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Ronstan All Purpose Blocks

Ronstan All Purpose Blocks (AP Blocks) are a general use block for use on cruising and racing boats. The range consists of Series 40 and Series 50 blocks, shackles and related hardware.

AP blocks have the following features:

  • Self-lubricating Acetal polymer sheaves ensure low friction and extreme durability.
  • High status and dynamic load capacity.
  • Long service life, virtually maintenance free.
  • Captive LockTM universal swivel head can be fixed at 0° or 90°, or left free to swivel.
  • Removable becket pins allow lines to be spliced prior to fitting and are locked into position without the use of split rings or tools.
  • Fiddle blocks are ideal for fine-tune mainsheet tackles, cunninghams, boom vangs, backstays and other control line purchase systems.
  • Snap shackle adapters suit single and fiddle blocks and are available in standard and trunnion versions.
  • A stand-up base adapter and snap shackle adapters add functionality to single and fiddle blocks.
  • Quick adjusting cleat arms require no tools to adjust and fix in desired position.
  • Low profile stand-up block has a swivel head post to allow full articulation and rotation.
  • Mainsheet and halyard applications, vang and spinnaker control lines on boats up to 10m (33ft) in length.
  • UV-stabilised Acetal sheaves.
  • Impact modified, fibre reinforced and UV-stabilised nylon cheeks.
  • Grade 316 stainless steel bearing race, load straps and head fittings.

Series 40

Ronstan's Series 40 AP Blocks have 40mm sheaves for rope up to 10mm in diameter (fiddle blocks suit rope up to 8mm in diameter only).

Mainsheet and halyard applications, vang and spinnaker control lines on off-the-beach boats and small keel boats up to 8m (26ft).

Series 50

Ronstan's Series 50 AP Blocks have 50mm sheaves for rope up to 12mm in diameter (fiddle blocks suit rope up to 10mm in diameter only).

Mainsheet and halyard applications, vang and spinnaker control lines on boats up to 10m (33ft).

Triple block, universal head
(RF51310)
Upright lead block
(RF50171HL)
Stand-up block, swivel head
(RF51140)
Fiddle block, universal head
(RF51500)
Fiddle block, becket, universal head
(RF51510)
Fiddle block, becket, adjustable cleat, universal head
(RF51530)
Stand-up base, 51mm x 75mm (2" x 3" base)
(RF2450)
Snap shackle head adapter
(RF6170)
Trunnion snap shackle head adapter
(RF6171)
Shackle with 4.8mm pin suits single and fiddle blocks
(RF150)
Shackle with 6mm pin suits double and triple blocks
(RF151)
Snap-in keyhole becket pin
(RF51010)
Becket pin with split ring
(RF51011)

 

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