Welcome Andy to Z_Scale
> For starters: what are the average dimensions of tunnel portals in ZI'll let others quote the page and book on tunnel clearances, but I'll pass
along this hint:
Check out the HO Drainage Culverts at your local RR store. Come two to a
They are (1) the correct size for a single track Z scale portal, and (2) they
are a LOT cheaper than one that looks just like it but says Z scale on the
package. Comes in several types.
Glad to have you with us.