10″ wind vane for small keelboats,
sportboats and dinghies
#3120

WindTrak 10 features:

• J-Base™ mount for installation on top, side, or front of most masts
• Sapphire jewel bearing for super low friction and extra sensitivity
• Vane length 10″ (25 cm), weighs just 1.2 ounces (31 grams)
• Vane and tabs feature reflectors for excellent visibility day and night
• Responds in wind as low as 0.2 knot
• Wind tunnel tested to 80 knots

The glass-filled polycarbonate J-Base mounts vertically or horizontally on the side, front, or top of most masts. Comes with two #10 (5 mm) self-tapping screws.

To adjust the tacking arm angle to match upwind performance, refer to the template on the next page.

TAB ANGLE ADJUSTMENT

55° for boats with good windward performance
60° for normal ocean racers
65° for normal day cruisers

ATTACHING VANE & TACKING ARM TO SUPPORT SHAFT

**A.**Slide crook of tab assembly wire over vane threads.
**B.**Apply silicone sealant or Locktite® to vane threads.
**C.**Completely tighten with a wrench until snug.

INSTALLATION ALOFT

Align WindTrak 10 with the centerline of the boat, apply silicone sealant or Locktite® to the set screw and tighten. Tab angle should be preset at approximately 55, 60, or 65°, depending on upwind performance.

THE J-BASE

The J-Base comes with two #10 (5 mm) self-tapping screws. Drill a pilot hole in the mast, apply silicone sealant or Locktite® and screw into the mast. Installation of J-Base can be accomplished by tapping the mast for 3/16″ (5 mm) machine screws or by using epoxy putty to affix the base to the mast.

WindTrak 10 Accessories

1705 Universal Masthead Mount, for installations requiring more room at the

masthead. This mount extends WindTrak away from the masthead up to 13” (33 cm).

3200 WindTrak Light, for nighttime sailing. Draws under 25 ma current. For

use with or without #1705.

The Complete WindTrak Line…

WindTrak models are available for every sailor’s needs.

3120| WindTrak 10

10″ (25  cm)vane,

For small boats and dinghies

---|---
3150| WindTrak 15

15″ (38  cm) vane,

The choice for most sailors

3160| WindTrak AV

15″ (38  cm) vane, for mounting

On whip antennas, combining two

Installations in one

Tips for using your WindTrak:

• Always assemble your WindTrak with Locktite® or use a silicone seal on the threads to eliminate the possibility of the unit unscrewing in use from vibration.
• Prior to unstepping your mast, take your WindTrak down first. Periodically check the assembly screws holding your WindTrak together.
• Lubrication is never needed, but years of salt or dirt build-up should be rinsed off with fresh water occasionally.

Replacement Parts for WindTrak 10

Spare parts can be ordered from your local dealer or from Davis; an identity which model you have before calling.
3101 Spare Vane for WindTrak 10
3125 Extra J-Base for WindTrak 10

Davis Instruments
3465 Diablo Avenue, Hayward, CA 94545 U.S.A.
www.davisinstruments.com
03120.046, Rev. A November 2020

References

• Davis Instruments

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