KitHelix™ N scale, 2 track, 16.0"/2.70%, 18.0"/2.40%, 8 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ N scale, 2 track, 16.0"/2.70%, 18.0"/2.40%, 8 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 2 11 16" per turn and has a maximum rise of 21 3 4". Available exit points in the top loop of this helix are at the following vertical rises: 7 1 8 turns: 19 3 8", 7 1 4 turns: 19 5 8", 7 3 8 turns: 20 ", 7 1 2 turns: 20 3 8", 7 5 8 turns: 20 3 4", 7 3 4 turns: 21 ", 7 7 8 turns: 21 3 8", 8 turns: 21 3 4" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate.

This helix rises 2 5/8" per turn and has a maximum rise of 18 3/8"

4 7/8 turns: 12 7/8"

7 1/4 turns: 20 3/8"

This helix rises 2 5/8" per turn and has a maximum rise of 13 1/8"

Included in this kit:

3 7/8 turns: 11 1/8"

Available exit points in the top loop of this helix are at the following vertical rises: 1 1/8 turns: 3 1/2"

5 1/2 turns: 18 "

6 3/4 turns: 19 5/8"

3 1/4 turns: 10 1/4"

3 7/8 turns: 14 3/8"

5 3/8 turns: 20 5/8"