KitHelix™ N scale, 2 track, 18.0"/2.80%, 20.0"/2.52%, 6 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ N scale, 2 track, 18.0"/2.80%, 20.0"/2.52%, 6 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 3 3 16" per turn and has a maximum rise of 19". Available exit points in the top loop of this helix are at the following vertical rises: 5 1 8 turns: 16 1 4", 5 1 4 turns: 16 5 8", 5 3 8 turns: 17 ", 5 1 2 turns: 17 3 8", 5 5 8 turns: 17 7 8", 5 3 4 turns: 18 1 4", 5 7 8 turns: 18 5 8", 6 turns: 19 " Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate.

7 turns: 24 7/8"

8 turns: 23 1/4"

Available exit points in the top loop of this helix are at the following vertical rises: 5 1/8 turns: 15 7/8"

4 7/8 turns: 16 1/4"

4 1/2 turns: 12 3/8"

3 7/8 turns: 14 5/8"

¼” birch plywood is super strong yet light-weight for easy transport and storage

Available exit points in the top loop of this helix are at the following vertical rises: 5 1/8 turns: 14 1/4"

Available exit points in the top loop of this helix are at the following vertical rises: 5 1/8 turns: 14 1/2"

3 7/8 turns: 14 1/8"

This helix rises 3 1/8" per turn and has a maximum rise of 21 5/8"

1 3/4 turns: 5 7/8"