KitHelix™ N scale, 2 track, 18.0"/2.30%, 20.0"/2.07%, 5 turns Helix upgrade spiral direction:CounterClockwise is upgrade

KitHelix™ N scale, 2 track, 18.0"/2.30%, 20.0"/2.07%, 5 turns Helix upgrade spiral direction:CounterClockwise is upgradeThis helix rises 2 5 8" per turn and has a maximum rise of 13". Available exit points in the top loop of this helix are at the following vertical rises: 4 1 8 turns: 10 3 4", 4 1 4 turns: 11 ", 4 3 8 turns: 11 3 8", 4 1 2 turns: 11 3 4", 4 5 8 turns: 12 ", 4 3 4 turns: 12 3 8", 4 7 8 turns: 12 5 8", 5 turns: 13 " Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate. Precision

5 7/8 turns: 15 3/8"

4 turns: 11 1/8"

Available exit points in the top loop of this helix are at the following vertical rises: 8 1/8 turns: 20 3/4"

4 3/4 turns: 14 "

2 5/8 turns: 7 1/4"

This helix rises 3 7/16" per turn and has a maximum rise of 20 5/8"

Engineered to be strong

4 1/2 turns: 12 7/8"

2 1/4 turns: 6 3/4"

8 1/4 turns: 23 1/4"

2 5/8 turns: 10 1/8"

1 7/8 turns: 5 5/8"