KitHelix™ N scale, 2 track, 17.5"/2.80%, 19.5"/2.51%, 7 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ N scale, 2 track, 17.5"/2.80%, 19.5"/2.51%, 7 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 3 1 16" per turn and has a maximum rise of 21 1 2". Available exit points in the top loop of this helix are at the following vertical rises: 6 1 8 turns: 18 7 8", 6 1 4 turns: 19 1 4", 6 3 8 turns: 19 5 8", 6 1 2 turns: 20 ", 6 5 8 turns: 20 3 8", 6 3 4 turns: 20 3 4", 6 7 8 turns: 21 1 8", 7 turns: 21 1 2" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

3 3/8 turns: 13 3/8"

This helix rises 3 3/8" per turn and has a maximum rise of 23 1/2"

4 turns: 11 1/8"

4 3/8 turns: 13 1/4"

This helix rises 3 13/16" per turn and has a maximum rise of 7 5/8"

3 7/8 turns: 11 1/8"

5 3/8 turns: 19 1/8"

This helix rises 3 1/16" per turn and has a maximum rise of 24 5/8"

7 1/2 turns: 23 3/4"

5 3/4 turns: 14 3/4"

5 5/8 turns: 17 1/8"

This helix rises 3 5/16" per turn and has a maximum rise of 23 1/8"