Thanks. My tunnels are 7" wide and 9.25" tall.

P.S.

Nice tunnel.

I had the same question not long ago and have discovered many things.

1. Bachmann track is not UV protected so it will deteriate over time outside.
2. Bachmann Large scale will run on G-scale 45-mm LGB, Aristocraft and USA track.
3. USA and Aristocraft track are essentually the same. They might even come from the same factory in China.
4. USA Brass track is much cheaper than Aristocraft track for the time being, but that may change soon. Copper prices are through the roof.

I have recently purchased USA track for my layout and am currently doing the layout portion. I will soon be buying an Annie Denver & Rio Grande to run on it.

Does anyone have the specs on the exterior dimensions of the Big Haulers? I plan on getting one in the near future and I wanted to make sure it will fit through one of my tunnels.

I'm planning a tunnel for my railway. I want to make the tunnel big enough for any trains I may buy in the future. What should the inside dimensions of my tunnel be?

I plan on building a box form out of 2"x12" lumber and placing styrofoam in the box to serve as the tunnel. I also plan on cutting out a brick pattern out of some 1/16" thick acrylic sheet using a laser cutter to create a brick pattern on the outside of both ends. I may use chicken wire to add strength to the concrete.

Thanks for the info everyone. Being new it all is a bit confusing, but I believe I have a handle on it. No matter which Big Hauler I get I believe I will eventually go with Barry's upgrade. It's a little expensive, but probably worth it.

I like the looks of the Denver & Rio Grande Annie Loco so I'm thinking about that, however the White Pass set may be worth the upgrade in Loco.

I'm new to garden railroading and I am looking for my first locomotive. I'm considering the Mountaineer set (90048). I am assuming the locomotive in that set is different from the Anniversary Edition 4-6-0 locomotive. What are the differences?

What is the maximum grade I can expect to pull with the Mountaineer starter set if I added a caboose? I'm using Aristocraft track with a 10A 0-20V power supply.

I saw the tractive effort test article at http://www.girr.org/girr/tips/tips4/tractive_effort_tests.html. Is there a newer article out there that compares all the current Bachmann locomotives to each other and other Aristocraft and LGB locomotives? I prefer Bachmann, but I am curious how the different Bachmann's stack up against each other and other manufacturers.

Thanks for any comments.

It's something I already have, but I don't want to do damage.

I have a BK Precision 1665 1-19V 0-10A variable power supply not specifically designed for model trains. Can I use this to power my Bachmann Anniversary Edition 4-6-0 Denver & Rio Grande 81097 on a Aristocraft Brass Track with out damaging it?