Captive ball cars use a combination of captive recirculating ball bearings running on the face of the track for compression loads, and sliderods to provide extra strength for high static loads. All bearings are captive, allowing for easy installation and removal.
Luff groove tracks are compatible with ’soft luff’ and fully battened mainsails, making it easy to change between the two. They may be bonded to carbon masts with special adhesives. Quick release cars make the job easier when the sail needs to be removed for changeover, repair or stowage.