4.5 Level 4 Track Helix for KATO 20-181 & 20-185 (Copy)

PROSES Helix for KATO Unitrack 20-181 & 20-185, 4.5 Levels

Optimize your layout with the PROSES Modular Helix V3, designed specifically for KATO Unitrack 20-181 & 20-185 curved tracks.

This quadruple-track, 4.5-level helix provides a compact, efficient, and reliable solution for gaining elevation while maintaining smooth train operation. With four parallel radii and a practical footprint, it is ideal for larger layouts where multiple tracks need to climb between levels in a controlled and space-saving way.

Key Features

• Modular Design: 3.5 loops / levels with easy, flexible assembly
• Perfect for KATO Unitrack: Designed for KATO 20-181 & 20-185 curved tracks
• Quadruple Track Layout: Four parallel tracks in one helix structure
• Compact Layout Solution: Ideal for gaining height in limited layout space
• Smooth Operation: Gentle gradient for reliable running
• Flexible Setup: Can be assembled clockwise or anti-clockwise according to your layout design

Dimensions & Technical Details

• Track Radii:
– 381 mm / 15"
– 414 mm / 16.3"
– 447 mm / 17.6"
– 480 mm / 18.9"

• Segment Width: 15 cm / 5.9"
• Vertical Clearance Between Levels: 8 cm / 3.15"
• Total Height: 41 cm / 16"
• Overall Width: 103 cm / 41"
• Grade: approx. 2.9%

Gradient

• Average Gradient: approx. 2.9%

The gentle gradient helps ensure reliable operation, making this helix suitable for smooth and steady train movement between levels.

Easy & Flexible Assembly

All PROSES helices can be assembled clockwise or anti-clockwise, allowing:

• Entry or exit from left or right
• Entry or exit from top or bottom

This flexibility makes the helix suitable for a wide range of layout designs — whether permanent or modular.