Ronstan Series 75 Triple Becket Block w/ CleatUnrivaled 18:1 holding power
Dual sided On-Off switch
Low friction ball bearing system
Cheek cut-outs for easy bearing maintenance
Lockable swiveling head post
High strength forged shackle
Multi-position cleat arm
Sheave Ų - 3 in.
Max. Rope Ų - 1/2 in.
Max. Cable Ų - in
Pin Ų - 9/32 in.
M.W.L. - 1510 lb.
B. L. - 4410 lb.
Weight - 27.9 oz.
The patented extruded hole design, in conjunction with the groove profile of the sheave, provides a more powerful grip than conventional designs - up to 18:1 holding power. Unrivaled low weight is achieved by the use of a Torlon® ratchet pawl, high grade machined alloy sheave and black Acetal hubs and bearings. On-Off switching knob is fitted to both sides of the swivel blocks (one can be removed if desired), and for foot blocks simply turn the sheave upside down before installation to change the sense of rotation. Unique On-Off switch mechanism can be operated under load. Ratchet blocks can be disassembled for servicing or customization.
Removable becket pins allow lines to be pliced prior to fitting. Saddle on under side of cleat can be used as a becket take off point for the creation of a powerful 6:1 purchase system. A single block can be attached to the saddle to increase this to 7:1
Mainsheet on powerful dinghies and skiffs Mainsheet systems on sportsboats using RF7 or RF8 mainsheet swivel units
Triple ratchet blocks are ideal for off-the-beach and formula catamarans, fiddle versions are used on sportsboat mainsheet systems
Vang, furler and other control line applications on larger boats
Carbon black Acetal ball bearings
Alloy sheave and cheek plates
Torlon® ratchet pawl
Grade 316 stainless steel forged shackle