KitHelix™ N scale, 1 track, 14.5"/2.80%, 8 turns Helix upgrade spiral direction:CounterClockwise is upgrade

KitHelix™ N scale, 1 track, 14.5"/2.80%, 8 turns Helix upgrade spiral direction:CounterClockwise is upgradeThis helix rises 2 9 16" per turn and has a maximum rise of 20 3 8". Available exit points in the top loop of this helix are at the following vertical rises: 7 1 8 turns: 18 1 8", 7 1 4 turns: 18 1 2", 7 3 8 turns: 18 7 8", 7 1 2 turns: 19 1 8", 7 5 8 turns: 19 1 2", 7 3 4 turns: 19 3 4", 7 7 8 turns: 20 1 8", 8 turns: 20 3 8" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more

4 1/2 turns: 12 5/8"

6 1/2 turns: 19 "

8 3/8 turns: 21 7/8"

Custom cut spacer blocks based on specific grade of your helix

This helix rises 2 9/16" per turn and has a maximum rise of 10 1/8"

8 1/2 turns: 23 1/8"

5 5/8 turns: 14 3/4"

NMRA standards info

This helix rises 2 9/16" per turn and has a maximum rise of 25 1/2"

3 3/4 turns: 10 5/8"

3 3/4 turns: 9 7/8"

4 3/8 turns: 12 3/8"