KitHelix™ N scale, 2 track, 21.0"/3.00%, 23.0"/2.74%, 5 turns Helix upgrade spiral direction:CounterClockwise is upgrade

KitHelix™ N scale, 2 track, 21.0"/3.00%, 23.0"/2.74%, 5 turns Helix upgrade spiral direction:CounterClockwise is upgradeThis helix rises 3 15 16" per turn and has a maximum rise of 19 3 4". Available exit points in the top loop of this helix are at the following vertical rises: 4 1 8 turns: 16 3 8", 4 1 4 turns: 16 7 8", 4 3 8 turns: 17 3 8", 4 1 2 turns: 17 7 8", 4 5 8 turns: 18 1 4", 4 3 4 turns: 18 3 4", 4 7 8 turns: 19 1 4", 5 turns: 19 3 4" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

5 3/8 turns: 14 1/8"

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

2 7/8 turns: 10 5/8"

8 3/4 turns: 22 1/4"

Available exit points in the top loop of this helix are at the following vertical rises: 6 1/8 turns: 17 3/8"

7 turns: 20 1/2"

8 1/4 turns: 23 3/8"

3 3/4 turns: 13 1/4"

2 3/4 turns: 14 "

6 3/4 turns: 21 "

1 1/4 turns: 6 3/8"

8 5/8 turns: 24 "