KitHelix™ HO scale, 1 track, 29.0"/2.90%, 3 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ HO scale, 1 track, 29.0"/2.90%, 3 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 5 5 16" per turn and has a maximum rise of 15 7 8". Available exit points in the top loop of this helix are at the following vertical rises: 2 1 8 turns: 11 1 4", 2 1 4 turns: 11 7 8", 2 3 8 turns: 12 1 2", 2 1 2 turns: 13 1 4", 2 5 8 turns: 13 7 8", 2 3 4 turns: 14 1 2", 2 7 8 turns: 15 1 4", 3 turns: 15 7 8" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

1 5/8 turns: 5 1/8"

7 turns: 23 1/8"

This helix rises 3 1/2" per turn and has a maximum rise of 20 7/8"

7 turns: 18 1/2"

1 5/8 turns: 8 5/8"

5 1/2 turns: 17 "

This helix rises 4 7/8" per turn and has a maximum rise of 19 5/8"

8 1/4 turns: 21 1/4"

3 1/2 turns: 14 7/8"

7 3/4 turns: 20 "

6 7/8 turns: 20 3/4"

7 3/4 turns: 25 "