Going in circles...
I just wanted to drop in again (one of my sporadic visits) and give an update on the layout. Sorry, there are no new pictures to post...just news...
The big news is that I finally fixed an electrical problem that I was having with the back side of the loop. Everything was working fine until a few weeks ago when, all of a sudden, Block #2 started flaking out. I had finished cleaning part of the track after having removed that extra rock from one of the tunnel entrances when I decided to run an engine around the whole loop. It would get to Block #2 and stop, and the power level indicator on the power pack would go dim. As long as Block #2 was on, the engine would not run (on any block). I fiddled with the track (jiggling it around and trying to make sure that the wires were secure) and it would work for a while, then start flaking out again. It was very frustrating. I took up part of the track on that block today, hoping and praying that the problem wasn't in the tunnel. I think the main problem was that some of the expanding foam had gotten into the join between two sections of track. I cleaned up the ends of a few pieces and put it all back together.
Then I tried running my SW9/1200 around the loop...flaky performance at best... I tried cleaning the track some more. No luck. I was getting very frustrated. I was almost to the point of saying, "That's it. I'm done with N-scale. I'm going to HO." Not that things would necessarily be much better, but I've had far fewer electrical problems with HO stuff... Anyway, then it dawned on me to clean the wheels of the locomotive. I put some track cleaning fluid on a piece of paper towel, laid it over the rails, put one truck at a time onto the paper and cranked up the power supply. I can't tell you how much GUNK was on the wheels of that engine!!!!
Now it runs fine. And the other two engines (whose wheels weren't nearly so dirty) run great, too. I am SO happy to be able to run trains in a circle now!
The branchline is partly disassembled. I've been wracking my brain on how to build the bridges... It has been driving me absolutely crazy. The problem is that the bridges will be in curves. Normally this would not present a problem because trestle bridges can be easily build that way. But in my case (my case seems to never fit into the "norm") I don't have enough room for the piers. The spaces being spanned are fairly narrow, and there are one to two tracks running underneath. Any bridge piers would get in the way of the trains.
I have two solutions to the problem, neither of which I have started. The first is to build a bridge similar to one on Shamus' layout (
click here). BTW, Thanks, Paul!



A bridge like that could be straight, and allow the track to be curved. At least in my non-expert engineering opinion, it looks like it could theoretically hold the weight of an engine. And even if it didn't, this is all make-believe, anyway, so there.
The other idea is to build a stone or brick bridge using some of my leftover blue foam.
Both ideas have appeal to me. But I'm not totally sold on either one.
The track across the first bridge is a single section of 9 3/4" 30 degree track. The other is two of these sections. If anyone has any ideas, please let me know!
-Rory