KitHelix™ HO scale, 1 track, 29.0"/2.90%, 4 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ HO scale, 1 track, 29.0"/2.90%, 4 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 5 5 16" per turn and has a maximum rise of 21 1 8". Available exit points in the top loop of this helix are at the following vertical rises: 3 1 8 turns: 16 1 2", 3 1 4 turns: 17 1 8", 3 3 8 turns: 17 7 8", 3 1 2 turns: 18 1 2", 3 5 8 turns: 19 1 8", 3 3 4 turns: 19 7 8", 3 7 8 turns: 20 1 2", 4 turns: 21 1 8" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

8 7/8 turns: 23 3/8"

8 5/8 turns: 24 3/4"

Available exit points in the top loop of this helix are at the following vertical rises: 1 1/8 turns: 3 1/4"

4 5/8 turns: 16 "

7 1/4 turns: 18 5/8"

5 7/8 turns: 18 1/2"

6 5/8 turns: 20 3/8"

Available exit points in the top loop of this helix are at the following vertical rises: 5 1/8 turns: 14 1/4"

5 3/8 turns: 20 1/8"

4 3/4 turns: 14 1/2"

7 5/8 turns: 21 1/2"

7 3/4 turns: 21 "