4.5 LEVEL HELIX for Roco Line R4/R5

PROSES Helix for Roco-Line R4 / R5 – 481.2 mm / 542.8 mm, 4.5 Levels

Optimize your layout with the PROSES Modular Helix V3, designed specifically for Roco-Line R4 & R5 curved tracks — R4: 42424 / 42524 and R5: 42425 / 42525 — and fully compatible with any suitable flex track.

This double-track, 4.5-level helix provides a compact, efficient, and reliable solution for gaining elevation while maintaining smooth train operation. With its larger radius, increased height, and gentle gradient, it is ideal for longer trains, smooth climbing, and realistic continuous operation.

Key Features

• Modular Design: 4.5 loops / levels with easy, flexible assembly
• Perfect for Roco-Line: Designed for R4 & R5 curved tracks or compatible flex track
• Double-Track Layout: Ideal for continuous up/down traffic and realistic operations
• Smooth Operation: Gentle gradients for reliable running, even with longer trains
• Flexible Setup: Can be assembled clockwise or anti-clockwise according to your layout design

Dimensions & Technical Details

• Track Radius:
– R4: 481.2 mm / 18.9"
– R5: 542.8 mm / 21.4"

• Segment Width: 15 cm / 5.9"
• Vertical Clearance Between Levels: 10 cm / 3.94"
• Total Height: 50 cm / 19.7"
• Overall Width: 120 cm / 47.2"

Gradient

• Inner Track Gradient: approx. 2.9%
• Outer Track Gradient: approx. 2.9%

The gentle gradient helps ensure reliable operation, making this helix suitable for both passenger and freight trains, including longer 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 a wide range of layout designs — whether permanent or modular.