Still very busy w/baseball (little league) this spring, but I found enough time to finish the framing for the Telluride peninsula. It was kinda tricky figuring the final dimensions as that benchwork sneaks between the Dolores and Ophir areas, especially as it moves into the aisle toward Wildcat Canyon. But it's done now, and aisle widths were kept between 27" and 30" in the area, which is workable.
A long-standing concern of mine has been how to ensure that section is rigid, as it's really narrow and can't be attached to the ceiling. I ended up using some bits of AC2-treated 2x4s screwed into the floor (with Tapcon anchors), then attaching the 2x2 legs to those. At first I used scrap plywood bits to add diagonal bracing to the legs at pretty steep angles (maybe 60-70 degrees). That helps stablize the side-to-side swaying, but on the last few legs (some only 16" wide or so), I used a lot more diagonal braces, and kept the angles to 45 degrees. Wow - what a difference! Rock solid, if you can believe it. I'm removing the other bracing now and replacing it w/45 deg braces, adding 2 or 3 levels depending on the leg pairs. And yes, I'll post pictures of all this someday.
May 15, 2006
Tracks on the wall, and under the stairs
Finally got back to the layout, and have made great progress getting the final link between Ridgway and Durango built. This is a double-level shelf running along the wall and thru the basement stairs, and because it's one of most difficult piece of benchwork, I've left until nearly the end.
Here's the Ridgway yard area; the underside of the stairs is to the right. That board-thingie sitting on the yard is the upper-level main that installs inside the bathroom - through the closet and bathroom and into the laundry area. It's one long piece, and the fewer joints the fewer problems w/ trackwork, I reckon.
Here's the two levels of mainline approaching the stairs from the other side. It's a very narrow stack of two shelves, the lower one 4" wide, the upper 4.75", and part of the trickiness was figuring out how to support it. After building a mock-up, I finally settled on a 1x2s screwed into the wall, with more 1x2s on the outer edge under each shelf, which is 1/2" 4-ply plywood. This forms a bridge, basically.
There's a little 7" lip in the wall (where it changes from drywall on concrete to a normal stud wall), and I was able to have a 1x2 stick out from this lip to form a brace perpendicular to the shelf. I think a single angled bracket under another part will complete the supports for this.
Part of the mock-up was figuring out how high I needed my guardrails to be; the track is right against the edge of this little shelf, along a major aisle into the layout, and I've got to protect against trains falling off. I found that a wall only 3/4" high (measured from the plywood base) will work, even with the track elevated on cork roadbed. This wall is low enough to reach over easily for track cleaning, but high enough to keep equipment off the floor, or so I think.
After briefly losing a test car INSIDE the stairs (the back is closed & drywalled), I put this guardrail on the portion that's actually inside the stairs as well.
Once this is finished up, it's on to Telluride. The benchwork there is completed up to Keystone Hill to the edge of town, but I haven't built further because I need the floorspace for cutting large plywood sections. Now that most of those are complete, I can more the tools and finish up Telluride. And then, finally, on to track laying.
Track laying has been delayed, because (1) I didn't want delicate track in an area of such heavy construction, and (2) because I couldn't afford the track yet anyway. I think both of those issues are ending, enough to begin trackwork anyway.
Here's the Ridgway yard area; the underside of the stairs is to the right. That board-thingie sitting on the yard is the upper-level main that installs inside the bathroom - through the closet and bathroom and into the laundry area. It's one long piece, and the fewer joints the fewer problems w/ trackwork, I reckon.
Here's the two levels of mainline approaching the stairs from the other side. It's a very narrow stack of two shelves, the lower one 4" wide, the upper 4.75", and part of the trickiness was figuring out how to support it. After building a mock-up, I finally settled on a 1x2s screwed into the wall, with more 1x2s on the outer edge under each shelf, which is 1/2" 4-ply plywood. This forms a bridge, basically.There's a little 7" lip in the wall (where it changes from drywall on concrete to a normal stud wall), and I was able to have a 1x2 stick out from this lip to form a brace perpendicular to the shelf. I think a single angled bracket under another part will complete the supports for this.
Part of the mock-up was figuring out how high I needed my guardrails to be; the track is right against the edge of this little shelf, along a major aisle into the layout, and I've got to protect against trains falling off. I found that a wall only 3/4" high (measured from the plywood base) will work, even with the track elevated on cork roadbed. This wall is low enough to reach over easily for track cleaning, but high enough to keep equipment off the floor, or so I think.After briefly losing a test car INSIDE the stairs (the back is closed & drywalled), I put this guardrail on the portion that's actually inside the stairs as well.
