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block and tackle

Big Pimpin'

30mm dynamic blocks are one of the most versatile products in Allen’s range of hardware. 

The 30mm range has been designed for use with rope that has a maximum line diameter of 8mm. This makes the 30mm Dynamic block range a great choice for many different control line systems across a wide range of boats.

Most recently Allen have started manufacturing the single version onto a stainless-steel ring for sportsboat backstay systems. 

The configuration of two or three single blocks assembled around a ring gives a refined and streamlined product with maximum strength. The ring also allows the blocks to move freely and as such they can each align to the correct lead angle for the rope without any impediment. 

The breaking load for both the A2030R2 and A2030R3 is set by the single blocks, this is 750Kg, which is more than strong enough for most triangle backstay arrangements on sportsboats.