SKU:73332
18 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. Whats 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:
The ANDERSEN 18 ST FS Self-Tailing Manual Single Speed Winch is engineered for durability and ease of use in demanding sailing conditions. Featuring a full stainless steel body, this winch offers exceptional corrosion resistance and long-lasting performance. Its design incorporates the innovative Power Rib technology, which consists of vertical ribs running along the drum surface. This unique feature provides a superior grip on ropes, reducing wear and tear while ensuring consistent performance over time. The polished stainless steel finish not only enhances durability but also contributes to a sleek, professional appearance suitable for any vessel.
Power Rib technology minimizes rope slippage and makes tacking more manageable by requiring fewer turns on the winch. It allows for smoother easing of sheets without harsh snatching, significantly reducing the risk of overrides and jammed sheets. This design ensures that the grip remains consistent even after prolonged use, unlike abrasive surfaces that tend to wear down both the ropes and the drum. The winch's construction and ribbed surface make it a reliable choice for sailors seeking durability and efficiency.
The winch's Power Ratio, calculated as the handle length multiplied by the gear ratio divided by the drum radius, offers a mechanical advantage for handling heavy loads. With a gear ratio of 2.6:1 and a power ratio of 18.8:1 at first speed, the winch can generate substantial pulling power. For example, applying a 10kg load on a 10-inch handle can produce up to 188kg of pulling force, considering efficiency losses. This high mechanical advantage facilitates easier handling of heavy sheets and halyards, making sailing operations smoother and less strenuous.
Designed with a compact footprint, the drum measures approximately 2-3/4 inches in diameter, with a line entry of nearly 2 inches, accommodating line sizes from 1/8 inch to 11/16 inch. The winch weighs approximately 7 pounds, making it suitable for various vessel sizes. Its robust stainless steel construction and thoughtful engineering make the ANDERSEN 18 ST FS winch an excellent investment for sailors seeking reliable, corrosion-resistant equipment that simplifies sail handling and enhances overall sailing performance.
Features:
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