Custom KitHelix™ HO scale, 1 track, 16.75"/4.10%, 2 turns Helix upgrade spiral direction:CounterClockwise is upgrade

Custom KitHelix™ HO scale, 1 track, 16.75"/4.10%, 2 turns Helix upgrade spiral direction:CounterClockwise is upgradePlease note: This helix has a grade greater than 3. 0%. Precision Model Railroad recommends a grade of 3. 0% or less for optimal performance. Each full turn of this helix has a vertical rise of 4. 4 inches. Rise elevations at various exit points: 1 full turn = 4. 4", 1 1 4 turns = 5. 5", 1 1 2 turns = 6. 6", 1 3 4 turns = 7. 7", and 2 full turns = 8. 8". Our Design: Our construction system uses alignment jigs (included in your kit), making the build

6 3/8 turns: 16 1/2"

This helix rises 3 1/16" per turn and has a maximum rise of 21 5/8"

This helix rises 2 15/16" per turn and has a maximum rise of 17 5/8"

6 7/8 turns: 21 3/8"

4 1/4 turns: 11 5/8"

Each full turn of this helix has a vertical rise of 4

Available exit points in the top loop of this helix are at the following vertical rises: 6 1/8 turns: 16 7/8"

4 1/2 turns: 14 "

Available exit points in the top loop of this helix are at the following vertical rises: 3 1/8 turns: 10 "

7 5/8 turns: 24 1/8"

4 5/8 turns: 13 1/4"

1 5/8 turns: 7 1/2"