Once this is finished up, it's on to Telluride. The benchwork there is completed up to Keystone Hill to the edge of town, but I haven't built further because I need the floorspace for cutting large plywood sections. Now that most of those are complete, I can more the tools and finish up Telluride. And then, finally, on to track laying.
Track laying has been delayed, because (1) I didn't want delicate track in an area of such heavy construction, and (2) because I couldn't afford the track yet anyway. I think both of those issues are ending, enough to begin trackwork anyway.
Apr 24, 2006
Feb 13, 2006
Ophir is coming along. The loop and road thru town are complete (in plywood only), and bridges on the line are complete from 44-A near Vance Jct all the way thru 46-D on the high line. Of course, I'm having to compress the lengths of the bridges, as I've only got about 29' to work with. I'm also trying to keep some kind of relative separation between the the bridges - ie 46-B and 46-C are right next to each other, 46-A is a little before them, and 46-D is a bit further away in the other direction.
But all this fiddling means the compression is all over the board - 45-B is about 62% of it's prototype length, while 46-D is only 37%. And the entire high line is pretty straight - there just isn't room for any twists or curves. I did manage to curve the lower line a bit. So - it's not an exact model, but I knew that starting out. At least there'll be lots of trestles to build and (eventually) look at. Maybe I can mass-produce these critters when I get to that point - I'm up to 11 already!
But all this fiddling means the compression is all over the board - 45-B is about 62% of it's prototype length, while 46-D is only 37%. And the entire high line is pretty straight - there just isn't room for any twists or curves. I did manage to curve the lower line a bit. So - it's not an exact model, but I knew that starting out. At least there'll be lots of trestles to build and (eventually) look at. Maybe I can mass-produce these critters when I get to that point - I'm up to 11 already!
Feb 6, 2006
The climb to Ophir
Well, last weekend saw more work on the Ophir loop area. The track is so high here, I feel like I'm working on an 'airline route'! The big bridge 45-A has it's form roughed in, and I'm working around the depot area now, toward the back of the loop. In this area, there are 3 levels of track - the hidden return loop, the hidden Durango staging, then the Ophir area. I hadn't planned on going over the staging, but the grades worked out and pushing that loop back to the wall gave me a little more room for 45-A.
Here's a shot of trestle 45-A's opening, showing most of the loop area and the hidden return track under the loop. The grade up from the Ophir lowline lessens to 1% over 45-A, then flattens to zero thru the depot grounds, then back to 2% entering 45-B. It'll be flat again on the passing siding (just to make switching easier), but by having some grade in the loop itself, I think I can get a little grade separation between the siding and 45-A below it.
Here's another shot, showing the area where the siding at the Ophir depot will begin, and the opening in the rear for trestle 45-B.
Here's the grade coming up from Vance Jct. I roughed in the location for trestle 44-A at the beginning (not really visible in this shot). The Ophir low line, on my layout, is a constant 2.5% grade, and as curvy as I could make it, given the long narrow benchwork in this section.
The grades came out so high that the high line bridges will be nearly level I think - I'm already nearly at the Lizard Head elevation and pushing eye-level for viewing. I would've liked a little more vertical distance between the lower and upper lines, but I think this'll work ok. I had to maintain the steep grade on the lower line, just because Ophir depot had to be high enough to clear the Durango staging tracks.
Here's a shot of trestle 45-A's opening, showing most of the loop area and the hidden return track under the loop. The grade up from the Ophir lowline lessens to 1% over 45-A, then flattens to zero thru the depot grounds, then back to 2% entering 45-B. It'll be flat again on the passing siding (just to make switching easier), but by having some grade in the loop itself, I think I can get a little grade separation between the siding and 45-A below it.
Here's another shot, showing the area where the siding at the Ophir depot will begin, and the opening in the rear for trestle 45-B.
Here's the grade coming up from Vance Jct. I roughed in the location for trestle 44-A at the beginning (not really visible in this shot). The Ophir low line, on my layout, is a constant 2.5% grade, and as curvy as I could make it, given the long narrow benchwork in this section.The grades came out so high that the high line bridges will be nearly level I think - I'm already nearly at the Lizard Head elevation and pushing eye-level for viewing. I would've liked a little more vertical distance between the lower and upper lines, but I think this'll work ok. I had to maintain the steep grade on the lower line, just because Ophir depot had to be high enough to clear the Durango staging tracks.
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