HO Scale Straight 19 1/4" wide 20" deep 2 3/4" High Straight Double deep 19 1/4" wide 28" deep 2 3/4" High Track for both Straights are the same and you will need 4 pcs Kato #2-150 (246 mm, 9 3/4") Corner 28" wide 28" Deep 2 3/4" High Track for HO corner Inside 4 ea Kato #2-210 (550 mm 21 6/8" R) Outside 4 ea Kato 2-220 (610mm 24" R) http://www.t-trak.org/holayout.html <6FC37151-B51F-4F9E-8D1C-1376A86A56A3.gif> HO outside track must be 3 1/4" from edge HO Inside track must be 5 5/8" from edge Track must overhang by 1/32" To build HO boxes you will need 4 ea 1-1/2" sq X 2" L Blocks with a 5/16" hole drilled in the center lengthwise all the way through 4 sides for HO scale straight 2 at 19 1/2" by 2-1/2" and 2 at 19 1/4" by 2 1/2" (note for double deep change the 19 1/2" to 27 1/2") 4 sides for HO scale corner 2 at 28" by 2 1/2" and 2 at 27 1/2" by 2 1/2" Using 1/4" plywood for the sides and the top 4 ea 1/4" - 20 T nut 4 ea 1/4" -20 X2" Carriage Bolt Also some small blocks of wood for support. 4 blocks for each side or even a long board to go across the full length especially on corners N Scale http://www.t-trak.org/easyintro.html Straight 12 1/8" wide 8 1/4" deep 2 3/4" high Straight Double deep 12 1/8" wide 14 3/8" deep 2 3/4" high Track for Straight 2 Each #20-000 (9 3/4" straight) 2 Each #20-040 (2 7/16" straight) Corner 14 3/8" wide 14 3/8" deep 2 3/4" high Track for Corner inside 2 ea #20-110 (11" r) Outside 2 ea #20-120 (12 3/8" r)
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