KitHelix™ N scale, 2 track, 18.0"/2.30%, 20.0"/2.07%, 7 turns Helix upgrade spiral direction:CounterClockwise is upgrade

KitHelix™ N scale, 2 track, 18.0"/2.30%, 20.0"/2.07%, 7 turns Helix upgrade spiral direction:CounterClockwise is upgradeThis helix rises 2 5 8" per turn and has a maximum rise of 18 1 4". Available exit points in the top loop of this helix are at the following vertical rises: 6 1 8 turns: 15 7 8", 6 1 4 turns: 16 1 4", 6 3 8 turns: 16 5 8", 6 1 2 turns: 16 7 8", 6 5 8 turns: 17 1 4", 6 3 4 turns: 17 1 2", 6 7 8 turns: 17 7 8", 7 turns: 18 1 4" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

This helix rises 2 11/16" per turn and has a maximum rise of 18 3/4"

Available exit points in the top loop of this helix are at the following vertical rises: 3 1/8 turns: 8 5/8"

8 turns: 24 5/8"

This helix rises 2 9/16" per turn and has a maximum rise of 20 3/4"

Available exit points in the top loop of this helix are at the following vertical rises: 2 1/8 turns: 6 "

Available exit points in the top loop of this helix are at the following vertical rises: 3 1/8 turns: 10 5/8"

Available exit points in the top loop of this helix are at the following vertical rises: 7 1/8 turns: 20 3/4"

8 turns: 21 "

5 turns: 16 1/2"

4 7/8 turns: 17 3/4"

5 turns: 16 1/4"

4 7/8 turns: 17 5/8"