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RONSTANSeries 40 Ratchet Orbit Blocks

RONSTAN

Series 40 Ratchet Orbit Blocks

Practical Sailor's Ratchet Block Click-Off rated Ronstan's Orbit block "Overall, the most impressive with its grip, versatility, and lightweight design."

The newest addition to Ronstan’s Orbit range of super lightweight, fiber-reinforced blocks. Ideal for sheet applications on dinghies up to 16' and control line applications for small keel boats. All Series 40 Orbit Blocks™ feature ultra-strong Dyneema® SK-75 links that are lighter in weight and stronger than metal headposts on conventional blocks. These blocks also feature a precision, twostage bearing for reduced friction under high loads. Series 40 Ratchet blocks feature 14:1 holding power and a sophisticated cross-hole sheave geometry for superior rope wear performance. There are two styles of Series 40 ratchet blocks. The automatic version is ideal for asymmetric spinnakers and other applications where an auto-engaging ratchet is preferred. The standard manual ratchet serves for mainsheet and other traditional ratchet applications.

Many of the top Grand Prix Laser sailors are switching to Orbit blocks. Click here to see how to rig your mainsheet system like the one developed by world champion laser sailor Tom Slingsby.

  • Sheave: Carbon fiber reinforced, PTFE impregnated engineered nylon
  • Ball Bearings: High compression strength Carbon Black Acetal, Stage 2 bearing: Glass-fiber reinforced, MoS2 impregnated engineered nylon
  • Sheave Size: 1 9/16" (40mm)
  • Line Dia.: 5/16" (8mm) max.
  • Cheek Material/Finish: Toughened glass-fiber reinforced nylon
  • Shackle/Strap Type: UV stabilized, multistrand Dyneema® link
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Series 40 Ratchet Block, Single Auto, 385lb. SWL, 1.3oz. 9553173 RF46101
Limited availability.

Orig. $58.99

Now  $45.88

Series 40 Ratchet Block, Single/Becket/Cleat, 385lb. SWL, 3.5oz. 9553223 RF46131
Limited availability.

Orig. $106.00

Now  $60.77

Series 40 Ratchet Block, Cheek/Clockwise, 385lb. SWL, 1.3oz. 9553231 RF46151
In stock online.

$52.99

Series 40 Ratchet Block, Cheek/Anti-Clockwise, 385lb. SWL, 1.3oz. 9553249 RF46151A
In stock online.

$52.99

Product Description

Practical Sailor's Ratchet Block Click-Off rated Ronstan's Orbit block "Overall, the most impressive with its grip, versatility, and lightweight design."

The newest addition to Ronstan’s Orbit range of super lightweight, fiber-reinforced blocks. Ideal for sheet applications on dinghies up to 16' and control line applications for small keel boats. All Series 40 Orbit Blocks™ feature ultra-strong Dyneema® SK-75 links that are lighter in weight and stronger than metal headposts on conventional blocks. These blocks also feature a precision, twostage bearing for reduced friction under high loads. Series 40 Ratchet blocks feature 14:1 holding power and a sophisticated cross-hole sheave geometry for superior rope wear performance. There are two styles of Series 40 ratchet blocks. The automatic version is ideal for asymmetric spinnakers and other applications where an auto-engaging ratchet is preferred. The standard manual ratchet serves for mainsheet and other traditional ratchet applications.

Many of the top Grand Prix Laser sailors are switching to Orbit blocks. Click here to see how to rig your mainsheet system like the one developed by world champion laser sailor Tom Slingsby.

  • Sheave: Carbon fiber reinforced, PTFE impregnated engineered nylon
  • Ball Bearings: High compression strength Carbon Black Acetal, Stage 2 bearing: Glass-fiber reinforced, MoS2 impregnated engineered nylon
  • Sheave Size: 1 9/16" (40mm)
  • Line Dia.: 5/16" (8mm) max.
  • Cheek Material/Finish: Toughened glass-fiber reinforced nylon
  • Shackle/Strap Type: UV stabilized, multistrand Dyneema® link

Specs

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