KitHelix™ N scale, 2 track, 19.5"/2.90%, 21.5"/2.63%, 5 turns Helix upgrade spiral direction:CounterClockwise is upgrade

KitHelix™ N scale, 2 track, 19.5"/2.90%, 21.5"/2.63%, 5 turns Helix upgrade spiral direction:CounterClockwise is upgradeThis helix rises 3 9 16" per turn and has a maximum rise of 17 3 4". Available exit points in the top loop of this helix are at the following vertical rises: 4 1 8 turns: 14 5 8", 4 1 4 turns: 15 1 8", 4 3 8 turns: 15 1 2", 4 1 2 turns: 16 ", 4 5 8 turns: 16 3 8", 4 3 4 turns: 16 7 8", 4 7 8 turns: 17 3 8", 5 turns: 17 3 4" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

2 3/4 turns: 9 1/8"

5 1/2 turns: 14 "

4 5/8 turns: 12 7/8"

This helix rises 2 3/4" per turn and has a maximum rise of 24 5/8"

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

This helix rises 2 5/8" per turn and has a maximum rise of 20 7/8"

5 3/8 turns: 13 7/8"

5 3/4 turns: 17 1/4"

7 1/2 turns: 22 3/8"

Assembled oval dimension:  41" x 29"

4 3/8 turns: 13 3/8"

6 5/8 turns: 20 1/4"