Radius 643.6 mm / 25-5/16", also referred to as R-5 Radius.

One piece curve 30°. Use 6 pieces for half a circle, 12 pieces for complete circle.

Single Piece

Parallel curve to Radius R4 with a spacing of 64.3 mm / 2-9/16". 12 sections of track form a circle with an outer diameter of 133 cm / 52-3/8".