3.5 LEVEL HELIX for Kato Unitrack (R490 mm / R550 mm)

PROSES Helix for Kato Unitrack (490 mm / 550 mm, 3.5 Levels)

Optimize your layout with the PROSES Modular Helix V3, designed specifically for Kato Unitrack and compatible with track radii of 490 mm and 550 mm. This double-track, 3.5-level helix provides substantial elevation gain while maintaining exceptionally gentle gradients for smooth and reliable train operation.

Key Features

• Modular Design: 3.5 loops (levels) with quick and easy assembly
• Perfect for Kato Unitrack: Designed for Kato Unitrack double-track configurations using 490 mm and 550 mm radii
• Double-Track Layout: Ideal for continuous up and down traffic and realistic railway operation
• Low Gradient Design: Large radii provide very gentle inclines for dependable operation of long trains

Dimensions & Technical Details

• Track Radius:
– Inner: 490 mm (19 1/4")
– Outer: 550 mm (21 5/8")
• Track Bed Width: 15 cm (5 7/8")
• Number of Levels: 3.5
• Vertical Clearance Between Levels: 10 cm (4")
• Total Height: 40 cm (16")
• Overall Width: 120 cm (47")

Gradient

• Inner Track Gradient: 1.30%
• Outer Track Gradient: 1.16%

These exceptionally gentle gradients allow smooth and dependable operation, even for long passenger trains and heavy freight consists.

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 both permanent layouts and modular exhibition layouts.

Compatibility

Designed for Kato Unitrack double-track systems using Kato 2-270 and 2-210 curved tracks, providing a large-diameter helix with smooth transitions and excellent operational reliability.

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🚂 PROSES Modular Helix V3 – Easy • Quick Build • Light • Durable