RA2012010000 - Andersen 12 ST FS Self-Tailing Manual Single Speed Winch - Full Stainless

12 ST FS Self-Tailing Manual Single Speed Winch - Full Stainless

Power Rib™

ANDERSEN Winches feature the Power Rib™. Unlike other winches with abrasive drum surfaces, ANDERSEN winch drums have vertical ribs running up the surface. This combined with the smooth polished stainless steel gives a maximum grip and minimum wear on ropes, reducing the replacements costs of sheets and halyards. What’s more, the Power Rib principle simply makes sailing more pleasurable. Fewer turns on the winch make tacking easier. Sheets can be gently eased out without harsh snatching and the risks of overrides and jammed sheets are significantly reduced. The grip provided by the ribs will remain the same year after year, unlike many other winches with an abrasive or sandpaper-like surface. Such surfaces have a tendency to wear down both ropes and themselves.

Power Ratio

Power Ratio is the mechanical advantage of the winch and is calculated as follows:

length of handle x gear ratio 
          radius of drum

The pull of the winch is based on the Power Ratio and not just on the physical size of the winch or the diameter of the drum. The Power Ratio is used to determine the load the winch may handle as follows: pull of handle (kg x Power Ratio = pull of winch (kg).

This means that by applying a load of 10kg, using a 10" standard handle, on a Power Ratio 40:1 winch, the winch can pull 400kg, assuming that the winch is 100% efficient. This is not possible in practice as the efficiency is reduced by internal mechanical friction losses.

Specifications:

• Drum Ø D: 2-3/4"
• Base Ø B: 4-1/2"
• Height H: 5"
• Line Entry L: 1-3/4"
• Line Size: 5/16-9/16"
• Weight: 5.7lb
• Gear ratio 1st speed: 1.3 : 1
• Power ratio 1st speed: 9.5 :1

The ANDERSEN 12 ST FS Self-Tailing Manual Single Speed Winch, part number RA2012010000, is a full stainless steel winch designed for marine applications. It features a self-tailing mechanism and a single-speed operation, suitable for managing lines on various vessels. The winch incorporates the Power Rib� drum design, which utilizes vertical ribs and a polished stainless steel surface to enhance grip on ropes while minimizing wear. This design aims to extend the lifespan of sheets and halyards by reducing abrasion, potentially lowering replacement costs over time. The Power Rib principle also contributes to smoother line handling, reducing the likelihood of overrides and jammed sheets during operations such as tacking or easing lines. With a Power Ratio of 9.5:1 in its first speed, this winch provides mechanical advantage for pulling loads. It is intended for users seeking a durable and efficient solution for line management on boats, offering consistent performance without the degradation associated with abrasive drum surfaces.