KitHelix™ N scale, 1 track, 19.5"/2.20%, 3 turns radius17-0

KitHelix™ N scale, 1 track, 19.5"/2.20%, 3 turns radius17-0This helix rises 2 11 16" per turn and has a maximum rise of 8 1 8". Available exit points in the top loop of this helix are at the following vertical rises: 2 1 8 turns: 5 3 4", 2 1 4 turns: 6 1 8", 2 3 8 turns: 6 3 8", 2 1 2 turns: 6 3 4", 2 5 8 turns: 7 1 8", 2 3 4 turns: 7 3 8", 2 7 8 turns: 7 3 4", 3 turns: 8 1 8" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate.

This helix rises 2 11/16" per turn and has a maximum rise of 21 3/8"

6 3/8 turns: 19 5/8"

This helix rises 2 5/8" per turn and has a maximum rise of 13 1/8"

This helix rises 3 1/8" per turn and has a maximum rise of 9 3/8"

This helix rises 2 5/8" per turn and has a maximum rise of 7 3/4"

7 turns: 20 5/8"

9 turns: 22 7/8"

1 3/8 turns: 4 1/8"

4 3/4 turns: 14 1/2"

which provides a margin of safety over NMRA standards

This helix rises 3 1/16" per turn and has a maximum rise of 9 1/4"

Available exit points in the top loop of this helix are at the following vertical rises: 3 1/8 turns: 9 5/8"