8500HPGASTURBINE wrote: I am looking for someone who asked this question before. I'll post it when I can find it. DON'T worry about the erriers. I type fast so I kould care less about the typeoi's. I rather answer your question then complain about your spellying. JEEZ.
I am looking for someone who asked this question before. I'll post it when I can find it. DON'T worry about the erriers. I type fast so I kould care less about the typeoi's. I rather answer your question then complain about your spellying. JEEZ.
We're not even touching his spelling. He's been through all this before and he would catch half his mistakes if he'd just proofread before posting. He put some effort into it a few weeks ago and made progress and this post is going the wrong way. As far as messing about with my tunnel portals, I'm more concerned with which dirty colors to make them. Using them as supports for an overpass sounds reasonable. What is going OVER the railroad? If the answer is another active track, then he needs to support his roadbed being carefull to hide the base from view with the tunnel portal's top. If he's putting an inactive line or roadway over them, then he might use the portals themselves for support as the weight involved is far less than with a BNSF locomotive rumbling over them.
Been Nothing Since Frisco wrote:ok, that answers part of the quesdtion, how can I modsify it to do that?
How are you elevating your upper track? Is it on a solid surface like WS risers, or is it on an open surface like one of the over and under trestles? If it's a solid surface, you'll need at least a 4" clearance between the upper and lower tracks, and then carve out the section of the risers where the lower track is going to duck under. Then after you've scenicked that section of the duck-under, attach the tunnel face to it. It's really pretty simple.
If you're using a trestle-system for your over and under, then you don't need a tunnel face to begin with, just make sure your lower track is going under the highest elevation of the trestle.
Tom
Tom View my layout photos! http://s299.photobucket.com/albums/mm310/TWhite-014/Rio%20Grande%20Yuba%20River%20Sub One can NEVER have too many Articulateds!
reeding yur posts is hard on my eeyes.
If you mean using the tunnel as an overpass for one track and a tunnel for the lower track--absolutely. There are quite a few instances of that being done on the prototype--one of the most famous examples is the Tehachapi Loop in California, where the track makes a wide loop over itself to gain elevation through the Tehachapi mountains.