon inside the box and that is what I’m using for the footprint. I’ll post examples tomorrow and send them to Alton to get confirmation that I’ve got the right idea.
He mentioned the 60” model to accommodate the 30” engine, but the problem with trying the 60” version is that the entire model needs to be moved further into the aisle, not just the center stall, and I don’t think we can afford the real estate on the sides. I’ll go through the same process for it and show the options. I think we’re going to have to live with the large engine staying outside or not being able to go all the way in.
FWIW, the Korber model we’ve been looking at puts the extension on the rear of each stall, but those stalls are 30” deep and the roundhouse needs to be 16” from the 28” turntable making it also 60” before adding the extension. I’ll use the same logic to create the Korber model, mostly to figure out if it can go closer, like Jan’s diagrams suggests.
I also asked him about the a 34” turntable and the 55” model, so I’ll see what he has to say.
