KitHelix™ N scale, 2 track, 18.5"/2.80%, 20.5"/2.53%, 4 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ N scale, 2 track, 18.5"/2.80%, 20.5"/2.53%, 4 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 3 1 4" per turn and has a maximum rise of 13". Available exit points in the top loop of this helix are at the following vertical rises: 3 1 8 turns: 10 1 8", 3 1 4 turns: 10 5 8", 3 3 8 turns: 11 ", 3 1 2 turns: 11 3 8", 3 5 8 turns: 11 3 4", 3 3 4 turns: 12 1 4", 3 7 8 turns: 12 5 8", 4 turns: 13 " Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate.

2 1/4 turns: 6 1/2"

6 top panels that secure together to create the sub-roadbed

5 3/8 turns: 15 7/8"

Available exit points in the top loop of this helix are at the following vertical rises: 2 1/8 turns: 7 "

5 1/2 turns: 15 3/4"

5 3/8 turns: 17 3/4"

6 1/2 turns: 21 3/8"

7 3/4 turns: 20 3/4"

This helix rises 2 9/16" per turn and has a maximum rise of 25 1/2"

Available exit points in the top loop of this helix are at the following vertical rises: 4 1/8 turns: 13 1/2"

8 3/8 turns: 23 3/4"

This helix rises 3 3/16" per turn and has a maximum rise of 22 3/8"