KitHelix™ N scale, 2 track, 19.0"/2.20%, 21.0"/1.99%, 8 turns Helix upgrade spiral direction:Clockwise is upgrade

KitHelix™ N scale, 2 track, 19.0"/2.20%, 21.0"/1.99%, 8 turns Helix upgrade spiral direction:Clockwise is upgradeThis helix rises 2 5 8" per turn and has a maximum rise of 21". Available exit points in the top loop of this helix are at the following vertical rises: 7 1 8 turns: 18 3 4", 7 1 4 turns: 19 ", 7 3 8 turns: 19 3 8", 7 1 2 turns: 19 3 4", 7 5 8 turns: 20 ", 7 3 4 turns: 20 3 8", 7 7 8 turns: 20 5 8", 8 turns: 21 " Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate. Precision

6 3/4 turns: 23 1/8"

8 turns: 22 7/8"

1 7/8 turns: 6 7/8"

Available exit points in the top loop of this helix are at the following vertical rises: 6 1/8 turns: 21 "

6 turns: 22 "

5 3/8 turns: 16 3/8"

1 7/8 turns: 4 3/4"

Available exit points in the top loop of this helix are at the following vertical rises: 7 1/8 turns: 20 3/8"

1 1/2 turns: 6 "

5 1/4 turns: 15 1/2"

1 7/8 turns: 5 "

8 7/8 turns: 22 3/4"