28 ST FS – 2-Speed Self-Tailing Manual Winch – Full Stainless Steel
If you take pride in having your yacht look its best, ANDERSEN’s Full Stainless Self-Tailing Winch creates the dock-stopping appeal you desire. It combines all the convenience and power of ANDERSEN’s self-tailing winch with a stunning all stainless steel look.
From top to bottom the drive shaft stripper arm, self-tailing jaws, drum and upper & lower trim rings are manufactured in highest quality and beautifully polished grade 316 stainless steel. The dramatic result is a highly reflective winch that becomes a highlight of the boat and a true reflection of your yachting pride. We like to say, “Full Stainless – Beyond Good Looks.”
As with all ANDERSEN Winches™, our Full Stainless Self-Tailing winch features the exclusive stainless steel Power Rib™ drum for maximum power and extended line life. This model also uses our exclusive self-tailing device that automatically accommodates a wide range of different line sizes.
Materials
Andersen winch drums are produced from grade 316L stainless steel, cold formed in stages during manufacture to further increase strength and hardness as it takes its final form. The resulting construction is lightweight, yet stiff and unyielding.
Drive shafts are in grade 329 duplex stainless steel. Pawls are cut from a cold pressed profile in grade 316 stainless steel and are virtually unbreakable.
The upper center stems are manufactured from aluminum bronze for ultimate durability. The combination of materials and design contribute to a lightweight, rigid final assembly that enhances. the mechanical efficiency of the winch. Andersen winces are of similar weight to winches with aluminum drums, but are far more durable.
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.
Features
Anderson winch drums incorporate the distinctive Power Rib which ensures a controlled grip on the line at all times, whether trimming or easing. The highly polished stainless steel surface minimizes vertical friction and allows the loaded rope turns to slide easily upward as the drum rotates, without the shuddering and excessive rope wear seen on winches that rely on a rough surface finish for grip.
Stainless steel roller bearings and ball bearings carry the highest drum loads to the center stem of the winch, minimizing efficiency losses due to friction.
The self tailing arm can be rotated through 360 degrees for optimum positioning (40ST and larger). Stainless steel self-tailing jaws adjust automatically to suit various rope sizes.
Andersen winches are designed for simple, straightforward installation and maintenance. Servicing is only required every two years or so, under normal use.
Specifications:
Drum Ø:70mm(2-3/4″)
Base Ø:125mm(4-15/16″)
Height:151mm(5-15/16″)
Line Entry:65mm(2-9/16″)
Line Size:8-14mm(1/8 – 11/16″)
Weight;3.9kg(8.6lbs)
Gear ratio 1st speed1.3 : 1
Gear ratio 2nd speed:4.0 : 1
Power ratio 1st speed:9.5 : 1
Power ratio 2nd speed:28.6 : 1
