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 acetal 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 12m (40ft). See Range Selection Advice for more information.

Ballslide™ Car Profile Identification Table

A68.0 mm
B33.0 mm
C- mm
D- mm
E- mm
Weight11 g
  • Monohulls to 12m (40ft) or sail area 38 m2 (409 ft2)
  • Multihulls to 9m (30ft) or sail area 30 m2 (323 ft2)
  • Alloy car bodies
  • Carbon black acetal ball bearings