KitHelix™ N scale, 2 track, 17.5"/2.50%, 19.5"/2.24%, 9 turns innerradius13-5

KitHelix™ N scale, 2 track, 17.5"/2.50%, 19.5"/2.24%, 9 turns innerradius13-5This helix rises 2 3 4" per turn and has a maximum rise of 24 3 4". Available exit points in the top loop of this helix are at the following vertical rises: 8 1 8 turns: 22 3 8", 8 1 4 turns: 22 5 8", 8 3 8 turns: 23 ", 8 1 2 turns: 23 3 8", 8 5 8 turns: 23 3 4", 8 3 4 turns: 24 ", 8 7 8 turns: 24 3 8", 9 turns: 24 3 4" Our Design: Our construction system uses alignment jigs (included in your kit), making the build faster, easier and more accurate.

6 7/8 turns: 20 1/8"

3 1/4 turns: 9 "

2 3/4 turns: 7 3/4"

Available exit points in the top loop of this helix are at the following vertical rises: 9 1/8 turns: 23 3/8"

yet lightweight with better flexibility and smooth roadbed throughout your helix

Precision graduated ramp supports for the most accurate first loop

Available exit points in the top loop of this helix are at the following vertical rises: 6 1/8 turns: 15 3/4"

Available exit points in the top loop of this helix are at the following vertical rises: 7 1/8 turns: 18 1/4"

Available exit points in the top loop of this helix are at the following vertical rises: 6 1/8 turns: 20 1/2"

4 5/8 turns: 16 1/2"

4 turns: 14 3/8"

5 1/2 turns: 17 7/8"