Harken Pro-Trim

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Harken Pro-Trim Series Line-Driven Belowdecks Geared System Provides Fingertip Control

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Harken Pro-Trim Series
Pewaukee, Wisconsin—The Harken Pro-Trim (HPT) traveler system is the first of many applications of the DAME recognized Pro-Trim series. The HPT system was conceived and prototyped by Lou Varney of Diverse Yachts/Tropical Engineering, with development led by Harken custom engineer, Ethan Brown. This belowdecks system is a completely new concept that provides the trimmer with increased mechanical advantage and fingertip responsiveness. The system’s small footprint takes up far less space than other multiple-purchase belowdecks systems. The HPT also eliminates the need for hydraulics or heavy winches, alleviating the concern of weight up high.

“In my career as a professional sailor, so many boats had traveler systems without enough purchase for adjustment under load,” explains Lou Varney. “The idea behind the Harken Pro-Trim was to build a compact belowdeck system with enough power so the trimmer could enjoy fingertip control and limitless mechanical advantage simply by pulling on a line. The great thing about the Pro-Trim is that it’s not just for travelers, but for any system that needs lots of power.”

There has been a groundswell of interest in the HPT from sailors around the world. “The interest in the Pro-Trim since testing began has been phenomenal,” said Mark Wiss, Harken’s AC and high-profile racing technical service and sales manager. “We’ve tested the HPT on a handful of boats and the feedback from testing has been terrific.”

The HPT has been tested on numerous boats including Torbjörn Torqnvist’s Transpac 52, Artemis, “It has opened up the boat downstairs enormously, enabling us to drag sails around without them getting caught up in all the block and tackle of a traditional system” observed Chris Hosking, boat captain of Artemis. “I could also imagine it being a huge hit in the cruising market where you don't have the space required for a normal block and tackle system."

The HPT is now being applied to athwartship jib controls and other application possibilities include backstays as well as fore and aft genoa car controls. The system was designed with custom installation in mind, making application possibilities limitless. Components of the HPT include universal joints on both ends of the drive shaft, allowing the system to be configured in multiple ways depending upon the application.

Major components of the Harken Pro-Trim, including the drive sheave, base box and one larger gear, are CNC-machined 6061-T6 aluminum, constructed for strength and durability. Spool shaft, small gears and spool shaft bearings are precision-cut stainless steel. Plastic roller bearings from Harken’s racing winches support the drive shafts, while high-strength Torlon® ball bearings handle thrust loads.

Harken, Inc. is a leading manufacturer and distributor of innovative sailboat hardware and accessories. Headquartered in Pewaukee, Wisconsin, Harken manufactures in the USA and Italy. Their network includes offices in 48 countries, with group offices located in Australia, France, Italy, New Zealand, Slovenia, Sweden, the United Kingdom and the United States (Rhode Island, California, and Florida).

Harken Pro-Trim C8023
C8023
Drive Sheave
Sheave/Spool: 5.906 (150 mm)
Dimensions: 4L x 8W x 7.75H
(203 x 102 x 197 mm)
Weight: 54.4 oz (1542 g)
SWL: 500 lb (227 kg)
Breaking strength: 1500 lb (680 kg)

Harken Pro-Trim C8440
C8440
Dual Spool Assembly
Sheave/Spool: 1.00 (25.4 mm)
Dimensions: 9.203L x 5.5W x 4.799H
(234 x 140 x 122 mm)
Weight: 70.864 oz (2009 g)
SWL: 1500 lb (680 kg)
Breaking strength: 3000 lb (1361 kg)