2022 Ronstan Marine Catalogue - VIEW CATALOGUE




  • Captive
  • Low profile
  • Lightweight alloy car bodies

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Patented system uses low profile cars running on twin races of Torlon® ball bearings. Cars use the existing luff groove of the mast (no track or installation work required). Ball bearings are captive for easy loading and unloading of cars from mast. They can be easily switched between fully battened and “soft luff” mainsails. Minimum distance from mast to mainsail luff enhances mainsail efficiency.

With a complete range of car profiles and feet there is a Ballslide™ solution for most available mast profiles and luff groove shapes on boats up to 18m (60ft). See Range Selection Advice for more information.

Ballslide™ Car Profile Identification Table

Quick-Release batten receptacle cars allow quick and easy removal of the mainsail for changeover, repair or stowage. Stainless steel ball joint links provide movement in all directions and up to 112 degrees either side of centre - also available to suit
A105.0 mm
B30.0 mm
C37.0 mm
D- mm
E51.0 mm
Weight220 g
  • Monohulls to 18m (60ft) or sail area 60 m2 (646 ft2)
  • Multihulls to 13m (43ft) or sail area 48 m2 (517 ft2)
  • Suits narrow (N1-N7) feet.
  • Alloy car bodies
  • Torlon® ball bearings
  • Grade 316 stainless steel ball socket