KitHelix™ N scale, 1 track, 15.5"/2.80%, 9 turns Helix upgrade spiral direction:CounterClockwise is upgrade

KitHelix™ N scale, 1 track, 15.5"/2.80%, 9 turns Helix upgrade spiral direction:CounterClockwise is upgradeThis helix rises 2 3 4" per turn and has a maximum rise of 24 1 2". Available exit points in the top loop of this helix are at the following vertical rises: 8 1 8 turns: 22 1 8", 8 1 4 turns: 22 1 2", 8 3 8 turns: 22 7 8", 8 1 2 turns: 23 1 8", 8 5 8 turns: 23 1 2", 8 3 4 turns: 23 7 8", 8 7 8 turns: 24 1 4", 9 turns: 24 1 2" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

the parts simply glue together

5 3/8 turns: 15 3/4"

This helix rises 2 15/16" per turn and has a maximum rise of 5 7/8"

This helix rises 2 3/4" per turn and has a maximum rise of 13 5/8"

This helix rises 2 11/16" per turn and has a maximum rise of 21 5/8"

8 3/8 turns: 21 7/8"

the DoubleHelix™ is fun to build

9 5/8 turns: 25 "

9 turns: 24 5/8"

7 1/2 turns: 19 7/8"

9 3/8 turns: 24 1/4"

This helix rises 2 13/16" per turn and has a maximum rise of 5 5/8"