KitHelix™ N scale, 2 track, 20.0"/2.40%, 22.0"/2.18%, 4 turns outerradius21-5

KitHelix™ N scale, 2 track, 20.0"/2.40%, 22.0"/2.18%, 4 turns outerradius21-5This helix rises 3 " per turn and has a maximum rise of 12 1 8". Available exit points in the top loop of this helix are at the following vertical rises: 3 1 8 turns: 9 3 8", 3 1 4 turns: 9 3 4", 3 3 8 turns: 10 1 8", 3 1 2 turns: 10 1 2", 3 5 8 turns: 10 7 8", 3 3 4 turns: 11 1 4", 3 7 8 turns: 11 5 8", 4 turns: 12 1 8" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate.

9 turns: 24 1/4"

3 7/8 turns: 11 5/8"

6 7/8 turns: 22 3/4"

6 5/8 turns: 19 5/8"

This helix rises 3 11/16" per turn and has a maximum rise of 7 3/8"

No special tools required

7 5/8 turns: 20 "

4 3/8 turns: 18 1/2"

Kit pieces designed to fit only one way reducing the risk of incorrect assembly

Available exit points in the top loop of this helix are at the following vertical rises: 2 1/8 turns: 7 7/8"

6 turns: 17 1/8"

1 7/8 turns: 6 "